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Zhao Y, Shu Y, Linghu X, Liu W, Di M, Zhang C, Shan D, Yi R, Wang B. Modification engineering of TiO 2-based nanoheterojunction photocatalysts. CHEMOSPHERE 2024; 346:140595. [PMID: 37951392 DOI: 10.1016/j.chemosphere.2023.140595] [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: 06/06/2023] [Revised: 09/27/2023] [Accepted: 10/29/2023] [Indexed: 11/14/2023]
Abstract
Titanium dioxide (TiO2)-based photocatalysts have gained increasing attention for their versatile applications in organic degradation, hydrogen production, air purification, and CO2 reduction. Various TiO2-based heterojunction structures, including type I, type II, Schottky junction, Z-scheme, and S-scheme, have been extensively studied. The current research frontier is centered on the engineering modifications of TiO2-based nanoheterojunction photocatalysts, such as defect engineering, morphological engineering, crystal phase/facet engineering, and multijunction engineering. These modifications enhance carrier transport, separation, and light absorption, thereby improving the photocatalytic performance. Remarkably, this aspect has been less addressed in existing reviews. This review aims to fill this gap by focusing on the engineering modifications of TiO2-based nanoheterojunction photocatalysts. We delve into specific topics like oxygen vacancies, n-p homojunctions, and double defects. The review also systematically discusses the applications of multidimensional heterojunctions and examines carrier transport pathways in heterophase/facet junctions and their interactions with heterojunctions. A comprehensive summary of multijunction systems, including multi-Schottky junctions, semiconductor-based heterojunction-attached Schottky junctions, and multisemiconductor-based heterojunctions, is presented. Lastly, we outline future perspectives in this promising research field. This paper will assist researchers in constructing more efficient TiO2-based nanoheterojunction photocatalysts.
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Affiliation(s)
- Yue Zhao
- Department of Occupational and Environmental Health, School of Public Health, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, 300070, China
| | - Yue Shu
- Department of Occupational and Environmental Health, School of Public Health, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, 300070, China
| | - Xiaoyu Linghu
- Department of Occupational and Environmental Health, School of Public Health, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, 300070, China
| | - Wenqi Liu
- Department of Occupational and Environmental Health, School of Public Health, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, 300070, China
| | - Mengyu Di
- Department of Occupational and Environmental Health, School of Public Health, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, 300070, China
| | - Changyuan Zhang
- Department of Occupational and Environmental Health, School of Public Health, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, 300070, China
| | - Dan Shan
- Department of Medical, Tianjin Stomatological Hospital, School of Medicine, Nankai University, Tianjin, 300041, China
| | - Ran Yi
- Department of Occupational and Environmental Health, School of Public Health, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, 300070, China
| | - Baiqi Wang
- Department of Occupational and Environmental Health, School of Public Health, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, 300070, China; National Demonstration Center for Experimental Preventive Medicine Education (Tianjin Medical University), Tianjin, 300070, China.
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Eisapour M, Zhao H, Zhao J, Roostaei T, Li Z, Omidkar A, Hu J, Chen Z. p-n heterojunction of nickel oxide on titanium dioxide nanosheets for hydrogen and value-added chemicals coproduction from glycerol photoreforming. J Colloid Interface Sci 2023; 647:255-263. [PMID: 37253294 DOI: 10.1016/j.jcis.2023.05.138] [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: 03/25/2023] [Revised: 05/06/2023] [Accepted: 05/20/2023] [Indexed: 06/01/2023]
Abstract
Selective photocatalysis to simultaneously produce sustainable hydrogen and value-added chemicals from biomass or biomass derivates is attracting extensive investigations. However, the lack of bifunctional photocatalyst greatly limits the possibility to realize the "one stone kills two birds" scenario. Herein, anatase titanium dioxide (TiO2) nanosheets are rationally designed as the n-type semiconductor, combining with nickel oxide (NiO) nanoparticles, the p-type semiconductor, resulting in the formation of a p-n heterojunction structure. The shorten charge transfer path and the spontaneous formation of p-n heterojunction endow the photocatalyst with efficient spatial separation of photogenerated electrons and holes. As a result, TiO2 accumulates electrons for efficient hydrogen generation while NiO collects holes to selectively oxidize glycerol into value-added chemicals. The results showed that by loading 5% nickel into the heterojunction caused a remarkable rise in the generation of hydrogen (H2). The combination of NiO-TiO2 created 4000 µmolh-1g-1 of H2, which is 50% greater than the H2 production from pure nanosheet TiO2 and 63 times more than the H2 production from commercial nanopowder TiO2. Then, by changing loading amount of Ni, it is found that when 7.5 % of Ni is loaded the highest amount of hydrogen production achieved, 8000 µmolh-1g-1. By employing best sample (S3), 20 % of glycerol converted to value added products, glyceraldehyde and dihydroxyacetone. The feasibility study revealed that glyceraldehyde generates the largest portion of yearly earnings at 89%, while dihydroxyacetone and H2 account for 11% and 0.03% of the annual revenue, respectively. This work provides a good example to simultaneously produce green hydrogen and valuable chemicals with the rational design of dually functional photocatalyst.
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Affiliation(s)
- Mehdi Eisapour
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta T2N 1N4, Canada
| | - Heng Zhao
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta T2N 1N4, Canada.
| | - Jun Zhao
- Peking University Institute of Advanced Agricultural Sciences, Shandong Laboratory of Advanced Agricultural Sciences in Weifang, Shandong 261325, China
| | - Tayebeh Roostaei
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta T2N 1N4, Canada
| | - Zheng Li
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta T2N 1N4, Canada
| | - Ali Omidkar
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta T2N 1N4, Canada
| | - Jinguang Hu
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta T2N 1N4, Canada.
| | - Zhangxin Chen
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta T2N 1N4, Canada; Eastern Institute for Advanced Study, Ningbo, Zhengjiang 315200, China.
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Xia L, Lu Y, Li YZ, Hu ZY, Yang XY. TiO2-rGO-Cu complex: A photocatalyst possessing an interfacial electron transport mechanism to enhance hydrogen production from seawater. Chem Phys Lett 2023. [DOI: 10.1016/j.cplett.2023.140498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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Wang W, Zhang L, Kang Y, Yang X, Ge S, Yu F. Experimental and density functional study of the light-assisted gas-sensing performance of a TiO 2-CoFe 2O 4 heterojunction. Dalton Trans 2023; 52:4911-4922. [PMID: 36946472 DOI: 10.1039/d2dt04051d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Abstract
Toluene gas as a solvent is widely present in industrial production and indoor decoration, and can seriously harm human health even at low concentrations. Furthermore, toluene can be used as a typical biomarker for disease diagnosis. Therefore, the detection of toluene gas is very important. Herein, a hydrothermal method was used to successfully prepare a TiO2-CoFe2O4 heterostructure for detecting toluene gas. The ultraviolet (UV)-visible diffuse reflectance spectra and photoluminescence spectra showed that the bandgap of the heterojunction was considerably shorter than those of pure TiO2 and CoFe2O4, and the recombination of electron-hole pairs was inhibited. At the same time, the response value of the TiO2-CoFe2O4 heterojunction was 10.5 for 20 ppm toluene at 219 °C, which was much better than those of pure TiO2 and CoFe2O4. Moreover, its response value further increased under UV irradiation. In addition, density functional theory (DFT) was innovatively employed in this study to explain in detail how the heterojunction and UV irradiation can improve gas sensitivity through the calculation of the material energy band, adsorption energy, etc. This work provides a good reference for the preparation of high-efficiency and high-sensitivity gas sensors.
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Affiliation(s)
- Wenhao Wang
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, P.R. China.
| | - Lu Zhang
- Institute of Materia Medica, Xinjiang University, Urumqi 830017, China.
| | - Yanli Kang
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, P.R. China.
| | - Xiaodong Yang
- Key Laboratory of Ecophysics and Department of Physics, College of Science, Shihezi University, Xinjiang 832003, P.R. China.
| | - Shenguang Ge
- Institute for Advanced Interdisciplinary Research, University of Jinan, Jinan 250022, P.R. China
| | - Feng Yu
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, P.R. China.
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Ren Y, Huo J, Zhang X, Guo S. PPy-derived carbon nanoparticles anchored on TiO2/C nanofibers as sodium-ion battery anodes with ultra-long cycle stability. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Graphite foam as carbon-based footprint for in-situ fabrication of Ti3+-doped titanium niobium oxide (Ti2Nb10O29) nanocrystal for high-rate performance lithium-ion batteries. J Colloid Interface Sci 2022. [DOI: 10.1016/j.jcis.2022.05.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Wu SM, Wang YT, Xiao ST, Wang LY, Tian G, Chen JB, Liu JW, Shalom M, Yang XY. A spatial homojunction of titanium vacancies decorated with oxygen vacancies in TiO 2 and its directed charge transfer. NANOSCALE 2022; 14:13373-13377. [PMID: 36069354 DOI: 10.1039/d2nr03877c] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The n-p homojunction design in semiconductors could enable directed charge transfer, which is promising but rarely reported. Herein, TiO2 with a spatial n-p homojunction has been designed by decorating TiO2 nanosheets with Ti vacancies around nanostructured TiO2 with O vacancies. 2D 1H TQ-SQ MAS NMR, EPR and XPS show the junction of titanium vacancies and oxygen vacancies at the interface. This spatial homojunction contributes to a significant enhancement in photoelectrochemical and photocatalytic performance, especially photocatalytic seawater splitting. Density functional theory calculations of the charge density reveal the directional n-p charge transfer path at the interface, which is proposed at the atomic-/nanoscale to clarify the generation of rational junctions. The spatial n-p homojunction provides a facile strategy for the design of high-performance semiconductors.
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Affiliation(s)
- Si-Ming Wu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of Materials Science and Engineering & Shenzhen Research Institute & Joint Laboratory for Marine Advanced Materials in National Laboratory for Marine Science and Technology (Qingdao), Wuhan University of Technology, Wuhan, 430070, China.
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA.
| | - Yi-Tian Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of Materials Science and Engineering & Shenzhen Research Institute & Joint Laboratory for Marine Advanced Materials in National Laboratory for Marine Science and Technology (Qingdao), Wuhan University of Technology, Wuhan, 430070, China.
| | - Shi-Tian Xiao
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of Materials Science and Engineering & Shenzhen Research Institute & Joint Laboratory for Marine Advanced Materials in National Laboratory for Marine Science and Technology (Qingdao), Wuhan University of Technology, Wuhan, 430070, China.
| | - Li-Ying Wang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Ge Tian
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of Materials Science and Engineering & Shenzhen Research Institute & Joint Laboratory for Marine Advanced Materials in National Laboratory for Marine Science and Technology (Qingdao), Wuhan University of Technology, Wuhan, 430070, China.
| | - Jiang-Bo Chen
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of Materials Science and Engineering & Shenzhen Research Institute & Joint Laboratory for Marine Advanced Materials in National Laboratory for Marine Science and Technology (Qingdao), Wuhan University of Technology, Wuhan, 430070, China.
| | - Jia-Wen Liu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of Materials Science and Engineering & Shenzhen Research Institute & Joint Laboratory for Marine Advanced Materials in National Laboratory for Marine Science and Technology (Qingdao), Wuhan University of Technology, Wuhan, 430070, China.
| | - Menny Shalom
- Department of Chemistry and Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Xiao-Yu Yang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of Materials Science and Engineering & Shenzhen Research Institute & Joint Laboratory for Marine Advanced Materials in National Laboratory for Marine Science and Technology (Qingdao), Wuhan University of Technology, Wuhan, 430070, China.
- School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA.
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Jia M, Shen L, Tian G, Córdoba de Torresi SI, Symes MD, Yang XY. Superior Electrocatalysis Delivered by a Directional Electron Transfer Cascade in Hierarchical CoNi/Ru@C. Chem Asian J 2022; 17:e202200449. [PMID: 35758841 DOI: 10.1002/asia.202200449] [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: 04/28/2022] [Revised: 06/02/2022] [Indexed: 11/07/2022]
Abstract
Exploiting directional electron transfer cascades could lead to high-performance electrocatalysts for processes such as the hydrogen evolution reaction, but realising such systems is difficult. Herein, a hierarchical confined material (CoNi/Ru@C) is presented, which provides a suitable spatial junction to enable directional electron transfer, giving superior hydrogen evolution in alkaline water/seawater.
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Affiliation(s)
- Mingpu Jia
- Wuhan University of Technology, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & International School of Materials Science and Engineering & School of Materials Science and Engineering & Shenzhen Research Institute & Joint Laboratory for Marine Advanced Materials in Pilot National Laboratory for Marine Science and Technology (Qingdao), CHINA
| | - Ling Shen
- Wuhan University of Technology, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & International School of Materials Science and Engineering & School of Materials Science and Engineering & Shenzhen Research Institute & Joint Laboratory for Marine Advanced Materials in Pilot National Laboratory for Marine Science and Technology (Qingdao), CHINA
| | - Ge Tian
- Wuhan University of Technology, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & International School of Materials Science and Engineering & School of Materials Science and Engineering & Shenzhen Research Institute & Joint Laboratory for Marine Advanced Materials in Pilot National Laboratory for Marine Science and Technology (Qingdao), CHINA
| | | | - Mark D Symes
- University of Glasgow, WestCHEM School of Chemistry, UNITED KINGDOM
| | - Xiao-Yu Yang
- Wuhan University of Technology, 122, Luoshi Road, 430070, Wuhan, CHINA
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9
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Feng C, Lu Y, Liu Y, Yang X, Tian G. A facile synthesis of hierarchically porous graphene for high-performance lithium storage. NEW J CHEM 2022. [DOI: 10.1039/d2nj02047e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hierarchically porous graphene with macro-mesopores is highly desired for enhancing lithium storage.
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Affiliation(s)
- Chenming Feng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & Shenzhen Research Institute & Joint Laboratory for Marine Advanced Materials in Pilot National Laboratory for Marine Science and Technology (Qingdao), Wuhan University of Technology, Wuhan, 430070, China
| | - Yi Lu
- Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, Düsseldorf 40225, Germany
| | - Yixuan Liu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & Shenzhen Research Institute & Joint Laboratory for Marine Advanced Materials in Pilot National Laboratory for Marine Science and Technology (Qingdao), Wuhan University of Technology, Wuhan, 430070, China
| | - Xiaoyu Yang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & Shenzhen Research Institute & Joint Laboratory for Marine Advanced Materials in Pilot National Laboratory for Marine Science and Technology (Qingdao), Wuhan University of Technology, Wuhan, 430070, China
| | - Ge Tian
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & Shenzhen Research Institute & Joint Laboratory for Marine Advanced Materials in Pilot National Laboratory for Marine Science and Technology (Qingdao), Wuhan University of Technology, Wuhan, 430070, China
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10
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Modified TiO2-rGO Binary Photo-Degradation Nanomaterials: Modification, Mechanism, and Perspective. CATALYSIS SURVEYS FROM ASIA 2021. [DOI: 10.1007/s10563-021-09349-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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11
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Cheng X, Lu Y, Liu YX, Tian G, Yang XY. One-pot synthesis of hierarchical CdS/MoS2/rGO with enhanced (photo)electrocatalytic activities. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.138047] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Lu J, Chen Q, Chen S, Jiang H, Liu Y, Chen R. Pd Nanoparticles Loaded on Ceramic Membranes by Atomic Layer Deposition with Enhanced Catalytic Properties. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c04158] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Jia Lu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, Jiangsu 210009, P. R. China
| | - Qingqing Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, Jiangsu 210009, P. R. China
| | - Sibai Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, Jiangsu 210009, P. R. China
| | - Hong Jiang
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, Jiangsu 210009, P. R. China
| | - Yefei Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, Jiangsu 210009, P. R. China
| | - Rizhi Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, Jiangsu 210009, P. R. China
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Ai M, Zhang J, Wu Y, Pan L, Shi C, Zou J. Role of Vacancies in Photocatalysis: A Review of Recent Progress. Chem Asian J 2020; 15:3599-3619. [DOI: 10.1002/asia.202000889] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 09/13/2020] [Indexed: 12/13/2022]
Affiliation(s)
- Minhua Ai
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 P. R. China
| | - Jing‐Wen Zhang
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 P. R. China
| | - Yi‐Wei Wu
- Department of Environmental Engineering, School of Environment Northeast Normal University Changchun 130117 P. R. China
| | - Lun Pan
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 P. R. China
| | - Chengxiang Shi
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 P. R. China
| | - Ji‐Jun Zou
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin) Tianjin 300072 P. R. China
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Lu Y, Liu XL, He L, Zhang YX, Hu ZY, Tian G, Cheng X, Wu SM, Li YZ, Yang XH, Wang LY, Liu JW, Janiak C, Chang GG, Li WH, Van Tendeloo G, Yang XY, Su BL. Spatial Heterojunction in Nanostructured TiO 2 and Its Cascade Effect for Efficient Photocatalysis. NANO LETTERS 2020; 20:3122-3129. [PMID: 32343586 DOI: 10.1021/acs.nanolett.9b05121] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A highly efficient photoenergy conversion is strongly dependent on the cumulative cascade efficiency of the photogenerated carriers. Spatial heterojunctions are critical to directed charge transfer and, thus, attractive but still a challenge. Here, a spatially ternary titanium-defected TiO2@carbon quantum dots@reduced graphene oxide (denoted as VTi@CQDs@rGO) in one system is shown to demonstrate a cascade effect of charges and significant performances regarding the photocurrent, the apparent quantum yield, and photocatalysis such as H2 production from water splitting and CO2 reduction. A key aspect in the construction is the technologically irrational junction of Ti-vacancies and nanocarbons for the spatially inside-out heterojunction. The new "spatial heterojunctions" concept, characteristics, mechanism, and extension are proposed at an atomic-/nanoscale to clarify the generation of rational heterojunctions as well as the cascade electron transfer.
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Affiliation(s)
- Yi Lu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of materials science and engineering & School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) & School of Chemical Engineering and Technology, School of Materials, Sun Yat-sen University, Zhuhai 519000, China
| | - Xiao-Long Liu
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) & School of Chemical Engineering and Technology, School of Materials, Sun Yat-sen University, Zhuhai 519000, China
| | - Li He
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of materials science and engineering & School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
| | - Yue-Xing Zhang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China
| | - Zhi-Yi Hu
- Nanostructure Research Centre, Wuhan University of Technology, Wuhan 430070, China
- Electron Microscopy for Materials Science, University of Antwerp, Antwerpen B-2020, Belgium
| | - Ge Tian
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of materials science and engineering & School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
| | - Xiu Cheng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of materials science and engineering & School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
| | - Si-Ming Wu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of materials science and engineering & School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) & School of Chemical Engineering and Technology, School of Materials, Sun Yat-sen University, Zhuhai 519000, China
| | - Yuan-Zhou Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of materials science and engineering & School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
| | - Xiao-Hang Yang
- College of Chemistry, Jilin University, Changchun, 130023, China
| | - Li-Ying Wang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, The Chinese Academy of Sciences, Wuhan 430071, China
| | - Jia-Wen Liu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of materials science and engineering & School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
| | - Christoph Janiak
- Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, Düsseldorf 40204, Germany
| | - Gang-Gang Chang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of materials science and engineering & School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
| | - Wei-Hua Li
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) & School of Chemical Engineering and Technology, School of Materials, Sun Yat-sen University, Zhuhai 519000, China
| | - Gustaaf Van Tendeloo
- Nanostructure Research Centre, Wuhan University of Technology, Wuhan 430070, China
- Electron Microscopy for Materials Science, University of Antwerp, Antwerpen B-2020, Belgium
| | - Xiao-Yu Yang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of materials science and engineering & School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) & School of Chemical Engineering and Technology, School of Materials, Sun Yat-sen University, Zhuhai 519000, China
- School of Engineering and Applied Sciences, Harvard University, Cambridge 02138, Massachusetts, United States
| | - Bao-Lian Su
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of materials science and engineering & School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
- Laboratory of Inorganic Materials Chemistry, University of Namur, Namur B-5000, Belgium
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