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Anna Kurenkova
Federal Research Center Boreskov Institute of Catalysis SB RAS, Lavrentieva Ave. 5, 630090 Novosibirsk, Russia

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Journal article
Published: 20 July 2021 in Catalysts
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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.

ACS Style

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 Style

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 (7):870.

Chicago/Turabian Style

Anna 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.

Journal article
Published: 01 February 2021 in Nanomaterials
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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).

ACS Style

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 Style

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 (2):355.

Chicago/Turabian Style

Ksenia 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.

Journal article
Published: 13 January 2021 in International Journal of Hydrogen Energy
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Titanium foil was anodized to grow titanium dioxide nanotubes (TiO2 NT) by using an original technique. A solution of ethylene glycol and ammonium fluoride with a concentration of 0.5 wt% was employed as electrolyte, corrosion-resistant steel was chosen as the cathode material. Anodic oxidation was carried out potentiostatically at a voltage of 60 V at ambient temperature for 90 min. Modification of as prepared TiO2 NT were modified by calcination in air at 350°C for 4 h. Platinization of TiO2 NT was carried out by chemical reduction of platinum from H2PtCl6 solution by NaBH4 solution. Photocatalyst characterization was performed by using XRD, BET, SEM, XPS techniques. It was found that the calcination of as-prepared TiO2 NT leads to 6-fold increase of the photocatalytic activity under UV-irradiation. The enhanced activity of TiO2 NT is associated with the developed specific surface area and unique morphology of TiO2 NT. This results in high rate of separation of photogenerated excited electrons and holes. Due to high separation rate the catalytic activity increases substantially.

ACS Style

Albina A. Valeeva; Irina B. Dorosheva; Ekaterina A. Kozlova; Anna A. Sushnikova; Anna Yu Kurenkova; Аndrey А. Saraev; Hartrmuth Schroettner; Аndrey А. Rempel. Solar photocatalysts based on titanium dioxide nanotubes for hydrogen evolution from aqueous solutions of ethanol. International Journal of Hydrogen Energy 2021, 46, 16917 -16924.

AMA Style

Albina A. Valeeva, Irina B. Dorosheva, Ekaterina A. Kozlova, Anna A. Sushnikova, Anna Yu Kurenkova, Аndrey А. Saraev, Hartrmuth Schroettner, Аndrey А. Rempel. Solar photocatalysts based on titanium dioxide nanotubes for hydrogen evolution from aqueous solutions of ethanol. International Journal of Hydrogen Energy. 2021; 46 (32):16917-16924.

Chicago/Turabian Style

Albina A. Valeeva; Irina B. Dorosheva; Ekaterina A. Kozlova; Anna A. Sushnikova; Anna Yu Kurenkova; Аndrey А. Saraev; Hartrmuth Schroettner; Аndrey А. Rempel. 2021. "Solar photocatalysts based on titanium dioxide nanotubes for hydrogen evolution from aqueous solutions of ethanol." International Journal of Hydrogen Energy 46, no. 32: 16917-16924.

Paper
Published: 15 September 2020 in RSC Advances
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Simultaneous presence of ethanol and methylene blue was shown to provide the most efficient hydrogen production and methylene blue removal.

ACS Style

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 Style

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 (56):34137-34148.

Chicago/Turabian Style

Dina 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.