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Fu C, Du J, Shi N, Yang L, Che Q, Zhang P. Strongly active and environmentally friendly WO 3/C 3N 4 photocatalysts for converting cyclohexane to cyclohexanone under ambient conditions. Sci Rep 2024; 14:17947. [PMID: 39095417 PMCID: PMC11297171 DOI: 10.1038/s41598-024-68319-5] [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: 04/25/2024] [Accepted: 07/22/2024] [Indexed: 08/04/2024] Open
Abstract
C-H bond activation under mild conditions remains a great challenge in the chemical industry, while catalytic cyclohexane oxidation is inefficient and often requires organic solvents and strong oxidants. This study constructed a C3N4/WO3 Z-type heterojunction catalyst to efficiently convert cyclohexane into cyclohexanone and cyclohexanol (KA oil) through aqueous phase oxidation by O2 under visible light irradiation. With strong redox performance and high photogenerated carrier separation ability, the proposed composite catalyst can produce the key active species for cyclohexane oxidation in the H2O-O2 system. The reaction mechanism was clarified through experiment and DFT theory calculation. Cyclohexane was converted into cyclohexyl radical under the action of ·OH, and ·O2- converted most products into cyclohexanone. The catalyst can be recycled under optimized process conditions while reaching a KA oil yield of 139.73 μmol g-1 h-1 and a selectivity of 93.1%.
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Affiliation(s)
- Chengyu Fu
- School of Textile Science and Engineering, Xi'an Polytechnic University, 19 Jinhua Road, Xi'an, 710048, Shaanxi, China
- Key Laboratory of Functional Textile Material and Product (Xi'an Polytechnic University), Ministry of Education, Xi'an, 710048, Shaanxi, China
| | - Jiehao Du
- School of Textile Science and Engineering, Xi'an Polytechnic University, 19 Jinhua Road, Xi'an, 710048, Shaanxi, China
| | - Na Shi
- School of Textile Science and Engineering, Xi'an Polytechnic University, 19 Jinhua Road, Xi'an, 710048, Shaanxi, China
| | - Limeng Yang
- School of Textile Science and Engineering, Xi'an Polytechnic University, 19 Jinhua Road, Xi'an, 710048, Shaanxi, China
- Key Laboratory of Functional Textile Material and Product (Xi'an Polytechnic University), Ministry of Education, Xi'an, 710048, Shaanxi, China
| | - Qiuling Che
- ANTA (China) Co., Ltd., Dongshan Industrial Zone, Chidian Town, Jinjiang, 362212, Fujian, China
| | - Pengfei Zhang
- School of Textile Science and Engineering, Xi'an Polytechnic University, 19 Jinhua Road, Xi'an, 710048, Shaanxi, China.
- Key Laboratory of Functional Textile Material and Product (Xi'an Polytechnic University), Ministry of Education, Xi'an, 710048, Shaanxi, China.
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2
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Xiang D, Jin X, Sun G, Zhong C, Gao S. Oxygen vacancy engineering of ultra-small CuWO 4 nanoparticles for boosting photocatalytic organic pollutant degradation. Dalton Trans 2024; 53:7839-7847. [PMID: 38624191 DOI: 10.1039/d4dt00628c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Nanomaterials have attracted great interest in the field of photocatalytic degradation due to their larger specific surface area and efficient charge/mass transfer ability, which are beneficial for enhancing photocatalytic activity. However, the bandgap of photocatalysts would increase with the size reduction, weakening the photoabsorption ability. Thus the relationship between the size of catalysts and photoactivity should be balanced to achieve optimal photocatalytic performance. Herein, ultra-small CuWO4 nanoparticles (ca. 39 nm) with moderate oxygen vacancies (CuWO4-OVs) were synthesized by the cascade strategy (ligand confinement@fast calcination). The introduction of oxygen vacancies offset the deficiency of light absorption ability caused by the small size effect. Besides, oxygen vacancies could provide more reaction active sites, conducive to the adsorption and activation of dye molecules and H2O. Degradation experiments reveal that the optimized photocatalyst CuWO4-OVs 350 shows outstanding photocatalytic activity, and the removal ratio of methylene blue (MB) reaches over 90.26% in 70 min, exceeding that of pure CuWO4-air (37.66%). Additionally, the degradation performance of CuWO4-OVs 350 surpasses most of the other CuWO4-based photocatalytic systems. More importantly, the photocatalytic degradation activity of CuWO4-OVs 350 could remain at 88.26% even after five cycles, and high photostability was achieved. This work affords constructive inspiration for synergistic photoactivity enhancement and increase of catalyst reaction active sites to achieve eminent photocatalytic degradation performance.
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Affiliation(s)
- Dingzhou Xiang
- School of Chemistry and Chemical Engineering, Faculty of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, 230601 Hefei, Anhui, P.R. China.
| | - Xin Jin
- School of Chemistry and Chemical Engineering, Faculty of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, 230601 Hefei, Anhui, P.R. China.
| | - Guilin Sun
- School of Chemistry and Chemical Engineering, Faculty of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, 230601 Hefei, Anhui, P.R. China.
| | - Chenghuan Zhong
- School of Chemistry and Chemical Engineering, Faculty of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, 230601 Hefei, Anhui, P.R. China.
| | - Shan Gao
- School of Chemistry and Chemical Engineering, Faculty of Materials Science and Engineering, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Anhui University, 230601 Hefei, Anhui, P.R. China.
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Tang Y, Tai R, Song X, Gao S, Wu R, Chen S, Li P, Wang Q. Zinc-Doped BiOBr Hollow Microspheres for Enhanced Visible Light Photocatalytic Degradation of Antibiotic Residues. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:6515-6523. [PMID: 38466089 DOI: 10.1021/acs.langmuir.4c00155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
Photocatalysis represents an effective technology for environmental remediation. Herein, a series of Zn-doped BiOBr hollow microspheres are synthesized via one-pot solvothermal treatment of bismuth nitrate and dodecyl ammonium bromide in ethylene glycol along with a calculated amount of zinc acetate. Whereas the materials morphology and crystal structure remain virtually unchanged upon Zn-doping, the photocatalytic performance toward the degradation of ciprofloxacin is significantly improved under visible light irradiation. This is due to the formation of a unique band structure that facilitates the separation of photogenerated electron-hole pairs, reduced electron-transfer resistance, and enhanced electron mobility and carrier concentration. The best sample consists of a Zn doping amount of 1%, which leads to a 99.2% degradation rate of ciprofloxacin under visible photoirradiation for 30 min. The resulting photocatalysts also exhibit good stability and reusability, and the degradation intermediates exhibit reduced cytotoxicity compared to ciprofloxacin. These results highlight the unique potential of BiOBr-based photocatalysts for environmental remediation.
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Affiliation(s)
- Yao Tang
- Laboratory for Micro-sized Functional Materials & College of Elementary Education and Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Ran Tai
- Laboratory for Micro-sized Functional Materials & College of Elementary Education and Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Xingjian Song
- Department of Chemistry and Biochemistry, University of California, 1156 High Street, Santa Cruz, California 95064, United States
| | - Shuai Gao
- Laboratory for Micro-sized Functional Materials & College of Elementary Education and Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Runjie Wu
- Laboratory for Micro-sized Functional Materials & College of Elementary Education and Department of Chemistry, Capital Normal University, Beijing 100048, China
| | - Shaowei Chen
- Department of Chemistry and Biochemistry, University of California, 1156 High Street, Santa Cruz, California 95064, United States
| | - Peishen Li
- College of Environmental Sciences and Engineering, The Key Laboratory of Water and Sediment Sciences (MOE), Peking University, Beijing 100871, China
| | - Qiang Wang
- Laboratory for Micro-sized Functional Materials & College of Elementary Education and Department of Chemistry, Capital Normal University, Beijing 100048, China
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4
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Song Y, Bao Z, Gu Y. Photocatalytic Enhancement Strategy with the Introduction of Metallic Bi: A Review on Bi/Semiconductor Photocatalysts. CHEM REC 2024; 24:e202300307. [PMID: 38084448 DOI: 10.1002/tcr.202300307] [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: 09/23/2023] [Revised: 11/17/2023] [Indexed: 03/10/2024]
Abstract
Semiconductor photocatalysis has great potential in the fields of solar fuel production and environmental remediation. Nevertheless, the photocatalytic efficiency still constrains its practical production applications. The development of new semiconductor materials is essential to enhance the solar energy conversion efficiency of photocatalytic systems. Recently, the research on enhancing the photocatalytic performance of semiconductors by introducing bismuth (Bi) has attracted widespread attention. In this review, we briefly overview the main synthesis methods of Bi/semiconductor photocatalysts and summarize the control of the micromorphology of Bi in Bi/semiconductors and the key role of Bi in the catalytic system. In addition, the promising applications of Bi/semiconductors in photocatalysis, such as pollutant degradation, sterilization, water separation, CO2 reduction, and N2 fixation, are outlined. Finally, an outlook on the challenges and future research directions of Bi/semiconductor photocatalysts is given. We aim to offer guidance for the rational design and synthesis of high-efficiency Bi/semiconductor photocatalysts for energy and environmental applications.
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Affiliation(s)
- Yankai Song
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Zongqi Bao
- Foreign Language Department, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Yingying Gu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, China
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Jing S, Wang H, Wang A, Cheng R, Liang H, Chen F, Brouzgou A, Tsiakaras P. Surface plasmon resonance Bismuth-modified NH 2-UiO-66 with enhanced photocatalytic tetracycline degradation performance. J Colloid Interface Sci 2024; 655:120-132. [PMID: 37931552 DOI: 10.1016/j.jcis.2023.10.149] [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: 08/02/2023] [Revised: 10/10/2023] [Accepted: 10/27/2023] [Indexed: 11/08/2023]
Abstract
For nearly a century, the misuse of antibiotics has gradually polluted water and threatened human health. Photocatalysis is considered an efficient way to remove antibiotics from water. Zirconium-based metal-organic frameworks have attracted much attention as promising photocatalysts for the degradation of antibiotics. However, single Zirconium-based metal-organic frameworks can still not achieve a more satisfactory photocatalytic efficiency, due to poor light absorption and charge separation efficiency. In this study, a novel metal-loaded metal-organic frameworks material was explored. As a potential photocatalytic material, the performance of NH2-UiO-66 in the photocatalytic degradation of tetracycline was greatly improved just by the loading of a single metal. Bismuth/NH2-UiO-66 photocatalysts of various compositions were physicochemically (TEM, SEM, XRD, XPS, BET, FTIR, UV-VIS, PL), and electrochemically (electrochemical impedance spectroscopy, photocurrent response) characterized. We evaluated the photocatalytic performance of Bismuth/NH2-UiO-66 composites by measuring their ability towards tetracycline decomposition in simulated sunlight irradiation conditions. The experimental results indicated that the introduction of metal Bismuth significantly boosts the photocatalytic activity of the composite catalysts. The final degradation rate of Bismuth/NH2-UiO-66 for tetracycline was found to be 95.8%, namely 2.7 times higher than pure NH2-UiO-66. This behavior is due to the surface plasmon resonance effect of Bismuth, which ameliorates the photocatalyst's electron-hole separation and strengthens the charge transfer. Apart from that, the presence of Bismuth magnifies the visible-light absorption range of Bismuth/NH2-UiO-66. In this study, an innovative approach for designing efficient and cost-effective metal-modified metal-organic frameworks photocatalysts is proposed.
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Affiliation(s)
- Shengyu Jing
- School of Information and Control Engineering, China University of Mining and Technology, Xuzhou 221116, China; Laboratory of Alternative Energy Conversion Systems, Department of Mechanical Engineering, School of Engineering, University of Thessaly, Pedion Areos 38834, Volos, Greece
| | - Haoran Wang
- School of Information and Control Engineering, China University of Mining and Technology, Xuzhou 221116, China
| | - Anhu Wang
- Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, Carbon Neutrality Institute, China University of Mining and Technology, Xuzhou 221008, China; School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221008, China
| | - Ruolin Cheng
- Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, Carbon Neutrality Institute, China University of Mining and Technology, Xuzhou 221008, China
| | - Huagen Liang
- Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, Carbon Neutrality Institute, China University of Mining and Technology, Xuzhou 221008, China; School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221008, China.
| | - Fu Chen
- School of Public Administration, Hohai University, Nanjing 210098, China.
| | - Angeliki Brouzgou
- Department of Energy Systems, Faculty of Technology, University of Thessaly, Geopolis, 41500 Larisa, Greece
| | - Panagiotis Tsiakaras
- Laboratory of Alternative Energy Conversion Systems, Department of Mechanical Engineering, School of Engineering, University of Thessaly, Pedion Areos 38834, Volos, Greece.
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Djatoubai E, Khan MS, Haq SU, Heidari G, Dong CL, Nga TTT, Chen JL, Shen S. Engineered Cobalt Single-Atoms@BiFeO 3 Heteronanostructures for Highly Efficient Solar Water Oxidation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2206293. [PMID: 36755353 DOI: 10.1002/smll.202206293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 12/15/2022] [Indexed: 05/18/2023]
Abstract
Efficient charge-carrier separation and their utilization are the key factors in overcoming sluggish four-electron reaction kinetics involved in photocatalytic oxygen evolution. Here, a novel study demonstrates the significance of Na2 S2 O8 as a sacrificial agent in comparison to AgNO3 . Resultantly, BiFeO3 (BFO) and titanium doped-oxygen deficient BiFeO3 (Ti-BFO-R) nanostructures achieve ≈64 and 44.5 times higher O2 evolution in the presence of Na2 S2 O8 compared to AgNO3 as a sacrificial agent, respectively. Furthermore, the presence of Co single atoms (Co-SAs) deposited via immersion method on BFO and Ti-BFO-R nanostructures led to achieving outstanding O2 evolution at a rate of 16.11 and 23.89 mmol g-1 h-1 , respectively, which is 153 and 227.5 times higher compared to BFO (in the presence of AgNO3 ), the highest O2 evolution observed for BFO-based materials to date. The successful deposition of Co-SAs is confirmed by aberration-corrected high-angle annular dark-field scanning transmission electron microscopy (AC HAADF-STEM) and X-ray absorption near-edge structure (XANES). The charge transfer investigations confirm the significance of Co-SAs on BFO-based photocatalysts for improved charge-carrier separation, transport, and utilization. This novel study validates the excellent role of Na2 S2 O8 as a sacrificial agent and Co-SAs as a cocatalyst for BFO-based nanostructures for efficient O2 evolution.
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Affiliation(s)
- Essossimna Djatoubai
- International Research Center for Renewable Energy (IRCRE), State Key Laboratory of Multiphase Flow in Power Engineering (MPFE), Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Muhammad Shuaib Khan
- International Research Center for Renewable Energy (IRCRE), State Key Laboratory of Multiphase Flow in Power Engineering (MPFE), Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Sajjad Ul Haq
- International Research Center for Renewable Energy (IRCRE), State Key Laboratory of Multiphase Flow in Power Engineering (MPFE), Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Golnaz Heidari
- CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics and Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Chung-Li Dong
- Department of Physics, Tamkang University, 151 Yingzhuan Road, New Taipei City, 25137, Taiwan
| | - Ta Thi Thuy Nga
- Department of Physics, Tamkang University, 151 Yingzhuan Road, New Taipei City, 25137, Taiwan
| | - Jeng-Lung Chen
- Department of Physics, Tamkang University, 151 Yingzhuan Road, New Taipei City, 25137, Taiwan
| | - Shaohua Shen
- International Research Center for Renewable Energy (IRCRE), State Key Laboratory of Multiphase Flow in Power Engineering (MPFE), Xi'an Jiaotong University, Xi'an, 710049, P. R. China
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Li W, Wang Y, Zhang Y, Pan Y, Xu M, Song Y, Li N, Yan T. Pine Dendritic Bi/BiOBr Photocatalyst for Efficient Degradation of Antibiotics. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:4140-4149. [PMID: 36877128 DOI: 10.1021/acs.langmuir.3c00042] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Constructing Bi/BiOX (X = Cl, Br) heterostructures with unique electron transfer channels enables charge carriers to transfer unidirectionally at the metal/semiconductor junction and inhibits the backflow of photogenerated carriers. Herein, novel pine dendritic Bi/BiOX (X = Cl, Br) nanoassemblies with multiple electron transfer channels have been successfully synthesized with the assistance of l-cysteine (l-Cys) through a one-step solvothermal method. Such a pine dendritic Bi/BiOBr photocatalyst shows excellent activity toward the degradation of many antibiotics such as tetracycline (TC), norfloxacin, and ciprofloxacin. In particular, its photocatalytic degradation activity of TC is higher than those of reference spherical Bi/BiOBr, lamellar BiOBr, and BiOBr/Bi/BiOBr double-sided nanosheet arrays. Comprehensive characterizations demonstrate that the pine dendritic structure can construct multiple electron transfer channels from BiOBr to metallic Bi, resulting in an obviously promoted separation efficiency of photogenerated carriers. The synthesis method that uses l-Cys to control the morphology provides a guidance to prepare special metal/semiconductor photocatalysts and would be helpful to design a highly efficient photocatalytic process.
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Affiliation(s)
- Wenjuan Li
- Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Yujie Wang
- Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Yipin Zhang
- Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Yining Pan
- Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Menglu Xu
- Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Yang Song
- Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Na Li
- Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Tingjiang Yan
- Key Laboratory of Catalytic Conversion and Clean Energy in Universities of Shandong Province, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, P. R. China
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Chen J, Zhu W, Zhao W, Wei P, Wang G, Ji Y, An T. Revelation of contributing mechanism of reactive oxygen species in photocatalytic ozonation heterocyclization of gaseous hexane isomers. CHEMOSPHERE 2023; 316:137759. [PMID: 36621686 DOI: 10.1016/j.chemosphere.2023.137759] [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: 09/16/2022] [Revised: 12/14/2022] [Accepted: 01/03/2023] [Indexed: 06/17/2023]
Abstract
The reactive oxygen species (ROS) involved photocatalytic ozonation of gaseous n-hexane to heterocyclic compounds has been recently reported. However, whether such heterocyclization reaction happens on other alkanes and what is the contributing mechanism of ROS to the heterocyclic compound formation are still unclear. In present study, photocatalytic ozonation of three n-hexane's isomers (i.e. 2-methypentane, 3-methylpentane and 2,3-dimethylbutane) on Cu2O-CuO/TiO2-foam ceramic was investigated. Within reaction period, 2-methylpentane and 3-methylpentane not only showed higher average degradation efficiency than 2,3-dimethylbutane, but also separately converted to interfacial heterocyclic compounds of 5,5-dimethyldihydro-2(3H)-furanone and 4,5-dimethyl-4,5-dihydro-2(3H)-furanone. Enough reaction time, optimum experimental atmosphere and shorter light wavelength benefited the formation of heterocyclization products. None of O3, 1O2, electron and hole directly contributed to the heterocyclic compound formation. While •O2- dominated the production of the heterocyclic compound under the dry reaction atmosphere and •OH showed more important role than •O2- in the heterocyclic compound formation under the moist reaction atmosphere. Theoretical calculation confirmed that •OH or •O2- induced heterocyclization reaction of alkane was exothermic, while the former reaction released 0.47 eV higher energy than the later reaction. The findings provide a comprehensive understanding of contributing roles of ROS in heterocyclization reaction of alkanes, and are helpful for effective elimination of industrial alkanes by advanced oxidation methods.
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Affiliation(s)
- Jiangyao Chen
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangdong Technology Research Center for Photocatalytic Technology Integration and Equipment Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
| | - Weikun Zhu
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangdong Technology Research Center for Photocatalytic Technology Integration and Equipment Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Weina Zhao
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangdong Technology Research Center for Photocatalytic Technology Integration and Equipment Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Peng Wei
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangdong Technology Research Center for Photocatalytic Technology Integration and Equipment Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Gu Wang
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangdong Technology Research Center for Photocatalytic Technology Integration and Equipment Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Yuemeng Ji
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangdong Technology Research Center for Photocatalytic Technology Integration and Equipment Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Taicheng An
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangdong Technology Research Center for Photocatalytic Technology Integration and Equipment Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
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9
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Fatima S, Rizwan S. Synergetic Catalytic and Photocatalytic Performances of Tin-Doped BiFeO 3/Graphene Nanoplatelet Hybrids under Dark and Light Conditions. ACS OMEGA 2023; 8:3736-3744. [PMID: 36743001 PMCID: PMC9893474 DOI: 10.1021/acsomega.2c04971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 09/28/2022] [Indexed: 06/18/2023]
Abstract
Because of a rapidly growing need for water, it is essential to find new fast and reliable ways of water purification from organic pollutants. For removing organic azo dyes from water, various catalysts and photocatalysts have been designed to meet crucial water needs. In this study tin (Sn) doped bismuth ferrite (BFO) nanoparticles have been synthesized using the sol-gel technique. Further, BFSO/GNP nanohybrids were synthesized by mixing BFSO nanoparticles with graphene nanoplatelets (GNPs) via a simple and cost effective coprecipitation process. XRD and SEM showed that BFSO/GNP nanohybrids are well grown in crystal structure along with uniform and homogeneous morphology. XPS supported the elemental composition and interface bonding of both materials present inside the nanohybrids. DRS and catalytic activities showed that BFSO/GNP nanohybrids are both dark and light active species for performing dye degradation activities during water purification. The as-synthesized nanohybrids provided efficient dye removal from water even in the absence of light owing to the presence of defects and trap-state carriers (electrons) inside the graphene sheets. The optimized nanohybrid BFSO-15/GNP showed 100% dye removal in 60 min with 90% catalytic activity under dark. The recyclability test showed stable and repeatable performance of BFSO/GNP nanohybrids up to 10 cycles of catalytic activities.
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Affiliation(s)
- Sabeen Fatima
- Physics
Characterization and Simulations Lab (PCSL), Department of Physics,
School of Natural Sciences (SNS), National
University of Sciences and Technology (NUST), Islamabad, 54000, Pakistan
| | - Syed Rizwan
- Physics
Characterization and Simulations Lab (PCSL), Department of Physics,
School of Natural Sciences (SNS), National
University of Sciences and Technology (NUST), Islamabad, 54000, Pakistan
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10
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Sun E, Wei H, Zhang S, Bi Y, Huang Z, Ji G, Liu F, Zhao C. Adsorption coupling photocatalytic removal of gaseous n-hexane by phosphorus-doped g-C 3N 4/TiO 2/Zn(OAc) 2-ACF composites. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:2164-2178. [PMID: 35931846 DOI: 10.1007/s11356-022-22382-5] [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: 04/13/2022] [Accepted: 07/31/2022] [Indexed: 06/15/2023]
Abstract
VOCs emission reduction in the petroleum and petrochemical industry is a hot and difficult topic at present. The single method may not be able to meet the actual treatment status. Therefore, the adsorption coupled photocatalytic degradation technology was used to remove VOCs. Phosphorus-doped carbon nitride (PCN) and PCN/TiO2 were prepared by hydrothermal synthesis and sol-gel method, and then PCN/TiO2/Zn(OAc)2-ACF composites were prepared by ultrasonic impregnation on zinc acetate modified activated carbon fibers (Zn(OAc)2-ACF). The removal efficiency of n-hexane by composite materials was explored in a self-made reactor, and the factors affecting removal efficiency, removal mechanism, and possible ways of degradation were investigated. The results showed that under the optimum reaction conditions (initial concentration of n-hexane 200 mg/m3, space velocity 1000 h-1, light intensity 24 W, mass fraction of doped PCN 6%, loading twice, calcination temperature 450 °C), PCN/TiO2/Zn(OAc)2-ACF composite has the highest removal efficiency of n-hexane (90.2%). The adsorption capacity of the composites after doping the P element was 215.3 mg/g, which did not enhance the adsorption performance compared with that before doping, but the removal rate of n-hexane was higher. This showed that doping P element was helpful to enhance the photocatalytic activity of the composites.
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Affiliation(s)
- EnCheng Sun
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, People's Republic of China
- Technology Inspection Center of ShengLi Oil Field, Dongying, 257000, People's Republic of China
| | - HaiDi Wei
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, People's Republic of China
| | - Shuai Zhang
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, People's Republic of China
| | - Yuxi Bi
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, People's Republic of China
| | - Ziyan Huang
- Hubei University, Wuhan, 430062, People's Republic of China
| | - Guoyang Ji
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, People's Republic of China
| | - Fang Liu
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, People's Republic of China.
| | - Chaocheng Zhao
- College of Chemical Engineering, China University of Petroleum, Qingdao, 266580, People's Republic of China
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11
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Wang L, Ren X, Chen L, Mao H, Gao D, Zhou Y. Constructing recyclable photocatalytic BiOBr/Ag nanowires/cotton fabric for efficient dye degradation under visible light. ARAB J CHEM 2023. [DOI: 10.1016/j.arabjc.2023.104624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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12
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He R, Wang Z, Deng F, Li X, Peng Y, Deng Y, Zou J, Luo X, Liu X. Tunable Bi-bridge S-scheme Bi2S3/BiOBr heterojunction with oxygen vacancy and SPR effect for efficient photocatalytic reduction of Cr(VI) and industrial electroplating wastewater treatment. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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13
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Su Y, Ding H, Sun M, Liu X, Dai C, Li Y, Xu G, Zeng C. Construction of BiOIO 3/AgIO 3 Z-Scheme Photocatalysts for the Efficient Removal of Persistent Organic Pollutants under Natural Sunlight Illumination. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:16163-16171. [PMID: 36520846 DOI: 10.1021/acs.langmuir.2c02903] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The efficient removal of persistent organic pollutants (POPs) in natural waters is vital for human survival and sustainable development. Photocatalytic degradation is a feasible and cost-effective strategy to completely disintegrate POPs at room temperature. Herein, we develop a series of direct Z-scheme BiOIO3/AgIO3 hybrid photocatalysts via a facile deposition-precipitation method. Under natural sunlight irradiation, the light intensity of which is ∼40 mW/cm2, a considerable rate constant of 0.185 min-1 for photodecomposing 40 mg/L MO is obtained over 0.5 g/L Bi@Ag-5 composite photocatalyst powder, about 92.5 and 5.3 times higher than those of pristine AgIO3 and BiOIO3. The photoactivity of Bi@Ag-5 for photodecomposing MO under natural sunlight illumination surpasses most of the reported photocatalysts under Xe lamp illumination. After natural sunlight irradiation for 20 min, 95% of MO, 82% of phenol, 78% of 2,4-DCP, 54% of ofloxacin, and 88% of tetracycline hydrochloride can be photodecomposed over Bi@Ag-5. Relative to the commercial photocatalyst TiO2 (P25), Bi@Ag-5 exhibits greatly higher photoactivity for the treatment of MO-phenol-tetracycline hydrochloride mixture pollutants in the scale-up experiment of 500 mL of solution, decreasing COD, TOC, and chromaticity value by 52, 19, and 76%, respectively, after natural sunlight irradiation for 40 min. The photodegradation process and mechanism of MO have been systematically investigated and proposed. This work provides an archetype for designing efficient photocatalysts to remove POPs.
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Affiliation(s)
- Yao Su
- State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, Institute of Advanced Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Haojia Ding
- State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, Institute of Advanced Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Miaofei Sun
- State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, Institute of Advanced Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Xin Liu
- State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, Institute of Advanced Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Chunhui Dai
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang 330013, China
| | - Yuqin Li
- State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, Institute of Advanced Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
| | - Guodong Xu
- Institute of Advanced Scientific Research (iASR), Analysis and Testing Center, Jiangxi Normal University, Nanchang 330022, Jiangxi, China
| | - Chao Zeng
- State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, Institute of Advanced Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China
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14
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Sun C, Hu J, Wu L, Xia Q, Jiao F. Construction of a Novel Visible-Light-Driven Z-Scheme NiAl-LDH Modified (BiO) 2CO 3 Heterostructure for Enhanced Photocatalytic Degradation Antibiotics Performance in Natural Water Bodies. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c03700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Chun Sun
- School of Chemistry and Chemical Engineering, Central South University, Changsha410083, China
| | - Jun Hu
- School of Chemistry and Chemical Engineering, Central South University, Changsha410083, China
| | - Lixu Wu
- School of Chemistry and Chemical Engineering, Central South University, Changsha410083, China
| | - Qinglin Xia
- School of Physics and Electronics, Central South University, Changsha410083, China
| | - Feipeng Jiao
- School of Chemistry and Chemical Engineering, Central South University, Changsha410083, China
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A photocatalytic degradation self-cleaning composite membrane for oil-water separation inspired by light-trapping effect of moth-eye. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.121337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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16
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Ri CN, Hwang KJ, Kim TN, Ro YH, Ri JS. The Synthesis of a Novel Ternary Bi/Bi2WO6/Amorphous Bi4V2O11 Heterojunction Photocatalyst with Enhanced Visible-Light-Driven Photocatalytic Reduction of Cr(VI). Catal Letters 2022. [DOI: 10.1007/s10562-022-04216-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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17
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Bisht K, Kumar G, Dutta RK. Amine-Functionalized Crystalline Carbon Nanodots Decorated on Bi 2WO 6 Nanoplates as Solar Photocatalysts for Efficient Degradation of Tetracycline and Ciprofloxacin. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c02635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Krishanan Bisht
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee247667, India
| | - Gandharve Kumar
- Centre for Nanotechnology, Indian Institute of Technology Roorkee, Roorkee247667, India
| | - Raj Kumar Dutta
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee247667, India
- Centre for Nanotechnology, Indian Institute of Technology Roorkee, Roorkee247667, India
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Ultrasonic-Assisted Synthesis of α-Fe2O3@TiO2 Photocatalyst: Optimization of Effective Factors in the Fabrication of Photocatalyst and Removal of Non-biodegradable Cefixime via Response Surface Methodology-Central Composite Design. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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19
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Multifunctional magnetic bentonite induced hierarchical BiOBr coupling Bi nanoparticles and oxygen vacancies for enhanced photocatalytic performance. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122555] [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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20
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Dou X, Huang H, Chen Y, Shi H. Simple preparation of copper-doped 2D BiOBr nanosheets for efficiently enhanced chemical adsorption and elimination of tetracycline. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128965] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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21
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Zhao Y, Guo H, Liu J, Xia Q, Liu J, Liang X, Liu E, Fan J. Effective photodegradation of rhodamine B and levofloxacin over CQDs modified BiOCl and BiOBr composite: Mechanism and toxicity assessment. J Colloid Interface Sci 2022; 627:180-193. [PMID: 35842968 DOI: 10.1016/j.jcis.2022.07.046] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 07/06/2022] [Accepted: 07/07/2022] [Indexed: 10/17/2022]
Abstract
In this contribution, carbon quantum dots (CQDs) modified 3D-flower like BiOX (X = Cl, Br, I) photocatalyst were successfully prepared via a facile mechanical compounding method. The crystal structure, surface composition, morphologies, optical properties and photocatalytic activities were investigated in detail. The photocatalytic activity of the as-obtained photocatalyst were evaluated by degradation of rhodamine B (RhB) and Levofloxacin (LEV) under near IR-UV-vis light irradiation, the CQDs/BiOX composite displayed enhanced photocatalytic activity as compared with individual BiOX materials. The CQDs/BiOX composite had the outstanding light harvesting and electron transfer ability because of the ordered ultrathin nanosheet structure of the BiOX, the formation of metal Bi under photoinduction, and the synergistic effects between CQDs and pure BiOX. Antibacterial activity and effects on Rye seeds growth of the LEV degradation intermediate were also researched. Reactive-species-trapping experiments exhibited that h+ and O2- were the active reactive species during photodegradation process. This work provided an effective and simple strategy for designing QDs modified Bi-rich oxyhalides in organic pollutant containing wastewater treatment.
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Affiliation(s)
- Yanyan Zhao
- College of Biology Pharmacy and Food Engineering, Shangluo University, Shangluo 726000, PR China.
| | - Hongxia Guo
- Nursing College of Anhui Sanlian University, 230000, PR China
| | - Jie Liu
- College of Biology Pharmacy and Food Engineering, Shangluo University, Shangluo 726000, PR China
| | - Qiong Xia
- College of Biology Pharmacy and Food Engineering, Shangluo University, Shangluo 726000, PR China
| | - Jifang Liu
- The College of Life Sciences, Northwest University, Xi'an 710069, PR China
| | - Xuhua Liang
- College of Biology Pharmacy and Food Engineering, Shangluo University, Shangluo 726000, PR China
| | - Enzhou Liu
- School of Chemical Engineering, Northwest University, Xi'an 710069, PR China
| | - Jun Fan
- College of Food Science and Technology, Northwest University, Xi'an 710069, PR China.
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22
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Ge J, Zhang Z, Ouyang Z, Shang M, Liu P, Li H, Guo X. Photocatalytic degradation of (micro)plastics using TiO 2-based and other catalysts: Properties, influencing factor, and mechanism. ENVIRONMENTAL RESEARCH 2022; 209:112729. [PMID: 35065068 DOI: 10.1016/j.envres.2022.112729] [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] [Received: 10/03/2021] [Revised: 01/09/2022] [Accepted: 01/10/2022] [Indexed: 05/26/2023]
Abstract
(Micro)plastics pollution has raised global concern because of its potential threat to the biota. The review on recent developments of photocatalytic degradation of (micro)plastics is still insufficient. In this study, we have discussed various bare and composites photocatalysts involved in the photocatalytic degradation of (micro)plastics. The photocatalytic mechanisms and factors affecting the degradation were also discussed. To improve the performance of photocatalysts, their surface is modified with metal or non-metal dopants. These doped photocatalysts are then compounded with a variety of environmentally friendly and nontoxic polymers to prepare multifunctional composites. The generation of reactive oxygen species (ROS) plays an important role in the photocatalytic degradation of (micro)plastics, and superoxide ions (O2-) and hydroxyl radicals (OH) participate in the photocatalytic degradation, leading to the breaking of the polymer chain and the production of some intermediates. Although satisfactory progress has been achieved in the photodegradation of (micro)plastics, most photocatalytic degradation technologies investigated to date cannot realize the complete mineralization of (micro)plastics. Furthermore, based on the current challenges of the existing photocatalytic degradation technologies, perspectives for future research directions have been proposed. This review presents a systematic summary of the progress made in the photocatalytic degradation of (micro)plastics and offers a comprehensive reference for future research on improving the (micro)plastics photocatalytic degradation efficiency.
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Affiliation(s)
- Jianhua Ge
- School of Earth and Environment, Anhui University of Science & Technology, Huainan, Anhui Province, 232001, China
| | - Zhiping Zhang
- School of Earth and Environment, Anhui University of Science & Technology, Huainan, Anhui Province, 232001, China
| | - Zhuozhi Ouyang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Plant Nutrition and the Agro-environment in Northwest China, Ministry of Agriculture and Rural Affairs, Yangling, Shaanxi, 712100, China.
| | - Mengxin Shang
- School of Earth and Environment, Anhui University of Science & Technology, Huainan, Anhui Province, 232001, China
| | - Peng Liu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Huang Li
- School of Earth and Environment, Anhui University of Science & Technology, Huainan, Anhui Province, 232001, China
| | - Xuetao Guo
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, 712100, China; Key Laboratory of Plant Nutrition and the Agro-environment in Northwest China, Ministry of Agriculture and Rural Affairs, Yangling, Shaanxi, 712100, China.
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Shi H, Xie Y, Wang W, Zhang L, Zhang X, Shi Y, Fan J, Tang Z. In-situ construction of step-scheme MoS 2/Bi 4O 5Br 2 heterojunction with improved photocatalytic activity of Rhodamine B degradation and disinfection. J Colloid Interface Sci 2022; 623:500-512. [PMID: 35597019 DOI: 10.1016/j.jcis.2022.04.148] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Revised: 04/19/2022] [Accepted: 04/25/2022] [Indexed: 01/24/2023]
Abstract
In this paper, a novel Step-scheme MoS2/Bi4O5Br2 heterojunction was fabricated through the in-situ mechanical agitation method and the photocatalytic activity of that was examined by the photocatalytic degradation Rhodamine B (RhB) and inactivation of E.coli under visible light irradiation (λ > 420 nm). The Step-scheme MoS2/Bi4O5Br2 heterojunctions displayed the enhanced photocatalytic ability compared to pure Bi4O5Br2 and MoS2 and the MoS2/Bi4O5Br2-3% (MS/BOB-3) heterojunction exhibited the strongest photocatalytic activity which can completely inactivate the 1 × 107 cfu/mL with 180 min and degrade RhB (10 mg/L) with 24 min visible light irradiation, respectively. The photocatalytic mechanism of the MoS2/Bi4O5Br2 heterojunction is was attributed to the generated active species (h+, ·O2- and ·OH) which can effectively destroy RhB molecular and cell-membrane of bacterial as demonstrated by multiple techniques such as LC-MS and fluorescence stain. Additionally, characterization results disclosed that the transfer pathway of charge carriers of constructed MoS2/Bi4O5Br2 heterojunction followed the Step-scheme channel, which not only facilitated the separation and migration of the photo-generated charge carriers, but also improved the light absorption ability of the samples and resulting in the promoted photocatalytic performance of MoS2/Bi4O5Br2 heterojunction. This work paves a new idea to develop novel bismuth oxyhalide-based photocatalytic system for wastewater purification.
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Affiliation(s)
- Huanxian Shi
- School of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang 712046, PR China; Shaanxi University of Chinese Medicine/Shaanxi Provice Key Laboratory of New Drugs and Chinese Medicine Foundation Research, Pharmacy College. Xianyang 9712083, PR China; Shaanxi University of Chinese Medicine/Shaanxi Collaborative Innovation Center of Idustrialization of Tradition Chinese Medicine Resources, Xianyang 712083, PR. China
| | - Yundong Xie
- School of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang 712046, PR China
| | - Wei Wang
- School of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang 712046, PR China
| | - Lihua Zhang
- School of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang 712046, PR China; Shaanxi University of Chinese Medicine/Shaanxi Provice Key Laboratory of New Drugs and Chinese Medicine Foundation Research, Pharmacy College. Xianyang 9712083, PR China
| | - Xiaofei Zhang
- School of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang 712046, PR China
| | - Yajun Shi
- School of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang 712046, PR China; Shaanxi University of Chinese Medicine/Shaanxi Provice Key Laboratory of New Drugs and Chinese Medicine Foundation Research, Pharmacy College. Xianyang 9712083, PR China
| | - Jun Fan
- College of Food Science and Engineering, Northwest University, Xi'an 710069, PR China.
| | - Zhishu Tang
- School of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang 712046, PR China; Shaanxi University of Chinese Medicine/Shaanxi Collaborative Innovation Center of Idustrialization of Tradition Chinese Medicine Resources, Xianyang 712083, PR. China.
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Iqbal T, Ashraf M, Masood A. Simple synthesis of WO3 based activated carbon co-doped CuS composites for photocatalytic applications. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109322] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Zhang Z, Zhang Y, Li Z, Yang X, Yang X, Peng Y, Yu J. Preparation, Characterization and Application of Epitaxial Grown BiOBr (110) Film on ZnFe2O4 Surface with Enhanced Photocatalytic Fenton Oxidation Properties. NANOMATERIALS 2022; 12:nano12091508. [PMID: 35564217 PMCID: PMC9105623 DOI: 10.3390/nano12091508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Revised: 04/19/2022] [Accepted: 04/21/2022] [Indexed: 12/22/2022]
Abstract
A novel BiOBr photocatalyst was epitaxially grown in situ onto the surface of ZnFe2O4, a ferroelectric material with a strong polarization effect. The formatted BiOBr/ZnFe2O4 composite (BOB/ZFO) showed excellent photocatalytic degradation performance of tetracycline antibiotics (TCs). One of the composites with ZnFe2O4 content of 10% (BOB/ZFO-10) showed the best properties; the degradation efficiency of TCs upon visible light irradiation for 180 min was 99.2%, which was 3.58 times higher than that of pure phase BiOBr. The functions of ZnFe2O4 are assumed to be such that the addition of this ferroeletric material not only regulated the spontaneous polarization of BiOBr in the process of synthesis, but also resulted in the construction of Z-scheme heterostructures due to the appropriate staggered band structure of BiOBr and ZnFe2O4. In the presence of ferroelectric material ZnFe2O4, the local structure of BiOBr may be distorted accordingly, resulting in preferential growth of a (110) crystal facet of BiOBr and enhancement of spontaneous polarization, which promotes the efficient separation of photogenerated electron-hole pairs of ZnFe2O4 and BiOBr, and therefore enhances the redox capacity of the photocatalytic degradation of organic pollutants.
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Affiliation(s)
| | - Yan Zhang
- Correspondence: (Y.Z.); (J.Y.); Tel./Fax: +86-532-85955529 (Y.Z.)
| | | | | | | | | | - Jianqiang Yu
- Correspondence: (Y.Z.); (J.Y.); Tel./Fax: +86-532-85955529 (Y.Z.)
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Zhao Y, Li Z, Wei J, Li X, Shi H, Cao B, Fan J. Efficient photodegradation of cefixime catalyzed by a direct Z-scheme CQDs-BiOBr/CN composite: Performance, toxicity evaluation and photocatalytic mechanism. CHEMOSPHERE 2022; 292:133430. [PMID: 34971628 DOI: 10.1016/j.chemosphere.2021.133430] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 12/17/2021] [Accepted: 12/23/2021] [Indexed: 06/14/2023]
Abstract
Development of low-cost, nontoxic, highly efficient performance photocatalyst for water pollution control engineering is critical for environmental remediation. In this contribution, a direct Z-scheme heterojunction based on C quantum dot (CQDs), bismuth oxybromide (BiOBr) and bulk graphitic carbon nitride (g-C3N4, CN) (CQDs-BiOBr/CN composite) with outstanding photocatalytic activity and good reusability is successfully fabricated though a hydrothermal procedure for cefixime antibiotic photodegradation. In particular, the CQDs-BiOBr/CN composite possess the best cefixime degradation effect, the degradation rate is about 92.82% within 120 min. The enhancement photocatalytic activity of CQDs-BiOBr/CN can be ascribed to the improved light-harvest ability, the excellent adsorption performance, the efficient charge transportation and separation capability. A possible degradation pathway of cefixime is proposed base on HPLC-MS. Toxicity experiments demonstrate that the antibiotic activity of cefixime is effectively deactivated after degradation process, and which is no toxic effect for Rye seeds in deionized water. The CQDs-BiOBr/CN also displays the excellent photoactivation activity towards Escherichia coli (E. coli). Reactive-species-trapping experiments show that hydroxyl radical (⋅OH) and superoxide radical (⋅O2-) are the active reactive species in the photodegradation process. The CQDs-BiOBr/CN composite demonstrate an effective potential practical application in antibiotic pollutants degradation from wastewater.
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Affiliation(s)
- Yanyan Zhao
- College of Biology Pharmacy and Food Engineering, Shangluo University, Shangluo, 726000, PR China; Shaanxi Qinling Industrial Technology Research Institute of Special Biological Resources, Shangluo Technology & Research Institute of Chinese Medicinal Materials Integrated Pest Management, Shangluo, 726000, PR China.
| | - Zhenyu Li
- College of Biology Pharmacy and Food Engineering, Shangluo University, Shangluo, 726000, PR China
| | - Jing Wei
- College of Biology Pharmacy and Food Engineering, Shangluo University, Shangluo, 726000, PR China; Shaanxi Qinling Industrial Technology Research Institute of Special Biological Resources, Shangluo Technology & Research Institute of Chinese Medicinal Materials Integrated Pest Management, Shangluo, 726000, PR China.
| | - Xiaolong Li
- College of Chemical Engineering and Modern Materials, Shangluo University, Shangluo, 726000, PR China.
| | - Huanxian Shi
- School of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang, 712046, PR China.
| | - Baoyue Cao
- College of Chemical Engineering and Modern Materials, Shangluo University, Shangluo, 726000, PR China
| | - Jun Fan
- College of Food Science and Technology, Northwest University, Xi'an, 710069, PR China.
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Zhao Y, Ji C, Wang Y, Liang X, Fan J. Green and efficient degradation of cefixime by 3D flower-like BiOBr: Performance and degradation pathway. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.128024] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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28
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Jia X, Shen Z, Han Q, Bi H. Rod-like Bi4O5I2/Bi4O5Br2 step-scheme heterostructure with oxygen vacancies synthesized by calcining the solid solution containing organic group. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(20)63768-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Wu J, Alipouri Y, Luo H, Zhong L. Ultraviolet photocatalytic oxidation technology for indoor volatile organic compound removal: A critical review with particular focus on byproduct formation and modeling. JOURNAL OF HAZARDOUS MATERIALS 2022; 421:126766. [PMID: 34396962 DOI: 10.1016/j.jhazmat.2021.126766] [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: 05/26/2021] [Revised: 07/21/2021] [Accepted: 07/26/2021] [Indexed: 06/13/2023]
Abstract
Photocatalytic oxidation (PCO)-based air filters are gaining attention owing to their capacity for indoor pollutant removal. This review summarized the application of ultraviolet-photocatalytic oxidation (UV-PCO) in heating, ventilation, and air conditioning (HVAC) systems, including the modeling studies, reactor designs, the influence of operational conditions, with emphasis on the common issue of byproduct generation, and the resulting indoor byproduct exposure levels. As a result, the concentrations of the typical byproducts for the most challenging pollutants were relatively low, except for the PCO of ethanol. Hence, UV-PCO is not recommended for buildings with high ethanol concentrations. Based on the formation of the formaldehyde, a new exposure-based evaluation standard for UV-PCO was developed to evaluate the feasibility of integrating UV-PCO reactors into an HVAC system. Then, applying the newly developed evaluation standard on a developed database (data size: 174) from the literature, 32.5% of the cases were identified as suitable for HVAC system applications in residential and commercial buildings, and all cases could be used for industrial buildings. Finally, a case study was conducted to develop a support vector machine (SVM) classification model with good accuracy, and challenging compound types, inlet concentrations, and air velocity were found to be the main parameters affecting the applicability of UV-PCO.
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Affiliation(s)
- Jing Wu
- Department of Mechanical Engineering, University of Alberta, 9211-116 street NW, Edmonton, Alberta, Canada T6G 1H9
| | - Yousef Alipouri
- Department of Mechanical Engineering, University of Alberta, 9211-116 street NW, Edmonton, Alberta, Canada T6G 1H9
| | - Hao Luo
- Department of Mechanical Engineering, University of Alberta, 9211-116 street NW, Edmonton, Alberta, Canada T6G 1H9
| | - Lexuan Zhong
- Department of Mechanical Engineering, University of Alberta, 9211-116 street NW, Edmonton, Alberta, Canada T6G 1H9.
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30
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Qin M, Jin K, Li X, Wang R, Zhao Y, Wang H. Bi nanosphere-decorated oxygen-vacancy BiOBr hollow microspheres with exposed (110) facets to enhance the photocatalytic performance for the degradation of azo dyes. NEW J CHEM 2022. [DOI: 10.1039/d2nj02076a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile preparation strategy is proposed for a novel highly-active composite photocatalyst comprising Bi nanosphere-decorated oxygen-vacancy BiOBr hollow microspheres with exposed (110) facets for the efficient degradation of azo dyes.
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Affiliation(s)
- Mian Qin
- College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, 163318, China
| | - Kejie Jin
- College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, 163318, China
| | - Xinyi Li
- College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, 163318, China
| | - Rui Wang
- College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, 163318, China
| | - Yang Zhao
- College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, 163318, China
| | - Huan Wang
- College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, 163318, China
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31
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Pang Z, Wang B, Yan X, Wang C, Yin S, Li H, Xia J. CdBiO2Br nanosheets in situ strong coupling to carbonized polymer dots and improved photocatalytic activity for organic pollutants degradation. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.01.054] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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32
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Jia K, Liu G, Lang D, Chen S, Yang C, Wu R, Wang W, Wang J. Fast photodegradation of antibiotics and dyes by anionic surfactant-aided CdS/ZnO nanodispersion. NEW J CHEM 2022. [DOI: 10.1039/d2nj01187e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photocatalytic technology has broad applications in energy and environmental science. In this study, we synthesized a type II heterojunction CdS/ZnO nanodispersion by means of one-pot precipitation. Different from previous studies,...
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33
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Photocatalytic-controlled olefin isomerization over WO3– using low-energy photons up to 625 nm. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(21)63815-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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34
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Novel S-scheme 2D/2D BiOBr/g-C3N4 heterojunctions with enhanced photocatalytic activity. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63765-2] [Citation(s) in RCA: 98] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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35
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Enhanced visible-light-induced photocatalytic NOx degradation over (Ti,C)-BiOBr/Ti3C2Tx MXene nanocomposites: Role of Ti and C doping. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118815] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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36
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Enhanced photocatalytic activity of bismuth oxychloride by in-situ introducing oxygen vacancy. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126705] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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37
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Zhou Z, Zhang L, Su W, Li Y, Zhang G. Facile fabrication of AgI/Sb 2O 3 heterojunction photocatalyst with enhanced visible-light driven photocatalytic performance for efficient degradation of organic pollutants in water. ENVIRONMENTAL RESEARCH 2021; 197:111143. [PMID: 33865821 DOI: 10.1016/j.envres.2021.111143] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 03/29/2021] [Accepted: 03/29/2021] [Indexed: 06/12/2023]
Abstract
The construction of heterojunction is considered as a promising approach to designing highly effective visible-light driven photocatalysts. In this research, the AgI/Sb2O3 heterojunction photocatalyst was synthesized by a simple in situ deposition-precipitation procedure, which was supported by XPS results. Among the prepared samples, the 60% AgI/Sb2O3 samples exhibited the best ARG degradation ratio (98.3%) in 1 h under visible light irradiation, while the pure Sb2O3 and AgI exhibited almost none photocatalytic performance. The trapping experiments and EPR proved that the photo-generated ·O2- and ·OH made major contributions to the photocatalytic degradation of ARG by the 60% AgI/Sb2O3 samples. The enhanced photocatalytic performance of AgI/Sb2O3 heterojunction photocatalysts was ascribed to that the e- produced in the CB of AgI would be transferred to the empty CB of Sb2O3, which could effectively promote separation of photo-induced carries. More importantly, the transfer of electrons from AgI to Sb2O3 would be in favor of restraining the reduction of Ag+ to Ag0 resulting in the good stability of heterojunction photocatalysts. The heterojunction photocatalyst provided in this work might be a prospective candidate for decontamination of water.
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Affiliation(s)
- Ziyue Zhou
- Hubei Key Laboratory of Mineral Resources Processing and Environment, State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, China
| | - Leguan Zhang
- College of Municipal and Environmental Engineering, Henan University of Urban Construction, Pingdingshan, 467036, China
| | - Wuao Su
- Urban Construction College, Wuchang Shouyi University, Wuhan, 430070, China
| | - Yuan Li
- Hubei Key Laboratory of Mineral Resources Processing and Environment, State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, China.
| | - Gaoke Zhang
- Hubei Key Laboratory of Mineral Resources Processing and Environment, State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, 122 Luoshi Road, Wuhan, 430070, China; Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou, 450052, China.
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38
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Hu C, Tian N, Zhang Y, Huang H. Facet-selective charge separation in two-dimensional bismuth-based photocatalysts. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00371b] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
In this review, we summarize recent advances in the facet design of bismuth-based single-crystal plates based on facet-dependent charge separation for photocatalytic reactions, and the manipulation of the spatial charge separation is highlighted.
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Affiliation(s)
- Cheng Hu
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes
- National Laboratory of Mineral Materials
- School of Materials Science and Technology
- China University of Geosciences
- Beijing 100083
| | - Na Tian
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes
- National Laboratory of Mineral Materials
- School of Materials Science and Technology
- China University of Geosciences
- Beijing 100083
| | - Yihe Zhang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes
- National Laboratory of Mineral Materials
- School of Materials Science and Technology
- China University of Geosciences
- Beijing 100083
| | - Hongwei Huang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes
- National Laboratory of Mineral Materials
- School of Materials Science and Technology
- China University of Geosciences
- Beijing 100083
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39
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Self-grown oxygen vacancies-rich CeO 2/BiOBr Z-scheme heterojunction decorated with rGO as charge transfer channel for enhanced photocatalytic oxidation of elemental mercury. J Colloid Interface Sci 2020; 587:402-416. [PMID: 33370662 DOI: 10.1016/j.jcis.2020.12.005] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 11/06/2020] [Accepted: 12/02/2020] [Indexed: 11/23/2022]
Abstract
Oxygen vacancy-rich CeO2/BiOBr was prepared via solvothermal method combined with rGO to design a Z-scheme heterojunction, which was used for photocatalytic oxidation of gaseous elemental mercury. The Z-scheme heterojunction constructed by interface engineering significantly promotes charge carriers transfer at the interface. Moreover, the surface oxygen vacancies and Ce3+/Ce4+ redox centers tend to capture electrons to accelerate the Z-scheme path of charge transfer to maintain efficient redox performance and facilitate molecular oxygen activation to boost photocatalytic removal of Hg0. The collaboration of oxygen vacancies, Ce3+/Ce4+ and heterojunction enhances the photocatalytic oxidation activity, which achieves a removal efficiency of 76.53%, which is 1.29 times that of BiOBr and 1.91 times that of CeO2. The effect of actual flue gas components (SO2, NO and HCl) on the performance of photocatalytic Hg0 removal was further investigated. Combined with DFT theoretical calculations, the photocatalytic reaction mechanism of Z-scheme heterojunction with oxygen vacancies-rich was proposed. It provides a feasible strategy for the development of high-efficiency Z-scheme heterojunction photocatalytic system for environmental purification.
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40
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Enesca A, Cazan C. Volatile Organic Compounds (VOCs) Removal from Indoor Air by Heterostructures/Composites/Doped Photocatalysts: A Mini-Review. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1965. [PMID: 33022974 PMCID: PMC7599939 DOI: 10.3390/nano10101965] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 09/20/2020] [Accepted: 09/29/2020] [Indexed: 11/18/2022]
Abstract
The impact of volatile organic compounds (VOCs) on indoor air quality and, furthermore, on human health is still a subject of research investigations considering the large increase in forms of cancer and related diseases. VOCs can be 10 times higher in indoor air concentrations then that of the outdoors, as a consequence of emissions from electronics, building materials and consumer goods. Direct transformation of VOCs in mineralization products seems to be an alternative to reduce indoor air contaminants. The advantage of photocatalysis implementation in indoor air treatment is given by the absence of additional chemicals (such as H2O2) and waste. The present mini-review presents a comparative study on VOCs photocatalytic removal considering the photocatalyst composition, morphology and specific surface. The sheet-like morphology seems to provide a higher number of active sites which may contribute to oxidative reactions. The insertion of materials able to increase light absorbance or to mediate the charge carrier's transport will have a beneficial impact on the overall photocatalytic efficiency. Additionally, surface chemistry must be considered when developing photocatalysts for certain gas pollutants in order to favor molecule absorbance in the interfacial region. An energy consumption perspective is given based on the light intensity and irradiation period.
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Affiliation(s)
- Alexandru Enesca
- Product Design, Mechatronics and Environmental Department, Transilvania University of Brasov, Eroilor 29 Street, 35000 Brasov, Romania;
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41
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Huang M, Li J, Su W, Huang X, Li B, Fan M, Dong L, He H. Oriented construction of S-doped, exposed {001} facet BiOBr nanosheets with abundant oxygen vacancies and promoted visible-light-driven photocatalytic performance. CrystEngComm 2020. [DOI: 10.1039/d0ce01187h] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
S-doping orients the facet growth of BiOBr nanosheets from original exposed {010} plane towards {001}-dominant plane, resulting in narrower bandgap energy, higher efficient charges separation and oxygen vacancies (OVs) concentration.
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Affiliation(s)
- Meina Huang
- Center for Biomedical Photonics & College of Physics and Optoelectronic Engineering
- Shenzhen University
- Shenzhen 518060
- China
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology
| | - Ju Li
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology
- School of Chemistry and Chemical Engineering
- Guangxi University
- Nanning 530004
- PR China
| | - Wenli Su
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology
- School of Chemistry and Chemical Engineering
- Guangxi University
- Nanning 530004
- PR China
| | - Xindi Huang
- Guangxi Research Institute of Metrology Test
- Nanning 530017
- PR China
| | - Bin Li
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology
- School of Chemistry and Chemical Engineering
- Guangxi University
- Nanning 530004
- PR China
| | - Minguang Fan
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology
- School of Chemistry and Chemical Engineering
- Guangxi University
- Nanning 530004
- PR China
| | - Lihui Dong
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology
- School of Chemistry and Chemical Engineering
- Guangxi University
- Nanning 530004
- PR China
| | - Haixiang He
- Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology
- School of Chemistry and Chemical Engineering
- Guangxi University
- Nanning 530004
- PR China
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