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We explored the photoreforming of rice and corn starch with simultaneous hydrogen production over a Cd0.7Zn0.3S-based photocatalyst under visible light irradiation. The photocatalyst was characterized by UV–vis diffuse reflectance spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The influence of starch pretreatment conditions, such as hydrolysis temperature and alkaline concentration, on the reaction rate was studied. The maximum rate of H2 evolution was 730 μmol·h−1·g−1, with AQE = 1.8% at 450 nm, in the solution obtained after starch hydrolysis in 5 M NaOH at 70 °C. The composition of the aqueous phase of the suspension before and after the photocatalytic reaction was studied via high-performance liquid chromatography, and such products as glucose and sodium gluconate, acetate, formate, glycolate, and lactate were found after the photocatalytic reaction.
Anna Kurenkova; Tatiana Medvedeva; Nikolay Gromov; Andrey Bukhtiyarov; Evgeny Gerasimov; Svetlana Cherepanova; Ekaterina Kozlova. Sustainable Hydrogen Production from Starch Aqueous Suspensions over a Cd0.7Zn0.3S-Based Photocatalyst. Catalysts 2021, 11, 870 .
AMA StyleAnna Kurenkova, Tatiana Medvedeva, Nikolay Gromov, Andrey Bukhtiyarov, Evgeny Gerasimov, Svetlana Cherepanova, Ekaterina Kozlova. Sustainable Hydrogen Production from Starch Aqueous Suspensions over a Cd0.7Zn0.3S-Based Photocatalyst. Catalysts. 2021; 11 (7):870.
Chicago/Turabian StyleAnna Kurenkova; Tatiana Medvedeva; Nikolay Gromov; Andrey Bukhtiyarov; Evgeny Gerasimov; Svetlana Cherepanova; Ekaterina Kozlova. 2021. "Sustainable Hydrogen Production from Starch Aqueous Suspensions over a Cd0.7Zn0.3S-Based Photocatalyst." Catalysts 11, no. 7: 870.
The optimal conditions for the synthesis of platinized graphitic carbon nitride (Pt/g-C3N4) have been found. It was investigated as a catalyst for the production of hydrogen from aqueous solutions of triethanolamine (TEOA) under irradiation with visible light. The highest photocatalytic activity of 450 μmol h−1 g−1 and an apparent quantum efficiency of 1.1% were demonstrated by the 1% Pt/g-C3N4 sample prepared from melamine by calcining at 600 °C for 2 h.
Angelina V. Zhurenok; Tatyana V. Larina; Dina V. Markovskaya; Svetlana V. Cherepanova; Elena A. Mel’Gunova; Ekaterina A. Kozlova. Synthesis of graphitic carbon nitride-based photocatalysts for hydrogen evolution under visible light. Mendeleev Communications 2021, 31, 157 -159.
AMA StyleAngelina V. Zhurenok, Tatyana V. Larina, Dina V. Markovskaya, Svetlana V. Cherepanova, Elena A. Mel’Gunova, Ekaterina A. Kozlova. Synthesis of graphitic carbon nitride-based photocatalysts for hydrogen evolution under visible light. Mendeleev Communications. 2021; 31 (2):157-159.
Chicago/Turabian StyleAngelina V. Zhurenok; Tatyana V. Larina; Dina V. Markovskaya; Svetlana V. Cherepanova; Elena A. Mel’Gunova; Ekaterina A. Kozlova. 2021. "Synthesis of graphitic carbon nitride-based photocatalysts for hydrogen evolution under visible light." Mendeleev Communications 31, no. 2: 157-159.
The series of Cd1-xZnxS (x = 0–1.0) photocatalysts and Cd1-xZnxS/FTO thin film photoelectrodes were prepared. The obtained samples were studied by X-ray diffraction method (XRD), diffuse reflectance spectroscopy (DRS), scanning electron microscopy (SEM), and N2 low temperature adsorption. The photocatalysts were tested in the reaction of hydrogen production from Na2S/Na2SO3 solution under visible light irradiation. The photocurrents were measured in aqueous solution of Na2Sn and NaCl. It was shown that the target properties in the hydrogen evolution and photocurrent production are changed differently dependent on the composition of the mixed solid solutions. The highest photocatalytic hydrogen production rate was observed over Cd0.3Zn0.7S while the most effective photoelectrode was Cd0.8Zn0.2S/FTO. The Cd1-xZnxS/FTO samples were studied by the electrochemical methods in details. The factors affecting the photocatalytic activity and the photocurrent generation were found and listed for the first time. Conduction band potential (or flat band potential) and electron lifetime play a crucial role for effective photocatalytic hydrogen production over Cd1-xZnxS. Optimal photoelectrochemical characteristics were obtained in case of high values of electron lifetime. If the electron lifetimes of the tested samples have similar values, the high concentration of charge carriers is required for high photocurrent generation over Cd1-xZnxS/FTO photoelectrodes.
Dina V. Markovskaya; Angelina V. Zhurenok; Svetlana V. Cherepanova; Ekaterina A. Kozlova. Solid solutions of CdS and ZnS: Comparing photocatalytic activity and photocurrent generation. Applied Surface Science Advances 2021, 4, 100076 .
AMA StyleDina V. Markovskaya, Angelina V. Zhurenok, Svetlana V. Cherepanova, Ekaterina A. Kozlova. Solid solutions of CdS and ZnS: Comparing photocatalytic activity and photocurrent generation. Applied Surface Science Advances. 2021; 4 ():100076.
Chicago/Turabian StyleDina V. Markovskaya; Angelina V. Zhurenok; Svetlana V. Cherepanova; Ekaterina A. Kozlova. 2021. "Solid solutions of CdS and ZnS: Comparing photocatalytic activity and photocurrent generation." Applied Surface Science Advances 4, no. : 100076.
A series of solid solutions of cadmium and manganese sulfides, Cd1-xMnxS (x = 0–0.35), and composite photocatalysts, CdS-β-Mn3O4-MnOOH, were synthesized by precipitation with sodium sulfide from soluble cadmium and manganese salts with further hydrothermal treatment at 120 °C. The obtained photocatalysts were studied by the X-ray diffraction method (XRD), UV-vis diffuse reflectance spectroscopy, transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and N2 low temperature adsorption. The photocatalysts were tested in hydrogen production using a Na2S/Na2SO3 aqueous solution under visible light (λ = 450 nm). It was shown for the first time that both kinds of photocatalysts possess high activity in hydrogen evolution under visible light. The solid solution Cd0.65Mn0.35S has an enhanced photocatalytic activity due to its valence and conduction band position tuning, whereas the CdS-β-Mn3O4-MnOOH (40–60 at% Mn) samples were active due to ternary heterojunction formation. Further, the composite CdS-β-Mn3O4-MnOOH photocatalyst had much higher stability in comparison to the Cd0.65Mn0.35S solid solution. The highest activity was 600 mmol g−1 h−1, and apparent quantum efficiency of 2.9% (λ = 450 nm) was possessed by the sample of CdS-β-Mn3O4-MnOOH (40 at% Mn).
Ksenia O. Potapenko; Anna Yu. Kurenkova; Andrey V. Bukhtiyarov; Evgeny Yu. Gerasimov; Svetlana V. Cherepanova; Ekaterina A. Kozlova. Comparative Study of the Photocatalytic Hydrogen Evolution over Cd1−xMnxS and CdS-β-Mn3O4-MnOOH Photocatalysts under Visible Light. Nanomaterials 2021, 11, 355 .
AMA StyleKsenia O. Potapenko, Anna Yu. Kurenkova, Andrey V. Bukhtiyarov, Evgeny Yu. Gerasimov, Svetlana V. Cherepanova, Ekaterina A. Kozlova. Comparative Study of the Photocatalytic Hydrogen Evolution over Cd1−xMnxS and CdS-β-Mn3O4-MnOOH Photocatalysts under Visible Light. Nanomaterials. 2021; 11 (2):355.
Chicago/Turabian StyleKsenia O. Potapenko; Anna Yu. Kurenkova; Andrey V. Bukhtiyarov; Evgeny Yu. Gerasimov; Svetlana V. Cherepanova; Ekaterina A. Kozlova. 2021. "Comparative Study of the Photocatalytic Hydrogen Evolution over Cd1−xMnxS and CdS-β-Mn3O4-MnOOH Photocatalysts under Visible Light." Nanomaterials 11, no. 2: 355.
Pt/TiO2 and CuO0.68/TiO2 were synthesized and tested in the photoreforming of glycerol. The photocatalysts were characterized by UV–vis spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and transmission electron microscopy. It was found that the Pt/TiO2 photocatalyst was more active and stable, but the use of the CuOx/TiO2 photocatalyst made it possible to obtain a wider variety of products and a higher percentage of formation of organic products from glycerol. The highest rate of hydrogen evolution was equal to 0.55 mmol h−1 g−1 and to 1.35 mmol h−1 g−1 for CuOx/TiO2 and Pt/TiO2, respectively.
Ekaterina A. Kozlova; Anna Yu. Kurenkova; Evgeny Yu. Gerasimov; Nikolay V. Gromov; Tatiana B. Medvedeva; Andrey A. Saraev; Vasily V. Kaichev. Comparative study of photoreforming of glycerol on Pt/TiO2 and CuOx/TiO2 photocatalysts under UV light. Materials Letters 2020, 283, 128901 .
AMA StyleEkaterina A. Kozlova, Anna Yu. Kurenkova, Evgeny Yu. Gerasimov, Nikolay V. Gromov, Tatiana B. Medvedeva, Andrey A. Saraev, Vasily V. Kaichev. Comparative study of photoreforming of glycerol on Pt/TiO2 and CuOx/TiO2 photocatalysts under UV light. Materials Letters. 2020; 283 ():128901.
Chicago/Turabian StyleEkaterina A. Kozlova; Anna Yu. Kurenkova; Evgeny Yu. Gerasimov; Nikolay V. Gromov; Tatiana B. Medvedeva; Andrey A. Saraev; Vasily V. Kaichev. 2020. "Comparative study of photoreforming of glycerol on Pt/TiO2 and CuOx/TiO2 photocatalysts under UV light." Materials Letters 283, no. : 128901.
Simultaneous presence of ethanol and methylene blue was shown to provide the most efficient hydrogen production and methylene blue removal.
Dina V. Markovskaya; Angelina Zhurenok; Anna Yu. Kurenkova; Anna M. Kremneva; Andrey A. Saraev; Sergey M. Zharkov; Ekaterina A. Kozlova; Vasily V. Kaichev. New titania-based photocatalysts for hydrogen production from aqueous-alcoholic solutions of methylene blue. RSC Advances 2020, 10, 34137 -34148.
AMA StyleDina V. Markovskaya, Angelina Zhurenok, Anna Yu. Kurenkova, Anna M. Kremneva, Andrey A. Saraev, Sergey M. Zharkov, Ekaterina A. Kozlova, Vasily V. Kaichev. New titania-based photocatalysts for hydrogen production from aqueous-alcoholic solutions of methylene blue. RSC Advances. 2020; 10 (56):34137-34148.
Chicago/Turabian StyleDina V. Markovskaya; Angelina Zhurenok; Anna Yu. Kurenkova; Anna M. Kremneva; Andrey A. Saraev; Sergey M. Zharkov; Ekaterina A. Kozlova; Vasily V. Kaichev. 2020. "New titania-based photocatalysts for hydrogen production from aqueous-alcoholic solutions of methylene blue." RSC Advances 10, no. 56: 34137-34148.
A new multiphase photocatalyst – 1%Pt/Cd0.6Zn0.4S/Cd0.1Zn0.9S – was synthesized by a simple hydrothermal treatment of as-prepared Cd0.3Zn0.7S solid solution and thoroughly characterized by different methods. The activity was tested in a sustainable process of hydrogen evolution from aqueous solutions of two saccharides (glucose and xylose) under visible light. The mechanism of the photocatalytic hydrogen evolution from complex organic substrates is still controversial. In this research it was shown that optimizing the experimental conditions (pH, substrate concentration) leads to a significant increase in the photocatalytic activity for both saccharides. A kinetic equation based on a Langmuir model and including the degree of dissociation of the substrate was proposed and verified for the first time. The highest activities during hydrogen evolution for glucose and xylose were achieved in strongly alkaline media. The photocatalyst 1%Pt/CdZnS120 possessed an activity equal to 3.4 mmol H2 h−1 g−1 (glucose, apparent quantum efficiency 8.4%), that exceeds recently reported values.
Anna Yu. Kurenkova; Dina V. Markovskaya; Evgeny Yu. Gerasimov; Igor P. Prosvirin; Svetlana V. Cherepanova; Ekaterina A. Kozlova. New insights into the mechanism of photocatalytic hydrogen evolution from aqueous solutions of saccharides over CdS-based photocatalysts under visible light. International Journal of Hydrogen Energy 2020, 45, 30165 -30177.
AMA StyleAnna Yu. Kurenkova, Dina V. Markovskaya, Evgeny Yu. Gerasimov, Igor P. Prosvirin, Svetlana V. Cherepanova, Ekaterina A. Kozlova. New insights into the mechanism of photocatalytic hydrogen evolution from aqueous solutions of saccharides over CdS-based photocatalysts under visible light. International Journal of Hydrogen Energy. 2020; 45 (55):30165-30177.
Chicago/Turabian StyleAnna Yu. Kurenkova; Dina V. Markovskaya; Evgeny Yu. Gerasimov; Igor P. Prosvirin; Svetlana V. Cherepanova; Ekaterina A. Kozlova. 2020. "New insights into the mechanism of photocatalytic hydrogen evolution from aqueous solutions of saccharides over CdS-based photocatalysts under visible light." International Journal of Hydrogen Energy 45, no. 55: 30165-30177.
Photocatalysts based on titania and solid solutions of cadmium and zinc sulfides with deposited metals (Pt, Ag) were compared in CO2 reduction under visible light. In the presence of titania- and cadmium sulfide-based photocatalysts, the dominant reduction products were CH4 and CO, respectively, due to different positions of the conduction band level for these semiconductors. The deposition of metals on the surface of both TiO2- and CdS-based samples increased the molar concentration of methane in the reaction products.
Mikhail N. Lyulyukin; Anna Y. Kurenkova; Andrey V. Bukhtiyarov; Ekaterina A. Kozlova. Carbon dioxide reduction under visible light: a comparison of cadmium sulfide and titania photocatalysts. Mendeleev Communications 2020, 30, 192 -194.
AMA StyleMikhail N. Lyulyukin, Anna Y. Kurenkova, Andrey V. Bukhtiyarov, Ekaterina A. Kozlova. Carbon dioxide reduction under visible light: a comparison of cadmium sulfide and titania photocatalysts. Mendeleev Communications. 2020; 30 (2):192-194.
Chicago/Turabian StyleMikhail N. Lyulyukin; Anna Y. Kurenkova; Andrey V. Bukhtiyarov; Ekaterina A. Kozlova. 2020. "Carbon dioxide reduction under visible light: a comparison of cadmium sulfide and titania photocatalysts." Mendeleev Communications 30, no. 2: 192-194.
Two types of nickel-modified Cd1−xZnxS-based photocatalysts, CdxZn1−xNiySy+1 (mol% Ni = 0.05–0.5; x = 0.8) and yNiS/CdxZn1−xS (mol% Ni = 0.1–1.0; x = 0.8), were prepared via a simple two-stage technique. The samples were characterized by XRD, UV–vis spectroscopy, and XPS techniques. The activity of the synthesized photocatalysts were tested in the gas-phase photocatalytic reduction of CO2 under visible light (λ = 450 nm). It has been shown that both CdxZn1−xNiySy+1 and yNiS/CdxZn1−xS samples with ultra-low content of nickel sulfide have improved activity in the carbon dioxide reduction in comparison to bare CdxZn1−xS solid solutions. Also, it has been demonstrated that the addition of the reducing agent—hydrogen—into the system does not lead to a positive effect: the rate of CO2 reduction either remains unchanged or decreases.
Ekaterina A. Kozlova; Mikhail Lyulyukin; Dina V. Markovskaya; A. V. Bukhtiyarov; I. P. Prosvirin; Svetlana V. Cherepanova; Denis V. Kozlov. Photocatalytic CO2 Reduction Over Ni-Modified Cd1−xZnxS-Based Photocatalysts: Effect of Phase Composition of Photocatalyst and Reaction Media on Reduction Rate and Product Distribution. Topics in Catalysis 2020, 63, 121 -129.
AMA StyleEkaterina A. Kozlova, Mikhail Lyulyukin, Dina V. Markovskaya, A. V. Bukhtiyarov, I. P. Prosvirin, Svetlana V. Cherepanova, Denis V. Kozlov. Photocatalytic CO2 Reduction Over Ni-Modified Cd1−xZnxS-Based Photocatalysts: Effect of Phase Composition of Photocatalyst and Reaction Media on Reduction Rate and Product Distribution. Topics in Catalysis. 2020; 63 (1-2):121-129.
Chicago/Turabian StyleEkaterina A. Kozlova; Mikhail Lyulyukin; Dina V. Markovskaya; A. V. Bukhtiyarov; I. P. Prosvirin; Svetlana V. Cherepanova; Denis V. Kozlov. 2020. "Photocatalytic CO2 Reduction Over Ni-Modified Cd1−xZnxS-Based Photocatalysts: Effect of Phase Composition of Photocatalyst and Reaction Media on Reduction Rate and Product Distribution." Topics in Catalysis 63, no. 1-2: 121-129.
The nature of the sacrificial agent affects the transformations of a Zn(OH)2 co-catalyst during photocatalytic hydrogen production.
Dina V. Markovskaya; Svetlana V. Cherepanova; Evgeny Yu. Gerasimov; Angelina V. Zhurenok; Aleksandra V. Selivanova; Dmitry S. Selishchev; Ekaterina A. Kozlova. The influence of the sacrificial agent nature on transformations of the Zn(OH)2/Cd0.3Zn0.7S photocatalyst during hydrogen production under visible light. RSC Advances 2020, 10, 1341 -1350.
AMA StyleDina V. Markovskaya, Svetlana V. Cherepanova, Evgeny Yu. Gerasimov, Angelina V. Zhurenok, Aleksandra V. Selivanova, Dmitry S. Selishchev, Ekaterina A. Kozlova. The influence of the sacrificial agent nature on transformations of the Zn(OH)2/Cd0.3Zn0.7S photocatalyst during hydrogen production under visible light. RSC Advances. 2020; 10 (3):1341-1350.
Chicago/Turabian StyleDina V. Markovskaya; Svetlana V. Cherepanova; Evgeny Yu. Gerasimov; Angelina V. Zhurenok; Aleksandra V. Selivanova; Dmitry S. Selishchev; Ekaterina A. Kozlova. 2020. "The influence of the sacrificial agent nature on transformations of the Zn(OH)2/Cd0.3Zn0.7S photocatalyst during hydrogen production under visible light." RSC Advances 10, no. 3: 1341-1350.
The photoanodes made of Cd0.3Zn0.7S and FTO were prepared and modified by Ni(OH)2, Zn(OH)2, and NiS as co-catalysts. The amounts of the co-catalysts were the same as those in the most active photocatalysts tested earlier in photocatalytic hydrogen production. The obtained electrodes were studied by X-ray diffraction and photoelectron spectroscopy, scanning and transmission electron microscopy, cyclic voltammetry, and electrochemical impedance spectroscopy. The modification of the photoelectrode surface led to the growth of short-circuit current density, power conversion efficiency and photogenerated charge carriers lifetime, while open-circuit voltage, fill factor, and resistivity fell. The changes in the photocatalytic activity and the photoelectrochemical properties of the tested samples were found to correlate with each other, which indicated the same origin of the studied phenomenon.
Dina V. Markovskaya; Evgenii N. Gribov; Ekaterina A. Kozlova; Denis V. Kozlov; Valentin N. Parmon. Modification of sulfide-based photocatalyst with zinc- and nickel-containing compounds: Correlation between photocatalytic activity and photoelectrochemical parameters. Renewable Energy 2019, 151, 286 -294.
AMA StyleDina V. Markovskaya, Evgenii N. Gribov, Ekaterina A. Kozlova, Denis V. Kozlov, Valentin N. Parmon. Modification of sulfide-based photocatalyst with zinc- and nickel-containing compounds: Correlation between photocatalytic activity and photoelectrochemical parameters. Renewable Energy. 2019; 151 ():286-294.
Chicago/Turabian StyleDina V. Markovskaya; Evgenii N. Gribov; Ekaterina A. Kozlova; Denis V. Kozlov; Valentin N. Parmon. 2019. "Modification of sulfide-based photocatalyst with zinc- and nickel-containing compounds: Correlation between photocatalytic activity and photoelectrochemical parameters." Renewable Energy 151, no. : 286-294.
The nonstoichiometric titanium dioxide nanotubular films were synthesized by the anodization of titanium foil in a solution of ethylene glycol and ammonium fluoride. The calcination of films at the temperatures of 200–600 °C led to the changes in their morphology, structure, phase composition, and properties. During the calcination, amorphous phase of titanium oxide in the prepared films was converted into anatase (space group P42/mnm) at ca. 300 °C followed by the transformation of anatase to rutile (space group I41/amd) at the temperatures above 500 °C. The optical band gap was decreased as the calcination temperature was increased due to the changes in stoichiometry and phase composition of nanotubular films. A complete mineralization of acetone vapor in a continuous-flow reactor using the nanotubular films was carried out for the first time. The photocatalytic activity of the film calcined at 500 °C in the reaction of acetone oxidation to carbon dioxide under visible light (λmax = 450 nm) was found to be 4 times higher than the activity of commercially available TiO2 P25. A high defectiveness and an extended surface were the reasons for an enhanced photocatalytic activity of the synthesized nanotubular films under visible light.
Albina A. Valeeva; Irina B. Dorosheva; Ekaterina A. Kozlova; Robert V. Kamalov; Alexander S. Vokhmintsev; Dmitry S. Selishchev; Andrey A. Saraev; Evgeny Yu. Gerasimov; Ilya A. Weinstein; Andrey A. Rempel. Influence of calcination on photocatalytic properties of nonstoichiometric titanium dioxide nanotubes. Journal of Alloys and Compounds 2019, 796, 293 -299.
AMA StyleAlbina A. Valeeva, Irina B. Dorosheva, Ekaterina A. Kozlova, Robert V. Kamalov, Alexander S. Vokhmintsev, Dmitry S. Selishchev, Andrey A. Saraev, Evgeny Yu. Gerasimov, Ilya A. Weinstein, Andrey A. Rempel. Influence of calcination on photocatalytic properties of nonstoichiometric titanium dioxide nanotubes. Journal of Alloys and Compounds. 2019; 796 ():293-299.
Chicago/Turabian StyleAlbina A. Valeeva; Irina B. Dorosheva; Ekaterina A. Kozlova; Robert V. Kamalov; Alexander S. Vokhmintsev; Dmitry S. Selishchev; Andrey A. Saraev; Evgeny Yu. Gerasimov; Ilya A. Weinstein; Andrey A. Rempel. 2019. "Influence of calcination on photocatalytic properties of nonstoichiometric titanium dioxide nanotubes." Journal of Alloys and Compounds 796, no. : 293-299.
A new heteroleptic rhodium(iii) cis-diaquacomplex was prepared by a protic acid induced oxalate detachment reaction and its catalytic activity for light-driven hydrogen generation was studied.
Danila Vasilchenko; Sergey Tkachev; Iraida Baidina; Ilya V. Korolkov; Semen Nikolaevich Berdyugin; Ekaterina Kozlova; Denis Kozlov. Preparation of a rhodium(iii) cis-diaquacomplex by protic acid induced oxalate-release from mer-[Rh(C2O4)Cl(py)3]. New Journal of Chemistry 2018, 42, 19637 -19643.
AMA StyleDanila Vasilchenko, Sergey Tkachev, Iraida Baidina, Ilya V. Korolkov, Semen Nikolaevich Berdyugin, Ekaterina Kozlova, Denis Kozlov. Preparation of a rhodium(iii) cis-diaquacomplex by protic acid induced oxalate-release from mer-[Rh(C2O4)Cl(py)3]. New Journal of Chemistry. 2018; 42 (24):19637-19643.
Chicago/Turabian StyleDanila Vasilchenko; Sergey Tkachev; Iraida Baidina; Ilya V. Korolkov; Semen Nikolaevich Berdyugin; Ekaterina Kozlova; Denis Kozlov. 2018. "Preparation of a rhodium(iii) cis-diaquacomplex by protic acid induced oxalate-release from mer-[Rh(C2O4)Cl(py)3]." New Journal of Chemistry 42, no. 24: 19637-19643.
Gas-phase CO2 reduction with H2O on Cd1−xZnxS-based photocatalysts has been performed for the first time.
Ekaterina A. Kozlova; Mikhail N. Lyulyukin; Dina V. Markovskaya; Dmitry S. Selishchev; Svetlana V. Cherepanova; Denis V. Kozlov. Synthesis of Cd1−xZnxS photocatalysts for gas-phase CO2 reduction under visible light. Photochemical & Photobiological Sciences 2018, 18, 871 -877.
AMA StyleEkaterina A. Kozlova, Mikhail N. Lyulyukin, Dina V. Markovskaya, Dmitry S. Selishchev, Svetlana V. Cherepanova, Denis V. Kozlov. Synthesis of Cd1−xZnxS photocatalysts for gas-phase CO2 reduction under visible light. Photochemical & Photobiological Sciences. 2018; 18 (4):871-877.
Chicago/Turabian StyleEkaterina A. Kozlova; Mikhail N. Lyulyukin; Dina V. Markovskaya; Dmitry S. Selishchev; Svetlana V. Cherepanova; Denis V. Kozlov. 2018. "Synthesis of Cd1−xZnxS photocatalysts for gas-phase CO2 reduction under visible light." Photochemical & Photobiological Sciences 18, no. 4: 871-877.
The Cd0.3Zn0.7S photocatalysts modified by nickel hydroxide were prepared and characterized by different experimental techniques including X-ray diffraction, UV–vis spectroscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. The obtained photocatalysts were tested in the photocatalytic hydrogen evolution from ethanol aqueous solutions under visible light irradiation (λ = 450 nm). The nickel-modified photocatalysts were found to be more active than the zinc-modified ones. The reasons of high activity of Ni-contained photocatalysts and their transformations during the photocatalytic hydrogen production were discussed. The dependences of hydrogen production rate on ethanol and NaOH concentrations were obtained, the highest value of the photocatalytic activity was 27 mmol h−1 g−1 for 1%Pt/10% Ni(OH)2/Cd0.3Zn0.7S (50% vol. ethanol, 1 M NaOH), apparent quantum efficiency exceeded 90%. A kinetic model describing the experimental data was proposed.
Dina V. Markovskaya; Ekaterina A. Kozlova; Eugeniy Yu. Gerasimov; Andrey V. Bukhtiyarov; Denis V. Kozlov. New photocatalysts based on Cd0.3Zn0.7S and Ni(OH)2 for hydrogen production from ethanol aqueous solutions under visible light. Applied Catalysis A: General 2018, 563, 170 -176.
AMA StyleDina V. Markovskaya, Ekaterina A. Kozlova, Eugeniy Yu. Gerasimov, Andrey V. Bukhtiyarov, Denis V. Kozlov. New photocatalysts based on Cd0.3Zn0.7S and Ni(OH)2 for hydrogen production from ethanol aqueous solutions under visible light. Applied Catalysis A: General. 2018; 563 ():170-176.
Chicago/Turabian StyleDina V. Markovskaya; Ekaterina A. Kozlova; Eugeniy Yu. Gerasimov; Andrey V. Bukhtiyarov; Denis V. Kozlov. 2018. "New photocatalysts based on Cd0.3Zn0.7S and Ni(OH)2 for hydrogen production from ethanol aqueous solutions under visible light." Applied Catalysis A: General 563, no. : 170-176.
Dina V. Markovskaya; Ekaterina A. Kozlova; Olga A. Stonkus; Andrey A. Saraev; Svetlana V. Cherepanova; Valentin N. Parmon. Evolution of the state of copper-based co-catalysts of the Cd0.3Zn0.7S photocatalyst at the photoproduction of hydrogen under action of visible light. International Journal of Hydrogen Energy 2017, 42, 30067 -30075.
AMA StyleDina V. Markovskaya, Ekaterina A. Kozlova, Olga A. Stonkus, Andrey A. Saraev, Svetlana V. Cherepanova, Valentin N. Parmon. Evolution of the state of copper-based co-catalysts of the Cd0.3Zn0.7S photocatalyst at the photoproduction of hydrogen under action of visible light. International Journal of Hydrogen Energy. 2017; 42 (51):30067-30075.
Chicago/Turabian StyleDina V. Markovskaya; Ekaterina A. Kozlova; Olga A. Stonkus; Andrey A. Saraev; Svetlana V. Cherepanova; Valentin N. Parmon. 2017. "Evolution of the state of copper-based co-catalysts of the Cd0.3Zn0.7S photocatalyst at the photoproduction of hydrogen under action of visible light." International Journal of Hydrogen Energy 42, no. 51: 30067-30075.
An efficient and an easily scalable photocatalyst with CdS nanoparticles placed on the outer surface and inside halloysite clay nanotubes with cadmium sulfide content of ca. 3 wt % was developed. The CdS/halloysite core–shell tubule nanocomposites showed a superior catalytic activity and a high stability in the release of hydrogen under visible radiation without cocatalysts or noble metal doping. The specific activity was of 20 mmol of hydrogen per hour per gram of CdS. The suggested approach opens the way to an inexpensive production of highly efficient mesoporous catalyst based on a natural, abundantly available clay support.
Vladimir A. Vinokurov; Anna Stavitskaya; Evgenii V. Ivanov; Pavel Gushchin; Denis V. Kozlov; Anna Yu. Kurenkova; Pavel A. Kolinko; Ekaterina A. Kozlova; Yuri M. Lvov. Halloysite Nanoclay Based CdS Formulations with High Catalytic Activity in Hydrogen Evolution Reaction under Visible Light Irradiation. ACS Sustainable Chemistry & Engineering 2017, 5, 11316 -11323.
AMA StyleVladimir A. Vinokurov, Anna Stavitskaya, Evgenii V. Ivanov, Pavel Gushchin, Denis V. Kozlov, Anna Yu. Kurenkova, Pavel A. Kolinko, Ekaterina A. Kozlova, Yuri M. Lvov. Halloysite Nanoclay Based CdS Formulations with High Catalytic Activity in Hydrogen Evolution Reaction under Visible Light Irradiation. ACS Sustainable Chemistry & Engineering. 2017; 5 (12):11316-11323.
Chicago/Turabian StyleVladimir A. Vinokurov; Anna Stavitskaya; Evgenii V. Ivanov; Pavel Gushchin; Denis V. Kozlov; Anna Yu. Kurenkova; Pavel A. Kolinko; Ekaterina A. Kozlova; Yuri M. Lvov. 2017. "Halloysite Nanoclay Based CdS Formulations with High Catalytic Activity in Hydrogen Evolution Reaction under Visible Light Irradiation." ACS Sustainable Chemistry & Engineering 5, no. 12: 11316-11323.
The photocatalytic properties of a Cd0.3Zn0.7S photocatalyst modified either by NiS doping or by supporting NiS on the catalyst surface were studied. The obtained samples were investigated by different characterization techniques, including X-ray diffraction (XRD), UV/Vis diffuse reflectance spectroscopy (DRS), high-resolution transmission electron microscopy (HRTEM), and X-ray photoelectron spectroscopy (XPS). The photocatalytic activity was measured in hydrogen evolution from aqueous solutions of Na2S/Na2SO3 under visible-light irradiation (λ=450 nm). Nickel modifications on the surface and in bulk led to improvements in the photocatalytic activity compared to the pristine sample. The samples modified in bulk underwent changes in composition and an increase of the catalytic activity during illumination was measured. In contrast, the rate of hydrogen photoproduction for the photocatalysts modified by NiS on the surface did not change appreciably. The highest photocatalytic activity values were 11.2 mmol h−1 g−1 and 12.8 mmol h−1 g−1 for the 0.3 % NiS/Cd0.3Zn0.7S and Ni0.001Cd0.3Zn0.7S1.001 photocatalysts, respectively.
Dina V. Markovskaya; Ekaterina A. Kozlova; Svetlana V. Cherepanova; Pavel A. Kolinko; Eugeny Yu. Gerasimov; Valentin N. Parmon. Doping or Deposition of NiS on Cd0.3 Zn0.7 S Photocatalysts: Optimising Photocatalytic Hydrogen Evolution. ChemPhotoChem 2017, 1, 575 -581.
AMA StyleDina V. Markovskaya, Ekaterina A. Kozlova, Svetlana V. Cherepanova, Pavel A. Kolinko, Eugeny Yu. Gerasimov, Valentin N. Parmon. Doping or Deposition of NiS on Cd0.3 Zn0.7 S Photocatalysts: Optimising Photocatalytic Hydrogen Evolution. ChemPhotoChem. 2017; 1 (12):575-581.
Chicago/Turabian StyleDina V. Markovskaya; Ekaterina A. Kozlova; Svetlana V. Cherepanova; Pavel A. Kolinko; Eugeny Yu. Gerasimov; Valentin N. Parmon. 2017. "Doping or Deposition of NiS on Cd0.3 Zn0.7 S Photocatalysts: Optimising Photocatalytic Hydrogen Evolution." ChemPhotoChem 1, no. 12: 575-581.
The X-ray diffraction (XRD) pattern of a deleterious phase in the photocatalyst based on Cd1 − xZnxS/Zn(OH)2contains two relatively intense asymmetric peaks withd-spacings of 2.72 and 1.56 Å. Very small diffraction peaks with interplanar distances of (d) ≃ 8.01, 5.40, 4.09, 3.15, 2.49 and 1.35 Å are characteristic of this phase but not always observed. To identify this phase, the XRD patterns for sheet-like hydroxide β-Zn(OH)2and sheet-like hydrozincite Zn5(CO3)2(OH)6as well as for turbostratic hydrozincite were simulated. It is shown that the XRD pattern calculated on the basis of the last model gives the best correspondence with experimental data. Distances between layers in the turbostratically disordered hydrozincite fluctuate aroundd≃ 8.01 Å. This average layer-to-layer distance is significantly higher than the interlayer distance 6.77 Å in the ordered Zn5(CO3)2(OH)6probably due to a deficiency of CO32−anions, excess OH−and the presence of water molecules in the interlayers. It is shown by variable-temperature XRD and thermogravimetric analysis (TGA) that the nanocrystalline turbostratic nonstoichiometric hydrozincite-like phase is quite thermostable. It decomposes into ZnO in air above 473 K.
Svetlana Cherepanova; Dina Markovskaya; Ekaterina Kozlova. Identification of a deleterious phase in photocatalyst based on Cd1 − xZnxS/Zn(OH)2by simulated XRD patterns. Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials 2017, 73, 360 -368.
AMA StyleSvetlana Cherepanova, Dina Markovskaya, Ekaterina Kozlova. Identification of a deleterious phase in photocatalyst based on Cd1 − xZnxS/Zn(OH)2by simulated XRD patterns. Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials. 2017; 73 (3):360-368.
Chicago/Turabian StyleSvetlana Cherepanova; Dina Markovskaya; Ekaterina Kozlova. 2017. "Identification of a deleterious phase in photocatalyst based on Cd1 − xZnxS/Zn(OH)2by simulated XRD patterns." Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials 73, no. 3: 360-368.
Phantoms are an imitation of biological tissue, which are physically modeling the propagation of light in biological tissues. They are required for different purposes, and also repeatability of results is achieved with it. So the fabrication of solid tissue phantoms containing high absorb or luminescence nanoparticles is actual problems for experimenters. The work describes fabrication processing and characteristics of solid tissue phantoms. © (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Alexander A. Skaptsov; Sergey O. Ustalkov; Olga A. Savenko; Anastasia S. Novikova; Ekaterina A. Kozlova; Vyacheslav I. Kochubey. Fabrication of tissue phantoms with embedded CdSe/ZnS quantum dots, gold and upconversion nanoparticles. Saratov Fall Meeting 2016: Optical Technologies in Biophysics and Medicine XVIII 2017, 10336, 1033616 .
AMA StyleAlexander A. Skaptsov, Sergey O. Ustalkov, Olga A. Savenko, Anastasia S. Novikova, Ekaterina A. Kozlova, Vyacheslav I. Kochubey. Fabrication of tissue phantoms with embedded CdSe/ZnS quantum dots, gold and upconversion nanoparticles. Saratov Fall Meeting 2016: Optical Technologies in Biophysics and Medicine XVIII. 2017; 10336 ():1033616.
Chicago/Turabian StyleAlexander A. Skaptsov; Sergey O. Ustalkov; Olga A. Savenko; Anastasia S. Novikova; Ekaterina A. Kozlova; Vyacheslav I. Kochubey. 2017. "Fabrication of tissue phantoms with embedded CdSe/ZnS quantum dots, gold and upconversion nanoparticles." Saratov Fall Meeting 2016: Optical Technologies in Biophysics and Medicine XVIII 10336, no. : 1033616.