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Mesoporous silica nanoparticles (NPs) exhibiting magnetic, fluorescent, or magneto-fluorescent properties have attracted enormous attention because of the rapid development of theranostic nanoprobes. In this study, we report the simple yet efficient soaking method for the development of fluorescent mesoporous silica NPs within the size range of ~71–105 nm. Nitrogen adsorption-desorption experiments revealed that prepared SiO2-Eu NPs exhibit a large surface area of ~649 m2 g−1 that is suitable for potential drug delivery purposes. Photoluminescence study suggested that SiO2-Eu NPs emit a typical red emission with a maximum of ~615 nm and a quantum yield of ~7.94%. It is suggested that the proposed method can be extended to the fabrication of other metal-doped silica NPs.
Anara Molkenova; Zhanbota Oteulina; Timur Sh Atabaev. Europium (III)-doped mesoporous silica nanoparticles (SiO2-Eu NPs) prepared via the soaking method. Results in Materials 2021, 11, 100209 .
AMA StyleAnara Molkenova, Zhanbota Oteulina, Timur Sh Atabaev. Europium (III)-doped mesoporous silica nanoparticles (SiO2-Eu NPs) prepared via the soaking method. Results in Materials. 2021; 11 ():100209.
Chicago/Turabian StyleAnara Molkenova; Zhanbota Oteulina; Timur Sh Atabaev. 2021. "Europium (III)-doped mesoporous silica nanoparticles (SiO2-Eu NPs) prepared via the soaking method." Results in Materials 11, no. : 100209.
In this study, hierarchically-structured hollow CuO microspheres were utilized for potential solar light-assisted degradation of a model pollutant dye. Morphological analysis revealed that prepared hollow CuO microspheres (~9–16 µm) composed of small crystal strips pointed towards the center of the microsphere. Nitrogen adsorption–desorption experiments revealed that prepared hollow CuO microspheres have a specific surface area of ~12.184 m2/g. It was shown that prepared CuO microspheres can be used as an effective H2O2-assisted solar light-activated photocatalyst. In particular, prepared CuO microspheres significantly accelerate the degradation rate of aqueous Rhodamine B dye solution as compared to some other CuO structures reported to date. The recyclability study revealed that these CuO microspheres can be re-used several times without losing the photocatalytic activity.
Anara Molkenova; Sagyntay Sarsenov; Shanazar Atabaev; Laura Khamkhash; Timur Sh. Atabaev. Hierarchically-structured hollow CuO microparticles for efficient photo-Fenton like degradation of a model pollutant dye under the solar light illumination. Environmental Nanotechnology, Monitoring & Management 2021, 16, 100507 .
AMA StyleAnara Molkenova, Sagyntay Sarsenov, Shanazar Atabaev, Laura Khamkhash, Timur Sh. Atabaev. Hierarchically-structured hollow CuO microparticles for efficient photo-Fenton like degradation of a model pollutant dye under the solar light illumination. Environmental Nanotechnology, Monitoring & Management. 2021; 16 ():100507.
Chicago/Turabian StyleAnara Molkenova; Sagyntay Sarsenov; Shanazar Atabaev; Laura Khamkhash; Timur Sh. Atabaev. 2021. "Hierarchically-structured hollow CuO microparticles for efficient photo-Fenton like degradation of a model pollutant dye under the solar light illumination." Environmental Nanotechnology, Monitoring & Management 16, no. : 100507.
The design of multifunctional agents became a pivotal task for the development of personalized medicine. In this study, we investigated the potential applicability of mesoporous silica decorated with gold nanoparticles (MS-Au NPs) for effective X-ray attenuation in computed tomography (CT) and as a potential vehicle for drug delivery. The physicochemical properties and X-ray attenuation efficiency of prepared MS-Au NPs were systematically studied using a range of characterization techniques and clinical CT correspondingly. CT analysis revealed that prepared MS-Au NPs exhibit high X-ray attenuation efficiency ∼9.8 HU/mM (Hounsfield Units per mM of Au) as compared to other perspective metal-based nanoparticles reported in the literature. An improved X-ray attenuation efficiency can be attributed to the presence of a large amount of Au nanoparticles in a confined volume unit.
Tomiris Mulikova; Aiganym Abduraimova; Anara Molkenova; Svetlana Em; Bakyt Duisenbayeva; Dong-Wook Han; Timur Sh. Atabaev. Mesoporous silica decorated with gold nanoparticles as a promising nanoprobe for effective CT X-ray attenuation and potential drug delivery. Nano-Structures & Nano-Objects 2021, 26, 100712 .
AMA StyleTomiris Mulikova, Aiganym Abduraimova, Anara Molkenova, Svetlana Em, Bakyt Duisenbayeva, Dong-Wook Han, Timur Sh. Atabaev. Mesoporous silica decorated with gold nanoparticles as a promising nanoprobe for effective CT X-ray attenuation and potential drug delivery. Nano-Structures & Nano-Objects. 2021; 26 ():100712.
Chicago/Turabian StyleTomiris Mulikova; Aiganym Abduraimova; Anara Molkenova; Svetlana Em; Bakyt Duisenbayeva; Dong-Wook Han; Timur Sh. Atabaev. 2021. "Mesoporous silica decorated with gold nanoparticles as a promising nanoprobe for effective CT X-ray attenuation and potential drug delivery." Nano-Structures & Nano-Objects 26, no. : 100712.
Rare-earth metal oxide nanoparticles considered promising contrast agents for x-ray computed tomography (CT) and magnetic resonance imaging (MRI). The main purpose of this study is to investigate the potential applicability of polyethyleneimine (PEI)-coated Eu2O3 and Dy2O3 nanoparticles (NPs) for CT x-ray attenuation. Morphology and other physicochemical properties of prepared samples were systematically investigated using a range of characterization tools. Preliminary cytotoxicity experiments with L-929 fibroblastic cells suggested that both samples have no significant toxicity at concentrations below 100 μg ml−1. Clinical CT analysis shows that [email protected] NPs exhibit higher x-ray attenuation efficiency (~8 HU mM−1) as compared to [email protected] NPs (~5 HU mM−1).
Valentina Olifirenko; Aiganym Abduraimova; Moon Sung Kang; Iruthayapandi Selestin Raja; Bakyt Duisenbayeva; Anara Molkenova; Laura Khamkhash; Yoon-Hwae Hwang; Dong-Wook Han; Timur Sh Atabaev. Potential applicability of polyethyleneimine PEI-coated Eu2O3 and Dy2O3 nanoparticles for contrast enhancement in computed tomography. Nano Express 2021, 2, 010022 .
AMA StyleValentina Olifirenko, Aiganym Abduraimova, Moon Sung Kang, Iruthayapandi Selestin Raja, Bakyt Duisenbayeva, Anara Molkenova, Laura Khamkhash, Yoon-Hwae Hwang, Dong-Wook Han, Timur Sh Atabaev. Potential applicability of polyethyleneimine PEI-coated Eu2O3 and Dy2O3 nanoparticles for contrast enhancement in computed tomography. Nano Express. 2021; 2 (1):010022.
Chicago/Turabian StyleValentina Olifirenko; Aiganym Abduraimova; Moon Sung Kang; Iruthayapandi Selestin Raja; Bakyt Duisenbayeva; Anara Molkenova; Laura Khamkhash; Yoon-Hwae Hwang; Dong-Wook Han; Timur Sh Atabaev. 2021. "Potential applicability of polyethyleneimine PEI-coated Eu2O3 and Dy2O3 nanoparticles for contrast enhancement in computed tomography." Nano Express 2, no. 1: 010022.
To date, Ag-based nanomaterials have demonstrated a high potential to overcome antibiotic resistance issues. However, bare Ag nanomaterials are prone to agglomeration in the biological environment, which results in a loss of antibacterial activity over time. Furthermore, it is still challenging to collect small-sized Ag nanomaterials right after the synthesis process. In this study, spherical-shaped Ag nanoparticles (NPs) (~6–10 nm) were attached on the surface of cetyltrimethylammonium bromide (CTAB)-loaded mesoporous silica nanoparticles (MSNs) (~100–110 nm). Antibacterial activity tests suggested that the obtained nanocomposite can be used as a highly efficient antibacterial agent against both Gram-negative and Gram-positive bacterial strains. The minimum inhibitory concentration (MIC) recalculated to pure Ag weight in nanocomposite was found to be ~1.84 µg/mL (for Escherichia coli) and ~0.92 µg/mL (for Staphylococcus aureus)—significantly smaller compared to values reported to date. The improved antibacterial activity of the prepared nanocomposite can be attributed to the even distribution of non-aggregated Ag NPs per volume unit and the presence of CTAB in the nanocomposite pores.
Aiganym Abduraimova; Anara Molkenova; Assem Duisembekova; Tomiris Mulikova; Damira Kanayeva; Timur Atabaev. Cetyltrimethylammonium Bromide (CTAB)-Loaded SiO2–Ag Mesoporous Nanocomposite as an Efficient Antibacterial Agent. Nanomaterials 2021, 11, 477 .
AMA StyleAiganym Abduraimova, Anara Molkenova, Assem Duisembekova, Tomiris Mulikova, Damira Kanayeva, Timur Atabaev. Cetyltrimethylammonium Bromide (CTAB)-Loaded SiO2–Ag Mesoporous Nanocomposite as an Efficient Antibacterial Agent. Nanomaterials. 2021; 11 (2):477.
Chicago/Turabian StyleAiganym Abduraimova; Anara Molkenova; Assem Duisembekova; Tomiris Mulikova; Damira Kanayeva; Timur Atabaev. 2021. "Cetyltrimethylammonium Bromide (CTAB)-Loaded SiO2–Ag Mesoporous Nanocomposite as an Efficient Antibacterial Agent." Nanomaterials 11, no. 2: 477.
In this study, magnetic Fe3O4 particles and Fe3O4-Ag0 nanocomposites were prepared by a facile and green method, fully characterized and used for the removal of Hg2+ from water. Characterizations showed that the Fe3O4 particles are quasi-spherical with an average diameter of 217 nm and metallic silver nanoparticles formed on the surface with a size of 23–41 nm. The initial Hg2+ removal rate was very fast followed by a slow increase and the maximum solid phase loading was 71.3 mg/g for the Fe3O4-Ag0 and 28 mg/g for the bare Fe3O4. The removal mechanism is complex, involving Hg2+ adsorption and reduction, Fe2+ and Ag0 oxidation accompanied with reactions of Cl− with Hg+ and Ag+. The facile and green synthesis process, the fast kinetics and high removal capacity and the possibility of magnetic separation make Fe3O4-Ag0 nanocomposites attractive materials for the removal of Hg2+ from water.
Vassilis Inglezakis; Aliya Kurbanova; Anara Molkenova; Antonis Zorpas; Timur Atabaev. Magnetic Fe3O4-Ag0 Nanocomposites for Effective Mercury Removal from Water. Sustainability 2020, 12, 5489 .
AMA StyleVassilis Inglezakis, Aliya Kurbanova, Anara Molkenova, Antonis Zorpas, Timur Atabaev. Magnetic Fe3O4-Ag0 Nanocomposites for Effective Mercury Removal from Water. Sustainability. 2020; 12 (13):5489.
Chicago/Turabian StyleVassilis Inglezakis; Aliya Kurbanova; Anara Molkenova; Antonis Zorpas; Timur Atabaev. 2020. "Magnetic Fe3O4-Ag0 Nanocomposites for Effective Mercury Removal from Water." Sustainability 12, no. 13: 5489.
Transparent titanium oxide thin films attract enormous attention from the scientific community because of their prominent properties, such as low-cost, chemical stability, and optical transparency in the visible region. In this study, we developed an easy and scalable solution-based process for the deposition of transparent TiOx thin films on glass substrates. We showed that the proposed method is also suitable for the fabrication of metal-doped TiOx thin films. As proof-of-the-concept, europium Eu(III) ions were introduced into TiOx film. A photoluminescence (PL) study revealed that Eu-doped TiOx thin films showed strong red luminescence associated with 5D0→7Fj relaxation transitions in Eu (III). We found that prepared TiOx thin films significantly reduce the transmittance of destructive UV radiation; a feature that can be useful for the protection of photovoltaic devices. In addition, transparent and luminescent TiOx thin films can be utilized for potential security labeling.
Anara Molkenova; Laura Khamkhash; Ainur Zhussupbekova; Kuanysh Zhussupbekov; Sagyntay Sarsenov; Izumi Taniguchi; Igor Shvets; Timur Sh. Atabaev. Solution-Based Deposition of Transparent Eu-Doped Titanium Oxide Thin Films for Potential Security Labeling and UV Screening. Nanomaterials 2020, 10, 1132 .
AMA StyleAnara Molkenova, Laura Khamkhash, Ainur Zhussupbekova, Kuanysh Zhussupbekov, Sagyntay Sarsenov, Izumi Taniguchi, Igor Shvets, Timur Sh. Atabaev. Solution-Based Deposition of Transparent Eu-Doped Titanium Oxide Thin Films for Potential Security Labeling and UV Screening. Nanomaterials. 2020; 10 (6):1132.
Chicago/Turabian StyleAnara Molkenova; Laura Khamkhash; Ainur Zhussupbekova; Kuanysh Zhussupbekov; Sagyntay Sarsenov; Izumi Taniguchi; Igor Shvets; Timur Sh. Atabaev. 2020. "Solution-Based Deposition of Transparent Eu-Doped Titanium Oxide Thin Films for Potential Security Labeling and UV Screening." Nanomaterials 10, no. 6: 1132.
Recently, low-cost hematite (α-Fe2O3) metal oxide semiconductor has attracted enormous attention for the photoelectrochemical water splitting and photocatalytic applications. The main purpose of this work is to study the effects of Sn-doping on the photocatalytic properties of hematite nanoparticles (NPs). Morphology and physicochemical properties of prepared samples were analyzed using X-ray diffraction analysis (XRD), transmission electron microscope (TEM), and UV-vis spectroscopy. Rhodamine B (RB) dye was used as a model organic pollutant to test the photocatalytic activity of prepared samples. It was found that the photocatalytic activity of Sn-doped hematite NPs was higher than that of the undoped hematite NPs. The recyclability tests suggested that 3 mol% Sn-doped hematite NPs can be used as a promising reusable photocatalyst for dyes degradation.
Svetlana Em; Mussa Yedigenov; Laura Khamkhash; Anara Molkenova; Timur Sh. Atabaev. Sn-Doped Hematite Nanoparticles for Potential Photocatalytic Dye Degradation. IOP Conference Series: Materials Science and Engineering 2020, 739, 012042 .
AMA StyleSvetlana Em, Mussa Yedigenov, Laura Khamkhash, Anara Molkenova, Timur Sh. Atabaev. Sn-Doped Hematite Nanoparticles for Potential Photocatalytic Dye Degradation. IOP Conference Series: Materials Science and Engineering. 2020; 739 (1):012042.
Chicago/Turabian StyleSvetlana Em; Mussa Yedigenov; Laura Khamkhash; Anara Molkenova; Timur Sh. Atabaev. 2020. "Sn-Doped Hematite Nanoparticles for Potential Photocatalytic Dye Degradation." IOP Conference Series: Materials Science and Engineering 739, no. 1: 012042.
In this study, we described the quick synthesis strategy of stable colloidal silica particles encapsulated with a fluorescent dye. Atomic Force Microscopy AFM, Fourier-Transform Infrared Spectroscopy FTIR, and Fluorescence Spectroscopy FS were utilized to characterize the obtained silica particles. AFM analysis revealed that obtained silica particles have a spherical shape with a mean size of 210 ± 13 nm. FS analysis showed that fluorescent dye was successfully incorporated into a silica matrix. In particular, eye-visible green fluorescence emission with a peak maximum at 526 nm was detected. The emission stability of prepared particles was tested in a biologically-relevant pH range, under constant UV irradiation and at different storage time intervals.
Tomiris Mulikova; Laura Khamkhash; Kanat Dukenbayev; Anara Molkenova; Timur Sh. Atabaev. Stable Colloidal Silica Particles Doped with a Fluorescent Dye. IOP Conference Series: Materials Science and Engineering 2020, 739, 012039 .
AMA StyleTomiris Mulikova, Laura Khamkhash, Kanat Dukenbayev, Anara Molkenova, Timur Sh. Atabaev. Stable Colloidal Silica Particles Doped with a Fluorescent Dye. IOP Conference Series: Materials Science and Engineering. 2020; 739 (1):012039.
Chicago/Turabian StyleTomiris Mulikova; Laura Khamkhash; Kanat Dukenbayev; Anara Molkenova; Timur Sh. Atabaev. 2020. "Stable Colloidal Silica Particles Doped with a Fluorescent Dye." IOP Conference Series: Materials Science and Engineering 739, no. 1: 012039.
Aktanberdi Askerbay; Anara Molkenova; Timur Sh. Atabaev. Latent fingerprint detection with luminescent Y2O3:Eu3+ nanoparticles. Materials Today: Proceedings 2020, 20, 245 -248.
AMA StyleAktanberdi Askerbay, Anara Molkenova, Timur Sh. Atabaev. Latent fingerprint detection with luminescent Y2O3:Eu3+ nanoparticles. Materials Today: Proceedings. 2020; 20 ():245-248.
Chicago/Turabian StyleAktanberdi Askerbay; Anara Molkenova; Timur Sh. Atabaev. 2020. "Latent fingerprint detection with luminescent Y2O3:Eu3+ nanoparticles." Materials Today: Proceedings 20, no. : 245-248.
Upconversion (UC) lanthanide nanomaterials have attracted enormous attention in the last two decades thanks to their unique ability to convert low-energy infrared photons into high-energy photons. In this mini-review, we briefly discussed the recent achievements related to the direct utilization of UC optical nanomaterials for photocatalysis and photovoltaic applications. In particular, selected examples of UC-containing devices/nanocomposites with improved performance were covered. In addition, we outlined some challenges and future trends associated with the widespread usage of UC nanomaterials.
Timur Atabaev; Anara Molkenova. Upconversion optical nanomaterials applied for photocatalysis and photovoltaics: Recent advances and perspectives. Frontiers of Materials Science 2019, 13, 335 -341.
AMA StyleTimur Atabaev, Anara Molkenova. Upconversion optical nanomaterials applied for photocatalysis and photovoltaics: Recent advances and perspectives. Frontiers of Materials Science. 2019; 13 (4):335-341.
Chicago/Turabian StyleTimur Atabaev; Anara Molkenova. 2019. "Upconversion optical nanomaterials applied for photocatalysis and photovoltaics: Recent advances and perspectives." Frontiers of Materials Science 13, no. 4: 335-341.
In this study, fluorescent carbon nanoparticles (CNPs) with quantum yield of 6.08% have been synthesized using a hydrothermal method within a short period of time (t = 30 min). Fluorescence spectroscopy (FS) revealed that CNPs demonstrate excellent photostability which is suitable for prolonged bioimaging applications. Cytotoxicity study with L-929 fibroblastic cells showed that prepared CNPs are nontoxic even at relatively high concentrations up to 250 µg/ml. Strong green fluorescence signal observed from L-929 cells suggested that CNPs can be utilized for in-vitro tissues/cells bioimaging applications.
Anara Molkenova; Aidana Toleshova; Su-Jin Song; Moon Sung Kang; Aiganym Abduraimova; Dong-Wook Han; Timur Sh. Atabaev. Rapid synthesis of nontoxic and photostable carbon nanoparticles for bioimaging applications. Materials Letters 2019, 261, 127012 .
AMA StyleAnara Molkenova, Aidana Toleshova, Su-Jin Song, Moon Sung Kang, Aiganym Abduraimova, Dong-Wook Han, Timur Sh. Atabaev. Rapid synthesis of nontoxic and photostable carbon nanoparticles for bioimaging applications. Materials Letters. 2019; 261 ():127012.
Chicago/Turabian StyleAnara Molkenova; Aidana Toleshova; Su-Jin Song; Moon Sung Kang; Aiganym Abduraimova; Dong-Wook Han; Timur Sh. Atabaev. 2019. "Rapid synthesis of nontoxic and photostable carbon nanoparticles for bioimaging applications." Materials Letters 261, no. : 127012.
There has been a great interest in the development of new functional contrast agents for biomedical applications. In this study, we report the preparation of bifunctional core–shell nanoprobes that can be used as a T 1-weighted magnetic resonance imaging (MRI) contrast agent and fluorescent marker for cells imaging. Various analysis techniques were utilized to analyze the physicochemical properties of prepared nanoprobes. Small-animal MRI scanner (1.5 T) was utilized to measure the T 1-weighted relaxivity rate (r 1 = 5.57 ± 0.33 mM–1 s–1) of prepared nanoprobes. In addition, we showed that prepared nanoprobes can be also used for optical imaging of living cells. A pilot cytotoxicity study on L-929 fibroblastic cells showed that prepared nanoprobes are relatively safe at concentrations ≤8 μg/ml. Thus, prepared samples can be utilized as a promising bifunctional nanoprobe for in-vivo small animal MRI imaging and in-vitro tissues/cells study.
Anara Molkenova; Yong Cheol Shin; Moon Sung Kang; Tomiris Mulikova; Dong-Wook Han; Timur Atabaev. Gd2O3 Nanoparticles Coated with a Fluorescent Carbon Layer for Potential T1-Weighted Magnetic Resonance and Cells Imaging. Nanoscience and Nanotechnology Letters 2019, 11, 813 -817.
AMA StyleAnara Molkenova, Yong Cheol Shin, Moon Sung Kang, Tomiris Mulikova, Dong-Wook Han, Timur Atabaev. Gd2O3 Nanoparticles Coated with a Fluorescent Carbon Layer for Potential T1-Weighted Magnetic Resonance and Cells Imaging. Nanoscience and Nanotechnology Letters. 2019; 11 (6):813-817.
Chicago/Turabian StyleAnara Molkenova; Yong Cheol Shin; Moon Sung Kang; Tomiris Mulikova; Dong-Wook Han; Timur Atabaev. 2019. "Gd2O3 Nanoparticles Coated with a Fluorescent Carbon Layer for Potential T1-Weighted Magnetic Resonance and Cells Imaging." Nanoscience and Nanotechnology Letters 11, no. 6: 813-817.
The development of low-cost optical nanosensors for quick and selective metals detection in water is of high demand. In this study, we report on the fast and low-cost fabrication of phosphorus-doped carbon dots (P-CDs) for potential low-concentration detection of ferric ions in water. Prepared P-CDs have a narrow size distribution of 2.8 ± 0.94 nm and excitation-dependent fluorescence emission. The maximum emission was detected at 452 nm with a quantum yield of 6.73 ± 0.04%. Selectivity test reveals that prepared P-CDs are highly selective to ferric ions in water. We showed that P-CDs can be utilized as fluorescent nanosensor for sensitive detection of Fe(III) ions in the range of 1–20 ppm.
Anara Molkenova; Timur Sh. Atabaev. Phosphorus-doped carbon dots (P-CDs) from dextrose for low-concentration ferric ions sensing in water. Optik 2019, 187, 70 -73.
AMA StyleAnara Molkenova, Timur Sh. Atabaev. Phosphorus-doped carbon dots (P-CDs) from dextrose for low-concentration ferric ions sensing in water. Optik. 2019; 187 ():70-73.
Chicago/Turabian StyleAnara Molkenova; Timur Sh. Atabaev. 2019. "Phosphorus-doped carbon dots (P-CDs) from dextrose for low-concentration ferric ions sensing in water." Optik 187, no. : 70-73.
Recently, fluorescent carbon nanostructures have attracted enormous attention thanks to their excellent optical properties, low-cost, chemical inertness and stability. In this study, we demonstrated a quick, facile, environment-friendly and low-cost synthesis method for the preparation of fluorescent nitrogen-doped carbon nanoparticles (N-CNPs). Prepared N-CNPs have excitation-dependent fluorescent properties and demonstrate high selectivity towards Fe(III) ions in water. We found that prepared N-CNPs can be used for sensitive detection of Fe(III) ions in the range of 1–30 ppm. Therefore, fluorescent N-CNPs can be a promising material for fast and low-cost analysis of Fe(III) ions in water.
Anara Molkenova; Yerkezhan Amangeldinova; Dimaral Aben; Saya Sayatova; Timur Sh. Atabaev. Quick synthesis of fluorescent nitrogen-doped carbon nanoparticles for selective and sensitive Fe(III) detection in water. Sensing and Bio-Sensing Research 2019, 23, 100271 .
AMA StyleAnara Molkenova, Yerkezhan Amangeldinova, Dimaral Aben, Saya Sayatova, Timur Sh. Atabaev. Quick synthesis of fluorescent nitrogen-doped carbon nanoparticles for selective and sensitive Fe(III) detection in water. Sensing and Bio-Sensing Research. 2019; 23 ():100271.
Chicago/Turabian StyleAnara Molkenova; Yerkezhan Amangeldinova; Dimaral Aben; Saya Sayatova; Timur Sh. Atabaev. 2019. "Quick synthesis of fluorescent nitrogen-doped carbon nanoparticles for selective and sensitive Fe(III) detection in water." Sensing and Bio-Sensing Research 23, no. : 100271.
In this study, fluorescent nitrogen-doped carbon nanoparticles (N-CNPs) were prepared using a facile and green hydrothermal method. A number of characterization techniques were employed to analyze the physicochemical properties of prepared N-CNPs. Fluorescence spectroscopy revealed that N-CNPs exhibit bright fluorescence emission (maximum at 502 nm) under the continuous 400 nm excitation. Prepared N-CNPs were successfully utilized for optical temperature sensing in the range of 25–95 °C. The mechanism of temperature sensing was discussed.
Timur Sh. Atabaev; Saya Sayatova; Anara Molkenova; Izumi Taniguchi. Nitrogen-doped carbon nanoparticles for potential temperature sensing applications. Sensing and Bio-Sensing Research 2018, 22, 100253 .
AMA StyleTimur Sh. Atabaev, Saya Sayatova, Anara Molkenova, Izumi Taniguchi. Nitrogen-doped carbon nanoparticles for potential temperature sensing applications. Sensing and Bio-Sensing Research. 2018; 22 ():100253.
Chicago/Turabian StyleTimur Sh. Atabaev; Saya Sayatova; Anara Molkenova; Izumi Taniguchi. 2018. "Nitrogen-doped carbon nanoparticles for potential temperature sensing applications." Sensing and Bio-Sensing Research 22, no. : 100253.
Aqueous rechargeable Li-ion batteries have evolved as a sphere of concentrated investigation due to their properties and economic benefits. Among all existing systems of aqueous batteries, Zn||LiFePO4 hybrid cells have gained much attention, but are hindered by dendrite growth. 3-dimensional structure could be a promising solution to address the above-mentioned problem. In the given study we report a successful development of 3D-structured anode with a gel-like composite polymer separator.
N. Akhmetova; G. Orazbekova; E.Kenzhegaliyeva; A. Mentbayeva; A. Molkenova; Z. Bakenov. Development of a novel gel-like composite polymer separator for 3D Zn/LiFePO4 aqueous hybrid ion battery. Materials Today: Proceedings 2018, 5, 22871 -22876.
AMA StyleN. Akhmetova, G. Orazbekova, E.Kenzhegaliyeva, A. Mentbayeva, A. Molkenova, Z. Bakenov. Development of a novel gel-like composite polymer separator for 3D Zn/LiFePO4 aqueous hybrid ion battery. Materials Today: Proceedings. 2018; 5 (11):22871-22876.
Chicago/Turabian StyleN. Akhmetova; G. Orazbekova; E.Kenzhegaliyeva; A. Mentbayeva; A. Molkenova; Z. Bakenov. 2018. "Development of a novel gel-like composite polymer separator for 3D Zn/LiFePO4 aqueous hybrid ion battery." Materials Today: Proceedings 5, no. 11: 22871-22876.
In recent years, functional nanoprobes with multiple imaging modalities have become an emerging field of biomedical research. In this preliminary study, we utilized a facile hydrothermal method for the preparation of magneto-fluorescent bimodal carbon dots doped with dysprosium (Dy-CDs). The prepared Dy-CDs have shown a good colloidal stability in a water solution and strong blue–green fluorescence, with a maximum at 452 nm. In addition, the excellent transverse relaxivity of the prepared Dy-CDs (r2 = 7.42 ± 0.07 mM−1s−1) makes them also suitable for T2-weighted magnetic resonance imaging (MRI). Thus, synthesized Dy-CDs could be potentially utilized for both MRI and fluorescence imaging of living cells.
Timur Sh. Atabaev; Zhonglie Piao; Anara Molkenova. Carbon Dots Doped with Dysprosium: A Bimodal Nanoprobe for MRI and Fluorescence Imaging. Journal of Functional Biomaterials 2018, 9, 35 .
AMA StyleTimur Sh. Atabaev, Zhonglie Piao, Anara Molkenova. Carbon Dots Doped with Dysprosium: A Bimodal Nanoprobe for MRI and Fluorescence Imaging. Journal of Functional Biomaterials. 2018; 9 (2):35.
Chicago/Turabian StyleTimur Sh. Atabaev; Zhonglie Piao; Anara Molkenova. 2018. "Carbon Dots Doped with Dysprosium: A Bimodal Nanoprobe for MRI and Fluorescence Imaging." Journal of Functional Biomaterials 9, no. 2: 35.
A one‐step template‐based technique for the fabrication of three dimensionally ordered macroporous carbon (3DOMC) was developed. 3DOMC, prepared using silica crystal as a template and soluble resol as a carbon source, possesses ordered macropores with mesoporous walls. ZnO nanoparticles were deposited on as‐prepared 3DOMC via a simple in situ growth process to form a ZnO/3DOMC anode material for lithium‐ion batteries. In the composite, the ZnO nanoparticles (≈3.9 nm) were well‐dispersed on the walls of 3DOMC. The ZnO/3DOMC anode exhibited an enhanced performance in a lithium battery delivering a specific capacity of 673 mAh g−1 at a current density of 0.1 C (0.1 C=97.8 mA g−1) after 300 cycles. This superior performance was ascribed to the ordered interconnected macropores of 3DOMC which could provide rapid diffusion paths for lithium‐ion diffusion and the electrolyte penetration, and buffer the volume changes of the ZnO nanoparticles upon cycling. Furthermore, the mesoporous structure of the 3DOMC walls could enhance the wettability of the ZnO‐based electrode, further improving its electrochemical performance.
Chengwei Zhang; Zheng Zhang; Fuxing Yin; Yongguang Zhang; Almagul Mentbayeva; Moulay-Rachid Babaa; Anara Molkenova; Zhumabay Bakenov. 3D Ordered Macroporous Carbon Encapsulated ZnO Nanoparticles as a High-Performance Anode for Lithium-Ion Batteries. ChemElectroChem 2017, 4, 2359 -2365.
AMA StyleChengwei Zhang, Zheng Zhang, Fuxing Yin, Yongguang Zhang, Almagul Mentbayeva, Moulay-Rachid Babaa, Anara Molkenova, Zhumabay Bakenov. 3D Ordered Macroporous Carbon Encapsulated ZnO Nanoparticles as a High-Performance Anode for Lithium-Ion Batteries. ChemElectroChem. 2017; 4 (9):2359-2365.
Chicago/Turabian StyleChengwei Zhang; Zheng Zhang; Fuxing Yin; Yongguang Zhang; Almagul Mentbayeva; Moulay-Rachid Babaa; Anara Molkenova; Zhumabay Bakenov. 2017. "3D Ordered Macroporous Carbon Encapsulated ZnO Nanoparticles as a High-Performance Anode for Lithium-Ion Batteries." ChemElectroChem 4, no. 9: 2359-2365.
Farabi Bozheyev; Anar Zhexembekova; Shynggys Zhumagali; Anara Molkenova; Zhumabay Bakenov. MoS 2 nanopowder as anode material for lithium-ion batteries produced by self-propagating high-temperature synthesis. Materials Today: Proceedings 2017, 4, 4567 -4571.
AMA StyleFarabi Bozheyev, Anar Zhexembekova, Shynggys Zhumagali, Anara Molkenova, Zhumabay Bakenov. MoS 2 nanopowder as anode material for lithium-ion batteries produced by self-propagating high-temperature synthesis. Materials Today: Proceedings. 2017; 4 (3):4567-4571.
Chicago/Turabian StyleFarabi Bozheyev; Anar Zhexembekova; Shynggys Zhumagali; Anara Molkenova; Zhumabay Bakenov. 2017. "MoS 2 nanopowder as anode material for lithium-ion batteries produced by self-propagating high-temperature synthesis." Materials Today: Proceedings 4, no. 3: 4567-4571.