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Han Z, Chang Y, Gao J, Liu T, Li J, Liu J, Liu J, Gao Y, Gao J. Microfluidic Continuous Synthesis of Size- and Facet-Controlled Porous Bi 2O 3 Nanospheres for Efficient CO 2 to Formate Catalysis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2403778. [PMID: 38948957 DOI: 10.1002/smll.202403778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 06/21/2024] [Indexed: 07/02/2024]
Abstract
Bismuth-based catalysts are effective in converting carbon dioxide into formate via electrocatalysis. Precise control of the morphology, size, and facets of bismuth-based catalysts is crucial for achieving high selectivity and activity. In this work, an efficient, large-scale continuous production strategy is developed for achieving a porous nanospheres Bi2O3-FDCA material. First-principles simulations conducted in advance indicate that the Bi2O3 (111)/(200) facets help reduce the overpotential for formate production in electrocatalytic carbon dioxide reduction reaction (ECO2RR). Subsequently, using microfluidic technology and molecular control to precisely adjust the amount of 2, 5-furandicarboxylic acid, nanomaterials rich in (111)/(200) facets are successfully synthesized. Additionally, the morphology of the porous nanospheres significantly increases the adsorption capacity and active sites for carbon dioxide. These synergistic effects allow the porous Bi2O3-FDCA nanospheres to stably operate for 90 h in a flow cell at a current density of ≈250 mA cm- 2, with an average Faradaic efficiency for formate exceeding 90%. The approach of theoretically guided microfluidic technology for the large-scale synthesis of finely structured, efficient bismuth-based materials for ECO2RR may provide valuable references for the chemical engineering of intelligent nanocatalysts.
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Affiliation(s)
- Zhenze Han
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Yuan Chang
- Laboratory of Materials Modification by Laser, Ion and Electron Beams, Ministry of Education, Dalian University of Technology, Dalian, 116024, China
| | - Jiaxuan Gao
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Taolue Liu
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Jialuo Li
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Jinxuan Liu
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Jiaxu Liu
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Yan Gao
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Junfeng Gao
- Laboratory of Materials Modification by Laser, Ion and Electron Beams, Ministry of Education, Dalian University of Technology, Dalian, 116024, China
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Meng Z, Ma Y, Chen B, Li Y, Ma H, Zhu B, Dong F. One-step in-situ construction engineering of ZnO-Zn 2SnO 4 heterojunction for deeply photocatalytic oxidation of nitric oxide. J Colloid Interface Sci 2024; 664:433-443. [PMID: 38484512 DOI: 10.1016/j.jcis.2024.02.203] [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: 12/03/2023] [Revised: 02/27/2024] [Accepted: 02/27/2024] [Indexed: 04/07/2024]
Abstract
The generation of hazardous intermediates during the process of photocatalytic nitric oxide (NO) oxidation presents a tough issue. Herein, a one-step microwave strategy was employed to introduce oxygen vacancies (OVs) into zinc oxide-zinc stannate (ZnO-Zn2SnO4) heterojunction, resulting in an improvement in the photocatalytic efficiency for NO removal. The construction ZnO-Zn2SnO4 heterojunction with the OVs (ZSO-3) owns a significant contribution towards highly efficient electron transfer efficiency (99.7%), which renders ZSO-3 to exert a deep oxidation of NO-to-nitrate (NO3-) rather than NO-to-nitrite (NO2-) or NO-to-nitrogen dioxide (NO2). Based on the solid supports of experimental and simulated calculations, it can be found that OVs play an irreplaceable role in activating small molecules such as NO and O2. Moreover, the enhanced adsorption capacity of small molecules, which guarantees the high yield of active radical due to the formation of S-scheme heterojunction. This work illuminates a novel viewpoint on one-step in-situ route to prepare Zn2SnO4-based heterojunction photocatalyst with deep oxidation ability of NO-to-NO3-.
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Affiliation(s)
- Zeyong Meng
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China
| | - Yifan Ma
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China
| | - Bangfu Chen
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China
| | - Yuhan Li
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China; South China University of Technology, School of Materials Science and Engineering, Guangzhou, 510641, China.
| | - Hao Ma
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China.
| | - Bicheng Zhu
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 68 Jincheng Street, Wuhan, 430078, China.
| | - Fan Dong
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China
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3
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Guo P, Yin F, Zhang J, Chen B, Ni Z, Shi L, Han M, Wu Z, Li G. Crystal-Phase and Surface-Structure Engineering of Bi 2O 3 for Enhanced Electrochemical N 2 Fixation to NH 3. ACS APPLIED MATERIALS & INTERFACES 2024; 16:17540-17552. [PMID: 38551895 DOI: 10.1021/acsami.4c00162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
The nitrogen reduction reaction (NRR) for ammonia synthesis is hindered by weak N2 adsorption/activation abilities and the hydrogen evolution reaction (HER). In this study, αBi2O3 (monoclinic) and βBi2O3 (tetragonal) were first synthesized by calcination at different temperatures. Experiments and calculations revealed the effects of Bi2O3 with different crystal phases on N2 adsorption/activation abilities and HER. Then, αBi2O3-x and βBi2O3-x series catalysts with surface oxygen vacancies (OVs) and Bi0 active sites were synthesized through the partial in situ reduction method. The results demonstrate the following: (I) Tetragonal βBi2O3 can better adsorb N2 and cleave the N≡N bond, thereby obtaining a lower NRR rate-limiting energy barrier (*N≡N → *N≡N-H, 0.51 eV). Meanwhile, βBi2O3 can effectively suppress HER by limiting proton adsorption (H+ + e- → *H, 0.54 eV). Therefore, βBi2O3-x series catalysts exhibit higher NH3 yield and FE than αBi2O3-x. Meanwhile, in situ FTIR further confirms that βBi2O3 could better adsorb/activate N2, and the NRR distal mechanism occurs on the Bi2O3 surface. (II) The introduction of NaBH4 promotes the conversion of part of Bi3+ on the Bi2O3 surface into Bi0 and releases OVs. The additional active sites (OVs and Bi0) enhance the overall catalyst's adsorption/activation capacity for N2, further increasing the NH3 yield and FE. Meanwhile, semimetal Bi0 can effectively limit electron accessibility, thereby inhibiting the combination of charges and adsorbed protons, reducing the HER reaction and improving the FE of NRR. Therefore, the introduction of NaBH4 effectively improved the NH3 yield and FE of the αBi2O3-x and βBi2O3-x series catalysts. After optimization, the βBi2O3-0.6 catalyst has the best NRR performance (NH3 yield: 51.36 μg h-1 mg-1cat.; FE: 38.67%), which is superior to the majority of bismuth-based NRR catalysts. This work not only studies the effects of Bi2O3 with different crystal phases on N2 and HER reaction but also effectively regulates the active components of Bi2O3 surface, thereby realizing efficient NRR to NH3 reaction, which provide valuable insights for the rational design of Bi-based NRR electrocatalysts.
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Affiliation(s)
- Pengju Guo
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Fengxiang Yin
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
- Jiangsu Province Engineering Research Center of Intelligent Manufacturing Technology for the New Energy Vehicle Power Battery, Changzhou University, Changzhou 213164, China
| | - Jie Zhang
- Jiangsu Province Engineering Research Center of Intelligent Manufacturing Technology for the New Energy Vehicle Power Battery, Changzhou University, Changzhou 213164, China
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Biaohua Chen
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Ziyang Ni
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Liuliu Shi
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Mengyan Han
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Zumai Wu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Guoru Li
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
- Jiangsu Province Engineering Research Center of Intelligent Manufacturing Technology for the New Energy Vehicle Power Battery, Changzhou University, Changzhou 213164, China
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Zhang C, Hao X, Wang J, Ding X, Zhong Y, Jiang Y, Wu MC, Long R, Gong W, Liang C, Cai W, Low J, Xiong Y. Concentrated Formic Acid from CO 2 Electrolysis for Directly Driving Fuel Cell. Angew Chem Int Ed Engl 2024; 63:e202317628. [PMID: 38305482 DOI: 10.1002/anie.202317628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Revised: 02/01/2024] [Accepted: 02/02/2024] [Indexed: 02/03/2024]
Abstract
The production of formic acid via electrochemical CO2 reduction may serve as a key link for the carbon cycle in the formic acid economy, yet its practical feasibility is largely limited by the quantity and concentration of the product. Here we demonstrate continuous electrochemical CO2 reduction for formic acid production at 2 M at an industrial-level current densities (i.e., 200 mA cm-2 ) for 300 h on membrane electrode assembly using scalable lattice-distorted bismuth catalysts. The optimized catalysts also enable a Faradaic efficiency for formate of 94.2 % and a highest partial formate current density of 1.16 A cm-2 , reaching a production rate of 21.7 mmol cm-2 h-1 . To assess the practicality of this system, we perform a comprehensive techno-economic analysis and life cycle assessment, showing that our approach can potentially substitute conventional methyl formate hydrolysis for industrial formic acid production. Furthermore, the resultant formic acid serves as direct fuel for air-breathing formic acid fuel cells, boasting a power density of 55 mW cm-2 and an exceptional thermal efficiency of 20.1 %.
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Affiliation(s)
- Chao Zhang
- Hefei National Research Center for Physical Sciences at the Microscale, School of Chemistry and Materials Science, and National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, China
- Suzhou Institute for Advanced Research, University of Science and Technology of China, Suzhou, Jiangsu, 215123, China
| | - Xiaobin Hao
- Hefei National Research Center for Physical Sciences at the Microscale, School of Chemistry and Materials Science, and National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Jiatang Wang
- Sustainable Energy Laboratory, Faculty of Materials Science and Chemistry, China University of Geosciences Wuhan, 388 Lumo Road, Wuhan, Hubei, 430074, China
| | - Xiayu Ding
- Hefei National Research Center for Physical Sciences at the Microscale, School of Chemistry and Materials Science, and National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Yuan Zhong
- Hefei National Research Center for Physical Sciences at the Microscale, School of Chemistry and Materials Science, and National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Yawen Jiang
- Hefei National Research Center for Physical Sciences at the Microscale, School of Chemistry and Materials Science, and National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Ming-Chung Wu
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan, 33302, Taiwan
| | - Ran Long
- Hefei National Research Center for Physical Sciences at the Microscale, School of Chemistry and Materials Science, and National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Wanbing Gong
- Hefei National Research Center for Physical Sciences at the Microscale, School of Chemistry and Materials Science, and National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Changhao Liang
- Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, Anhui, 230031, China
| | - Weiwei Cai
- Sustainable Energy Laboratory, Faculty of Materials Science and Chemistry, China University of Geosciences Wuhan, 388 Lumo Road, Wuhan, Hubei, 430074, China
| | - Jingxiang Low
- Hefei National Research Center for Physical Sciences at the Microscale, School of Chemistry and Materials Science, and National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Yujie Xiong
- Hefei National Research Center for Physical Sciences at the Microscale, School of Chemistry and Materials Science, and National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, China
- Suzhou Institute for Advanced Research, University of Science and Technology of China, Suzhou, Jiangsu, 215123, China
- Anhui Engineering Research Center of Carbon Neutrality, The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui, 241002, China
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5
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Li F, Liu G, Liu F, Yang S. A review of self-cleaning photocatalytic surface: Effect of surface characteristics on photocatalytic activity for NO. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 327:121580. [PMID: 37023887 DOI: 10.1016/j.envpol.2023.121580] [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: 10/27/2022] [Revised: 03/19/2023] [Accepted: 04/03/2023] [Indexed: 06/19/2023]
Abstract
Self-cleaning surface has attracted much attention in the field of photocatalytic degradation of NO due to its dirt pickup resistance and self-cleaning effect under the action of rainwater. In this review, the factors affecting NO degradation efficiency were analyzed in terms of photocatalyst characteristics and environmental conditions combined with the photocatalytic degradation mechanism. The feasibility of photocatalytic degradation of NO on superhydrophilic, superhydrophobic and superamphiphobic surfaces was discussed. Furthermore, the effect of special surface characteristics of self-cleaning on photocatalytic NO was highlighted and the improvement of the long-term effect using three self-cleaning surfaces on photocatalytic NO was evaluated and summarized. Finally, the conclusion and outlook were proposed related to the self-cleaning surface for photocatalytic degradation of NO. In future research, the comprehensive effects of the characteristics of photocatalytic materials, self-cleaning characteristics and environmental factors on the photocatalytic degradation of NO and the actual application effects of such self-cleaning photocatalytic surfaces should be further clarified in combination with the engineering. It is believed that this review can provide some theoretical basis and support for the development of self-cleaning surfaces in the field of photocatalytic degradation of NO.
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Affiliation(s)
- Fen Li
- College of Chemistry & Materials Science, Hebei University, Baoding, 071002, China
| | - Guanyu Liu
- College of Civil Engineering and Architecture, Hebei University, Baoding, China; Technology Innovation Center for Testing and Evaluation in Civil Engineering of Hebei Province, Baoding, China.
| | - Fuqiang Liu
- College of Civil Engineering and Architecture, Hebei University, Baoding, China; Technology Innovation Center for Testing and Evaluation in Civil Engineering of Hebei Province, Baoding, China
| | - Sanqiang Yang
- College of Civil Engineering and Architecture, Hebei University, Baoding, China; Technology Innovation Center for Testing and Evaluation in Civil Engineering of Hebei Province, Baoding, China
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6
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Wang J, Liu Z, Kong B, An X, Zhang M, Wang W. Intrinsic point defects and the n- and p-type dopability in α- and β-Bi 2O 3 photocatalysts. Phys Chem Chem Phys 2023; 25:14417-14429. [PMID: 37184404 DOI: 10.1039/d3cp00738c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
In this work, all kinds of intrinsic point defects, unintentional N and H impurities and possible complex defects between impurities and native defects in α- and β-Bi2O3 with different growth conditions are systematically investigated using hybrid density functional calculations. And then, the n- or p-type doping mechanisms in α- and β-Bi2O3 are explored and discussed. It is found that α-Bi2O3 presents the n-type conductivity under O-poor conditions. The unintentional H interstitials as the shallow donors should be majorly responsible for the n-type conductivity character. While under O-rich conditions, α-Bi2O3 displays the p-type conductivity, and the unintentional complex defects VBi1 + 2H as the shallow acceptors should be the primary origins of the p-type conductivity. The hydrogenation of the Bi vacancy in α-Bi2O3 not only significantly lowers the formation energy of the Bi vacancy but also markedly decreases its acceptor transition level. This well explains the experimental observation that α-Bi2O3 changes from n-type to p-type conductivity with increasing O partial pressure. Compared to α-Bi2O3, β-Bi2O3 always presents the n-type conductivity behaviour regardless of the growth conditions. The native O1 vacancies (VO1) and unintentional H interstitials in β-Bi2O3 are shallow and excellent donors. They are responsible for the n-type conductivity and further perfectly explain the observed unintentional n-type conductivity character in β-Bi2O3 experiments. Understanding the defect physics in α- and β-Bi2O3 could inspire more significant studies on developing Bi2O3-based photocatalysts.
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Affiliation(s)
- Jincheng Wang
- School of Physics and Astronomy, China West Normal University, Nanchong 637002, China.
| | - Zuoyin Liu
- School of Physics and Astronomy, China West Normal University, Nanchong 637002, China.
| | - Bo Kong
- School of Physics and Astronomy, China West Normal University, Nanchong 637002, China.
| | - Xinyou An
- School of Physics and Astronomy, China West Normal University, Nanchong 637002, China.
| | - Min Zhang
- School of Physics and Astronomy, China West Normal University, Nanchong 637002, China.
| | - Wentao Wang
- Guizhou Provincial Key Laboratory of Computational Nano-Material Science, Guizhou, China.
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7
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Lv L, Yang HD, Chen QW, Fan H, Zhou JP. La 2Ti 2O 7 nanosheets modified by Pt quantum dots for efficient NO removal avoiding NO 2 secondary pollutant. ENVIRONMENTAL RESEARCH 2023; 223:115441. [PMID: 36758917 DOI: 10.1016/j.envres.2023.115441] [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: 11/14/2022] [Revised: 02/02/2023] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
Two-dimensional La2Ti2O7 nanosheets with regular morphology and good dispersion were prepared by the hydrothermal method under a magnetic field. Zero-dimensional Pt quantum dots (Pt-QDs) were loaded on the La2Ti2O7 nanosheets. The electron-hole separation and carrier transfer in the Pt-loaded La2Ti2O7 nanosheets were significantly enhanced. The La2Ti2O7 nanosheets loaded with 3 wt% Pt-QDs exhibit the largest NO removal efficiency of 51% and less than 3.2 ppb NO2 intermediate pollutant in 30 min. The high photocatalytic ability was attributed to the surface plasmon resonance in Pt-QDs and the enhanced electron-hole separation. A large number of e-, h+, •OH and •O2- active species were formed on the surface of Pt-loaded La2Ti2O7 nanosheets under light irradiation. The conversion pathway from NO to NO3- was verified by the in situ diffuse reflectance infrared Fourier-transform spectroscopy and DFT calculation. This work supplies a feasible approach to responsive photocatalysts for efficient, stable, and selective NO removal avoiding the NO2 secondary pollutant.
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Affiliation(s)
- Li Lv
- State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, 710072, People's Republic of China; School of Physics and Information Technology, Shaanxi Normal University, Xi'an, 710119, People's Republic of China
| | - Hong-Dan Yang
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an, 710119, People's Republic of China
| | - Qi-Wen Chen
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an, 710119, People's Republic of China
| | - Huiqing Fan
- State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, 710072, People's Republic of China.
| | - Jian-Ping Zhou
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an, 710119, People's Republic of China.
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Shi M, Yang H, Zhao Z, Ren G, Meng X. Bismuth-based semiconductors applied in photocatalytic reduction processes: fundamentals, advances and future perspectives. Chem Commun (Camb) 2023; 59:4274-4287. [PMID: 36942529 DOI: 10.1039/d3cc00580a] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
Bismuth-based semiconductors (BBSs) with their typical layered structures and unique electronic properties are considered an attractive visible light-responsive photocatalysts. Recently, BBS exhibited promising properties and was rapidly developed in photoreduction reactions. In this review, we firstly focus on the photoreduction reactions of BBS with a description of the basic principles. Specifically, the restrictive factors of the photoreduction reactions and the design directions of the catalysts are addressed. BBS photocatalysts, such as bismuth oxide, bismuth halide oxide and bismuth-based oxygenates, are presented in terms of the catalyst material design, crystal structure and other features. Furthermore, the primary applications of BBS in photoreduction reactions are described, including CO2 reduction, N2 reduction, H2 evolution, and nitrate reduction. Additionally, the advances and shortages of BBS applied in these processes are summarized and comprehensively discussed. Future works for BBS applied in photoreduction processes are also proposed.
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Affiliation(s)
- Meng Shi
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
| | - Huiying Yang
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
| | - Zehui Zhao
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
| | - Guangmin Ren
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
| | - Xiangchao Meng
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
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9
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Wang J, Ni G, Liao W, Liu K, Chen J, Liu F, Zhang Z, Jia M, Li J, Fu J, Pensa E, Jiang L, Bian Z, Cortés E, Liu M. Subsurface Engineering Induced Fermi Level De-pinning in Metal Oxide Semiconductors for Photoelectrochemical Water Splitting. Angew Chem Int Ed Engl 2023; 62:e202217026. [PMID: 36577697 DOI: 10.1002/anie.202217026] [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: 11/20/2022] [Revised: 12/21/2022] [Accepted: 12/27/2022] [Indexed: 12/30/2022]
Abstract
Photoelectrochemical (PEC) water splitting is a promising approach for renewable solar light conversion. However, surface Fermi level pinning (FLP), caused by surface trap states, severely restricts the PEC activities. Theoretical calculations indicate subsurface oxygen vacancy (sub-Ov ) could release the FLP and retain the active structure. A series of metal oxide semiconductors with sub-Ov were prepared through precisely regulated spin-coating and calcination. Etching X-ray photoelectron spectroscopy (XPS), scanning transmission electron microscopy (STEM), and electron energy loss spectra (EELS) demonstrated Ov located at sub ∼2-5 nm region. Mott-Schottky and open circuit photovoltage results confirmed the surface trap states elimination and Fermi level de-pinning. Thus, superior PEC performances of 5.1, 3.4, and 2.1 mA cm-2 at 1.23 V vs. RHE were achieved on BiVO4 , Bi2 O3 , TiO2 with outstanding stability for 72 h, outperforming most reported works under the identical conditions.
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Affiliation(s)
- Jun Wang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, P.R. China.,Hunan Joint International Research Center for Carbon Dioxide Resource Utilization, State Key Laboratory of Powder Metallurgy, School of Physics and Electronics, Central South University, Changsha, 410083, Hunan, P.R. China
| | - Ganghai Ni
- Hunan Joint International Research Center for Carbon Dioxide Resource Utilization, State Key Laboratory of Powder Metallurgy, School of Physics and Electronics, Central South University, Changsha, 410083, Hunan, P.R. China
| | - Wanru Liao
- Hunan Joint International Research Center for Carbon Dioxide Resource Utilization, State Key Laboratory of Powder Metallurgy, School of Physics and Electronics, Central South University, Changsha, 410083, Hunan, P.R. China
| | - Kang Liu
- Hunan Joint International Research Center for Carbon Dioxide Resource Utilization, State Key Laboratory of Powder Metallurgy, School of Physics and Electronics, Central South University, Changsha, 410083, Hunan, P.R. China
| | - Jiawei Chen
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, P.R. China
| | - Fangyang Liu
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, P.R. China
| | - Zongliang Zhang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, P.R. China
| | - Ming Jia
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, P.R. China
| | - Jie Li
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, P.R. China
| | - Junwei Fu
- Hunan Joint International Research Center for Carbon Dioxide Resource Utilization, State Key Laboratory of Powder Metallurgy, School of Physics and Electronics, Central South University, Changsha, 410083, Hunan, P.R. China
| | - Evangelina Pensa
- Nanoinstitut München, Fakultät für Physik, Ludwig-Maximilians-Universität München, 80539, München, Germany
| | - Liangxing Jiang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, P.R. China.,Hunan Provincial Key Laboratory of Nonferrous Value-added Metallurgy, Changsha, 410083, Hunan, P.R. China
| | - Zhenfeng Bian
- MOE Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, 200234, P.R. China
| | - Emiliano Cortés
- Nanoinstitut München, Fakultät für Physik, Ludwig-Maximilians-Universität München, 80539, München, Germany
| | - Min Liu
- Hunan Joint International Research Center for Carbon Dioxide Resource Utilization, State Key Laboratory of Powder Metallurgy, School of Physics and Electronics, Central South University, Changsha, 410083, Hunan, P.R. China
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10
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Zhu B, Dong Q, Huang J, Song D, Chen L, Chen Q, Zhai C, Wang B, Klemeš JJ, Tao H. Visible-light driven p-n heterojunction formed between α-Bi 2O 3 and Bi 2O 2CO 3 for efficient photocatalytic degradation of tetracycline. RSC Adv 2023; 13:1594-1605. [PMID: 36688072 PMCID: PMC9827591 DOI: 10.1039/d2ra08162h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 12/26/2022] [Indexed: 01/11/2023] Open
Abstract
To improve the efficiency of photocatalytic oxidative degradation of antibiotic pollutants, it is essential to develop an efficient and stable photocatalyst. In this study, a polymer-assisted facile synthesis strategy is proposed for the polymorph-controlled α-Bi2O3/Bi2O2CO3 heterojunction retained at elevated calcination temperatures. The p-n heterojunction can effectively separate and migrate electron-hole pairs, which improves visible-light-driven photocatalytic degradation from tetracycline (TC). The BO-400@PAN-140 photocatalyst achieves the highest pollutant removal efficiency of 98.21% for photocatalytic tetracycline degradation in 1 h (λ > 420 nm), and the degradation efficiency was maintained above 95% after 5 cycles. The morphology, crystal structure, and chemical state of the composites were analysed by scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. Ultraviolet-visible diffuse reflection, transient photocurrent response, and electrochemical impedance spectroscopy were adopted to identify the charge transfer and separation efficiency of photogenerated electron-hole pairs. The EPR results verified h+ and ˙OH radicals as the primary active species in the photocatalytic oxidation reactions. This observation was also consistent with the results of radical trapping experiments. In addition, the key intermediate products of the photocatalytic degradation of TC over BO-400@PAN-140 were identified via high-performance liquid chromatography-mass spectrometry, which is compatible with two possible photocatalytic reaction pathways. This work provides instructive guidelines for designing heterojunction photocatalysts via a polymer-assisted semiconductor crystallographic transition pathway for TC degradation into cleaner production.
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Affiliation(s)
- Baikang Zhu
- School of Petrochemical Engineering & Environment, Zhejiang Ocean University Zhoushan 316022 China
- United National-Local Engineering Laboratory of Oil & Gas Storage and Transportation Technology Zhoushan Zhejiang 316022 China
- Zhejiang Provincial Key Laboratory of Petrochemical Environmental Pollution Control Zhoushan Zhejiang 316022 China
| | - Qinbing Dong
- School of Petrochemical Engineering & Environment, Zhejiang Ocean University Zhoushan 316022 China
| | - Jianghua Huang
- School of Petrochemical Engineering & Environment, Zhejiang Ocean University Zhoushan 316022 China
| | - Debin Song
- School of Petrochemical Engineering & Environment, Zhejiang Ocean University Zhoushan 316022 China
| | - Lihui Chen
- School of Petrochemical Engineering & Environment, Zhejiang Ocean University Zhoushan 316022 China
| | - Qingguo Chen
- School of Petrochemical Engineering & Environment, Zhejiang Ocean University Zhoushan 316022 China
| | - Chunyang Zhai
- School of Materials Science and Chemical Engineering, Ningbo University Ningbo 315211 China
| | - Bohong Wang
- School of Petrochemical Engineering & Environment, Zhejiang Ocean University Zhoushan 316022 China
| | - Jiří Jaromír Klemeš
- Sustainable Process Integration Laboratory - SPIL, NETME Centre, Faculty of Mechanical Engineering, Brno University of Technology - VUT Brno Technická 2896/2 616 69 Brno Czech Republic
| | - Hengcong Tao
- School of Petrochemical Engineering & Environment, Zhejiang Ocean University Zhoushan 316022 China
- Zhejiang Provincial Key Laboratory of Petrochemical Environmental Pollution Control Zhoushan Zhejiang 316022 China
- College of Chemical and Biological Engineering, Zhejiang University Hangzhou 310058 China
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11
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Boosted photocatalytic efficiency of GQDs sensitized (BiO)2CO3/β-Bi2O3 heterojunction via enhanced interfacial charge transfer. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.107967] [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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12
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Ren Q, He Y, Wang H, Sun Y, Dong F. Photo-Switchable Oxygen Vacancy as the Dynamic Active Site in the Photocatalytic NO Oxidation Reaction. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Qin Ren
- Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan611731, China
| | - Ye He
- School of Resources and Environment, University of Electronic Science and Technology of China, Chengdu, Sichuan611731, China
| | - Hong Wang
- Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan611731, China
| | - Yanjuan Sun
- School of Resources and Environment, University of Electronic Science and Technology of China, Chengdu, Sichuan611731, China
| | - Fan Dong
- Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan611731, China
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13
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Self-doped Br in Bi5O7Br ultrathin nanotubes: Efficient photocatalytic NO purification and mechanism investigation. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.10.082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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14
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Zhang J, Vikrant K, Kim KH, Dong F. Photocatalytic destruction of volatile aromatic compounds by platinized titanium dioxide in relation to the relative effect of the number of methyl groups on the benzene ring. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 822:153605. [PMID: 35114233 DOI: 10.1016/j.scitotenv.2022.153605] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 01/12/2022] [Accepted: 01/28/2022] [Indexed: 06/14/2023]
Abstract
The photocatalytic destruction (PCD) of volatile organic compounds (VOC) into environmentally benign compounds is one of the most ideal routes for the management of indoor air quality. It is nevertheless not easy to achieve the mineralization of aromatic VOC through PCD technology because of their recalcitrant structures (i.e., conjugated π benzene ring). In this research, the PCD potential against three model aromatic hydrocarbons (i.e., benzene (B), toluene (T), and m-xylene (X): namely, BTX) has been explored using a titanium dioxide (TiO2) supported platinum (Pt) catalyst after the high-temperature hydrogen (H2)-based reduction (R) pre-treatment (i.e., Pt/TiO2-R). The effects of the key process variables (e.g., relative humidity (RH), oxygen (O2) content, flow rate, VOC concentration, and the co-presence of VOC) on the PCD efficiency and related mechanisms were also assessed in detail. The PCD efficiency is seen to increase with the rise in the increasing number of methyl groups on the benzene ring (in the order of benzene (46.5%), toluene (68.2%), and m-xylene (95.9%)), as the adsorption and activation of the VOC molecule on the photocatalyst surface are promoted by the increased distribution of electrons on the benzene ring. The BTX were oxidated subsequently by the photogenerated reactive oxygen species (ROS), i.e., the hydroxyl radicals (•OH) and superoxide anion radicals (•O2-). The overall results of this study are expected to help expand the applicability of photocatalysis towards air quality management by offering detailed insights into the factors and processes governing the photocatalytic decomposition of aromatic VOCs.
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Affiliation(s)
- Jinjian Zhang
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seoul 04763, Republic of Korea
| | - Kumar Vikrant
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seoul 04763, Republic of Korea
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seoul 04763, Republic of Korea.
| | - Fan Dong
- Yangtze Delta Region Institute (Huzhou), Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Huzhou 313001, China
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15
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Yukhin YM, Fleitlikh IY, Grigorieva NA, Logutenko OA. Purification of zinc sulfate solutions from chloride ions using bismuth hydroxosulfate. SEP SCI TECHNOL 2022. [DOI: 10.1080/01496395.2022.2076113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Yu. M. Yukhin
- Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - I. Yu. Fleitlikh
- Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, Krasnoyarsk, Russia
| | - N. A. Grigorieva
- Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, Krasnoyarsk, Russia
| | - O. A. Logutenko
- Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
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16
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Li Q, Zhao J, Shang H, Ma Z, Cao H, Zhou Y, Li G, Zhang D, Li H. Singlet Oxygen and Mobile Hydroxyl Radicals Co-operating on Gas-Solid Catalytic Reaction Interfaces for Deeply Oxidizing NO x. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:5830-5839. [PMID: 35404578 DOI: 10.1021/acs.est.2c00622] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Learning from the important role of porphyrin-based chromophores in natural photosynthesis, a bionic photocatalytic system based on tetrakis (4-carboxyphenyl) porphyrin-coupled TiO2 was designed for photo-induced treating low-concentration NOx indoor gas (550 parts per billion), achieving a high NO removal rate of 91% and a long stability under visible-light (λ ≥ 420 nm) irradiation. Besides the great contribution of the conventional •O2- reactive species, a synergic effect between a singlet oxygen (1O2) and mobile hydroxyl radicals (•OHf) was first illustrated for removing NOx indoor gas (1O2 + 2NO → 2NO2, NO2 + •OHf → HNO3), inhibiting the production of the byproducts of NO2. This work is helpful for understanding the surface mechanism of photocatalytic NOx oxidation and provides a new perspective for the development of highly efficient air purification systems.
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Affiliation(s)
- Qian Li
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Jingjing Zhao
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Huan Shang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry,Central China Normal University, Wuhan 430079, P. R. China
| | - Zhong Ma
- Department of Chemical Engineering and Waterloo Institute for Nanotechnology (WIN), University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Haiyan Cao
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Yue Zhou
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Guisheng Li
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Dieqing Zhang
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Hexing Li
- The Education Ministry Key Lab of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Normal University, Shanghai 200234, P. R. China
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17
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Highly efficient photocatalytic NO removal and in situ DRIFTS investigation on SrSn(OH)6. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.07.065] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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18
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Al-Najar B, Younis A, Hazeem L, Sehar S, Rashdan S, Shaikh MN, Albuflasa H, Hankins NP. Thermally induced oxygen related defects in eco-friendly ZnFe 2O 4 nanoparticles for enhanced wastewater treatment efficiencies. CHEMOSPHERE 2022; 288:132525. [PMID: 34653481 DOI: 10.1016/j.chemosphere.2021.132525] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 09/30/2021] [Accepted: 10/08/2021] [Indexed: 06/13/2023]
Abstract
Herein, a simple but highly effective strategy of thermal annealing to modulate oxygen vacancies related defects in ZnFe2O4 (ZFO) nanoparticles for obtaining enhanced wastewater treatment efficiencies is reported. The as-prepared nanoparticles were thermally annealed at three different temperatures (500 °C, 600 °C and 700 °C) and their phase purity was confirmed by X-ray diffraction (XRD). All samples were found to exhibit pure phases of ZFO with different crystallite sizes ranging from 10 nm to 25 nm. The transmission electron microscope (TEM) images showed well dispersed nanoparticles and a strong correlation of grain size growth with annealing temperature was established. The optical absorption and emission characteristics were estimated through UV-visible and Photoluminescence (PL) spectroscopy. Raman spectroscopy and X-ray Photoelectron Spectroscopy (XPS) confirmed the variation of oxygen vacancies in the synthesized samples' lattice. The photocatalytic activities of all samples were investigated and the highest efficiencies were recorded for the ZFO samples annealed at 500 °C. Under high salinity condition, the organic dye degradation efficiency of the same sample remained the highest among all. The excellent dye degradation abilities in ZFO samples can be attributed to the abundance of oxygen vacancies in the crystal lattice that slow down the recombination rate during the photocatalysis process. Moreover, cytotoxicity tests revealed that all prepared ZFO samples showed insignificant cell structure effects on Picochlorum sp microalgae, as verified by Fourier-transform infrared (FTIR) spectroscopy. On the other hand, no significant changes were detected on the viable cell concentration and Chlorophyll a content. This work presents a systematic way to finely tune the crystal sizes and to modulate oxygen related defects in ZFO through a highly effective annealing approach to signify their potential in industrial wastewater and seawater treatment processes.
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Affiliation(s)
- Basma Al-Najar
- Department of Physics, College of Science, University of Bahrain, P.O. Box 32038, Sakhir Campus, Bahrain.
| | - Adnan Younis
- Department of Physics, College of Science, University of Bahrain, P.O. Box 32038, Sakhir Campus, Bahrain
| | - Layla Hazeem
- Department of Biology, College of Science, University of Bahrain, P.O. Box 32038, Sakhir Campus, Bahrain
| | - Shama Sehar
- Department of Biology, College of Science, University of Bahrain, P.O. Box 32038, Sakhir Campus, Bahrain
| | - Suad Rashdan
- Department of Chemistry, College of Science, University of Bahrain, P.O. Box 32038, Sakhir Campus, Bahrain
| | - M Nasiruzzaman Shaikh
- Interdisciplinary Research Center for Hydrogen and Energy Storage (IRC-HES), King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, Saudi Arabia
| | - Hanan Albuflasa
- Department of Physics, College of Science, University of Bahrain, P.O. Box 32038, Sakhir Campus, Bahrain
| | - Nicholas P Hankins
- Department of Engineering Science, The University of Oxford, Parks Road, OX3 1PJ, Oxford, UK
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19
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Liu S, Ren G, Gao X, Li Z, Wang L, Meng X. A novel Bismuth hydroxide (Bi(OH)3) semiconductor with highly-efficient photocatalytic activity. Chem Commun (Camb) 2022; 58:8198-8201. [DOI: 10.1039/d2cc03369k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, a novel Bi(OH)3 photocatalyst was successfully synthesized. Benefiting from the suitable band positions, abundant alkaline groups and oxygen vacancies, the as-prepared semiconductor exhibits efficient activity in both photocatalytic CO2...
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20
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Sun W, Xiang Y, Jiang Z, Wang S, Yang N, Jin S, Sun L, Teng H, Chen H. Designed polymeric conjugation motivates tunable activation of molecular oxygen in heterogeneous organic photosynthesis. Sci Bull (Beijing) 2022; 67:61-70. [PMID: 36545961 DOI: 10.1016/j.scib.2021.07.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 06/15/2021] [Accepted: 07/05/2021] [Indexed: 01/06/2023]
Abstract
Photocatalytic oxidative organic reactions are important synthetic transformations, and research on reaction selectivity by reactive oxygen species (ROS) is significant. To date, however, there has rarely been any focus on the directed generation of ROSs. Herein, we report the first identification of tunable molecular oxygen activation induced by polymeric conjugation in nonmetallic conjugated microporous polymers (CMP). The conjugation between these can be achieved by the introduction of alkynyl groups. CMP-A with an alkynyl bridge facilitates the intramolecular charge mobility while CMP-D, lacking an alkynyl group enhances the photoexcited carrier build-up on the surface from diffusion. These different processes dominate the directed ROS generation of the superoxide radical (O2-) and singlet oxygen (1O2), respectively. This theory is substantiated by the different performances of these CMPs in the aerobic oxidation of sulfides and the dehydrogenative coupling of amines, and could provide insight into the rational design of CMPs for various heterogeneous organic photosynthesis.
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Affiliation(s)
- Wenhao Sun
- College of Science, Huazhong Agricultural University, Wuhan 430070, China
| | - Yonggang Xiang
- College of Science, Huazhong Agricultural University, Wuhan 430070, China
| | - Zhihui Jiang
- College of Science, Huazhong Agricultural University, Wuhan 430070, China; Key Laboratory of Environment Correlative Dietology (Ministry of Education), Huazhong Agricultural University, Wuhan 430070, China
| | - Shengyao Wang
- College of Science, Huazhong Agricultural University, Wuhan 430070, China.
| | - Nan Yang
- College of Science, Huazhong Agricultural University, Wuhan 430070, China
| | - Shangbin Jin
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Linhao Sun
- College of Science, Huazhong Agricultural University, Wuhan 430070, China
| | - Huailong Teng
- College of Science, Huazhong Agricultural University, Wuhan 430070, China; Key Laboratory of Environment Correlative Dietology (Ministry of Education), Huazhong Agricultural University, Wuhan 430070, China.
| | - Hao Chen
- College of Science, Huazhong Agricultural University, Wuhan 430070, China; Key Laboratory of Environment Correlative Dietology (Ministry of Education), Huazhong Agricultural University, Wuhan 430070, China.
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21
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Light-induced halogen defects as dynamic active sites for CO2 photoreduction to CO with 100% selectivity. Sci Bull (Beijing) 2022; 67:1137-1144. [DOI: 10.1016/j.scib.2022.01.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/23/2021] [Accepted: 01/06/2022] [Indexed: 11/23/2022]
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22
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Facile synthesis of a novel AgIO3/BiVO4 photocatalyst with two-step charge separation to enhance visible-light-driven photocatalytic performance for carbamazepine degradation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119273] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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23
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Highly selective oxidation of methane to formaldehyde on tungsten trioxide by lattice oxygen. CATAL COMMUN 2021. [DOI: 10.1016/j.catcom.2021.106365] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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24
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Xu J, Meng Z, Hao Z, Sun X, Nan H, Liu H, Wang Y, Shi W, Tian H, Hu X. Oxygen-vacancy abundant alpha bismuth oxide with enhanced cycle stability for high-energy hybrid supercapacitor electrodes. J Colloid Interface Sci 2021; 609:878-889. [PMID: 34836655 DOI: 10.1016/j.jcis.2021.11.081] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 11/10/2021] [Accepted: 11/15/2021] [Indexed: 10/19/2022]
Abstract
Bi2O3 is an outstanding electrode material due to its high theoretical specific capacity. Hence, the synthesis of δ-Bi2O3 materials with high oxygen-vacancy contents could improve their electrochemical performances but causes easy conversion to α-Bi2O3 with low oxygen-vacancy contents, leading to poor cycling stability and limited practical applications. To overcome these problems, an effective strategy for constructing high oxygen vacancies α-Bi2O3 on activated carbon fiber paper (ACFP) is developed in this study. To this end, ACFP/Bi(OH)3 is first synthesized by the solvothermal method and then converted to ACFP/α-Bi2O3 by in situ electrochemical activation. The proposed innovative electrochemical method quickly and easily introduces oxygen vacancies while preserving the three-dimensional structure, thereby promoting the charge transfer and ions diffusion in ACFP/α-Bi2O3. Consequently, the specific capacity of ACFP/α-Bi2O3 reaches 906C g-1 at 1 A g-1, and the capacity retention remains above 70% after 3000 cycles, a value higher than that of δ-Bi2O3 (45%). Furthermore, the hybrid supercapacitor device assembled by ACFP/α-Bi2O3 delivers a maximum energy density of 114.9 Wh kg-1 at 900 W kg-1 and outstanding cycle stability with 73.56 % retention after 5500 cycles. In sum, the proposed ACFP/α-Bi2O3 with high performance and good stability looks promising for use as bismuth-based anode materials in supercapacitors and aqueous batteries.
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Affiliation(s)
- Jian Xu
- Key Laboratory of Automobile Materials of MOE and School of Materials Science and Engineering, Jilin University, Changchun 130012, China
| | - Zeshuo Meng
- Key Laboratory of Automobile Materials of MOE and School of Materials Science and Engineering, Jilin University, Changchun 130012, China
| | - Zeyu Hao
- Key Laboratory of Automobile Materials of MOE and School of Materials Science and Engineering, Jilin University, Changchun 130012, China
| | - Xucong Sun
- Key Laboratory of Automobile Materials of MOE and School of Materials Science and Engineering, Jilin University, Changchun 130012, China
| | - Haoshan Nan
- Key Laboratory of Automobile Materials of MOE and School of Materials Science and Engineering, Jilin University, Changchun 130012, China
| | - Hongxu Liu
- Key Laboratory of Automobile Materials of MOE and School of Materials Science and Engineering, Jilin University, Changchun 130012, China
| | - Yanan Wang
- Key Laboratory of Automobile Materials of MOE and School of Materials Science and Engineering, Jilin University, Changchun 130012, China
| | - Wei Shi
- Key Laboratory of Automobile Materials of MOE and School of Materials Science and Engineering, Jilin University, Changchun 130012, China
| | - Hongwei Tian
- Key Laboratory of Automobile Materials of MOE and School of Materials Science and Engineering, Jilin University, Changchun 130012, China.
| | - Xiaoying Hu
- College of Science and Laboratory of Materials Design and Quantum Simulation, Changchun University, Changchun 130022, China.
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25
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Zahid AH, Han Q. A review on the preparation, microstructure, and photocatalytic performance of Bi 2O 3 in polymorphs. NANOSCALE 2021; 13:17687-17724. [PMID: 34734945 DOI: 10.1039/d1nr03187b] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In recent years, the semiconductor bismuth oxide (Bi2O3) has attracted increasing attention as a potential visible-light-driven photocatalyst due to its simple composition, relatively narrow bandgap (2.2-2.8 eV), and high oxidation ability with deep valence band levels. Owing to the symmetry of its unit cell, Bi2O3 exists in more than one crystal form and exhibits phase-dependent photocatalytic properties. However, the phase-selective synthesis of Bi2O3 is a complex process, and its phase transformation usually occurs in a wide temperature range. Therefore, the development of Bi2O3 phases with a controllable microstructure and good photocatalytic properties is a great challenge. Hundreds of articles have been reported on the phase-selective synthesis and photocatalytic performance of Bi2O3. However, an interacting and critical review has rarely been reported, and thus it is essential to fill the gap in the literature. In this review, the phase-dependent photocatalytic performance of Bi2O3 is presented in detail. The phase-selective synthesis and temperature-dependent phase stability of highly active Bi2O3 are explored. The phase junction in Bi2O3 is reviewed, and the future perspective with an outlook on contemporary challenges is provided finally.
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Affiliation(s)
- Abdul Hannan Zahid
- Key Laboratory for Soft Chemistry and Functional Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu, PR China.
| | - Qiaofeng Han
- Key Laboratory for Soft Chemistry and Functional Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu, PR China.
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26
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Zhang G, Xu H, Hu J. Nanoarchitectonics on Bi2MoO6 by alkali etching for enhanced photocatalytic performance. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.09.047] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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27
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Tao X, Zheng K, Huang L. Plasma induced liquid-phase synthesis of Ce/Mo metal oxides as photocatalysts. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138903] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Zhang H, Zhang X, Zhang Z, Ma X, Zhu Y, Ren M, Cao Y, Yang P. Ultrahigh Charge Separation Achieved by Selective Growth of Bi 4O 5I 2 Nanoplates on Electron-Accumulating Facets of Bi 5O 7I Nanobelts. ACS APPLIED MATERIALS & INTERFACES 2021; 13:39985-40001. [PMID: 34433250 DOI: 10.1021/acsami.1c06188] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Ultrahigh charge separation was observed in Bi4O5I2/Bi5O7I two-dimensional (2D)/one-dimensional (1D) hierarchical structures (HSs) constructed by selective growth of 2D monocrystalline Bi4O5I2 nanoplates on the electron-accumulating (100) facet of 1D monocrystalline Bi5O7I nanobelts. In addition to the presence of type-II heterojunction between Bi4O5I2 and Bi5O7I elementary entities in 2D/1D HSs, the type-II (100)/(001) surface heterojunction in Bi5O7I nanobelt substrates was also confirmed by means of density functional theory (DFT) calculations and selective photoreduction/oxidation deposition experiments. The synergistic effect of two kinds of heterojunctions in Bi4O5I2/Bi5O7I 2D/1D HSs endowed them with ultrahigh charge carrier separation and transfer characteristics. In contrast with the control sample (BB40-C) constructed by growing Bi4O5I2 nanoplates on whole four sides of Bi5O7I nanobelts, Bi4O5I2/Bi5O7I 2D/1D HSs demonstrated significantly enhanced charge transfer between Bi5O7I nanobelt substrates and Bi4O5I2 nanoplates, owing to respective electron and hole accumulations on (100) and (001) facets of Bi5O7I substrates caused by (100)/(001) surface heterojunction. The enhanced separation behavior was successfully verified by steady/transient-state photoluminescence, electrochemical techniques, and photocatalytic degradation experiments. Based on the above effective charge separation of Bi4O5I2/Bi5O7I 2D/1D HSs as well as the routine advantages for 2D/1D HSs, such as the excellent charge transport in monocrystalline elementary entities, much higher specific surface area, and enhanced light absorption by multiple reflections, the optimal BB40 HSs demonstrated ultrahigh photocatalytic performance than the control samples, whose apparent rates for Rhodamine B [or tetracycline hydrochloride (TC)] degradation were 7.1 (2.9 for TC), 10.3 (4.7 for TC), and 2.2 (1.7 for TC) times those of pristine Bi5O7I nanobelts, Bi4O5I2 nanoplates, and BB40-C, respectively. It is hoped that this crystal facet selection during the heterostructure construction in this work could provide a new strategy or some enlightenment for the exploration of highly active 2D/1D HSs or other-dimensional heterostructure nanomaterials applied in the fields of photocatalysts, solar cells, sensors, and others.
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Affiliation(s)
- Haonan Zhang
- School of Material Science and Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Xin Zhang
- School of Material Science and Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Zhaoze Zhang
- School of Material Science and Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Xiaoming Ma
- School of Information Science and Engineering, Shandong University, Qingdao 266237, P. R. China
| | - Yuanna Zhu
- School of Material Science and Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Miaojuan Ren
- School of Physics and Technology, University of Jinan, Jinan 250022, P. R. China
| | - Yongqiang Cao
- School of Material Science and Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Ping Yang
- School of Material Science and Engineering, University of Jinan, Jinan 250022, P. R. China
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Li K, He Y, Li J, Sheng J, Sun Y, Li J, Dong F. Identification of deactivation-resistant origin of In(OH) 3 for efficient and durable photodegradation of benzene, toluene and their mixtures. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:126208. [PMID: 34492969 DOI: 10.1016/j.jhazmat.2021.126208] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 05/15/2021] [Accepted: 05/20/2021] [Indexed: 06/13/2023]
Abstract
Aromatic hydrocarbon is a representative type of VOCs, which causes adverse effects to human health. The degradation stability of aromatic hydrocarbon is of vital importance to commercializing a photocatalyst for its practical application. The most commonly used titanium dioxide photocatalyst (P25) was deactivated rapidly in the photocatalytic VOCs degradation process. In this work, the indium hydroxide (In(OH)3) photocatalyst was developed, which exhibited not only higher efficient activity but also ultra-stable stability for degradation of benzene, toluene and their mixtures. The origin of the activity difference between two catalysts was investigated by combined experimental and theoretical ways. Based on in situ DRIFTS and GC-MS, it was revealed that benzoic acid and carbonaceous byproducts were specifically formed and accumulated on P25, which were responsible for deactivation of photocatalyst. In contrast, as revealed by both DFT calculations and experimental results, the reaction pathway with byproducts blocking the active sites can be thermodynamically avoided on In(OH)3. This rendered high durability to In(OH)3 photocatalyst in degradations of aromatic pollutants. The elucidation of deactivation-resistant effect and reaction mechanism as an ideal photocatalyst for practical usage were provided.
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Affiliation(s)
- Kanglu Li
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan 610065, China; Yangtze Delta Region Institute (Huzhou) & Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Huzhou 313001, China
| | - Ye He
- Yangtze Delta Region Institute (Huzhou) & School of Resources and Environment, University of Electronic Science and Technology of China, Huzhou 313001, China
| | - Jieyuan Li
- Yangtze Delta Region Institute (Huzhou) & Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Huzhou 313001, China
| | - Jianping Sheng
- Yangtze Delta Region Institute (Huzhou) & School of Resources and Environment, University of Electronic Science and Technology of China, Huzhou 313001, China
| | - Yanjuan Sun
- Yangtze Delta Region Institute (Huzhou) & School of Resources and Environment, University of Electronic Science and Technology of China, Huzhou 313001, China
| | - Jianjun Li
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan 610065, China.
| | - Fan Dong
- Yangtze Delta Region Institute (Huzhou) & Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Huzhou 313001, China.
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30
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Hassan MS, Tirth V, Alorabi AQ, Khan F, Algahtani A, Amna T. Bi 2WO 6 nanoflakes incorporated carbon nanofibers to control biological and chemical pollutants: bifunctional application. CHEM ENG COMMUN 2021. [DOI: 10.1080/00986445.2021.1922892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/30/2022]
Affiliation(s)
- M. Shamshi Hassan
- Department of Chemistry, College of Science, Albaha University, Albaha, Saudi Arabia
| | - Vineet Tirth
- Mechanical Engineering Department, College of Engineering, King Khalid University, Abha-61411, Asir, Kingdom of Saudi Arabia
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, Guraiger, Abha-61413, Asir, P.O. Box No. 9004, Kingdom of Saudi Arabia
| | - Ali Q. Alorabi
- Department of Chemistry, College of Science, Albaha University, Albaha, Saudi Arabia
| | - Firoz Khan
- Centre of Research Excellence in Renewable Energy (CORERE), King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, Saudi Arabia
| | - Ali Algahtani
- Mechanical Engineering Department, College of Engineering, King Khalid University, Abha-61411, Asir, Kingdom of Saudi Arabia
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, Guraiger, Abha-61413, Asir, P.O. Box No. 9004, Kingdom of Saudi Arabia
| | - Touseef Amna
- Department of Biology, College of Science, Albaha University, Albaha, Saudi Arabia
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Chen J, Qiu K. Oxygen vacancies and interfacial electric field co-induced photocatalytic performance of OVs-BiOI/α-Bi2O3 heterojunctions. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126262] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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32
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Li S, Zhao J, Liu G, Xu L, Tian Y, Jiao A, Chen M. Graphene oxide-grafted plasmonic Au@Ag nanoalloys with improved synergistic effects for promoting hot carrier-driven photocatalysis under visible light irradiation. NANOTECHNOLOGY 2021; 32:125401. [PMID: 33285524 DOI: 10.1088/1361-6528/abd128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Plasmonic metallic nanostructure with unique hot carrier-driven photocatalysis has recently emerged as a promising photocatalyst. Herein, we show that the plasmonic photocatalysis can be significantly promoted by supporting bimetallic Au@Ag nanoalloys (NAs) on graphene oxide (GO). The obtained Au3@Ag1/GO (molar ratio of Au to Ag∼3:1) with improved synergistic effects provides a remarkable higher visible-light (>400 nm) photocatalytic activity for a complete degradation (99.36%) of tetracycline hydrochloride (TCH) molecules within 70 min, while about 61.74% or 62.38% via monometallic Au/GO or Ag/GO. The optimum photocatalytic performance is attributed to the production of high yield hot carriers on NAs with enhanced localized surface plasmon resonance property and the pronounced photoinduced electron-transfer ability of modified GO support by overgrowth of NAs. These findings enable the optimal Au3@Ag1/GO to become an appealing high-performance photocatalyst for promoting diverse photochemical reactions.
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Affiliation(s)
- Shuang Li
- School of Science, Shandong Jianzhu University, Jinan, 250101, People's Republic of China
| | - Jinhua Zhao
- School of Science, Shandong Jianzhu University, Jinan, 250101, People's Republic of China
| | - Guiyuan Liu
- School of Science, Shandong Jianzhu University, Jinan, 250101, People's Republic of China
| | - Linlin Xu
- School of Physics, Shandong University, Jinan, 250100, People's Republic of China
| | - Yue Tian
- School of Physics, Shandong University, Jinan, 250100, People's Republic of China
| | - Anxin Jiao
- School of Physics, Shandong University, Jinan, 250100, People's Republic of China
| | - Ming Chen
- School of Physics, Shandong University, Jinan, 250100, People's Republic of China
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Construction of Bi2S3-BiOBr nanosheets on TiO2 NTA as the effective photocatalysts: Pollutant removal, photoelectric conversion and hydrogen generation. J Colloid Interface Sci 2021; 585:459-469. [DOI: 10.1016/j.jcis.2020.10.027] [Citation(s) in RCA: 80] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 10/04/2020] [Accepted: 10/07/2020] [Indexed: 01/30/2023]
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Meng J, Zhao Y, Li H, Chen R, Sun X, Sun X. Metalloporphyrin immobilized CeO 2: in situ generation of active sites and synergistic promotion of photocatalytic water oxidation. Catal Sci Technol 2021. [DOI: 10.1039/d0cy02409k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
CoTCPP transfer photoexcited electrons to CeO2 by d–f electron coupling. The in situ generation of catalytically active sites: reduction on CeO2 accompanied with the creation of oxygen vacancies and oxidation on CoTCPP that transforms into CoOOH.
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Affiliation(s)
- Jiao Meng
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan 250100
- China
- Key Laboratory of Functional Crystal Materials and Device
| | - Yue Zhao
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan 250100
- China
- Key Laboratory of Functional Crystal Materials and Device
| | - Haining Li
- Key Laboratory of Colloid and Interface Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
| | - Ruiping Chen
- State Key Lab of Structural Chemistry Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences Fuzhou
- P.R. China
| | - Xun Sun
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan 250100
- China
- Key Laboratory of Functional Crystal Materials and Device
| | - Xuan Sun
- Key Laboratory of Colloid and Interface Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
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35
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Li H, Liu X, Feng H, Zhao J, Lu P, Fu M, Guo W, Zhao Y, He Y. NH 2-MIL-125(Ti) with transient metal centers via novel electron transfer routes for enhancing photocatalytic NO removal and H 2 evolution. Catal Sci Technol 2021. [DOI: 10.1039/d1cy01008e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The transient YbII/III center coordinated with –NH2 of NH2-MIL-125(Ti) to form a ligand metal charge transfer (LLCMT) pathway, which promoted the rapid transfer of electrons, thereby enhancing photocatalytic NO removal and hydrogen production.
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Affiliation(s)
- Houfan Li
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| | - Xingyan Liu
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| | - Huan Feng
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| | - Jia Zhao
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| | - Peng Lu
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| | - Min Fu
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| | - Weiwei Guo
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| | - Yi Zhao
- BayRay Innovation Center, Shenzhen Bay Laboratory (SZBL), Guangdong 518000, China
| | - Youzhou He
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
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36
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Tian Q, Yi S, Li C, Liu Y, Niu Z, Yue X, Liu Z. Design of charge transfer channels: defective TiO 2/MoP supported on carbon cloth for solar-light-driven hydrogen generation. Inorg Chem Front 2021. [DOI: 10.1039/d0qi01527j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
We successfully integrated MoP and TiO2 on flexible carbon cloth (CC) to construct a panel photoreactor with efficient charge transfer channels, where CC acts as an electron collector and guides directional migration of electrons (TiO2 → MoP → CC).
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Affiliation(s)
- Qianqian Tian
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Shasha Yi
- School of Materials Science and Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Chuanqi Li
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Yan Liu
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Zhulin Niu
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Xinzheng Yue
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
| | - Zhongyi Liu
- College of Chemistry
- Zhengzhou University
- Zhengzhou 450001
- China
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37
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Wei L, Huang G, Zhang Y. Dependence of the intrinsic phase structure of Bi2O3 catalysts on photocatalytic CO2 reduction. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00286d] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The combination of time-resolved transient photoluminescence with in-situ Fourier transform infrared spectroscopy has been conducted to investigate the intrinsic phase structure-dependent activity of Bi2O3 catalyst for CO2 reduction.
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Affiliation(s)
- Liujin Wei
- School of Chemistry and Chemical Engineering
- Guangxi University
- Nanning 530004
- China
- State Key Laboratory for Oxo Synthesis & Selective Oxidation
| | - Guan Huang
- School of Chemistry and Chemical Engineering
- Guangxi University
- Nanning 530004
- China
| | - Yajun Zhang
- State Key Laboratory for Oxo Synthesis & Selective Oxidation
- Lanzhou Institute of Chemical Physics
- CAS
- Lanzhou
- PR China
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38
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Shi Q, Zhang Y, Sun D, Zhang S, Tang T, Zhang X, Cao S. Bi 2O 3-Sensitized TiO 2 Hollow Photocatalyst Drives the Efficient Removal of Tetracyclines under Visible Light. Inorg Chem 2020; 59:18131-18140. [PMID: 33301306 DOI: 10.1021/acs.inorgchem.0c02598] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The complete removal of tetracycline residuals under visible light still is a challenging task because of their robust ring structure. To tackle this issue, we explore a novel Bi2O3-sensitized TiO2 visible-light photocatalyst by combining p-n heterojunction with hollow structure. The hollow TiO2/Bi2O3 photocatalyst manifests excellent photocatalytic performance and recyclability toward the complete degradation (100%) of antibiotics under visible light (λ > 420 nm) because of the synergistic effect of p-n heterojunction and hollow structure, successfully overcoming the challenge of the incomplete removal of antibiotics over almost all of the reported visible-light photocatalysts. Additionally, the effects of inorganic ions, pH value, water matrix, and outdoor light on the degradation of tetracyclines were investigated with many details. Notably, the degradation pathways and mechanism of tetracycline were revealed according to trapping experiments, HPLC-MS, and photoelectrochemical characterizations. Therefore, this work provides a new insight into developing visible-light photocatalysts with excellent photocatalytic performances for the complete removal of other refractory contaminants.
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Affiliation(s)
- Qingye Shi
- Research School of Polymer Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Ying Zhang
- Anhui Provincial Key Laboratory for Degradation and Monitoring of Pollution of the Environment, School of Chemistry and Material Engineering, Fuyang Normal University, Fuyang 236037, China
| | - Dongxiao Sun
- Research School of Polymer Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Sai Zhang
- Research School of Polymer Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China.,Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, China
| | - Tao Tang
- Research School of Polymer Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xuanxuan Zhang
- Research School of Polymer Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Shunsheng Cao
- Research School of Polymer Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
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39
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Yuan C, Chen R, Wang J, Wu H, Sheng J, Dong F, Sun Y. La-doping induced localized excess electrons on (BiO) 2CO 3 for efficient photocatalytic NO removal and toxic intermediates suppression. JOURNAL OF HAZARDOUS MATERIALS 2020; 400:123174. [PMID: 32569988 DOI: 10.1016/j.jhazmat.2020.123174] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 06/05/2020] [Accepted: 06/06/2020] [Indexed: 06/11/2023]
Abstract
Photocatalysis technology has been extensively adopted to abate typical air pollutants. Nevertheless, it is a challenge to develop photocatalysts aiming to simultaneously improve photocatalytic selectivity and efficiency. In this study, to improve the photocatalytic selectivity and the performance of (BiO)2CO3 in the oxidation of NO to target products (NO2- /NO3-), we developed a novel method to construct La-doped (BiO)2CO3 (La-BOC) for forming localized excess electrons (Ex) on (BiO)2CO3 surface. The results indicate that the Ex could effectively accelerate the activation of reactants and promote charge separation and transfer. Under visible light, the gas molecules could capture the Ex and get activated to produce reactive oxygen species (ROS) with high oxidation ability, which enables complete oxidation of NO to target products instead of producing other toxic by-products. Due to the functionality of the Ex, the photocatalytic selectivity and efficiency of La-BOC have been synchronously improved. Combining experimental and theoretical methods, this work unravels the pathway of charge carriers transportation/transformation and elucidates the photocatalytic NO oxidation mechanism. The present work could provide a novel method to improve photocatalytic selectivity and activity for safe air pollutant abatement.
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Affiliation(s)
- Chaowei Yuan
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China; School of Resources and Environment, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Ruimin Chen
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China; School of Resources and Environment, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Jiaodong Wang
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China; School of Resources and Environment, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Huizhong Wu
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China; School of Resources and Environment, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Jianping Sheng
- School of Resources and Environment, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Fan Dong
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China; School of Resources and Environment, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Yanjuan Sun
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China; School of Resources and Environment, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China.
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40
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Bartoli M, Jagdale P, Tagliaferro A. A Short Review on Biomedical Applications of Nanostructured Bismuth Oxide and Related Nanomaterials. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E5234. [PMID: 33228140 PMCID: PMC7699380 DOI: 10.3390/ma13225234] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 11/16/2020] [Accepted: 11/18/2020] [Indexed: 12/16/2022]
Abstract
In this review, we reported the main achievements reached by using bismuth oxides and related materials for biological applications. We overviewed the complex chemical behavior of bismuth during the transformation of its compounds to oxide and bismuth oxide phase transitions. Afterward, we summarized the more relevant studies regrouped into three categories based on the use of bismuth species: (i) active drugs, (ii) diagnostic and (iii) theragnostic. We hope to provide a complete overview of the great potential of bismuth oxides in biological environments.
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Affiliation(s)
- Mattia Bartoli
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy;
- Italian Institute of Technology, Via Livorno 60, 10144 Torino, Italy
| | - Pravin Jagdale
- Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Via G. Giusti 9, 50121 Florence, Italy;
| | - Alberto Tagliaferro
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy;
- Italian Institute of Technology, Via Livorno 60, 10144 Torino, Italy
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41
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Luo S, Liu X, Wei X, Fu M, Lu P, Li X, Jia Y, Ren Q, He Y. Noble-metal-free cobaloxime coupled with metal-organic frameworks NH 2-MIL-125: A novel bifunctional photocatalyst for photocatalytic NO removal and H 2 evolution under visible light irradiation. JOURNAL OF HAZARDOUS MATERIALS 2020; 399:122824. [PMID: 32535515 DOI: 10.1016/j.jhazmat.2020.122824] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 04/07/2020] [Accepted: 05/06/2020] [Indexed: 06/11/2023]
Abstract
The novel bifunctional NH2-MIL-125/Co(dmgH)2 composite catalysts with several different Co(dmgH)2 contents that can simultaneously achieve photocatalytic NO removal and hydrogen production were first prepared by a simple and convenient method. The corresponding physical and chemical properties of the composite catalysts were characterized by SEM, XRD, ESR, in situ DRIFTS, etc. The characterization results indicated that the noble-metal-free Co(dmgH)2, which was much cheaper and more available than most noble-metals such as Pt, could be an effective co-catalyst to accelerate the separation of photogenerated electron-hole pairs, further eventually enhancing the photocatalytic efficiency. Under visible-light irradiation for half an hour, the NO removal ratio of NH2-MIL-125/Co(dmgH)2 (3 wt%) increased by 22.7 % compared with the pristine NH2-MIL-125 without Co(dmgH)2 loading. In addition, it was found that Eosin Y dye-sensitized NH2-MIL-125/Co(dmgH)2 (3 wt%) was capable of promoting a hydrogen generation rate of 2195 μmol g-1 h-1 under visible light, which was 12.6 times greater than the original NH2-MIL-125. This strategy was expected as an available way to fabricate noble-metal-free molecular complexes with metal-organic frameworks (MOFs) to enhance the photocatalytic NO removal and hydrogen production performance simultaneously.
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Affiliation(s)
- Shuang Luo
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| | - Xingyan Liu
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China.
| | - Xiangjun Wei
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| | - Min Fu
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| | - Peng Lu
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| | - Xuan Li
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| | - Yiming Jia
- Department of Chemistry "G. Ciamician", University of Bologna, Ravenna Campus, 48121 Ravenna, Italy
| | - Qiao Ren
- College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, China
| | - Youzhou He
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China.
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Cui W, Li J, Chen L, Dong X, Wang H, Sheng J, Sun Y, Zhou Y, Dong F. Nature-inspired CaCO 3 loading TiO 2 composites for efficient and durable photocatalytic mineralization of gaseous toluene. Sci Bull (Beijing) 2020; 65:1626-1634. [PMID: 36659038 DOI: 10.1016/j.scib.2020.05.024] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 05/06/2020] [Accepted: 05/11/2020] [Indexed: 01/21/2023]
Abstract
The accumulation of intermediates or final products on TiO2 during photocatalytic volatile organic compounds (VOCs) degradation is typically neglected, despite the fact that it could result in the block of active sites and the deactivation of photocatalysts. Inspired from the natural formation of stalactite (CaCO3 + H2O + CO2 ↔ Ca(HCO3)2), we fabricated CaCO3 loading TiO2 composites (CCT21) to realize the spontaneously transfer of accumulated final products (CO2 and H2O). Efficient and durable performance for gaseous toluene removal has been demonstrated and the cost of photocatalyst is greatly reduced by the comparison of specific activity. The introduction of CaCO3 induces the interaction between TiO2 and CaCO3 to stimulate abundant activated electrons for the improvement on the adsorption and activation of reactants and the transformation of photogenerated carriers, and most importantly, facilitates the transfer of final products to release active sites and thus suppress the deactivation of TiO2. Furthermore, we develop a facile method to immobilize CCT21 powder on flexible support, which greatly reduces the loss of photocatalysts and correspondingly enables the practical application of TiO2-based products. Therefore, this work presents a novel nature-inspired strategy to address the challenge of deactivation, and advances the development of photocatalytic technology for environmental remediation.
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Affiliation(s)
- Wen Cui
- The Center of New Energy Materials and Technology, School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, China; Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Jieyuan Li
- Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Lvcun Chen
- The Center of New Energy Materials and Technology, School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, China; Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Xing'an Dong
- Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Hong Wang
- Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Jianping Sheng
- Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Yanjuan Sun
- School of Resources and Environment, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Ying Zhou
- The Center of New Energy Materials and Technology, School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, China
| | - Fan Dong
- The Center of New Energy Materials and Technology, School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, China; Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China.
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Liao J, Li K, Ma H, Dong F, Zeng X, Sun Y. Oxygen vacancies on the BiOCl surface promoted photocatalytic complete NO oxidation via superoxide radicals. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2020.03.081] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Mills A, Andrews R, Han R, O’Rourke C, Hodgen S. Supersensitive test of photocatalytic activity based on ISO 22197-1:2016 for the removal of NO. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112734] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Enhanced Sulfamerazine Removal via Adsorption–Photocatalysis Using Bi2O3–TiO2/PAC Ternary Nanoparticles. WATER 2020. [DOI: 10.3390/w12082273] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The presence of sulfonamides (SAs) in water has received increasing attention due to the risk to ecosystems. The adsorption and photocatalysis performance for sulfamerazine (SMZ) of Bi2O3–TiO2 supported on powdered activated carbon (Bi2O3–TiO2/PAC) nanoparticles was evaluated. The amount of doped Bi2O3 not only influenced the photocatalytic performance but also impacted the adsorption capacity. The adsorption mass transfer mechanism of Bi2O3–TiO2/PAC was elucidated and is further discussed in combination with the photocatalytic mechanism. It was indicated that Bi2O3–TiO2/PAC(10%–700 °C) performed best, and the SMZ removal by the adsorption–photocatalysis of Bi2O3–TiO2/PAC(10%–700 °C) reached 95.5%. Adsorption onto active sites was a major adsorption step, and external diffusion was assisted. Superoxide radical (●O2−) and hole (h+) were identified as the major reactive oxygen species (ROS) for SMZ removal. Benzene ring fracture, SO2 extrusion and nitrogenated SMZ were proposed as the main pathways for photocatalysis. Meanwhile, alkaline conditions enhanced photocatalytic performance, while contrary effects were observed for adsorption. The adsorption–photocatalysis removal performance for SMZ in lake water was better than that for river water. It can be generalized for the potential application of photocatalysis coupling with adsorption to remove refractory antibiotics in water.
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