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Hu X, Yang Y, Li N, Huang C, Zhou Y, Zhang L, Zhong Y, Liu Y, Wang Y. Interface-regulated S-type core-shell PCN-224@TiO 2 heterojunction for visible-light-driven generation of singlet oxygen for selective photooxidation of 2-chloroethyl ethyl sulfide. J Colloid Interface Sci 2024; 674:791-804. [PMID: 38955010 DOI: 10.1016/j.jcis.2024.06.205] [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: 05/20/2024] [Revised: 06/22/2024] [Accepted: 06/26/2024] [Indexed: 07/04/2024]
Abstract
Selective oxidation of sulfur mustard gas (HD) to non-toxic sulfoxide by the visible-light-catalyzed generation of singlet oxygen (1O2) is a promising degradation strategy. Although PCN-224 can absorb visible light, it suffers from rapid electron-hole recombination and low redox capacity, which limits the performance of HD degradation. Titanium dioxide (TiO2) is an excellent photocatalyst but it lacks visible-light-activity in degrading HD. In this study, PCN-224@TiO2 heterojunction with S-type core-shell structure was synthesized by in-situ growth method to prolong the visible light absorption capacity of TiO2 and inhibit the rapid recombination of PCN-224. The interface formation and internal electric field were optimized by adjusting the Zr/Ti ratio to enhance the charge transfer, redox capacity, electron-hole separation, and visible light absorption. In this study, the formation of heterojunction composites based on Zr-O-Ti linkages is demonstrated by a series of characterization methods. It is demonstrated by experiments and theoretical calculations that PCN-224@TiO2 can generate nearly 100 % 1O2 under visible light conditions without a sacrificial agent, resulting in efficient and selective oxidation of 2-chloroethyl ethyl sulfide (CEES), a simulant of HD, to non-toxic sulfoxide form.
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Affiliation(s)
- Xin Hu
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, PR China; Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, PR China
| | - Ying Yang
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Nan Li
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Chengcheng Huang
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Yunshan Zhou
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, PR China.
| | - Lijuan Zhang
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, PR China.
| | - Yuxu Zhong
- Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, PR China.
| | - Yanqin Liu
- Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, PR China
| | - Yao Wang
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, PR China
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2
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Sun D, Chen Y, Yu X, Yin Y, Tian G. Novel defect-transit dual Z-scheme heterojunction: Sulfur-doped carbon nitride nanotubes loaded with bismuth oxide and bismuth sulfide for efficient photocatalytic amine oxidation. J Colloid Interface Sci 2024; 674:225-237. [PMID: 38936079 DOI: 10.1016/j.jcis.2024.06.140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 06/18/2024] [Accepted: 06/19/2024] [Indexed: 06/29/2024]
Abstract
The rational design of Z-scheme heterojunction hybrid photocatalysts is considered a promising way to achieve high photocatalytic activity. In this study, a dual Z-scheme heterojunction with bismuth sulfide (Bi2S3) nanorods and bismuth oxide (Bi2O3) nanoparticles anchored Sulfur-doped carbon nitride (S-CN) nanotubes (Bi2S3/S-CN/Bi2O3) is designed and fabricated through the ordinal metal ion adsorption, pyrolysis, and sulfidation processes using supramolecular rods as precursor. Compared with pristine Bi2S3, Bi2O3, and CN, the dual Z-scheme tube-shaped Bi2S3/S-CN/Bi2O3 catalyst exhibited a significantly improved photocatalytic activity in amine oxidation. The optimized Bi2S3/S-CN/Bi2O3 nanostructure exhibits a 97.6 % benzylamine conversion and 99.4 % imine selectivity within 4 h under simulated solar light irradiation. The excellent activity of Bi2S3/S-CN/Bi2O3 nanotubes can be attributed to the characteristic hollow defect band structure and efficient charge separation and transfer achieved by the dual Z-scheme charge transfer mechanism, which was systematically studied using electron spin resonance spectroscopy, Kelvin probe force microscope, and other techniques. The optimized dual Z-scheme heterojunction hybrid photocatalyst maintains the high oxidizing ability of Bi2S3 and Bi2O3 and the excellent reducing ability of CN, thereby significantly enhancing the photocatalytic activity. This research provides a facile and feasible synthesis strategy for designing dual Z-scheme heterojunctions with defect band structure to improve the photocatalytic activity.
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Affiliation(s)
- Dan Sun
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China
| | - Yajie Chen
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China
| | - Xinyan Yu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China
| | - Yuejia Yin
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China
| | - Guohui Tian
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China.
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3
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Zhou D, Li D, Chen Z. Recent advances in ternary Z-scheme photocatalysis on graphitic carbon nitride based photocatalysts. Front Chem 2024; 12:1359895. [PMID: 38633985 PMCID: PMC11021764 DOI: 10.3389/fchem.2024.1359895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 01/18/2024] [Indexed: 04/19/2024] Open
Abstract
Due to its excellent photocatalytic performance over the last few years, graphitic-like carbon nitride (g-C3N4) has garnered considerable notice as a photocatalyst. Nevertheless, several limitations, including small surface area, the rates at which photo-generated electrons and holes recombine are swift, and the inefficient separation and transport of photoexcited carriers continue to impede its solar energy utilization. To overcome those limitations in single-component g-C3N4, constructing a heterogeneous photocatalytic system has emerged as an effective way. Among the various studies involving the incorporation of hetero composite materials to design heterojunctions, among the most promising approaches is to assemble a Z-scheme photocatalytic configuration. The Z-scheme configuration is essential because it facilitates efficient photocarrier separation and exhibits superior redox ability in separated electrons and holes. Moreover, ternary composites have demonstrated enhanced photocatalytic activities and reinforced photostability. Ternary Z-scheme heterostructures constructed with g-C3N4 possess all the above-mentioned merits and provide a pioneering strategy for implementing photocatalytic systems for environmental and energy sustainability. A summary of the latest technological advancements toward design and fabrication in ternary all-solid-state Z-scheme (ASSZ) and direct Z-scheme (DZ) photocatalysts built on g-C3N4 is presented in this review. Furthermore, the review also discusses the application of ternary Z-scheme photocatalytic architecture established on g-C3N4.
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Affiliation(s)
- Dantong Zhou
- College of Electronic and Information Engineering, Anshun University, Anshun, China
| | - Dongxiang Li
- College of Electronic and Information Engineering, Anshun University, Anshun, China
| | - Zhi Chen
- College of Materials and Chemistry, China Jiliang University, Hangzhou, China
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4
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Sun T, Gao P, He Y, Wu Z, Liu J, Rong X. Dual Z-scheme TCN/ZnS/ ZnIn 2S 4 with efficient separation for photocatalytic nitrogen fixation. J Colloid Interface Sci 2024; 654:602-611. [PMID: 37864867 DOI: 10.1016/j.jcis.2023.10.023] [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: 08/05/2023] [Revised: 09/28/2023] [Accepted: 10/06/2023] [Indexed: 10/23/2023]
Abstract
The development of an efficient catalyst that can use solar energy for NH3 production is of great significance in solving the environmental and energy crisis caused by the traditional ammonia synthesis process. In this work, a dual Z-scheme tubular carbon nitride/zinc sulfide/zinc indium sulfide ternary composited photocatalyst (TCN/ZnS/ZnIn2S4) with excellent nitrogen photofixation performance under visible light was prepared by self-assembly and hydrothermal methods. The crystal structure studies confirmed that tubular carbon nitride (TCN) had more active sites that could promote N2 adsorption. The photochemical studies proved that the double charge transfer channel provided by the dual Z-scheme heterojunction could improve the efficiency of electron-hole separation and achieve excellent photocatalytic nitrogen fixation. The ammonia production rate of the TCN/ZnS/ZnIn2S4 catalyst was up to 136.56 μmol/L, and it also has good stability and reusability. This work provides new insight into the development of Z-scheme heterojunction photocatalysts with green and efficient nitrogen fixation.
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Affiliation(s)
- Ting Sun
- School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Ping Gao
- School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Yuqing He
- School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Zhiren Wu
- School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; Institute of Environmental Health and Ecological Security, Jiangsu University, Zhenjiang 212013, China
| | - Jun Liu
- School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xinshan Rong
- School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; TM Advanced Material Technology and Engineering Institute, Changzhou 213251, China.
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5
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Zhao Y, Shu Y, Linghu X, Liu W, Di M, Zhang C, Shan D, Yi R, Wang B. Modification engineering of TiO 2-based nanoheterojunction photocatalysts. CHEMOSPHERE 2024; 346:140595. [PMID: 37951392 DOI: 10.1016/j.chemosphere.2023.140595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 09/27/2023] [Accepted: 10/29/2023] [Indexed: 11/14/2023]
Abstract
Titanium dioxide (TiO2)-based photocatalysts have gained increasing attention for their versatile applications in organic degradation, hydrogen production, air purification, and CO2 reduction. Various TiO2-based heterojunction structures, including type I, type II, Schottky junction, Z-scheme, and S-scheme, have been extensively studied. The current research frontier is centered on the engineering modifications of TiO2-based nanoheterojunction photocatalysts, such as defect engineering, morphological engineering, crystal phase/facet engineering, and multijunction engineering. These modifications enhance carrier transport, separation, and light absorption, thereby improving the photocatalytic performance. Remarkably, this aspect has been less addressed in existing reviews. This review aims to fill this gap by focusing on the engineering modifications of TiO2-based nanoheterojunction photocatalysts. We delve into specific topics like oxygen vacancies, n-p homojunctions, and double defects. The review also systematically discusses the applications of multidimensional heterojunctions and examines carrier transport pathways in heterophase/facet junctions and their interactions with heterojunctions. A comprehensive summary of multijunction systems, including multi-Schottky junctions, semiconductor-based heterojunction-attached Schottky junctions, and multisemiconductor-based heterojunctions, is presented. Lastly, we outline future perspectives in this promising research field. This paper will assist researchers in constructing more efficient TiO2-based nanoheterojunction photocatalysts.
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Affiliation(s)
- Yue Zhao
- Department of Occupational and Environmental Health, School of Public Health, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, 300070, China
| | - Yue Shu
- Department of Occupational and Environmental Health, School of Public Health, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, 300070, China
| | - Xiaoyu Linghu
- Department of Occupational and Environmental Health, School of Public Health, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, 300070, China
| | - Wenqi Liu
- Department of Occupational and Environmental Health, School of Public Health, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, 300070, China
| | - Mengyu Di
- Department of Occupational and Environmental Health, School of Public Health, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, 300070, China
| | - Changyuan Zhang
- Department of Occupational and Environmental Health, School of Public Health, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, 300070, China
| | - Dan Shan
- Department of Medical, Tianjin Stomatological Hospital, School of Medicine, Nankai University, Tianjin, 300041, China
| | - Ran Yi
- Department of Occupational and Environmental Health, School of Public Health, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, 300070, China
| | - Baiqi Wang
- Department of Occupational and Environmental Health, School of Public Health, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, 300070, China; National Demonstration Center for Experimental Preventive Medicine Education (Tianjin Medical University), Tianjin, 300070, China.
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6
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Chen X, Wu W, Zeng J, Ibañez E, Cifuentes A, Mao J, Yu L, Wu H, Li P, Zhang Z. A smartphone-powered photoelectrochemical POCT via Z-scheme Cu 2O/Cu 3SnS 4 for dibutyl phthalate in the environmental and food. JOURNAL OF HAZARDOUS MATERIALS 2023; 460:132281. [PMID: 37639792 DOI: 10.1016/j.jhazmat.2023.132281] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/19/2023] [Accepted: 08/11/2023] [Indexed: 08/31/2023]
Abstract
As a major hazardous additive released from microplastics and nanoplastics, identifying dibutyl phthalate (DBP) in complex matrices attracts a growing concern in environmental monitoring and food safety. For the first time, Cu2O/Cu3SnS4 nanoflower is prepared and serves as the photoactive material which can be constructed as a smartphone-based photoelectrochemical (PEC) point-of-care test (POCT). Effectively matching energy levels between Cu2O and Cu3SnS4 accelerated the transfer of photogenerated electron-hole pairs, significantly improving the intelligent PEC POCT performance. The novel Cu2O/Cu3SnS4 has proven to be the Z-scheme heterojunction by density functional theory calculation. A competitive immunoassay has been realized on a Cu2O/Cu3SnS4 modified electrode, dramatically decreasing the photocurrent signal and enhancing POCT sensitivity. The smartphone has been used to record and transfer PEC results. Under optimal conditions, the PEC POCT exhibited a satisfying linear range (0.04-400 ng/mL) and a low detection limit of 7.94 pg/mL in real samples, together with excellent stability, repeatability, reproducibility and selectivity. The PEC POCT system provides good performance and practicability in determining DBP in water and edible oil samples. This proposal provides a practical strategy for the intelligent POCT for environment monitoring and food safety.
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Affiliation(s)
- Xiao Chen
- School of Bioengineering and Health, State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, PR China; Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Hubei Hongshan Laborator, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Key Laboratory of Detection for Mycotoxins, National Reference Lab for Biotoxin Test, Wuhan 430062, PR China; College of Chemistry & Chemical Engineering, Hubei University, Wuhan 430062, PR China
| | - Wenqin Wu
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Hubei Hongshan Laborator, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Key Laboratory of Detection for Mycotoxins, National Reference Lab for Biotoxin Test, Wuhan 430062, PR China
| | - Jing Zeng
- College of Chemistry & Chemical Engineering, Hubei University, Wuhan 430062, PR China
| | - Elena Ibañez
- Foodomics Laboratory, CIAL, CSIC-UAM, Nicolas Cabrera 9, 28049 Madrid, Spain
| | - Alejandro Cifuentes
- Foodomics Laboratory, CIAL, CSIC-UAM, Nicolas Cabrera 9, 28049 Madrid, Spain
| | - Jin Mao
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Hubei Hongshan Laborator, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Key Laboratory of Detection for Mycotoxins, National Reference Lab for Biotoxin Test, Wuhan 430062, PR China
| | - Li Yu
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Hubei Hongshan Laborator, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Key Laboratory of Detection for Mycotoxins, National Reference Lab for Biotoxin Test, Wuhan 430062, PR China
| | - Huimin Wu
- College of Chemistry & Chemical Engineering, Hubei University, Wuhan 430062, PR China
| | - Peiwu Li
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Hubei Hongshan Laborator, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Key Laboratory of Detection for Mycotoxins, National Reference Lab for Biotoxin Test, Wuhan 430062, PR China
| | - Zhaowei Zhang
- School of Bioengineering and Health, State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, PR China; Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Hubei Hongshan Laborator, Key Laboratory of Biology and Genetic Improvement of Oil Crops, Key Laboratory of Detection for Mycotoxins, National Reference Lab for Biotoxin Test, Wuhan 430062, PR China.
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7
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Zhou Y, Chai Y, Sun H, Li X, Liu X, Liang Y, Gong X, Wu Z, Liu C, Qin P. Design strategies and mechanisms of g-C 3N 4-based photoanodes for photoelectrocatalytic degradation of organic pollutants in water. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 344:118545. [PMID: 37418928 DOI: 10.1016/j.jenvman.2023.118545] [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: 04/21/2023] [Revised: 06/17/2023] [Accepted: 06/27/2023] [Indexed: 07/09/2023]
Abstract
Emerging photoelectrocatalytic (PEC) systems integrate the advantages of photocatalysis and electrocatalysis and are considered as a promising technology for solving the global organic pollution problem in water environments. Among the photoelectrocatalytic materials applied for organic pollutant degradation, graphitic carbon nitride (CN) has the combined advantages of environmental compatibility, stability, low cost, and visible light response. However, pristine CN has disadvantages such as low specific surface area, low electrical conductivity, and high charge complexation rate, and how to improve the degradation efficiency of PEC reaction and the mineralization rate of organic matter is the main problem faced in this field. Therefore, this paper reviews the progress of various functionalized CN used for PEC reaction in recent years, and the degradation efficiency of these CN-based materials is critically evaluated. First, the basic principles of PEC degradation of organic pollutants are outlined. Then, engineering strategies to enhance the PEC activity of CN (including morphology control, elemental doping, and heterojunction construction) are focused on, and the structure-activity relationships between these engineering strategies and PEC activity are discussed. In addition, the important role of influencing factors on the PEC system is summarized in terms of mechanism, to provide guidance for the subsequent research. Finally, suggestions and perspectives are provided for the preparation of efficient and stable CN-based photoelectrocatalysts for practical wastewater treatment applications.
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Affiliation(s)
- Yunfei Zhou
- College of Resources and Environment, Xiangtan University, Xiangtan, 411105, PR China; College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, PR China
| | - Youzheng Chai
- College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, PR China; Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, Changsha, 410128, PR China
| | - Haibo Sun
- College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, PR China; Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, Changsha, 410128, PR China
| | - Xueying Li
- College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, PR China; Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, Changsha, 410128, PR China
| | - Xingwang Liu
- College of Resources and Environment, Xiangtan University, Xiangtan, 411105, PR China.
| | - Yunshan Liang
- College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, PR China; Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, Changsha, 410128, PR China
| | - Xiaomin Gong
- College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, PR China; Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, Changsha, 410128, PR China
| | - Zhibin Wu
- College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, PR China; Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, Changsha, 410128, PR China.
| | - Chao Liu
- College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, PR China; Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, Changsha, 410128, PR China
| | - Pufeng Qin
- College of Environment and Ecology, Hunan Agricultural University, Changsha, 410128, PR China; Key Laboratory for Rural Ecosystem Health in the Dongting Lake Area of Hunan Province, Changsha, 410128, PR China.
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8
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Wang W, Li Z, Wu K, Dai G, Chen Q, Zhou L, Zheng J, Ma L, Li G, Wang W, An T. Novel Ag-bridged dual Z-scheme g-C 3N 4/BiOI/AgI plasmonic heterojunction: Exceptional photocatalytic activity towards tetracycline and the mechanism insight. J Environ Sci (China) 2023; 131:123-140. [PMID: 37225374 DOI: 10.1016/j.jes.2022.11.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/26/2022] [Accepted: 11/01/2022] [Indexed: 05/26/2023]
Abstract
Rational design and synthesis of highly efficient and robust photocatalysts with positive exciton splitting and interfacial charge transfer for environmental applications is critical. Herein, aiming at overcoming the common shortcomings of traditional photocatalysts such as weak photoresponsivity, rapid combination of photo-generated carriers and unstable structure, a novel Ag-bridged dual Z-scheme g-C3N4/BiOI/AgI plasmonic heterojunction was successfully synthesized using a facile method. Results showed that Ag-AgI nanoparticles and three-dimensional (3D) BiOI microspheres were decorated highly uniformly on the 3D porous g-C3N4 nanosheet, resulting in a higher specific surface area and abundant active sites. The optimized 3D porous dual Z-scheme g-C3N4/BiOI/Ag-AgI manifested exceptional photocatalytic degradation efficiency of tetracycline (TC) in water with approximately 91.8% degradation efficiency within 165 min, outperforming majority of the reported g-C3N4-based photocatalysts. Moreover, g-C3N4/BiOI/Ag-AgI exhibited good stability in terms of activity and structure. In-depth radical scavenging and electron paramagnetic resonance (EPR) analyses confirmed the relative contributions of various scavengers. Mechanism analysis indicated that the improved photocatalytic performance and stability were ascribed to the highly ordered 3D porous framework, fast electron transfer of dual Z-scheme heterojunction, desirable photocatalytic performance of BiOI/AgI and synergistic effect of Ag plasmas. Therefore, the 3D porous Z-scheme g-C3N4/BiOI/Ag-AgI heterojunction had a good prospect for applications in water remediation. The current work provides new insight and useful guidance for designing novel structural photocatalysts for environment-related applications.
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Affiliation(s)
- Wenxia Wang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China; Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Zhen Li
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
| | - Kailin Wu
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
| | - Guodong Dai
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
| | - Qingping Chen
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
| | - Lihua Zhou
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
| | - Junxia Zheng
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
| | - Liang Ma
- Guangzhou Key lab of Clean Transport Energy and Chemistry, Guangdong University of Technology, Guangzhou 510006, China
| | - Guiying Li
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Wanjun Wang
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Taicheng An
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Guangdong Technology Research Center for Photocatalytic Technology Integration and Equipment Engineering, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
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9
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Cui J, Xu C, Jin Z, Liu H, Hu R, Liu F. Visible light photocatalysis: efficient Z-scheme LaFeO 3/g-C 3N 4/ZnO photocatalyst for phenol degradation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:96875-96890. [PMID: 37581730 DOI: 10.1007/s11356-023-29199-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 08/02/2023] [Indexed: 08/16/2023]
Abstract
In this work, a Z-scheme LaFeO3/g-C3N4/ZnO heterojunction photocatalyst with large specific surface (68.758 m2/g) and low cost (0.00035 times the cost of per gram of Au) was easily synthesized by glucose-assisted hydrothermal method. The structure, surface morphology, and optical properties of the photocatalyst were investigated. The constructed Z-scheme heterojunction catalysts can enhance the visible light absorption and carrier separation efficiency. Among these photocatalysts, the 10%-LaFeO3/g-C3N4/ZnO composite possesses the premium performance for efficient degrading 97.43% of phenol within 120 min. Even after 5 cycles, it still sustains an excellent photocatalytic stability (92.13% phenol degradation). According to the XPS surface states and the capture of active species on LaFeO3/g-C3N4/ZnO, the electrons would be transferred from ZnO and LaFeO3 to g-C3N4. In addition, ·OH plays an important role in photocatalytic reactions for phenol degradation. Thus, the proposed possible photocatalytic reaction mechanism of Z-scheme LaFeO3/g-C3N4/ZnO can provide a more economical and efficient conception for phenol degradation.
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Affiliation(s)
- Jinggang Cui
- Key Laboratory of Coal Chemistry, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, Inner Mongolia, China
| | - Chang Xu
- Key Laboratory of Coal Chemistry, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, Inner Mongolia, China
| | - Zehua Jin
- School of Chemical and Biomolecular Engineering, Clemson University, Clemson, SC, 29634, USA
| | - Hongwei Liu
- School of Environmental Science, Zhejiang University, Zhejiang, 310058, Hangzhou, China
| | - Ruisheng Hu
- Key Laboratory of Coal Chemistry, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, Inner Mongolia, China
| | - Fenrong Liu
- Key Laboratory of Coal Chemistry, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, Inner Mongolia, China.
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10
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Hu C, He J, Liang J, Lin T, Liu Q. Heterogeneous photo-Fenton catalyst α-Fe 2O 3@g-C 3N 4@NH 2-MIL-101(Fe) with dual Z-Scheme heterojunction for degradation of tetracycline. ENVIRONMENTAL RESEARCH 2023; 231:116313. [PMID: 37270080 DOI: 10.1016/j.envres.2023.116313] [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: 03/06/2023] [Revised: 05/29/2023] [Accepted: 05/31/2023] [Indexed: 06/05/2023]
Abstract
A novel photo-Fenton catalyst α-Fe2O3@g-C3N4@NH2-MIL-101(Fe) (FGN) with dual Z-scheme heterojunction was successfully prepared by hydrothermal method to degrade tetracycline (TC). The preparation conditions were optimized by orthogonal test, and the successful synthesis was confirmed by characterization analyses. The prepared FGN showed better light absorption performance, higher photoelectrons-holes separation efficiency, lower photoelectrons transfer resistance, and higher specific surface area and pore capacity compared with α-Fe2O3@g-C3N4 and α-Fe2O3. The effects of experimental conditions on the catalytic degradation of TC were investigated. The degradation rate of 10 mg/L TC could reach 98.33% within 2 h when the dosage of FGN was 200 mg/L, and the degradation rate could remain 92.27% after 5 times of reuse. Furthermore, the XRD spectra and XPS spectra of FGN before and after reuse were compared to explore the structural stability and catalytic active sites of FGN, respectively. According to the identification of oxidation intermediates, three degradation pathways of TC were proposed. Through H2O2 consumption experiment, radical-scavenging experiments, EPR results, the mechanism of the dual Z-scheme heterojunction was proved. The improved performance of FGN was attributed to the dual Z-Scheme heterojunction effectively promoting the separation of photogenerated electrons from the holes and accelerating the electrons transfer, and the increase of the specific surface area.
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Affiliation(s)
- Chunyan Hu
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment (Ministry of Education), Chongqing University, Chongqing, 400045, China
| | - Jinke He
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment (Ministry of Education), Chongqing University, Chongqing, 400045, China
| | - Jianjun Liang
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment (Ministry of Education), Chongqing University, Chongqing, 400045, China.
| | - Tao Lin
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment (Ministry of Education), Chongqing University, Chongqing, 400045, China
| | - Qiuliang Liu
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment (Ministry of Education), Chongqing University, Chongqing, 400045, China
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11
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Sharma S, Sudhaik A, Khan AAP, Saini AK, Mittal D, Nguyen VH, Van Le Q, Ahamad T, Raizada P, Singh P. Potential of novel dual Z-scheme carbon quantum dots decorated MnIn 2S 4/CdS/Bi 2S 3 heterojunction for environmental applications. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27591-0. [PMID: 37258806 DOI: 10.1007/s11356-023-27591-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 05/09/2023] [Indexed: 06/02/2023]
Abstract
In this work, CQDs decorated MnIn2S4/CdS/Bi2S3 heterojunction was prepared successfully by hydrothermal technique for photocatalytic disinfection of Escherichia coli (E. coli) and mineralization of methyl orange (MO) dye. The charge transferal route and mineralization process in CQDs-MnIn2S4/CdS/Bi2S3 heterojunction were comprehensively investigated by advanced spectroscopic techniques. The improved visible-light activity and enhanced photo-generated charge transferal efficacy caused dual Z-scheme CQDs-MnIn2S4/CdS/Bi2S3 heterojunction to achieve boosted photodegradation ability. The catalytic degradation trend was followed as CQDs-MnIn2S4/CdS/Bi2S3 > MnIn2S4 > CdS > Bi2S3. The dye was mineralized within 180 min under visible light irradiation. The effect of reaction parameters, pH effect, catalyst dosage, and H2O2 addition on MO degradation was also investigated. The degradation rate was maximal at pH 4 with a pseudo-first-order rate constant, 0.0438 min-1. The assessment of antibacterial properties revealed that CQDs-MnIn2S4/CdS/Bi2S3 composite effectively inactivated E. coli under visible light. Scavenging experiments, transient photocurrent response, and electron spin resonance spectroscopy suggested that •[Formula: see text] and holes were the dominant reactive species. The Z-scheme heterojunction is recyclable up to ten photocatalytic cycles according to recycling experiments. This research indicates the importance of dual Z-scheme CQDs decorated MnIn2S4/CdS/Bi2S3 heterojunction in wastewater remediation.
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Affiliation(s)
- Sheetal Sharma
- School of Advanced Chemical Sciences, Shoolini University, Solan, Himachal Pradesh, 173229, India
- Department of Chemistry, School of Computer Science and Engineering, Lovely Professional University, Phagwara, Punjab, 144411, India
| | - Anita Sudhaik
- School of Advanced Chemical Sciences, Shoolini University, Solan, Himachal Pradesh, 173229, India
| | - Aftab Aslam Parwaz Khan
- Center of Excellence for Advanced Materials Research and Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia.
| | - Adesh K Saini
- Department of Biotechnology, MMEC and Central Research Cell, Maharishi Markandeshwar (Deemed to Be University), Mullana, Ambala, HR, 133207, India
| | - Divya Mittal
- Department of Biotechnology, MMEC and Central Research Cell, Maharishi Markandeshwar (Deemed to Be University), Mullana, Ambala, HR, 133207, India
| | - Van-Huy Nguyen
- Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education (CARE), Kanchipuram District, Kelambakkam, 603103, Tamil Nadu, India
| | - Quyet Van Le
- Department of Materials Science and Engineering, Korea University, 145, Anamro Seongbuk-Gu, Seoul, 02841, South Korea
| | - Tansir Ahamad
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Pankaj Raizada
- School of Advanced Chemical Sciences, Shoolini University, Solan, Himachal Pradesh, 173229, India
| | - Pardeep Singh
- School of Advanced Chemical Sciences, Shoolini University, Solan, Himachal Pradesh, 173229, India
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Qi Y, Zhao J, Wang H, Zhang A, Li J, Yan M, Guo T. Shaddock peel-derived N-doped carbon quantum dots coupled with ultrathin BiOBr square nanosheets with boosted visible light response for high-efficiency photodegradation of RhB. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 325:121424. [PMID: 36906054 DOI: 10.1016/j.envpol.2023.121424] [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: 12/06/2022] [Revised: 03/03/2023] [Accepted: 03/08/2023] [Indexed: 06/18/2023]
Abstract
In the present work, we constructed a serials of novel shaddock peel-derived N-doped carbon quantum dots (NCQDs) coupled with BiOBr composites. The result showed that the as-synthesized BiOBr (BOB) was composed of ultrathin square nanosheets and flower-like structure, and NCQDs were uniformly dispersed on the surface of BiOBr. Furthermore, the BOB@NCQDs-5 with optimal NCQDs content displayed the top-flight photodegradation efficiency with ca. 99% of removal rate within 20 min under visible light and possessed excellent recyclability and photostability after 5 cycles. The reason was attributed to relatively large BET surface area, the narrow energy gap, inhibited recombination of charge carriers and excellent photoelectrochemical performances. Meanwhile, the improved photodegradation mechanism and possible reaction pathways were also elucidated in detail. On this basis, the study opens a novel perspective to obtain a highly efficient photocatalyst for practical environment remediation.
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Affiliation(s)
- Yu Qi
- College of Environment Science and Engineering, Taiyuan University of Technology, No. 209 University Street, Jinzhong 030600, Shanxi, PR China
| | - Jinjiang Zhao
- College of Environment Science and Engineering, Taiyuan University of Technology, No. 209 University Street, Jinzhong 030600, Shanxi, PR China
| | - Hongtao Wang
- College of Environment Science and Engineering, Taiyuan University of Technology, No. 209 University Street, Jinzhong 030600, Shanxi, PR China
| | - Aiming Zhang
- Department of Nuclear Environment Science, China Institute for Radiation Protection, No.102 Xuefu Street, Taiyuan 030006, Shanxi, PR China
| | - Jinping Li
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, 79 Yingze West Street, Taiyuan 030024, Shanxi, PR China; Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, No.79 Yingze west street, Taiyuan 030024, Shanxi, PR China
| | - Meifang Yan
- College of Environment Science and Engineering, Taiyuan University of Technology, No. 209 University Street, Jinzhong 030600, Shanxi, PR China
| | - Tianyu Guo
- College of Environment Science and Engineering, Taiyuan University of Technology, No. 209 University Street, Jinzhong 030600, Shanxi, PR China; Department of Nuclear Environment Science, China Institute for Radiation Protection, No.102 Xuefu Street, Taiyuan 030006, Shanxi, PR China; Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, No.79 Yingze west street, Taiyuan 030024, Shanxi, PR China.
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13
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Wang X, Wang X, Shi T, Li G, Wang L, Li S, Huang J, Meng A, Li Z. Janus Z-scheme heterostructure of ZnIn2S4/MoSe2/In2Se3 for efficient photocatalytic hydrogen evolution. J Colloid Interface Sci 2023; 642:669-679. [PMID: 37030203 DOI: 10.1016/j.jcis.2023.03.199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 03/27/2023] [Accepted: 03/29/2023] [Indexed: 04/05/2023]
Abstract
Artificial manipulation of charge separation and transfer are central issues dominating hydrogen evolution reaction triggered via photocatalysis. Herein, through elaborate designing on the architecture, band alignment, and interface bonding mode, a sulfur vacancy-rich ZnIn2S4-based (Vs-ZIS) multivariate heterostructure ZnIn2S4/MoSe2/In2Se3 (Vs-ZIS/MoSe2/In2Se3) with specific Janus Z-scheme charge transfer mechanism is constructed through a two-step hydrothermal process. Steering by the Janus Z-scheme charge transfer mechanism, photogenerated electrons in the conduction band of MoSe2 transfer synchronously to the valence band of Vs-ZIS and In2Se3, resulting in abundant highly-active photogenerated electrons reserved in the conduction band of Vs-ZIS and In2Se3, therefore significantly enhancing the photocatalytic activity of hydrogen evolution. Under visible light irradiation, the optimized Vs-ZIS/MoSe2/In2Se3 with the mass ratio of MoSe2 and In2Se3 to ZnIn2S4 at 3 % and 30 %, respectively, performs a high hydrogen evolution rate of 124.42 mmol·g-1·h-1, about 43.5-folds of the original ZIS photocatalyst. Besides, an apparent quantum efficiency (AQE) of 22.5 % at 420 nm and favorable durability are also achieved over Vs-ZIS/MoSe2/In2Se3 photocatalyst. This work represents an important development in efficient photocatalysts and donates a sound foundation for the design of regulating charge transfer pathways.
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Affiliation(s)
- Xuehua Wang
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, PR China
| | - Xianghu Wang
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE. College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, PR China
| | - Tianyu Shi
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, PR China
| | - Guicun Li
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, PR China
| | - Lei Wang
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE. College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, PR China
| | - Shaoxiang Li
- Shandong Engineering Technology Research Center for Advanced Coating, Qingdao University of Science and Technology, Qingdao 266042, Shandong, PR China
| | - Jianfeng Huang
- School of Material Science and Engineering, International S&T Cooperation Foundation of Shaanxi Province, Xi'an Key Laboratory of Green Manufacture of Ceramic Materials, Shaanxi University of Science and Technology, Xi'an 710021, Shaanxi, PR China
| | - Alan Meng
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE. College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, PR China.
| | - Zhenjiang Li
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, PR China; Shandong Engineering Technology Research Center for Advanced Coating, Qingdao University of Science and Technology, Qingdao 266042, Shandong, PR China.
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14
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Malefane ME, Mafa PJ, Managa M, Nkambule TTI, Kuvarega AT. Understanding the Principles and Applications of Dual Z-Scheme Heterojunctions: How Far Can We Go? J Phys Chem Lett 2023; 14:1029-1045. [PMID: 36693167 DOI: 10.1021/acs.jpclett.2c03387] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
In the past seven years, dual Z-scheme heterojunctions evolved as favorable approaches for enhanced charge carrier separation through direct or indirect charge transfer transportation mechanisms. The dynamics of the charge transfer is the major strategy for understanding their photoactivity and stability through the formation of distinctive redox centers. The understanding of currently recognized principles for successful fabrication and classification in different energy and pollution remediation strategies is discussed, and a universal charge transfer-type-based classification of dual Z-schemes that can be adopted for Z-scheme and S-scheme heterojunctions is proposed. Methods used for determining the charge transfer as proof of dual Z-scheme existence are outlined. Most importantly, a new macroscopic N-scheme and a triple Z-scheme that can also be adopted as triple S-scheme heterostructures composed of four semiconductors are proposed for generating both oxidatively and reductively empowered systems. The proposed systems are expected to possess properties that enable them to harvest solar light to drive important chemical reactions for different applications.
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Affiliation(s)
- Mope E Malefane
- Institute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Florida1709, Johannesburg, South Africa
| | - Potlako J Mafa
- Institute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Florida1709, Johannesburg, South Africa
| | - Muthumuni Managa
- Institute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Florida1709, Johannesburg, South Africa
| | - Thabo T I Nkambule
- Institute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Florida1709, Johannesburg, South Africa
| | - Alex T Kuvarega
- Institute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology, University of South Africa, Florida1709, Johannesburg, South Africa
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15
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Wen L, Li M, Shi J, Yu T, Liu Y, Liu M, Zhou Z, Guo L. Rational design of covalent heptazine framework photocatalysts with high oxidation ability through reaction-dependent strategy. J Colloid Interface Sci 2023; 630:394-402. [DOI: 10.1016/j.jcis.2022.10.121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 10/12/2022] [Accepted: 10/22/2022] [Indexed: 11/21/2022]
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16
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Wang Z, Yang Z, Kadirova ZC, Guo M, Fang R, He J, Yan Y, Ran J. Photothermal functional material and structure for photothermal catalytic CO2 reduction: Recent advance, application and prospect. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Dhiman P, Sharma G, Alodhayb AN, Kumar A, Rana G, Sithole T, ALOthman ZA. Constructing a Visible-Active CoFe 2O 4@Bi 2O 3/NiO Nanoheterojunction as Magnetically Recoverable Photocatalyst with Boosted Ofloxacin Degradation Efficiency. Molecules 2022; 27:8234. [PMID: 36500330 PMCID: PMC9741353 DOI: 10.3390/molecules27238234] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 11/09/2022] [Accepted: 11/10/2022] [Indexed: 11/29/2022] Open
Abstract
Constructing visible-light-active Z-scheme heterojunctions has proven fruitful in enhancing the photocatalytic activity of photocatalysts for superior water clean-up. Herein, we report the fabrication of a CoFe2O4@Bi2O3/NiO (CBN) Z-scheme nanoheterojunction. The obtained CBN heterojunction was used for visible-light-assisted degradation of ofloxacin (OFL) in water. The OFL degradation efficiency achieved by the CBN heterojunction was 95.2% in 90 min with a rate constant of kapp = 0.03316 min-1, which was about eight times that of NiO and thirty times that of CoFe2O4. The photocatalytic activity of a Bi2O3/NiO Z-scheme heterojunction was greatly enhanced by the visible activity and redox mediator effect of the cobalt ferrite co-catalyst. Higher charge-carrier separation, more visible-light capture, and the Z-scheme mechanism in the Z-scheme system were the important reasons for the high performance of CBN. The scavenging experiments suggested ●O2- as an active species for superior OFL degradation. The possible OFL degradation pathway was predicted based on LC-MS findings of degradation intermediate products. The magnetic nature of the CBN helped in the recovery of the catalyst after reuse for six cycles. This work provides new insights into designing oxide-based heterojunctions with high visible-light activity, magnetic character, and high redox capabilities for potential practical applications in environmental treatment.
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Affiliation(s)
- Pooja Dhiman
- International Research Centre of Nanotechnology for Himalayan Sustainability (IRCNHS), Shoolini University, Solan 173229, India
| | - Gaurav Sharma
- International Research Centre of Nanotechnology for Himalayan Sustainability (IRCNHS), Shoolini University, Solan 173229, India
- Department of Chemistry, College of Science, King Saud University, Bldg. #5, Riyadh 11451, Saudi Arabia
- Department of Chemical Engineering, University of Johannesburg, P.O. Box 17011, Doornfontein 2088, South Africa
| | - Abdullah N. Alodhayb
- Department of Physics and Astronomy, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Amit Kumar
- International Research Centre of Nanotechnology for Himalayan Sustainability (IRCNHS), Shoolini University, Solan 173229, India
| | - Garima Rana
- International Research Centre of Nanotechnology for Himalayan Sustainability (IRCNHS), Shoolini University, Solan 173229, India
| | - Thandiwe Sithole
- Department of Chemical Engineering, University of Johannesburg, P.O. Box 17011, Doornfontein 2088, South Africa
| | - Zeid A. ALOthman
- Department of Chemistry, College of Science, King Saud University, Bldg. #5, Riyadh 11451, Saudi Arabia
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Towards the Sustainable Production of Ultra-Low-Sulfur Fuels through Photocatalytic Oxidation. Catalysts 2022. [DOI: 10.3390/catal12091036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Nowadays, the sulfur-containing compounds are removed from motor fuels through the traditional hydrodesulfurization technology, which takes place under harsh reaction conditions (temperature of 350–450 °C and pressure of 30–60 atm) in the presence of catalysts based on alumina with impregnated cobalt and molybdenum. According to the principles of green chemistry, energy requirements should be recognized for their environmental and economic impacts and should be minimized, i.e., the chemical processes should be carried out at ambient temperature and atmospheric pressure. This approach could be implemented using photocatalysts that are sensitive to visible light. The creation of highly active photocatalytic systems for the deep purification of fuels from sulfur compounds becomes an important task of modern catalysis science. The present critical review reports recent progress over the last 5 years in heterogeneous photocatalytic desulfurization under visible light irradiation. Specific attention is paid to the methods for boosting the photocatalytic activity of materials, with a focus on the creation of heterojunctions as the most promising approach. This review also discusses the influence of operating parameters (nature of oxidant, molar ratio of oxidant/sulfur-containing compounds, photocatalyst loading, etc.) on the reaction efficiency. Some perspectives and future research directions on photocatalytic desulfurization are also provided.
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