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Eze FN, Eze RC, Okpara KE, Adekoya AE, Kalu HN. Design and development of locust bean gum-endowed/Phyllanthus reticulatus anthocyanin- functionalized biogenic gold nanosystem for enhanced antioxidative and anticancer chemotherapy. Int J Biol Macromol 2024; 275:133687. [PMID: 38972650 DOI: 10.1016/j.ijbiomac.2024.133687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 06/18/2024] [Accepted: 07/03/2024] [Indexed: 07/09/2024]
Abstract
Herein, the design and fabrication of an anticancer nanoplatform (LBG/PRA-NG) based on locust bean gum-stabilized nanogold and functionalized with Phyllanthus reticulatus anthocyanins was described. LBG/PRA-NG was prepared in an eco-friendly, one-pot approach at room temperature, mediated by the anthocyanins and gum as bio-reductant and stabilizer, respectively. The nanostructure was elaborately characterized by FESEM, TEM, UV-visible, DLS, Zeta potential, FTIR, XRD, TGA/DTG, and XPS analysis. Its anticancer attributes were examined based on cytotoxicity on MCF-7 and MDA-MB-231 breast cancer cell lines, as well as the generation of intracellular reactive oxygen species. The results revealed the successful formation of a homogenous and highly stable nanocomposite (LBG/PRA-NG), with quasi-spherical shape, small size (14.73 nm), Zeta potential and PDI values of -58.30 mV and 0.237, respectively. The presence of a plasmonic peak at 525 nm was indicative of AuNPs. Compared to the galactomannan and anthocyanin, LBG/PRA-NG exhibited superior antioxidative properties with IC50 values of 35.44 μg/mL against DPPH and 24.55 μg/mL against ABTS+. Notably, LBG/PRA-NG also demonstrated enhanced anticancer properties relative to LBG and anthocyanins, with IC50 values of 16.17 μg/mL and 25.06 μg/mL against MCF-7 and MDA-MB-231 cells. Meanwhile, the normal cells (HEK-293 and L929) resisted the innocuous effects of LBG/PRA-NG. Furthermore, treatment of breast cancer cells with LBG/PRA-NG drastically elevated the intracellular ROS levels. This suggested that the anticancer activity of LBG/PRA-NG may be mediated via amplification of ROS/oxidative stress-induced apoptosis. Altogether, these findings indicate the remarkable potential of LBG/PRA-NC in the development of anticancer therapy.
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Affiliation(s)
- Fredrick Nwude Eze
- College of Agricultural and Natural Sciences, Joseph Ayo Babalola University, Ikeji-Arakeji, Osun State, Nigeria.
| | - Roseline Chika Eze
- Faculty of Environment and Resource Studies, Mahidol University, Salaya District, Nakhon Pathom 73170, Thailand.
| | - Kingsley Ezechukwu Okpara
- Institute of Geosciences and Environmental Management, Rivers State University, P.M.B. 5080 Port Harcourt, Nigeria
| | - Ademola Ezekiel Adekoya
- Faculty of Pharmacy, Masaryk University, Palackého tř. 1946, 612 00 Brno-Královo Pole, Czechia.
| | - Helen Nwaocha Kalu
- College of Agricultural Economics, Rural Sociology and Extension, Michael Okpara University of Agriculture Umudike, P.M.B. 7267 Umuahia, Abia State, Nigeria
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Parmanbek N, Aimanova NA, Mashentseva AA, Barsbay M, Abuova FU, Nurpeisova DT, Jakupova ZY, Zdorovets MV. e-Beam and γ-rays Induced Synthesis and Catalytic Properties of Copper Nanoclusters-Deposited Composite Track-Etched Membranes. MEMBRANES 2023; 13:659. [PMID: 37505025 PMCID: PMC10385425 DOI: 10.3390/membranes13070659] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/25/2023] [Accepted: 07/05/2023] [Indexed: 07/29/2023]
Abstract
Effective removal of toxic inorganic and organic pollutants is one of the current leading challenges of wastewater treatment. In this study, the decomposition of methylene blue (MB) under UV light irradiation was investigated in the presence of copper nanoclusters (NCs)-deposited polyethylene terephthalate (PET) track-etched hybrid membranes. PET track-etched membranes (TeMs) with an average pore size of ~400 nm were grafted by functional acrylic acid (AA) monomer under electron beam irradiation after oxidation with H2O2/UV system. The radiation dose varied between 46 and 200 kGy. For the deposition of copper NCs, poly(acrylic acid) (PAA)-grafted membranes saturated with Cu(II) ions were irradiated either by electron beam or γ-rays to obtain copper-based NCs for the catalytic degradation of MB. Irradiation to 100 kGy with accelerated electrons resulted in the formation of small and uniform copper hydroxide (Cu(OH)2) nanoparticles homogeneously distributed over the entire volume of the template. On the other hand, irradiation under γ-rays yielded composites with copper NCs with a high degree of crystallinity. However, the size of the deposited NCs obtained by γ-irradiation was not uniform. Nanoparticles with the highest uniformity were obtained at 150 kGy dose. Detailed analysis by X-ray diffraction (XRD) and scanning electron microscopy (SEM) confirmed the loading of copper nanoparticles with an average size of 100 nm on the inner walls of nanochannels and on the surface of PET TeMs. Under UV light irradiation, composite membranes loaded with NCs exhibited high photocatalytic activity. It was determined that the highest catalytic activity was observed in the presence of Cu(OH)2@PET-g-PAA membrane obtained at 250 kGy. More than 91.9% of the initial dye was degraded when this hybrid membrane was employed for 180 min, while only 83.9% of MB was degraded under UV light using Cu@PET-g-PAA membrane. Cu(OH)2@PET-g-PAA membranes obtained under electron beam irradiation demonstrated a higher photocatalytic activity compared to Cu@PET-g-PAA membranes attained by γ-rays.
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Affiliation(s)
- Nursanat Parmanbek
- The Institute of Nuclear Physics of the Republic of Kazakhstan, Almaty 050032, Kazakhstan
- Department of Chemistry, L.N. Gumilyov Eurasian National University, Astana 010008, Kazakhstan
| | - Nurgulim A Aimanova
- The Institute of Nuclear Physics of the Republic of Kazakhstan, Almaty 050032, Kazakhstan
| | - Anastassiya A Mashentseva
- The Institute of Nuclear Physics of the Republic of Kazakhstan, Almaty 050032, Kazakhstan
- Department of Nuclear Physics, New Materials and Technologies, L.N. Gumilyov Eurasian National University, Astana 010008, Kazakhstan
| | - Murat Barsbay
- Department of Chemistry, Hacettepe University, Ankara 06800, Turkey
| | - Fatima U Abuova
- Department of Nuclear Physics, New Materials and Technologies, L.N. Gumilyov Eurasian National University, Astana 010008, Kazakhstan
| | - Dinara T Nurpeisova
- Department of Chemistry, L.N. Gumilyov Eurasian National University, Astana 010008, Kazakhstan
| | - Zhanar Ye Jakupova
- Department of Chemistry, L.N. Gumilyov Eurasian National University, Astana 010008, Kazakhstan
| | - Maxim V Zdorovets
- The Institute of Nuclear Physics of the Republic of Kazakhstan, Almaty 050032, Kazakhstan
- Department of Intelligent Information Technologies, The Ural Federal University, 620002 Yekaterinburg, Russia
- Engineering Profile Laboratory, L.N. Gumilyov Eurasian National University, Astana 010008, Kazakhstan
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Wang C, Song F, Wang XL, Wang YZ. A cellulose nanocrystal templating approach to synthesize size-controlled gold nanoparticles with high catalytic activity. Int J Biol Macromol 2022; 209:464-471. [PMID: 35413315 DOI: 10.1016/j.ijbiomac.2022.04.046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 03/01/2022] [Accepted: 04/06/2022] [Indexed: 11/17/2022]
Abstract
Advanced templating methods have shown precise regulation of the micro/nanostructures of inorganic catalysts. Here, on the basis of controlled self-assembly and micro-structures of cellulose nanocrystals (CNCs), a new bio-mass-mediated templating approach is proposed to control the growth of gold nanoparticles (Au NPs). The catalytic performance of the as-prepared Au NPs was evaluated using p-nitrophenol as a model pollutant. TEM, POM, zeta-potential, and rheological measurements were conducted to investigate the structure and catalytic activity of the nano-materials. By regulating the chiral nematic liquid crystal texture formed by the self-assembly of CNCs, the size of Au NPs could be adjusted at the nanoscale dimension, from 1.38 ± 0.38 nm to 4.25 ± 1.24 nm. Depending on the Au size, a high catalytic effect, namely, 98.0% conversion rate, was obtained within 30 min. The conversion rate was maintained at 97.0% even after 3-run cyclic application. Such findings demonstrate the potential of using CNCs as a bio-template to control the growth of nanomaterials.
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Affiliation(s)
- Chen Wang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, s, Sichuan University, Chengdu 610064, China
| | - Fei Song
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, s, Sichuan University, Chengdu 610064, China.
| | - Xiu-Li Wang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, s, Sichuan University, Chengdu 610064, China
| | - Yu-Zhong Wang
- The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, s, Sichuan University, Chengdu 610064, China.
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Zhang X, He Z, Liu Y, Du L. The underlying mechanism for the enhanced radical trapping effects of nanoparticles surface-functionalized with antioxidants: A kinetic study. NANOIMPACT 2021; 23:100328. [PMID: 35559829 DOI: 10.1016/j.impact.2021.100328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 05/23/2021] [Accepted: 05/27/2021] [Indexed: 06/15/2023]
Abstract
The enhancement in reactivity of the antioxidant functionalized gold nanoparticles is closely related to the rate constant and activation energy, which were significantly affected by the chain length of the PEG ligands that capped the gold nanoparticles. Meanwile, the enhancement could be attributed to the π-π stacking interaction between the adjacent phenol groups coated on gold nanoparticles' surface.
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Affiliation(s)
- Xiaojie Zhang
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Science, No.2, Zhongguancun North 1st St, Haidian District 100190, Beijing, China; Graduate School, University of Chinese Academy of Sciences, No 19 (A), Yuquan Road, Shijingshan District 100049, Beijing, China
| | - Zeng He
- Hospital of Chengdu Office of People's Government of Tibetan Autonomous Region, No. 20 Ximianqiao Street, 610041 Chengdu, Sichuan, China
| | - Yang Liu
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Science, No.2, Zhongguancun North 1st St, Haidian District 100190, Beijing, China
| | - Libo Du
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Science, No.2, Zhongguancun North 1st St, Haidian District 100190, Beijing, China; Graduate School, University of Chinese Academy of Sciences, No 19 (A), Yuquan Road, Shijingshan District 100049, Beijing, China.
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Affiliation(s)
- Falk Muench
- Department of Materials and Earth Sciences Technical University of Darmstadt Alarich-Weiss-Straße 2 64287 Darmstadt Germany
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Russakova AV, Altynbaeva LS, Barsbay M, Zheltov DA, Zdorovets MV, Mashentseva AA. Kinetic and Isotherm Study of As(III) Removal from Aqueous Solution by PET Track-Etched Membranes Loaded with Copper Microtubes. MEMBRANES 2021; 11:116. [PMID: 33562130 PMCID: PMC7914724 DOI: 10.3390/membranes11020116] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/26/2021] [Accepted: 02/01/2021] [Indexed: 12/15/2022]
Abstract
This paper reports on the synthesis and structure elucidation of track-etched membranes (TeMs) with electrolessly deposited copper microtubes (prepared in etched-only and oxidized polyethylene terephthalate (PET) TeMs), as well as on the comparative testing of arsenic (III) ion removal capacities through bath adsorption experiments. The structure and composition of composites were investigated by X-ray diffraction technique and scanning electron and atomic force microscopies. It was determined that adsorption followed pseudo-second-order kinetics, and the adsorption rate constants were calculated. A comparative study of the applicability of the adsorption models of Langmuir, Freundlich, and Dubinin-Radushkevich was carried out in order to describe the experimental isotherms of the prepared composite TeMs. The constants and parameters of all of the above equations were determined. By comparing the regression coefficients R2, it was shown that the Freundlich model describes the experimental data on the adsorption of arsenic through the studied samples better than others. Free energy of As(III) adsorption on the samples was determined using the Dubinin-Radushkevich isotherm model and was found to be 17.2 and 31.6 kJ/mol for Cu/PET and Cu/Ox_PET samples, respectively. The high EDr value observed for the Cu/Ox_PET composite indicates that the interaction between the adsorbate and the composite is based on chemisorption.
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Affiliation(s)
- Alyona V. Russakova
- The School of Information Technologies and Intelligent Systems, D.Serikbayev East Kazakhstan State Technical University, 070004 Ust-Kamenogorsk, Kazakhstan;
| | - Liliya Sh. Altynbaeva
- The Institute of Nuclear Physics of the Republic of Kazakhstan, 050032 Almaty, Kazakhstan; (L.S.A.); (D.A.Z.); (M.V.Z.)
- Department of Chemistry, L.N. Gumilyov Eurasian National University, 010008 Nur-Sultan, Kazakhstan
| | - Murat Barsbay
- Department of Chemistry, Hacettepe University, 06800 Ankara, Turkey;
| | - Dmitriy A. Zheltov
- The Institute of Nuclear Physics of the Republic of Kazakhstan, 050032 Almaty, Kazakhstan; (L.S.A.); (D.A.Z.); (M.V.Z.)
| | - Maxim V. Zdorovets
- The Institute of Nuclear Physics of the Republic of Kazakhstan, 050032 Almaty, Kazakhstan; (L.S.A.); (D.A.Z.); (M.V.Z.)
- Department of Intelligent Information Technologies, The Ural Federal University, 620002 Yekaterinburg, Russia
- Engineering Profile Laboratory, L.N. Gumilyov Eurasian National University, 010008 Nur-Sultan, Kazakhstan
| | - Anastassiya A. Mashentseva
- The Institute of Nuclear Physics of the Republic of Kazakhstan, 050032 Almaty, Kazakhstan; (L.S.A.); (D.A.Z.); (M.V.Z.)
- Department of Chemistry, L.N. Gumilyov Eurasian National University, 010008 Nur-Sultan, Kazakhstan
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7
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Synthesis, radical scavenging, and antimicrobial activities of core–shell Au/Ni microtubes. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-020-01066-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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8
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Yeszhanov AB, Korolkov IV, Gorin YG, Dosmagambetova SS, Zdorovets MV. Membrane distillation of pesticide solutions using hydrophobic track-etched membranes. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-020-01173-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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9
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Facile Method for Obtaining Gold-Coated Polyester Surfaces with Antimicrobial Properties. ADVANCES IN POLYMER TECHNOLOGY 2020. [DOI: 10.1155/2020/4504062] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The antimicrobial and antifungal activity of polymers used in medical devices has been extensively studied due to the growing impact of hospital-related infections in patients. The ideal biocidal polymeric materials should be very effective in the microorganism’s inhibition, not toxic to the human body, and environmentally friendly. In this context, this work is aimed at obtaining antimicrobial and antifungal properties at the polyester film surfaces without introducing toxic effects. Poly (ethylene terephthalate) (PET) films were functionalized with Ar plasma and then immersed in a solution containing gold nanoparticles (AuNps). The results demonstrated the appearance of the hydrophilic groups on the film surface after modification of PET film by plasma Ar treatment and the formation of the polar groups such as C=O, COO-, and OH, which then reacted with AuNps. The changes induced in the treated polymer samples were investigated in terms of AuNp adsorption efficiency on polyester film by contact angle, profilometry, Scanning Electron Microscopy (SEM), Attenuated Total Reflectance Spectroscopy-Fourier Transform Infrared (ATR-FTIR), and X-ray Photoelectron Spectroscopy (XPS) measurements. The morphological and structural analyses have shown a good adhesion of AuNps at treated film surfaces. The results of biocompatibility antimicrobial and antifungal tests proved the nontoxic behavior of the sample and its good antimicrobial and antifungal activity.
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Muench F, El-Nagar GA, Tichter T, Zintler A, Kunz U, Molina-Luna L, Sikolenko V, Pasquini C, Lauermann I, Roth C. Conformal Solution Deposition of Pt-Pd Titania Nanocomposite Coatings for Light-Assisted Formic Acid Electro-Oxidation. ACS APPLIED MATERIALS & INTERFACES 2019; 11:43081-43092. [PMID: 31647212 DOI: 10.1021/acsami.9b12783] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Many nanofabrication processes require sophisticated equipment, elevated temperature, vacuum or specific atmospheric conditions, templates, and exotic chemicals, which severely hamper their implementation in real-world applications. In this study, we outline a fully wet-chemical procedure for equipping a 3D carbon felt (CF) substrate with a multifunctional, titania nanospike-supported Pt-Pd nanoparticle (Pt-Pd-TiO2@CF) layer in a facile and scalable manner. The nanostructure, composition, chemical speciation, and formation of the material was meticulously investigated, evidencing the conformal coating of the substrate with a roughened layer of nanocrystalline rutile spikes by chemical bath deposition from Ti3+ solutions. The spikes are densely covered by bimetallic nanoparticles of 4.4 ± 1.1 nm in size, which were produced by autocatalytic Pt deposition onto Pd seeds introduced by Sn2+ ionic layer adsorption and reaction. The as-synthesized nanocomposite was applied to the (photo)electro-oxidation of formic acid (FA), exhibiting a superior performance compared to Pt-plated, Pd-seeded CF (Pt-Pd@CF) and commercial Pt-C, indicating the promoting electrocatalytic role of the TiO2 support. Upon UV-Vis illumination, the performance of the Pt-Pd-TiO2@CF electrode is remarkably increased (22-fold), generating a current density of 110 mA cm-2, distinctly outperforming titania-free Pt-Pd@CF (5 mA cm-2) and commercial Pt-C (6 mA cm-2) reference catalysts. In addition, the Pt-Pd-TiO2@CF showed a much better stability, characterized by a very high poisoning tolerance for in situ-generated CO intermediates, whose formation is hindered in the presence of TiO2. This overall performance boost is attributed to a dual enhancement mechanism (∼30% electrocatalytic and ∼70% photoelectrocatalytic). The photogenerated electrons from the TiO2 conduction band enrich the electron density of the Pt nanoparticles, promoting the generation of active oxygen species on their surfaces from adsorbed oxygen and water molecules, which facilitate the direct FA electro-oxidation into CO2.
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Affiliation(s)
- Falk Muench
- Department of Materials and Earth Sciences , Technische Universität Darmstadt , Alarich-Weiss-Straße 2 , 64287 Darmstadt , Germany
| | - Gumaa A El-Nagar
- Chemistry Department, Faculty of Science , Cairo University , Cairo 12613 , Egypt
- Helmholtz-Zentrum Berlin für Materialien und Energie , Berlin 12489 , Germany
| | | | - Alexander Zintler
- Department of Materials and Earth Sciences , Technische Universität Darmstadt , Alarich-Weiss-Straße 2 , 64287 Darmstadt , Germany
| | - Ulrike Kunz
- Department of Materials and Earth Sciences , Technische Universität Darmstadt , Alarich-Weiss-Straße 2 , 64287 Darmstadt , Germany
| | - Leopoldo Molina-Luna
- Department of Materials and Earth Sciences , Technische Universität Darmstadt , Alarich-Weiss-Straße 2 , 64287 Darmstadt , Germany
| | | | | | - Iver Lauermann
- Helmholtz-Zentrum Berlin für Materialien und Energie , Berlin 12489 , Germany
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Korolkov IV, Yeszhanov AB, Zdorovets MV, Gorin YG, Güven O, Dosmagambetova SS, Khlebnikov NA, Serkov KV, Krasnopyorova MV, Milts OS, Zheltov DA. Modification of PET ion track membranes for membrane distillation of low-level liquid radioactive wastes and salt solutions. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.115694] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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12
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Bundyukova V, Yakimchuk D, Shumskaya E, Smirnov A, Yarmolich M, Kaniukov E. Post-processing of SiO2/Si ion-track template images for pores parameters analysis. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.matpr.2018.12.081] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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13
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Muench F, Popovitz-Biro R, Bendikov T, Feldman Y, Hecker B, Oezaslan M, Rubinstein I, Vaskevich A. Nucleation-Controlled Solution Deposition of Silver Nanoplate Architectures for Facile Derivatization and Catalytic Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1805179. [PMID: 30345718 DOI: 10.1002/adma.201805179] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 09/13/2018] [Indexed: 06/08/2023]
Abstract
Due to their distinctive electronic, optical, and chemical properties, metal nanoplates represent important building blocks for creating functional superstructures. Here, a general deposition method for synthesizing Ag nanoplate architectures, which is compatible with a wide substrate range (flexible, curved, or recessed; consisting of carbon, silicon, metals, oxides, or polymers) is reported. By adjusting the reaction conditions, nucleation can be triggered in the bulk solution, on seeds and by electrodeposition, allowing the production of nanoplate suspensions as well as direct surface modification with open-porous nanoplate films. The latter are fully percolated, possess a large, easily accessible surface, a defined nanostructure with {111} basal planes, and expose defect-rich, particularly reactive edges in high density, making them compelling platforms for heterogeneous catalysis, and electro- and flow chemistry. This potential is showcased by exploring the catalytic performance of the nanoplates in the reduction of carbon dioxide, 4-nitrophenol, and hydrogen peroxide, devising two types of microreactors, and by tuning the nanoplate functionality with derivatization reactions.
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Affiliation(s)
- Falk Muench
- Department of Materials and Earth Sciences, Technische Universität Darmstadt, 64287, Darmstadt, Germany
- Department of Materials and Interfaces, Weizmann Institute of Science, 7610001, Rehovot, Israel
| | - Ronit Popovitz-Biro
- Chemical Research Support, Weizmann Institute of Science, 7610001, Rehovot, Israel
| | - Tatyana Bendikov
- Chemical Research Support, Weizmann Institute of Science, 7610001, Rehovot, Israel
| | - Yishay Feldman
- Chemical Research Support, Weizmann Institute of Science, 7610001, Rehovot, Israel
| | - Burkhard Hecker
- Department of Chemistry, Carl von Ossietzky University of Oldenburg, 26129, Oldenburg, Germany
| | - Mehtap Oezaslan
- Department of Chemistry, Carl von Ossietzky University of Oldenburg, 26129, Oldenburg, Germany
| | - Israel Rubinstein
- Department of Materials and Interfaces, Weizmann Institute of Science, 7610001, Rehovot, Israel
| | - Alexander Vaskevich
- Department of Materials and Interfaces, Weizmann Institute of Science, 7610001, Rehovot, Israel
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14
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Abstract
Combining 1D metal nanotubes and nanowires into cross-linked 2D and 3D architectures represents an attractive design strategy for creating tailored unsupported catalysts. Such materials complement the functionality and high surface area of the nanoscale building blocks with the stability, continuous conduction pathways, efficient mass transfer, and convenient handling of a free-standing, interconnected, open-porous superstructure. This review summarizes synthetic approaches toward metal nano-networks of varying dimensionality, including the assembly of colloidal 1D nanostructures, the buildup of nanofibrous networks by electrospinning, and direct, template-assisted deposition methods. It is outlined how the nanostructure, porosity, network architecture, and composition of such materials can be tuned by the fabrication conditions and additional processing steps. Finally, it is shown how these synthetic tools can be employed for designing and optimizing self-supported metal nano-networks for application in electrocatalysis and related fields.
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16
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Kutuzau MD, Kaniukov EY, Shumskaya EE, Bundyukova VD, Kalkabay GR, Zdorovets MV, Borgekov DB, Kozlovskiy AL. The behavior of Ni nanotubes under the influence of environments with different acidities. CrystEngComm 2018. [DOI: 10.1039/c8ce00362a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The results of research on the behavior of Ni nanotubes under the influence of environments with different pH values are presented.
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Affiliation(s)
- Maksim D. Kutuzau
- Scientific and Practical Materials Research Centre of the National Academy of Sciences of Belarus
- Minsk
- 220072 Belarus
| | - Egor Yu. Kaniukov
- Scientific and Practical Materials Research Centre of the National Academy of Sciences of Belarus
- Minsk
- 220072 Belarus
| | - Elena E. Shumskaya
- Scientific and Practical Materials Research Centre of the National Academy of Sciences of Belarus
- Minsk
- 220072 Belarus
| | - Victoria D. Bundyukova
- Scientific and Practical Materials Research Centre of the National Academy of Sciences of Belarus
- Minsk
- 220072 Belarus
| | | | - Maxim V. Zdorovets
- Ural Federal University named after the first President of Russia B. N. Yeltsin
- Ekaterinburg
- Russian Federation
- L. N. Gumilyov Eurasian National University
- Astana
| | - Daryn B. Borgekov
- L. N. Gumilyov Eurasian National University
- Astana
- Kazakhstan
- Laboratory of Solid State Physics
- Institute of Nuclear Physics Astana
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17
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Kozlovskiy AL, Shlimas DI, Zdorovets MV, Mashentseva AA, Kadyrzhanov KK. Thermal annealing-induced modification of the structure and electrical conductivity of metallic nanotubes embedded in PET track-etched membranes. CHEMICAL PAPERS 2017. [DOI: 10.1007/s11696-017-0268-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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