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Khalameida S, Samsonenko M, Khyzhun O, Sydorchuk V, Starchevskyy V, Charmas B, Skwarek E. Sono- and mechanochemical doping of tin dioxide with silver and its physicochemical characteristics and photocatalytic properties. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04865-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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2
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Maruthupandy M, Muneeswaran T, Chackaravarthi G, Vennila T, Anand M, Cho WS, Quero F. Synthesis of chitosan/SnO2 nanocomposites by chemical precipitation for enhanced visible light photocatalytic degradation efficiency of congo red and rhodamine-B dye molecules. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.113972] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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3
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Mourdikoudis S, Menelaou M, Fiuza-Maneiro N, Zheng G, Wei S, Pérez-Juste J, Polavarapu L, Sofer Z. Oleic acid/oleylamine ligand pair: a versatile combination in the synthesis of colloidal nanoparticles. NANOSCALE HORIZONS 2022; 7:941-1015. [PMID: 35770698 DOI: 10.1039/d2nh00111j] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A variety of colloidal chemical approaches has been developed in the last few decades for the controlled synthesis of nanostructured materials in either water or organic solvents. Besides the precursors, the solvents, reducing agents, and the choice of surfactants are crucial for tuning the composition, morphology and other properties of the resulting nanoparticles. The ligands employed include thiols, amines, carboxylic acids, phosphines and phosphine oxides. Generally, adding a single ligand to the reaction mixture is not always adequate to yield the desired features. In this review, we discuss in detail the role of the oleic acid/oleylamine ligand pair in the chemical synthesis of nanoparticles. The combined use of these ligands belonging to two different categories of molecules aims to control the size and shape of nanoparticles and prevent their aggregation, not only during their synthesis but also after their dispersion in a carrier solvent. We show how the different binding strengths of these two molecules and their distinct binding modes on specific facets affect the reaction kinetics toward the production of nanostructures with tailored characteristics. Additional functions, such as the reducing function, are also noted, especially for oleylamine. Sometimes, the carboxylic acid will react with the alkylamine to form an acid-base complex, which may serve as a binary capping agent and reductant; however, its reducing capacity may range from lower to much lower than that of oleylamine. The types of nanoparticles synthesized in the simultaneous presence of oleic acid and oleylamine and discussed herein include metal oxides, metal chalcogenides, metals, bimetallic structures, perovskites, upconversion particles and rare earth-based materials. Diverse morphologies, ranging from spherical nanoparticles to anisotropic, core-shell and hetero-structured configurations are presented. Finally, the relation between tuning the resulting surface and volume nanoparticle properties and the relevant applications is highlighted.
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Affiliation(s)
- Stefanos Mourdikoudis
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technicka 5, 16628 - Prague 6, Czech Republic.
| | - Melita Menelaou
- Department of Chemical Engineering, Faculty of Geotechnical Sciences and Environmental Management, Cyprus University of Technology, 3036 Limassol, Cyprus.
| | - Nadesh Fiuza-Maneiro
- CINBIO, Universidade de Vigo, Materials Chemistry and Physics, Department of Physical Chemistry, Campus Universitario Lagoas Marcosende, 36310 Vigo, Spain.
| | - Guangchao Zheng
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou, 450001, China
| | - Shuangying Wei
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technicka 5, 16628 - Prague 6, Czech Republic.
| | - Jorge Pérez-Juste
- CINBIO, Universidade de Vigo, Departamento de Química Física, Campus Universitario As Lagoas, Marcosende, 36310 Vigo, Spain
- Galicia Sur Health Research Institute (IIS Galicia Sur), 36310 Vigo, Spain
| | - Lakshminarayana Polavarapu
- CINBIO, Universidade de Vigo, Materials Chemistry and Physics, Department of Physical Chemistry, Campus Universitario Lagoas Marcosende, 36310 Vigo, Spain.
| | - Zdeněk Sofer
- Department of Inorganic Chemistry, University of Chemistry and Technology Prague, Technicka 5, 16628 - Prague 6, Czech Republic.
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Kim HM, Choi SH, Jeong HJ, Lee JH, Kim J, Park JS. Highly Dense and Stable p-Type Thin-Film Transistor Based on Atomic Layer Deposition SnO Fabricated by Two-Step Crystallization. ACS APPLIED MATERIALS & INTERFACES 2021; 13:30818-30825. [PMID: 34156823 DOI: 10.1021/acsami.1c06038] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Over the past several decades, tin monoxide (SnO) has been studied extensively as a p-type thin film transistor (TFT). However, its TFT performance is still insufficient for practical use. Many studies suggested that the instability of the valence state of Sn (Sn2+/Sn4+) is a critical reason for the poor performance such as limited mobility and low on/off ratio. For SnO, the Sn 5s-O 2p hybridized state is a key component for obtaining p-type conduction. Thus, a strategy for stabilizing the SnO phase is essential. In this study, we employ a variety of analytical methods such as X-ray photoelectron spectroscopy (XPS), ultraviolet photoelectron spectroscopy (UPS), and Hall measurement to identify the main contributors to the physical properties of SnO. It is revealed that precision control of the process temperature is needed to achieve both the crystallinity and thermal stability of SnO. In other words, it would be ideal to obtain high-quality SnO thin films at low temperature. We find that atomic layer deposition (ALD) is a quite advantageous process for obtaining high-quality SnO thin films by the following two-step process: (i) growth of highly c-axis oriented SnO at the initial stage and (ii) further crystallization along the in-plane direction by a postannealing process. Consequently, we obtained a highly dense SnO thin film (film density: 6.4 g/cm3) with a high Hall mobility of ∼5 cm2/(V·s). The fabricated SnO TFTs exhibit a field-effect mobility of ∼6.0 cm2/(V·s), which is a quite high value among the SnO TFTs reported to date, with long-term stability. We believe that this study demonstrates the validity of the ALD process for SnO TFTs.
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Affiliation(s)
- Hye-Mi Kim
- Division of Materials Science and Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Su-Hwan Choi
- Division of Nano-Scale Semiconductor Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Hyun Jun Jeong
- Division of Materials Science and Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Jung-Hoon Lee
- Division of Materials Science and Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Junghwan Kim
- Materials Research Center for Element Strategy, Tokyo Institute of Technology, Nagatsuta 4259, Yohohama 226-8503, Japan
| | - Jin-Seong Park
- Division of Materials Science and Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
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Singh B, Singh K, Kumar M, Thakur S, Kumar A. Insights of preferred growth, elemental and morphological properties of BN/SnO2 composite for photocatalytic applications towards organic pollutants. Chem Phys 2020. [DOI: 10.1016/j.chemphys.2019.110659] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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7
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Tang J, Daiyan R, Ghasemian MB, Idrus-Saidi SA, Zavabeti A, Daeneke T, Yang J, Koshy P, Cheong S, Tilley RD, Kaner RB, Amal R, Kalantar-Zadeh K. Advantages of eutectic alloys for creating catalysts in the realm of nanotechnology-enabled metallurgy. Nat Commun 2019; 10:4645. [PMID: 31604939 PMCID: PMC6789138 DOI: 10.1038/s41467-019-12615-6] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 09/20/2019] [Indexed: 12/20/2022] Open
Abstract
The nascent field of nanotechnology-enabled metallurgy has great potential. However, the role of eutectic alloys and the nature of alloy solidification in this field are still largely unknown. To demonstrate one of the promises of liquid metals in the field, we explore a model system of catalytically active Bi-Sn nano-alloys produced using a liquid-phase ultrasonication technique and investigate their phase separation, surface oxidation, and nucleation. The Bi-Sn ratio determines the grain boundary properties and the emergence of dislocations within the nano-alloys. The eutectic system gives rise to the smallest grain dimensions among all Bi-Sn ratios along with more pronounced dislocation formation within the nano-alloys. Using electrochemical CO2 reduction and photocatalysis, we demonstrate that the structural peculiarity of the eutectic nano-alloys offers the highest catalytic activity in comparison with their non-eutectic counterparts. The fundamentals of nano-alloy formation revealed here may establish the groundwork for creating bimetallic and multimetallic nano-alloys.
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Affiliation(s)
- Jianbo Tang
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Rahman Daiyan
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Mohammad B Ghasemian
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Shuhada A Idrus-Saidi
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Ali Zavabeti
- School of Engineering, RMIT University, Melbourne, VIC, 3001, Australia
- College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, 29 Jiangjun Ave, 211100, Nanjing, China
| | - Torben Daeneke
- School of Engineering, RMIT University, Melbourne, VIC, 3001, Australia
| | - Jiong Yang
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Pramod Koshy
- School of Materials Science and Engineering, UNSW, Sydney, NSW, 2052, Australia
| | - Soshan Cheong
- Mark Wainwright Analytical Centre, UNSW, Sydney, NSW, 2052, Australia
| | - Richard D Tilley
- Mark Wainwright Analytical Centre, UNSW, Sydney, NSW, 2052, Australia
- School of Chemistry, UNSW, Sydney, NSW, 2052, Australia
- Australian Centre for NanoMedicine, UNSW, Sydney, NSW, 2052, Australia
| | - Richard B Kaner
- Department of Chemistry and Biochemistry, University of California, Los Angeles (UCLA), Los Angeles, CA, 90095, USA
- Department of Materials Science and Engineering, UCLA, Los Angeles, CA, 90095, USA
| | - Rose Amal
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Kourosh Kalantar-Zadeh
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia.
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Zhenya Zhang, Chen Y, Wen X. Synthesis, Photoluminescence and Photocatalytic Activity of Tetragonal SnO2 Prepared by Hydrothermal Sol-Gel Method. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2019. [DOI: 10.1134/s0036024419020353] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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9
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Lee JH, Yoo M, Kang D, Lee HM, Choi WH, Park JW, Yi Y, Kim HY, Park JS. Selective SnO x Atomic Layer Deposition Driven by Oxygen Reactants. ACS APPLIED MATERIALS & INTERFACES 2018; 10:33335-33342. [PMID: 30199618 DOI: 10.1021/acsami.8b12251] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
SnO x thin films were successfully deposited by the thermal atomic layer deposition (ALD) method using N, N'- tert-butyl-1,1-dimethylethylenediamine stannylene(II) as a precursor and ozone and water as reactants. The growth of SnO and SnO2 films could be easily controlled by employing different reactants and utilizing different ozone and water concentrations, respectively. The formation of both SnO and SnO2 films exhibited typical surface-limiting reaction characteristics, although their growth behaviors differ from one another. The combined studies of density functional theory calculations and experimental analyses showed that the difference in growth behavior of the SnO and SnO2 films can be attributed to the stability of ozone and water on the SnO2 and SnO films. SnO and SnO2 films have different crystal structures and both films were crystallized from the amorphous to polycrystalline states following an increase in the deposition temperature. The absorbance and refractive index of the thin films were investigated using ultraviolet-visible spectroscopy (UV-vis) and spectroscopic ellipsometry (SE), respectively. SnO x films formed using ozone and water as a reactant showed an optical band gap of 3.60-3.17 eV and 2.24-2.30 eV and refractive indices of ∼2.0 and ∼2.6, respectively, which correspond to values typical of SnO2 and SnO. The bilayer structure of SnO/SnO2 was successfully fabricated on indium tin oxide (ITO) glass with nickel as a top electrode at 100 °C. The SnO/SnO2 bilayer exhibited diode characteristics with a current rectification ratio of 15. Our results present a simple but highly versatile growth method for producing multilayer oxide films with electronic properties that can be finely controlled.
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Affiliation(s)
- Jung-Hoon Lee
- Division of Materials Science and Engineering , Hanyang University , Seoul , Korea
| | - Mi Yoo
- Department of Materials Science and Engineering , Chungnam National University , 99 Daehak-ro , Yuseong-gu, Daejeon , 34134 , Republic of Korea
| | - DongHee Kang
- Department of Physics and vdW Materials Research Center , Yonsei University , 03722 Seoul , Korea
| | - Hyun-Mo Lee
- Division of Materials Science and Engineering , Hanyang University , Seoul , Korea
| | - Wan-Ho Choi
- Division of Materials Science and Engineering , Hanyang University , Seoul , Korea
| | - Jung Woo Park
- Thin Film Material Team, Hansol Chemical, 873, Gwahak-ro , Yongam-ri, Bongdong-eup, Wanju_Gun, Jeollabuk-do , Republic of Korea
| | - Yeonjin Yi
- Department of Physics and vdW Materials Research Center , Yonsei University , 03722 Seoul , Korea
| | - Hyun You Kim
- Department of Materials Science and Engineering , Chungnam National University , 99 Daehak-ro , Yuseong-gu, Daejeon , 34134 , Republic of Korea
| | - Jin-Seong Park
- Division of Materials Science and Engineering , Hanyang University , Seoul , Korea
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Khan SR, Khalid MU, Jamil S, Li S, Mujahid A, Janjua MRSA. Photocatalytic degradation of reactive black 5 on the surface of tin oxide microrods. JOURNAL OF WATER AND HEALTH 2018; 16:773-781. [PMID: 30285958 DOI: 10.2166/wh.2018.033] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A simple co-precipitation technique is proposed for synthesis of tin oxide (SnO2) microrods. Stannous chloride and urea were used during synthesis. X-ray powder diffraction (XRD) analysis revealed that the annealed product consists of SnO2 microrods having tetragonal unit cells, while scanning electron microscopy (SEM) analysis revealed the rod-like morphology of a synthesized product. These synthesized microrods are used as photocatalyst for the degradation of reactive black 5 (RB5). Degradation kinetics of RB5 are monitored under daylight in different concentrations of hydrogen peroxide (H2O2) and catalyst. The percentage of RB5 conversion is also calculated at various concentrations of hydrogen peroxide and catalyst which demonstrate that RB5 shows high catalytic degradation at high concentrations of hydrogen peroxide and catalyst.
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Affiliation(s)
- Shanza Rauf Khan
- Department of Chemistry, University of Agriculture, Faisalabad 38000, Pakistan E-mail:
| | - Muhammad Umar Khalid
- Department of Chemistry, University of Agriculture, Faisalabad 38000, Pakistan E-mail:
| | - Saba Jamil
- Department of Chemistry, University of Agriculture, Faisalabad 38000, Pakistan E-mail:
| | - Songnan Li
- Harbin Normal University (Songbei), Harbin 150025, China
| | - Aiman Mujahid
- Department of Chemistry, University of Agriculture, Faisalabad 38000, Pakistan E-mail:
| | - Muhammad Ramzan Saeed Ashraf Janjua
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia and Department of Chemistry, University of Sargodha, Sargodha 40100, Pakistan
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11
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Li YY, Wang JG, Sun HH, Wei B. Heterostructured TiO 2/NiTiO 3 Nanorod Arrays for Inorganic Sensitized Solar Cells with Significantly Enhanced Photovoltaic Performance and Stability. ACS APPLIED MATERIALS & INTERFACES 2018; 10:11580-11586. [PMID: 29557649 DOI: 10.1021/acsami.7b17044] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Organic dyes used in the conventional dye-sensitized solar cells (DSSCs) suffer from poor light stability and high cost. In this work, we demonstrate a new inorganic sensitized solar cell based on ordered one-dimensional semiconductor nanorod arrays of TiO2/NiTiO3 (NTO) heterostructures prepared via a facile two-step hydrothermal approach. The semiconductor heterostructure arrays are highly desirable and promising for DSSCs because of their direct charge transport capability and slow charge recombination rate. The low-cost NTO inorganic semiconductor possesses an appropriate band gap that matches well with TiO2, which behaves like a "dye" to enable efficient light harvesting and fast electron-hole separation. The solar cells constructed by the ordered TiO2/NTO heterostructure photoanodes show a significantly improved power conversion efficiency, high fill factor, and more promising, outstanding life stability. The present work will open up an avenue to design heterostructured inorganics for high-performance solar cells.
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Affiliation(s)
- Yue-Ying Li
- State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering , Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU) , Xi'an 710072 , China
| | - Jian-Gan Wang
- State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering , Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU) , Xi'an 710072 , China
| | - Huan-Huan Sun
- State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering , Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU) , Xi'an 710072 , China
| | - Bingqing Wei
- State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering , Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU) , Xi'an 710072 , China
- Department of Mechanical Engineering , University of Delaware , Newark , Delaware 19716 , United States
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12
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Specially designed B4C/SnO2 nanocomposite for photocatalysis: traditional ceramic with unique properties. APPLIED NANOSCIENCE 2018. [DOI: 10.1007/s13204-018-0662-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Abstract
Boron carbide: A traditional ceramic material shows unique properties when explored in nano-range. Specially designed boron-based nanocomposite has been synthesized by reflux method. The addition of SnO2 in base matrix increases the defect states in boron carbide and shows unique catalytic properties. The calculated texture coefficient and Nelson–Riley factor show that the synthesized nanocomposite has large number of defect states. Also this composite is explored for the first time for catalysis degradation of industrial used dyes. The degradation analysis of industrial pollutants such as Novacron red Huntsman (NRH) and methylene blue (MB) dye reveals that the composite is an efficient catalyst. Degradation study shows that 1 g/L catalyst concentration of B4C/SnO2 degrades NRH and MB dye up to approximately 97.38 and 79.41%, respectively, in 20 min under sunlight irradiation. This water-insoluble catalyst can be recovered and reused.
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13
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ZnO/γ-Fe 2 O 3 charge transfer interface in zinc-iron oxide hollow cages towards efficient photodegradation of industrial dyes and methanol electrooxidation. J Catal 2017. [DOI: 10.1016/j.jcat.2017.09.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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14
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Khalameida S, Samsonenko M, Skubiszewska-Zięba J, Zakutevskyy O. Dyes catalytic degradation using modified tin(IV) oxide and hydroxide powders. ADSORPT SCI TECHNOL 2017. [DOI: 10.1177/0263617417722251] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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15
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Khalameida SV, Samsonenko MN, Sydorchuk VV, Starchevskyy VL, Zakutevskyy OI, Khyzhun OY. Photocatalytic Properties of Tin Dioxide Doped with Chromium(III), Silver and Zinc Compounds in the Oxidation of Organic Substrates by the Action of Visible Light. THEOR EXP CHEM+ 2017. [DOI: 10.1007/s11237-017-9499-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Rui Y, Xiong H, Su B, Wang H, Zhang Q, Xu J, Müller-Buschbaum P. Liquid-liquid interface assisted synthesis of SnO 2 nanorods with tunable length for enhanced performance in dye-sensitized solar cells. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.01.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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Zhang G, Han X, Bian W, Zhan J, Ma X. Facile synthesis and high formaldehyde-sensing performance of NiO–SnO2 hybrid nanospheres. RSC Adv 2016. [DOI: 10.1039/c5ra21063a] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A formaldehyde gas sensor with high sensitivity and superior selectivity has been fabricated successfully with NiO–SnO2 hybrid nanospheres.
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Affiliation(s)
- Guochen Zhang
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- PR China
| | - Xue Han
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- PR China
| | - Weiwei Bian
- Medical Chemistry Staff Room
- Weifang Medical University
- Weifang 261053
- PR China
| | - Jinhua Zhan
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- PR China
| | - Xicheng Ma
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- PR China
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18
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Wang Y, Cheng G, Zhang Y, Ke H, Zhu C. Synthesis of fluorinated SnO2 3D hierarchical structures assembled from nanosheets and their enhanced photocatalytic activity. RSC Adv 2015. [DOI: 10.1039/c5ra15179a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Fluorinated 3D SnO2 hierarchical structures assembled from nanosheets were synthesized via a hydrothermal treatment and present excellent photocatalytic degradation of RhB.
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Affiliation(s)
- Youzhi Wang
- Faculty of Material & Chemistry
- China University of Geosciences
- Wuhan
- P.R. China
| | - Guoe Cheng
- Faculty of Material & Chemistry
- China University of Geosciences
- Wuhan
- P.R. China
| | - Yu Zhang
- Faculty of Material & Chemistry
- China University of Geosciences
- Wuhan
- P.R. China
| | - Hanzhong Ke
- Faculty of Material & Chemistry
- China University of Geosciences
- Wuhan
- P.R. China
| | - Chunling Zhu
- Faculty of Material & Chemistry
- China University of Geosciences
- Wuhan
- P.R. China
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Dhanabalan SC, Garcia JP, Calestani D, Pattini F, Bissoli F, Villani M, Rampino S, Zappettini A. Controllable vapor phase growth of vertically aligned ZnO nanorods on TCO/Glass substrates. CRYSTAL RESEARCH AND TECHNOLOGY 2014. [DOI: 10.1002/crat.201300422] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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20
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Wei Z, Li Y, Luo S, Liu C, Meng D, Ding M, Zeng G. Hierarchical heterostructure of CdS nanoparticles sensitized electrospun TiO2 nanofibers with enhanced photocatalytic activity. Sep Purif Technol 2014. [DOI: 10.1016/j.seppur.2013.11.009] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Sun L, Wu W, Yang S, Zhou J, Hong M, Xiao X, Ren F, Jiang C. Template and silica interlayer tailorable synthesis of spindle-like multilayer α-Fe2O3/Ag/SnO2 ternary hybrid architectures and their enhanced photocatalytic activity. ACS APPLIED MATERIALS & INTERFACES 2014; 6:1113-24. [PMID: 24369679 DOI: 10.1021/am404700h] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Our study reports a novel iron oxide/noble metal/semiconductor ternary multilayer hybrid structure that was synthesized through template synthesis and layer-by-layer deposition. Three different morphologies of α-Fe2O3/Ag/SiO2/SnO2 hybrid architectures were obtained with different thicknesses of the SiO2 interlayer which was introduced for tailoring and controlling the coupling of noble metal Ag nanoparticles (NPs) with the SnO2 semiconductor. The resulting samples were characterized in terms of morphology, composition, and optical property by various analytical techniques. The as-obtained α-Fe2O3/Ag/SiO2/SnO2 nanocomposites exhibit enhanced visible light or UV photocatalytic abilities, remarkably superior to commercial pure SnO2 products, bare α-Fe2O3 seeds, and α-Fe2O3/SnO2 nanocomposites. Moreover, the sample of α-Fe2O3/Ag/SiO2/SnO2 also exhibits good chemical stability and recyclability because it has higher photocatalytic activity even after eight cycles. The origin of enhanced photocatalytic activity on the multilayer core-shell α-Fe2O3/Ag/SiO2/SnO2 nanocomposites was primarily ascribed to the coupling between noble metal Ag and the two semiconductors Fe2O3 and SnO2, which are proven to be applied in recyclable photocatalysis.
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Affiliation(s)
- Lingling Sun
- Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, School of Physics and Technology, Wuhan University , Wuhan, Hubei 430072, P. R. China
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Li Y, Luo S, Wei Z, Meng D, Ding M, Liu C. Electrodeposition technique-dependent photoelectrochemical and photocatalytic properties of an In2S3/TiO2 nanotube array. Phys Chem Chem Phys 2014; 16:4361-8. [DOI: 10.1039/c3cp54675f] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Hao T, Cheng G, Ke H, Zhu Y, Fu Y. Effects of fluorine ions on the formation and photocatalytic activities of SnO2 nanoparticles with small sizes. RSC Adv 2014. [DOI: 10.1039/c4ra02802c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
SnO2 nanoparticles with small sizes were synthesized by a simple hydrothermal route with different dosages of fluorine ions.
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Affiliation(s)
- Tingting Hao
- Faculty of Material & Chemistry
- China University of Geosciences
- Wuhan, PR China
| | - Guoe Cheng
- Faculty of Material & Chemistry
- China University of Geosciences
- Wuhan, PR China
| | - Hanzhong Ke
- Faculty of Material & Chemistry
- China University of Geosciences
- Wuhan, PR China
| | - Yujie Zhu
- Faculty of Material & Chemistry
- China University of Geosciences
- Wuhan, PR China
| | - Yangming Fu
- Faculty of Material & Chemistry
- China University of Geosciences
- Wuhan, PR China
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24
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Jiang H, Xing J, Wang C, Yang H. Deposition of SnO2on the Anatase TiO2{105} Facets with High Photocatalytic Performance. CHINESE J CHEM 2013. [DOI: 10.1002/cjoc.201300709] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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25
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Wu W, Liao L, Zhang S, Zhou J, Xiao X, Ren F, Sun L, Dai Z, Jiang C. Non-centrosymmetric Au-SnO2 hybrid nanostructures with strong localization of plasmonic for enhanced photocatalysis application. NANOSCALE 2013; 5:5628-5636. [PMID: 23685533 DOI: 10.1039/c3nr00985h] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We present an innovative approach to the production of sub-100 nm hollow Au-SnO2 hybrid nanospheres, employing a low-cost, surfactant-free and environmentally friendly solution-based route. The hollow hybrid nanostructures were synthesized using a seed-mediated hydrothermal method, which can be divided into two stages: (1) formation of multicore-shell Au@SnO2 nanoparticles (NPs) and (2) thermal diffusion and ripening to form hollow Au-SnO2 hybrid NPs. The morphology, optical properties and formation mechanism were determined by a collection of joint techniques. Photocatalytic degradation of Rhodamine B (RhB) in the liquid phase served as a probe reaction to evaluate the activity of the as-prepared hollow hybrid Au-SnO2 NPs under the irradiation of both visible light and ultraviolet light. Significantly, the as-obtained Au-SnO2 hybrid nanostructures exhibited enhanced visible light or UV photocatalytic abilities, remarkably superior to commercial pure SnO2 products and P25 TiO2, mainly owing to the effective electron hole separation at the SnO2-Au interfaces and strong localization of plasmonic near-fields effects.
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Affiliation(s)
- Wei Wu
- School of Printing and Packaging, School of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, PR China.
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26
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Singh J, Bhondekar AP, Singla ML, Sharma A. Facile route for the synthesis of a vertically aligned ZnO-PANI nanohybrid film for polyphenol sensing. ACS APPLIED MATERIALS & INTERFACES 2013; 5:5346-5357. [PMID: 23692277 DOI: 10.1021/am401257q] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Vertically aligned zinc oxide (ZnO) nanorods have been fabricated on a polyaniline (PANI) film template after electrochemical seeding and hydrothermal growth in a nutrient medium at a low temperature of 65 °C. Dense c-oriented [0001], hexagonal-shaped, vertically aligned ZnO nanorods are obtained on the PANI film surface, which is confirmed by X-ray diffraction and scanning electron microscopy studies. The nanohybrid film used as the working electrode has been characterized for sensing catechin polyphenol in different tea varieties through cyclic voltammetry. Principal component analysis shows enhancement in the classification ability of the nanohybrid film for various concentrations of catechin standard and tea infusions.
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Affiliation(s)
- Jagvir Singh
- Council for Scientific and Industrial Research (CSIR), Central Scientific Instruments Organisation (CSIO), Chandigarh 160030, India.
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27
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Chen JS, Lou XWD. SnO₂-based nanomaterials: synthesis and application in lithium-ion batteries. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2013; 9:1877-93. [PMID: 23386368 DOI: 10.1002/smll.201202601] [Citation(s) in RCA: 218] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Indexed: 05/26/2023]
Abstract
The development of new electrode materials for lithium-ion batteries (LIBs) has always been a focal area of materials science, as the current technology may not be able to meet the high energy demands for electronic devices with better performance. Among all the metal oxides, tin dioxide (SnO₂) is regarded as a promising candidate to serve as the anode material for LIBs due to its high theoretical capacity. Here, a thorough survey is provided of the synthesis of SnO₂-based nanomaterials with various structures and chemical compositions, and their application as negative electrodes for LIBs. It covers SnO₂ with different morphologies ranging from 1D nanorods/nanowires/nanotubes, to 2D nanosheets, to 3D hollow nanostructures. Nanocomposites consisting of SnO₂ and different carbonaceous supports, e.g., amorphous carbon, carbon nanotubes, graphene, are also investigated. The use of Sn-based nanomaterials as the anode material for LIBs will be briefly discussed as well. The aim of this review is to provide an in-depth and rational understanding such that the electrochemical properties of SnO₂-based anodes can be effectively enhanced by making proper nanostructures with optimized chemical composition. By focusing on SnO₂, the hope is that such concepts and strategies can be extended to other potential metal oxides, such as titanium dioxide or iron oxides, thus shedding some light on the future development of high-performance metal-oxide based negative electrodes for LIBs.
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Affiliation(s)
- Jun Song Chen
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore 637459, Singapore
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28
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Wang H, Liu Y, Hu P, He L, Li J, Guo L. AgBr Nanocrystals from Plates to Cubes and Their Photocatalytic Properties. ChemCatChem 2013. [DOI: 10.1002/cctc.201200629] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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29
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Ghosh S, Das K, Chakrabarti K, De SK. Effect of oleic acidligand on photophysical, photoconductive and magnetic properties of monodisperse SnO2quantum dots. Dalton Trans 2013; 42:3434-46. [DOI: 10.1039/c2dt31764h] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Liu X, Pan L, Chen T, Li J, Yu K, Sun Z, Sun C. Visible light photocatalytic degradation of methylene blue by SnO2 quantum dots prepared via microwave-assisted method. Catal Sci Technol 2013. [DOI: 10.1039/c3cy00013c] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Xiao G, Wang Y, Ning J, Wei Y, Liu B, Yu WW, Zou G, Zou B. Recent advances in IV–VI semiconductor nanocrystals: synthesis, mechanism, and applications. RSC Adv 2013. [DOI: 10.1039/c3ra23209c] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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32
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Bateer B, Tian C, Qu Y, Du S, Tan T, Wang R, Tian G, Fu H. Facile synthesis and shape control of Fe3O4 nanocrystals with good dispersion and stabilization. CrystEngComm 2013. [DOI: 10.1039/c3ce40123e] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Kim S, Kim M, Kim T, Baik H, Lee K. Evolution of space-efficient and facet-specific ZnO 3-D nanostructures and their application in photocatalysis. CrystEngComm 2013. [DOI: 10.1039/c2ce26557e] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Archana PS, Naveen Kumar E, Vijila C, Ramakrishna S, Yusoff MM, Jose R. Random nanowires of nickel doped TiO2with high surface area and electron mobility for high efficiency dye-sensitized solar cells. Dalton Trans 2013; 42:1024-32. [DOI: 10.1039/c2dt31775c] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Wang H, Yang J, Li X, Zhang H, Li J, Guo L. Facet-dependent photocatalytic properties of AgBr nanocrystals. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2012; 8:2802-2806. [PMID: 22778051 DOI: 10.1002/smll.201200055] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Revised: 03/20/2012] [Indexed: 06/01/2023]
Abstract
Polyhedral AgBr nanocrystals, evolved from cubes through truncated cubes and finally to high-symmetry octahedra, which corresponds to a progressive shrinkage of exposed {100} facets and enlargement of exposed {111} facets, are prepared by facile precipitation reactions. The as- prepared AgBr nanocrystals exhibit facet-dependent catalytic properties, with the {111}-dominated octahedra showing the highest photocatalytic activities.
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Affiliation(s)
- Hua Wang
- School of Chemistry and Environment, Beihang University, Beijing 100191, China
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36
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Wu W, Zhang S, Xiao X, Zhou J, Ren F, Sun L, Jiang C. Controllable synthesis, magnetic properties, and enhanced photocatalytic activity of spindlelike mesoporous α-Fe(2)O(3)/ZnO core-shell heterostructures. ACS APPLIED MATERIALS & INTERFACES 2012; 4:3602-9. [PMID: 22692878 DOI: 10.1021/am300669a] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Mesoporous spindlelike iron oxide/ZnO core-shell heterostructures are successfully fabricated by a low-cost, surfactant-free, and environmentally friendly seed-mediate strategy with the help of postannealing treatment. The material composition and stoichiometry, as well as these magnetic and optical properties, have been examined and verified by means of high-resolution transmission electron microscopy and X-ray diffraction, the thickness of ZnO layer can be simply tailored by the concentration of zinc precursor. Considering that both α-Fe2O3 and ZnO are good photocatalytic materials, we have investigated the photodegradation performances of the core-shell heterostructures using organic dyes Rhodamin B (RhB). It is interesting to find that the as-obtained iron oxides/ZnO core-shell heterostructures exhibited enhanced visible light or UV photocatalytic abilities, remarkably superior to the as-used α-Fe2O3 seeds and commercial TiO2 products (P25), mainly owing to the synergistic effect between the narrow and wide bandgap semiconductors and effective electron-hole separation at the interfaces of iron oxides/ZnO.
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Affiliation(s)
- Wei Wu
- School of Printing and Packaging and School of Chemistry and Molecular Science, ‡Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, §Center for Electronic Microscopy and School of Physics and Technology, Wuhan University , Wuhan 430072, P. R. China
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37
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Han X, Li L, Wang C. Synthesis of Tin Dioxide Nanooctahedra with Exposed High‐Index {332} Facets and Enhanced Selective Gas Sensing Properties. Chem Asian J 2012; 7:1572-5. [DOI: 10.1002/asia.201200116] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Revised: 02/26/2012] [Indexed: 11/06/2022]
Affiliation(s)
- Xiguang Han
- Department of Chemistry, School of Chemistry and Chemical Engineering, Xuzhou Normal University, Xuzhou, Jiangsu 221116 (P. R. China)
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Xuzhou Normal University, Xuzhou, 221116 (P. R. China)
| | - Liang Li
- Department of Chemistry, School of Chemistry and Chemical Engineering, Xuzhou Normal University, Xuzhou, Jiangsu 221116 (P. R. China)
| | - Chao Wang
- Department of Chemistry, School of Chemistry and Chemical Engineering, Xuzhou Normal University, Xuzhou, Jiangsu 221116 (P. R. China)
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38
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Wang H, Bai Y, Yang J, Lang X, Li J, Guo L. A Facile Way to Rejuvenate Ag3PO4 as a Recyclable Highly Efficient Photocatalyst. Chemistry 2012; 18:5524-9. [DOI: 10.1002/chem.201103189] [Citation(s) in RCA: 152] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2011] [Revised: 02/20/2012] [Indexed: 11/06/2022]
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39
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Wang H, Lang X, Gao J, Liu W, Wu D, Wu Y, Guo L, Li J. Polyhedral AgBr Microcrystals with an Increased Percentage of Exposed {111} Facets as a Highly Efficient Visible-Light Photocatalyst. Chemistry 2012; 18:4620-6. [DOI: 10.1002/chem.201102694] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2011] [Revised: 12/16/2011] [Indexed: 12/11/2022]
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40
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Wang X, Han X, Xie S, Kuang Q, Jiang Y, Zhang S, Mu X, Chen G, Xie Z, Zheng L. Controlled Synthesis and Enhanced Catalytic and Gas-Sensing Properties of Tin Dioxide Nanoparticles with Exposed High-Energy Facets. Chemistry 2012; 18:2283-9. [DOI: 10.1002/chem.201103280] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2011] [Indexed: 11/10/2022]
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41
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Wang H, Li B, Gao J, Tang M, Feng H, Li J, Guo L. SnO2 hollow nanospheres enclosed by single crystalline nanoparticles for highly efficient dye-sensitized solar cells. CrystEngComm 2012. [DOI: 10.1039/c2ce06531b] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Chen JS, Ng MF, Wu HB, Zhang L, Lou XW(D. Synthesis of phase-pure SnO2 nanosheets with different organized structures and their lithium storage properties. CrystEngComm 2012. [DOI: 10.1039/c2ce25349f] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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43
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Zhang H, He Q, Zhu X, Pan D, Deng X, Jiao Z. Surfactant-free solution phase synthesis of monodispersed SnO2 hierarchical nanostructures and gas sensing properties. CrystEngComm 2012. [DOI: 10.1039/c2ce06558d] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Huang J, Xu X, Gu C, Yao S, Sun Y, Liu J. Large-scale selective preparation of porous SnO2 3D architectures and their gas-sensing property. CrystEngComm 2012. [DOI: 10.1039/c2ce06738b] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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45
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Sun P, You L, Sun Y, Chen N, Li X, Sun H, Ma J, Lu G. Novel Zn-doped SnO2hierarchical architectures: synthesis, characterization, and gas sensing properties. CrystEngComm 2012. [DOI: 10.1039/c1ce06197f] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Wu W, Zhang S, Ren F, Xiao X, Zhou J, Jiang C. Controlled synthesis of magnetic iron oxides@SnO2 quasi-hollow core-shell heterostructures: formation mechanism, and enhanced photocatalytic activity. NANOSCALE 2011; 3:4676-4684. [PMID: 21947413 DOI: 10.1039/c1nr10728c] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Iron oxide/SnO(2) magnetic semiconductor core-shell heterostructures with high purity were synthesized by a low-cost, surfactant-free and environmentally friendly hydrothermal strategy via a seed-mediated method. The morphology and structure of the hybrid nanostructures were characterized by means of high-resolution transmission electron microscopy and X-ray diffraction. The morphology evolution investigations reveal that the Kirkendall effect directs the diffusion and causes the formation of iron oxide/SnO(2) quasi-hollow particles. Significantly, the as-obtained iron oxides/SnO(2) core-shell heterostructures exhibited enhanced visible light or UV photocatalytic abilities, remarkably superior to as-used α-Fe(2)O(3) seeds and commercial SnO(2) products, mainly owing to the effective electron hole separation at the iron oxides/SnO(2) interfaces.
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Affiliation(s)
- Wei Wu
- School of Printing and Packaging, Wuhan University, Wuhan, 430072, PR China.
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47
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Wu W, Zhang S, Zhou J, Xiao X, Ren F, Jiang C. Controlled Synthesis of Monodisperse Sub-100 nm Hollow SnO2 Nanospheres: A Template- and Surfactant-Free Solution-Phase Route, the Growth Mechanism, Optical Properties, and Application as a Photocatalyst. Chemistry 2011; 17:9708-19. [DOI: 10.1002/chem.201100694] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2011] [Indexed: 11/06/2022]
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48
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Sapkota A, Anceno AJ, Baruah S, Shipin OV, Dutta J. Zinc oxide nanorod mediated visible light photoinactivation of model microbes in water. NANOTECHNOLOGY 2011; 22:215703. [PMID: 21451231 DOI: 10.1088/0957-4484/22/21/215703] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The inactivation of model microbes in aqueous matrix by visible light photocatalysis as mediated by ZnO nanorods was investigated. ZnO nanorods were grown on glass substrate following a hydrothermal route and employed in the inactivation of gram-negative Escherichia coli and gram-positive Bacillus subtilis in MilliQ water. The concentration of Zn(2+) ions in the aqueous matrix, bacterial cell membrane damage, and DNA degradation at post-exposure were also studied. The inactivation efficiencies for both organisms under light conditions were about two times higher than under dark conditions across the cell concentrations assayed. Anomalies in supernatant Zn(2+) concentration were observed under both conditions as compared to control treatments, while cell membrane damage and DNA degradation were observed only under light conditions. Inactivation under dark conditions was hence attributed to the bactericidal effect of Zn(2+) ions, while inactivation under light conditions was due to the combined effects of Zn(2+) ions and photocatalytically mediated electron injection. The reduction of pathogenic bacterial densities by the photocatalytically active ZnO nanorods in the presence of visible light implies potential ex situ application in water decontamination at ambient conditions under sunlight.
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Affiliation(s)
- Ajaya Sapkota
- Center of Excellence in Nanotechnology, Asian Institute of Technology, Klong Luang, Pathumthani 12120, Thailand
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49
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Liu J, Hu Y, Gu F, Ma J, Li C. Tin Oxide Nanowires Synthesized via Flat Flame Deposition: Structures and Formation Mechanism. Ind Eng Chem Res 2011. [DOI: 10.1021/ie102244q] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jie Liu
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Yanjie Hu
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Feng Gu
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Jan Ma
- School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798
| | - Chunzhong Li
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
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50
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Li Z, Zhao Q, Fan W, Zhan J. Porous SnO2 nanospheres as sensitive gas sensors for volatile organic compounds detection. NANOSCALE 2011; 3:1646-1652. [PMID: 21279215 DOI: 10.1039/c0nr00728e] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Porous SnO(2) nanospheres with high surface areas have been synthesized through a solvothermal method in the absence of any templates. The structure and morphology of the resultant products were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and nitrogen adsorption-desorption technique. The as-prepared SnO(2) porous nanospheres with the diameters ranging from 90-150 nm are composed of small nanocrystals with average sizes of less than 10 nm. Results demonstrated that the formation of porous SnO(2) nanospheres is ascribed to etching the center part of the nanospheres. It was found that hydrochloric acid and NaClO played important roles in determining the final morphologies of the porous SnO(2) nanospheres. The gas sensing properties of the as-prepared porous SnO(2) nanospheres were investigated. By the comparative gas sensing tests, the porous SnO(2) nanospheres exhibited a superior gas sensing performance toward ppb level 2-chloroethanol and formaldehyde vapor, implying promising applications in detecting toxic volatile organic compounds (VOCs).
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Affiliation(s)
- Zhipeng Li
- Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Department of Chemistry, Shandong University, Jinan, 250100, Shandong, PR China
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