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Yang X, Ren T, Zhu H, Jia D. Hydrazine-Assisted Synthesis, Structures, Photoelectricity, and Photocatalysis of Ternary Mercury-Tellurostannate Hybrids with Transition-Metal Complexes. Inorg Chem 2024; 63:6638-6648. [PMID: 38556744 DOI: 10.1021/acs.inorgchem.3c04400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/02/2024]
Abstract
Tellurostannates are traditionally prepared by multistep reactions using the tellurides SnTe, SnTe2, K4SnTe4, or A6SnTe6 (A = K, Rb, or Cs) as precursors, which are usually prepared by the molten reaction of alkali metals Sn and Te under harsh synthetic conditions. Differently, ternary Hg-tellurostannate hybrids [Mn(en)3]HgSnTe3(Te2) (1) (en = ethylenediamine), [Mn(dien)2]HgSnTe3(Te2) (2), and [Fe(dien)2]HgSnTe3(Te2) (3) (dien = diethylenetriamine) were synthesized by one-pot reactions using Sn and Te powders as starting materials in the presence of hydrazine under mild solvothermal conditions. In 1, HgTe3 and SnTe4 units are joined via Te-sharing to form a 1-D polymeric chain [HgSnTe3(Te2)]n2n-, while the [HgSnTe3(Te2)]n2n- chains in 2 and 3 are composed of HgTe4 and SnTe4 units. The common feature of the [HgSnTe3(Te2)2-]n chains in 1-3 is that they are constructed by both the telluride anion Te2- and the polytelluride anion Te22-. 1-3 exhibited strong photocurrent responses with current densities of 5.26, 3.38, and 3.94 μA cm-2, respectively. They showed effective photocatalytic activities for methylene blue degradation with degradation ratios in the range of 85.3-94.6% after light irradiation for 80 min. Investigation of the photocatalytic mechanism showed that •O2- radicals and h+ holes were the main active substances in the photodegradation.
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Affiliation(s)
- Xiao Yang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People's Republic of China
| | - Taohong Ren
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People's Republic of China
| | - Hongjin Zhu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People's Republic of China
| | - Dingxian Jia
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, People's Republic of China
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2
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Han H, Yang J, Li X, Qi Y, Yang Z, Han Z, Jiang Y, Stenzel M, Li H, Yin Y, Du Y, Liu J, Wang F. Shining light on transition metal sulfides: New choices as highly efficient antibacterial agents. NANO RESEARCH 2021; 14:2512-2534. [PMID: 33500771 PMCID: PMC7818700 DOI: 10.1007/s12274-021-3293-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 12/10/2020] [Accepted: 12/13/2020] [Indexed: 05/21/2023]
Abstract
Globally, millions of people die of microbial infection-related diseases every year. The more terrible situation is that due to the overuse of antibiotics, especially in developing countries, people are struggling to fight with the bacteria variation. The emergence of super-bacteria will be an intractable environmental and health hazard in the future unless novel bactericidal weapons are mounted. Consequently, it is critical to develop viable antibacterial approaches to sustain the prosperous development of human society. Recent researches indicate that transition metal sulfides (TMSs) represent prominent bactericidal application potential owing to the meritorious antibacterial performance, acceptable biocompatibility, high solar energy utilization efficiency, and excellent photo-to-thermal conversion characteristics, and thus, a comprehensive review on the recent advances in this area would be beneficial for the future development. In this review article, we start with the antibacterial mechanisms of TMSs to provide a preliminary understanding. Thereafter, the state-of-the-art research progresses on the strategies for TMSs materials engineering so as to promote their antibacterial properties are systematically surveyed and summarized, followed by a summary of the practical application scenarios of TMSs-based antibacterial platforms. Finally, based on the thorough survey and analysis, we emphasize the challenges and future development trends in this area.
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Affiliation(s)
- Hecheng Han
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of Education, Shandong University, Jinan, 250061 China
| | - Jingjing Yang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of Education, Shandong University, Jinan, 250061 China
| | - Xiaoyan Li
- Department of Endodontics, School and Hospital of Stomatology, Cheeloo College of Medicine & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Shandong University, Jinan, 250012 China
| | - Yuan Qi
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of Education, Shandong University, Jinan, 250061 China
| | - Zhengyi Yang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of Education, Shandong University, Jinan, 250061 China
| | - Zejun Han
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of Education, Shandong University, Jinan, 250061 China
| | - Yanyan Jiang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of Education, Shandong University, Jinan, 250061 China
- Suzhou Institute of Shandong University, Suzhou, 215123 China
- ShenZhen Research Institute of Shandong University, Shenzhen, 518057 China
| | - Martina Stenzel
- School of Chemistry, University of New South Wales, Sydney, NSW 2052 Australia
| | - Hui Li
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of Education, Shandong University, Jinan, 250061 China
| | - Yixin Yin
- Oral Implantology Center, Jinan Stomatology Hospital, Jinan, 250001 China
| | - Yi Du
- Oral Implantology Center, Jinan Stomatology Hospital, Jinan, 250001 China
| | - Jiurong Liu
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of Education, Shandong University, Jinan, 250061 China
| | - Fenglong Wang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of Education, Shandong University, Jinan, 250061 China
- ShenZhen Research Institute of Shandong University, Shenzhen, 518057 China
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Yu X, Xie J, Dong H, Liu Q, Li Y. Effects of oxygen defects on electronic band structures and dopant migration in Sn-doped TiO2 by density functional studies. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137732] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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4
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Electrospinning synthesis of N-doped TiO2 fiber membranes and its enhanced photocatalysis performance. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-020-01286-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Tunable Composition Aqueous-Synthesized Mixed-Phase TiO2 Nanocrystals for Photo-Assisted Water Decontamination: Comparison of Anatase, Brookite and Rutile Photocatalysts. Catalysts 2020. [DOI: 10.3390/catal10040407] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Mixed-phase nanoTiO2 materials attract a lot of attention as advanced photocatalysts for water decontamination due to their intrinsic structure that allows better photo-excited e−cb-h+vb charge separation, hence improved photocatalytic efficiency. Currently, the best-known mixed-phase TiO2 photocatalyst is P25 with approximate composition 80% Anatase/20% Rutile (A/r). Apart from Anatase (A) and Rutile (R) phases, there is Brookite (B) which has been evaluated less as photocatalyst in mixed-phase nanoTiO2 systems. In this work we present a sustainable solution process to synthesize tunable composition mixed-phase nanotitania photocatalysts in a continuously stirred tank reactor (CSTR) by modulating conditions like pH, CTiCl4 and time. In particular three mixed-phase TiO2 nanomaterials were produced, namely one predominantly anatase with brookite as minor component (A/b), one predominantly brookite with minor component rutile (B/r), and one predominantly rutile with minor component brookite (R/b) and evaluated as photocatalysts in the degradation of methyl orange. The three semiconducting nanomaterials were characterized by XRD and Raman spectroscopy to quantify the phase ratios and subjected to nano-morphological characterization by FE-SEM and TEM/HR-TEM. The new mixed-phase nanoTiO2 materials are shown to be endowed with large specific surface area, ranging from 90–125 m2 g−1, double of that of P25, to be mesoporous and be surface-rich in Ti–OH molecular groups varying from 12%–20% versus 4% for P25. These properties though impact the adsorptive capacity with R/b and B/r removing > 50% of MO but not photocatalytic activity. The latter depends on nanograined mixed-phase structure and not mere assembly of different phase nanoparticles. First-order rate constants reveal essentially equivalent photocatalytic activity for anatase nanocrystals with either rutile (P25) or brookite (this work) domains.
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Li W, Kuang D, Gu P, Xiang M. Partially disordered TiO 2 nanotube photonic crystal: randomness characterization and tuning of reflected scattering light. NANOTECHNOLOGY 2020; 31:025711. [PMID: 31557752 DOI: 10.1088/1361-6528/ab483b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Introducing disorder into a periodic nanostructure can lead to specific optical behaviors. We present a method of anodic oxidation by adjusting the applied voltage and process time to introduce disorder to TiO2 nanotubes. The surface morphology of TiO2 was numerically investigated according to the morphologies measured with a scanning electron microscope by imaging processing and a statistical method. TiO2 nanotubes obtained under different fabrication conditions have various tube radii ranging from 20-40 nm and wall thicknesses ranging from 20-70 nm. We also evaluated the degree of disorder of the tube radius of the TiO2 nanotubes. The reflected scattering light distributions of laser sources were optically measured at different observing distances, which indicate that the presence of nanotubes enhances the scattering effect, reducing the scattered light intensity by more than 75%, and provide the relationship between the scattering effect and surface morphology of nanotubes. This discovery offers TiO2 nanotubes important application prospects in optical limiting and light confinement, such as stealth coating.
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Affiliation(s)
- Wenshuang Li
- Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology, and Institute of Modern Optics, Nankai University, Tianjin 300350, People's Republic of China
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Shwetharani R, Sakar M, Fernando CAN, Binas V, Balakrishna RG. Recent advances and strategies to tailor the energy levels, active sites and electron mobility in titania and its doped/composite analogues for hydrogen evolution in sunlight. Catal Sci Technol 2019. [DOI: 10.1039/c8cy01395k] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrogen production through photocatalytic water reduction, a potential path for future renewable and sustainable energy generation.
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Affiliation(s)
- R. Shwetharani
- Centre for Nano and Material Sciences
- Jain University
- Bangalore-562112
- India
| | - M. Sakar
- Centre for Nano and Material Sciences
- Jain University
- Bangalore-562112
- India
| | - C. A. N. Fernando
- Nano-Technology Research Lab
- Department of Electronics
- Wayamba University of Sri Lanka
- Kuliyapitiya
- Sri Lanka
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Zhang X, Li L, Zhou Q, Liang X, Liu D. Facile synthesis of novel gully-like double-sized mesoporous structural Sr-doped ZrO2–TiO2 composites with improved photocatalytic efficiency. J SOLID STATE CHEM 2019. [DOI: 10.1016/j.jssc.2018.10.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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9
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Chelli VR, Chakraborty S, Golder AK. Ag-doping on TiO2 using plant-based glycosidic compounds for high photonic efficiency degradative oxidation under visible light. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.08.140] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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10
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Template-free preparation of TiO2 microspheres for the photocatalytic degradation of organic dyes. KOREAN J CHEM ENG 2018. [DOI: 10.1007/s11814-018-0122-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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11
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12
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Deposition of quantum-sized Ag on TiO2 through adsorbed-layer nanoreactor synthesis and its performance for photodegrading phenol in seawater under visible-light irradiation. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.07.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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13
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Wu J, Li X, Shi W, Ling P, Sun Y, Jiao X, Gao S, Liang L, Xu J, Yan W, Wang C, Xie Y. Efficient Visible‐Light‐Driven CO
2
Reduction Mediated by Defect‐Engineered BiOBr Atomic Layers. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201803514] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ju Wu
- Hefei National Laboratory for Physical Sciences at Microscale University of Science & Technology of China Hefei Anhui 230026 P.R. China
| | - Xiaodong Li
- Hefei National Laboratory for Physical Sciences at Microscale University of Science & Technology of China Hefei Anhui 230026 P.R. China
| | - Wen Shi
- Hefei National Laboratory for Physical Sciences at Microscale University of Science & Technology of China Hefei Anhui 230026 P.R. China
| | - Peiquan Ling
- Hefei National Laboratory for Physical Sciences at Microscale University of Science & Technology of China Hefei Anhui 230026 P.R. China
| | - Yongfu Sun
- Hefei National Laboratory for Physical Sciences at Microscale University of Science & Technology of China Hefei Anhui 230026 P.R. China
| | - Xingchen Jiao
- Hefei National Laboratory for Physical Sciences at Microscale University of Science & Technology of China Hefei Anhui 230026 P.R. China
| | - Shan Gao
- Hefei National Laboratory for Physical Sciences at Microscale University of Science & Technology of China Hefei Anhui 230026 P.R. China
| | - Liang Liang
- Hefei National Laboratory for Physical Sciences at Microscale University of Science & Technology of China Hefei Anhui 230026 P.R. China
| | - Jiaqi Xu
- Hefei National Laboratory for Physical Sciences at Microscale University of Science & Technology of China Hefei Anhui 230026 P.R. China
| | - Wensheng Yan
- Hefei National Laboratory for Physical Sciences at Microscale University of Science & Technology of China Hefei Anhui 230026 P.R. China
| | - Chengming Wang
- Hefei National Laboratory for Physical Sciences at Microscale University of Science & Technology of China Hefei Anhui 230026 P.R. China
| | - Yi Xie
- Hefei National Laboratory for Physical Sciences at Microscale University of Science & Technology of China Hefei Anhui 230026 P.R. China
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14
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Wu J, Li X, Shi W, Ling P, Sun Y, Jiao X, Gao S, Liang L, Xu J, Yan W, Wang C, Xie Y. Efficient Visible-Light-Driven CO 2 Reduction Mediated by Defect-Engineered BiOBr Atomic Layers. Angew Chem Int Ed Engl 2018; 57:8719-8723. [PMID: 29761617 DOI: 10.1002/anie.201803514] [Citation(s) in RCA: 203] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 04/27/2018] [Indexed: 11/06/2022]
Abstract
Solar CO2 reduction efficiency is largely limited by poor photoabsorption, sluggish electron-hole separation, and a high CO2 activation barrier. Defect engineering was employed to optimize these crucial processes. As a prototype, BiOBr atomic layers were fabricated and abundant oxygen vacancies were deliberately created on their surfaces. X-ray absorption near-edge structure and electron paramagnetic resonance spectra confirm the formation of oxygen vacancies. Theoretical calculations reveal the creation of new defect levels resulting from the oxygen vacancies, which extends the photoresponse into the visible-light region. The charge delocalization around the oxygen vacancies contributes to CO2 conversion into COOH* intermediate, which was confirmed by in situ Fourier-transform infrared spectroscopy. Surface photovoltage spectra and time-resolved fluorescence emission decay spectra indicate that the introduced oxygen vacancies promote the separation of carriers. As a result, the oxygen-deficient BiOBr atomic layers achieve visible-light-driven CO2 reduction with a CO formation rate of 87.4 μmol g-1 h-1 , which was not only 20 and 24 times higher than that of BiOBr atomic layers and bulk BiOBr, respectively, but also outperformed most previously reported single photocatalysts under comparable conditions.
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Affiliation(s)
- Ju Wu
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science & Technology of China, Hefei, Anhui, 230026, P.R. China
| | - Xiaodong Li
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science & Technology of China, Hefei, Anhui, 230026, P.R. China
| | - Wen Shi
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science & Technology of China, Hefei, Anhui, 230026, P.R. China
| | - Peiquan Ling
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science & Technology of China, Hefei, Anhui, 230026, P.R. China
| | - Yongfu Sun
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science & Technology of China, Hefei, Anhui, 230026, P.R. China
| | - Xingchen Jiao
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science & Technology of China, Hefei, Anhui, 230026, P.R. China
| | - Shan Gao
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science & Technology of China, Hefei, Anhui, 230026, P.R. China
| | - Liang Liang
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science & Technology of China, Hefei, Anhui, 230026, P.R. China
| | - Jiaqi Xu
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science & Technology of China, Hefei, Anhui, 230026, P.R. China
| | - Wensheng Yan
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science & Technology of China, Hefei, Anhui, 230026, P.R. China
| | - Chengming Wang
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science & Technology of China, Hefei, Anhui, 230026, P.R. China
| | - Yi Xie
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science & Technology of China, Hefei, Anhui, 230026, P.R. China
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15
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Facile synthesis of Mn-doped TiO2 nanotubes with enhanced visible light photocatalytic activity. J APPL ELECTROCHEM 2018. [DOI: 10.1007/s10800-018-1198-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Synthesis of Biphasic Defective TiO2–x/Reduced Graphene Oxide Nanocomposites with Highly Enhanced Photocatalytic Activity. Chem Res Chin Univ 2018. [DOI: 10.1007/s40242-018-7369-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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17
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Shakir S, Abd-ur-Rehman HM, Yunus K, Iwamoto M, Periasamy V. Fabrication of un-doped and magnesium doped TiO2 films by aerosol assisted chemical vapor deposition for dye sensitized solar cells. JOURNAL OF ALLOYS AND COMPOUNDS 2018; 737:740-747. [DOI: 10.1016/j.jallcom.2017.12.165] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Shao X, Nie S, Shao L, Zhang B, Li B. Synthesis, Adsorptive, and Photocatalytic Properties of Carbon Nanotubes/TiO2 Nanocomposite Photocatalysts. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2018. [DOI: 10.1134/s0036024417130271] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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19
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Zhou Q, Li L, Xin Y, Liu D, Zhang X. Three-dimensionally ordered macroporous Sn4+-doped TiO2 with anatase–rutile mixed phase via Pt loading by photoreduction method: enhanced photodegradation and hydrogen production performance. NEW J CHEM 2018. [DOI: 10.1039/c8nj02903b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
3DOM Pt/Sn–TiO2 with anatase–rutile mixed phase was successfully prepared by the colloidal crystal template method and the photoreduction method. A series of photocatalytic experiments showed that 3DOM Pt/Sn–TiO2 exhibited significant photocatalytic activity in photodegradation and water splitting.
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Affiliation(s)
- Qianlong Zhou
- College of Materials Science and Engineering
- Qiqihar University
- Qiqihar
- China
- College of Chemistry and Chemical Engineering
| | - Li Li
- College of Materials Science and Engineering
- Qiqihar University
- Qiqihar
- China
- College of Chemistry and Chemical Engineering
| | - Yuying Xin
- College of Chemistry and Chemical Engineering
- Qiqihar University
- Qiqihar
- China
| | - Dongxue Liu
- College of Materials Science and Engineering
- Qiqihar University
- Qiqihar
- China
| | - Xinyue Zhang
- College of Chemistry and Chemical Engineering
- Qiqihar University
- Qiqihar
- China
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Efficient Photocatalytic Activity of TiO2 Nanocrystals Modified with Organic Electron Donor and Barium Doping for Azo Group Decomposition Under UV Irradiation. Catal Letters 2017. [DOI: 10.1007/s10562-017-2201-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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21
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Wang F, Wong RJ, Ho JH, Jiang Y, Amal R. Sensitization of Pt/TiO 2 Using Plasmonic Au Nanoparticles for Hydrogen Evolution under Visible-Light Irradiation. ACS APPLIED MATERIALS & INTERFACES 2017; 9:30575-30582. [PMID: 28829570 DOI: 10.1021/acsami.7b06265] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Au nanoparticles with different sizes (10, 20, 30, and 50 nm) were synthesized using a seed-assisted approach and anchored onto Pt/TiO2 employing 3-mercaptopropionic acid as the organic linker. The sizes of the Au nanoparticles were controlled within a narrow range so that the size-dependent surface plasmonic resonance effect on sensitizing Pt/TiO2 can be thoroughly studied. We found that 20 nm Au nanoparticles (Au20) gave the best performance in sensitizing Pt/TiO2 to generate H2 under visible-light illumination. Photoelectrochemical measurements indicated that Au20-Pt/TiO2 exhibited the most efficient "hot" electrons separation among the studied catalysts, correlating well with the photocatalytic activity. The superior performance of Au-supported Pt/TiO2 (Au20-Pt/TiO2) compared with Au anchored to TiO2 (Au20/TiO2) revealed the important role of Pt as a cocatalyst for proton reduction. To elucidate how the visible-light excited hot electrons in Au nanoparticles involved in the proton-reduction reaction process, Au20/TiO2 was irradiated by visible light (λ > 420 nm) with the presence of Pt precursor (H2PtCl6) in a methanol aqueous solution under deaerated condition. Energy-dispersive X-ray spectroscopy mapping analysis on the recovered sample showed that Pt ions could be reduced on the surfaces of both Au nanoparticles and TiO2 support. This observation indicated that the generated hot electrons on Au nanoparticles were injected into the TiO2 conduction band, which were then subsequently transferred to Pt nanoparticles where proton reduction proceeded. Besides, the excited hot electrons could also participate in the proton reduction on Au nanoparticles surface.
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Affiliation(s)
- Fenglong Wang
- School of Chemical Engineering, UNSW Australia , Sydney, New South Wales 2052, Australia
| | - Roong Jien Wong
- School of Chemical Engineering, UNSW Australia , Sydney, New South Wales 2052, Australia
| | - Jie Hui Ho
- School of Chemical Engineering, UNSW Australia , Sydney, New South Wales 2052, Australia
| | - Yijiao Jiang
- Department of Engineering, Macquarie University , Sydney, New South Wales 2109, Australia
| | - Rose Amal
- School of Chemical Engineering, UNSW Australia , Sydney, New South Wales 2052, Australia
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22
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Bärtsch M, Niederberger M. The Role of Interfaces in Heterostructures. Chempluschem 2017; 82:42-59. [DOI: 10.1002/cplu.201600519] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Revised: 12/16/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Mario Bärtsch
- Laboratory for Multifunctional Materials; Department of Materials; ETH Zürich; Vladimir-Prelog-Weg 5 8093 Zürich Switzerland
| | - Markus Niederberger
- Laboratory for Multifunctional Materials; Department of Materials; ETH Zürich; Vladimir-Prelog-Weg 5 8093 Zürich Switzerland
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Zhang C, Zhou Y, Zhang Y, Zhao S, Fang J, Sheng X. In situ doping of Pt active sites via Sn in double-shelled TiO2 hollow nanospheres with enhanced photocatalytic H2 production efficiency. NEW J CHEM 2017. [DOI: 10.1039/c7nj02435e] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A Sn4+-doped double-shelled Pt/TiO2 hollow nanocatalyst (DHS-SnPt) with excellent photocatalytic H2 production efficiency was prepared successfully via a facile hydrothermal method.
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Affiliation(s)
- Chao Zhang
- School of Chemistry and Chemical Engineering
- Southeast University
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Nanjing 211189
- China
| | - Yuming Zhou
- School of Chemistry and Chemical Engineering
- Southeast University
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Nanjing 211189
- China
| | - Yiwei Zhang
- School of Chemistry and Chemical Engineering
- Southeast University
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Nanjing 211189
- China
| | - Shuo Zhao
- School of Chemistry and Chemical Engineering
- Southeast University
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Nanjing 211189
- China
| | - Jiasheng Fang
- School of Chemistry and Chemical Engineering
- Southeast University
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Nanjing 211189
- China
| | - Xiaoli Sheng
- School of Chemistry and Chemical Engineering
- Southeast University
- Jiangsu Optoelectronic Functional Materials and Engineering Laboratory
- Nanjing 211189
- China
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Kumar S, Parthasarathy R, Singh AP, Wickman B, Thirumal M, Ganguli AK. Dominant {100} facet selectivity for enhanced photocatalytic activity of NaNbO3 in NaNbO3/CdS core/shell heterostructures. Catal Sci Technol 2017. [DOI: 10.1039/c6cy02098d] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Facet-selective synthesis of NaNbO3 crystals in cubic and orthorhombic phases and enhanced photocatalytic activity depending on the surface energy of the facets.
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Affiliation(s)
- Sandeep Kumar
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi 110016
- India
- Department of Chemistry
| | - R. Parthasarathy
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi 110016
- India
| | - Aadesh P. Singh
- Department of Physics
- Indian Institute of Technology Delhi
- New Delhi 110016
- India
- Division of Chemical Physics
| | - Björn Wickman
- Division of Chemical Physics
- Department of Physics
- Chalmers University of Technology
- SE-412 96 Gothenburg
- Sweden
| | | | - Ashok K. Ganguli
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi 110016
- India
- Institute of Nano Science & Technology
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Kim M, Park S, Ryu DY, Kim K. Improving thermal stability of organic photovoltaics via constructing interdiffused bilayer of polymer/fullerene. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.09.053] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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