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Liu X, Fan X, Wu J, Zhuge Z, Li L, Fan J, Shen S, Tang Z, Gong Y, Xue Y, Pan L. CdS-based Schottky junctions for efficient visible light photocatalytic hydrogen evolution. J Colloid Interface Sci 2024; 673:1-8. [PMID: 38870663 DOI: 10.1016/j.jcis.2024.06.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 05/31/2024] [Accepted: 06/05/2024] [Indexed: 06/15/2024]
Abstract
Heterojunctions photocatalysts play a crucial role in achieving high solar-hydrogen conversion efficiency. In this work, we mainly focus on the charge transfer dynamics and pathways for sulfides-based Schottky junctions in the photocatalytic water splitting process to clarify the mechanism of heterostructures photocatalysis. Sulfides-based Schottky junctions (CdS/CoP and CdS/1T-MoS2) were successfully constructed for photocatalytic water splitting. Because of the higher work function of CdS than that of CoP and 1T-MoS2, the direction of the built-in electric field is from CoP or 1T-MoS2 to semiconductor. Therefore, CoP and 1T-MoS2 can act as electrons acceptors to accelerate the transfer of photo-generated electron on the surface of CdS, thus improving the charge utilization efficiency. Meanwhile, CoP and 1T-MoS2 as active sites can also promote the water dissociation and lower the H+ reduction overpotential, thus contributing to the excellent photocatalytic hydrogen production activity (23.59 mmol·h-1·g-1 and 1195.8 mol·h-1·g-1 for CdS/CoP and CdS/1T-MoS2).
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Affiliation(s)
- Xinjuan Liu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Xiaofan Fan
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Jie Wu
- Sunwoda Mobility Energy Technology Co., Ltd., Shenzhen 518107, Guangdong Province, PR China
| | - Zhihao Zhuge
- Institute of Optoelectronic Materials and Devices, College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, PR China
| | - Lei Li
- Chongqing Key Laboratory of Extraordinary Coordination Bond and Advanced Materials Techniques (EBEAM), Yangtze Normal University, Chongqing 408100, PR China.
| | - Jinchen Fan
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Shuling Shen
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Zhihong Tang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China
| | - Yinyan Gong
- Institute of Optoelectronic Materials and Devices, College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, PR China
| | - Yuhua Xue
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, PR China.
| | - Likun Pan
- Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, PR China.
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2
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Mu W, Wang L, Chang C. Photocatalytic adsorption/degradation of tetracycline by S-scheme BiOI/BiOIO 3 p-n heterojunction from dissociation of BiOIO 3in-situ solvothermal process. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 356:120630. [PMID: 38527386 DOI: 10.1016/j.jenvman.2024.120630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 02/10/2024] [Accepted: 03/10/2024] [Indexed: 03/27/2024]
Abstract
The pollution of tetracycline (TC) had attracted more and more attention due to its unprecedented use and potential hazards. The S-scheme BiOI/BiOIO3 p-n heterojunction was successfully fabricated by in-situ solvothermal treatment of BiOIO3, and was used for the removal of TC from aqueous solutions. The results demonstrated that the construction of S-scheme p-n heterojunction could significantly improve the removal of TC by photocatalytic adsorption/degradation synergism. The removal rate of TC was significantly enhanced after solvothermal modification. The three main reasons for the enhanced removal efficiency were as follows: first, the light absorption range of the BiOIO3 was enhanced by solvothermal treatment; secondly, the construction of the heterojunction was beneficial to the valid separation and migration of the photo-generated carriers; finally, the adsorption of TC enhanced the speed of TC reaching the semiconductor interface and reacting with active species. Trapping tests were conducted to reveal that •O2- and 1O2 are the main reactive species for TC degradation. The nine degradation products were identified by the high performance liquid chromatography-mass spectrometry (HPLC-MS), and the three reaction pathways were deduced. A possible S-scheme p-n heterojunction photocatalytic mechanism was presented on the basis of band structures and active species capturing experiment.
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Affiliation(s)
- Weina Mu
- School of Chemical Engineering, Changchun University of Technology, Changchun, 130012, China; College of Environmental and Chemical Engineering, Dalian University, Dalian, 116622, China
| | - Lijuan Wang
- School of Chemical Engineering, Changchun University of Technology, Changchun, 130012, China.
| | - Chun Chang
- College of Environmental and Chemical Engineering, Dalian University, Dalian, 116622, China.
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Graimed BH, Jabbar ZH, Alsunbuli MM, Ammar SH, G Taher A. Decoration of 0D Bi 3NbO 7 nanoparticles onto 2D BiOIO 3 nanosheets as visible-light responsive S-scheme photocatalyst for photo-oxidation of antibiotics in wastewater. ENVIRONMENTAL RESEARCH 2024; 243:117854. [PMID: 38065389 DOI: 10.1016/j.envres.2023.117854] [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: 09/27/2023] [Revised: 11/16/2023] [Accepted: 11/30/2023] [Indexed: 02/06/2024]
Abstract
In this work, a new S-type hybrid composed of 2D BiOIO3 and 0D Bi3NbO7 was proposed and hybridized by a facile self-assembly strategy. The developed nanomaterials were characterized and identified by a series of sophisticated analyses, like XRD, SEM, EIS, XPS, PL, UPS, EDS, BET, M-S, TEM, HRTEM, and DRS. The photocatalytic behavior of BiOIO3/Bi3NbO7 was examined and optimized against amoxicillin (AMX) and other types of antibiotics under a variety of environmental conditions, such as visible light (150 W LED), direct sunlight, pH (3-11), catalyst dosages (20-80 mg), humic acid (0-24 mg/L), AMX concentration (10-40 mg/L), and different inorganic ions (0.05 M). The optimized BiOIO3/Bi3NbO7 hybrid attained exceptional AMX degradation activity (96.5%) under visible light (60 min), with a reaction constant of up to 0.04559 min-1, exceeding bare BiOIO3 and Bi3NbO7 by 5.57 and 5.3 folds, respectively. The obtained BiOIO3/Bi3NbO7 hybrid unclosed expanded light utilization behavior compared with neat catalysts, which originates from the powerful incorporation between BiOIO3 and Bi3NbO7 in the S-type system. The radical investigations confirmed the superiority of BiOIO3/Bi3NbO7 in generating both •OH and •O2- during the photoreaction. The novel Bi3NbO7-based heterojunction afforded robust photostability in five treatment cycles and simple charge transfer activity in the S-type route, boosting the photo-mechanism for antibiotic degradation in an efficient manner. The building of the S-scheme heterojunction between BiOIO3 and Bi3NbO7 stimulates the utilization of holes by the recombination process and promotes the overall stability of the composite. Our study introduces a new class of semiconductor heterojunctions that may contribute to the development potential of the photocatalysis sector in wastewater treatment.
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Affiliation(s)
- Bassim H Graimed
- Environmental Engineering Department, College of Engineering, University of Baghdad, Baghdad, Iraq
| | - Zaid H Jabbar
- Building and Construction Techniques Engineering Department, Al-Mustaqbal University College, 51001 Hillah, Babylon, Iraq.
| | - Maye M Alsunbuli
- Architecture Engineering Department, College of Engineering, University of Baghdad, Baghdad, Iraq
| | - Saad H Ammar
- Department of Chemical Engineering, College of Engineering, Al-Nahrain University, Jadriya, Baghdad, Iraq; College of Engineering, University of Warith Al-Anbiyaa, Karbala, Iraq
| | - Athraa G Taher
- Ministry of Oil, Oil Pipelines Company, Daura, Baghdad, Iraq
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Wang Y, Fu H, Chen Y, Wu B, Lin C, Wu X, Gao M, Lin T, Huang Y, Zhao C. Ultrathin Layered Structure and Oxygen Vacancies Mediated Efficient Charge Separation toward High Photocatalytic Activity in BiOIO 3 Nanosheets. ACS APPLIED MATERIALS & INTERFACES 2024; 16:5977-5988. [PMID: 38266025 DOI: 10.1021/acsami.3c17554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
Previous bismuth-based photocatalysts usually employ a strong acid solution (e.g., HNO3 solution) to obtain an ultrathin structure toward high photocatalytic activity. In this work, the ultrathin layered BiOIO3 nanosheets are successfully synthesized using just the glucose hydrothermal solution. The high-concentration glucose solution shows the obvious acidity after the hydrothermal process, which leads to the quick decrease in thickness of BiOIO3 nanosheets from ∼45.58 to ∼5.74 nm. The ultrathin structure can greatly improve charge carriers' separation and transfer efficiency. The generation of reductive iodide ions brings about oxygen vacancies in the ultrathin nanosheets, then the defect energy level is formed, causing the decreased band gap and improving the visible light absorption. Compared to thick BiOIO3 nanosheet with little oxygen vacancies, much higher carrier separation efficiency and visible light absorption are achieved in the ultrathin nanosheets with oxygen vacancies, resulting in an excellent photocatalytic performance (0.1980 min-1 for RhB degradation), which is much higher than most other bismuth-based photocatalysts. The superoxide radicals (•O2-) and holes (h+) are the major active species responsible for high photocatalytic activity. This work affords an environmentally friendly strategy to synthesize ultrathin photocatalysts with superior photocatalytic properties.
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Affiliation(s)
- Yabin Wang
- College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, China
| | - Hanxin Fu
- College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, China
| | - Yan Chen
- College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, China
| | - Bo Wu
- Sichuan Zoige Alpine Wetland Ecosystem National Observation and Research Station, Sichuan Province Key Laboratory of Information Materials, Southwest Minzu University, Chengdu 610041, China
| | - Cong Lin
- College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, China
| | - Xiao Wu
- College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, China
| | - Min Gao
- College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, China
| | - Tengfei Lin
- College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, China
| | - Yanli Huang
- College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350117, China
| | - Chunlin Zhao
- College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, China
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Wang K, Yu X, Liu Z, Zhang T, Ma Y, Niu J, Yao B. Interface engineering of 0D/2D Cu 2O/BiOBr Z-scheme heterojunction for efficient degradation of sulfamethoxazole: Mechanism, degradation pathway, and DFT calculation. CHEMOSPHERE 2024; 346:140596. [PMID: 37918537 DOI: 10.1016/j.chemosphere.2023.140596] [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: 06/20/2023] [Revised: 09/27/2023] [Accepted: 10/29/2023] [Indexed: 11/04/2023]
Abstract
Constructed heterojunction has been considered an efficient strategy to enhance the migration and transfer of photoinduced charge carriers. Herein, a Z-scheme Cu2O/BiOBr heterojunction with 0D/2D structure was fabricated by microwave hydrothermal method. It was found that the optimal composites photocatalyst showed excellent activity for sulfamethoxazole (SMZ) illumination, and the removal rate reached 90.7%, which was higher than pristine Cu2O (53.0%) and BiOBr (60.0%). Subsequently, the operational parameters such as catalyst dosage, concentrations of pollutants, and pH of solution were investigated. According to the ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRs), Mott-Schottky curve, and density functional theory (DFT) analysis, the Z-scheme degradation mechanism of Cu2O/BiOBr heterostructure was proposed. Among them, the interface structure of 0-dimensions/2-dimensions (0D/2D) can significantly increase the number of heterojunctions in the composite catalyst, and Z-scheme heterostructures can accelerate the generation and migration of photoinduced charge carriers, which has a facilitation effect on improving the decomposition activity of the photocatalyst. Moreover, three possible pathways for SMZ degradation were inferred. This study provides a promising strategy for constructing novel heterojunctions with high photocatalytic performance.
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Affiliation(s)
- Kai Wang
- School of Science, Xi'an University of Technology, Xi'an, 710048, China; Material Corrosion and Protection Key Laboratory of Shaanxi Province, Xi'an, 710048, China
| | - Xiaojiao Yu
- School of Science, Xi'an University of Technology, Xi'an, 710048, China; Material Corrosion and Protection Key Laboratory of Shaanxi Province, Xi'an, 710048, China.
| | - Zongbin Liu
- School of Science, Xi'an University of Technology, Xi'an, 710048, China
| | - Ting Zhang
- School of Science, Xi'an University of Technology, Xi'an, 710048, China
| | - Yao Ma
- School of Science, Xi'an University of Technology, Xi'an, 710048, China
| | - Jinfen Niu
- School of Science, Xi'an University of Technology, Xi'an, 710048, China
| | - Binhua Yao
- School of Science, Xi'an University of Technology, Xi'an, 710048, China
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Yu H, Dai M, Zhang J, Chen W, Jin Q, Wang S, He Z. Interface Engineering in 2D/2D Heterogeneous Photocatalysts. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2205767. [PMID: 36478659 DOI: 10.1002/smll.202205767] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/06/2022] [Indexed: 06/17/2023]
Abstract
Assembling different 2D nanomaterials into heterostructures with strong interfacial interactions presents a promising approach for novel artificial photocatalytic materials. Chemically implementing the 2D nanomaterials' construction/stacking modes to regulate different interfaces can extend their functionalities and achieve good performance. Herein, based on different fundamental principles and photochemical processes, multiple construction modes (e.g., face-to-face, edge-to-face, interface-to-face, edge-to-edge) are overviewed systematically with emphasis on the relationships between their interfacial characteristics (e.g., point, linear, planar), synthetic strategies (e.g., in situ growth, ex situ assembly), and enhanced applications to achieve precise regulation. Meanwhile, recent efforts for enhancing photocatalytic performances of 2D/2D heterostructures are summarized from the critical factors of enhancing visible light absorption, accelerating charge transfer/separation, and introducing novel active sites. Notably, the crucial roles of surface defects, cocatalysts, and surface modification for photocatalytic performance optimization of 2D/2D heterostructures are also discussed based on the synergistic effect of optimization engineering and heterogeneous interfaces. Finally, perspectives and challenges are proposed to emphasize future opportunities for expanding 2D/2D heterostructures for photocatalysis.
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Affiliation(s)
- Huijun Yu
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Meng Dai
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Jing Zhang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Wenhan Chen
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Qiu Jin
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Shuguang Wang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Zuoli He
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
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7
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Hong T, Anwer S, Wu J, Deng C, Qian H. Semiconductor-metal-semiconductor TiO2@Au/g-C3N4 interfacial heterojunction for high performance Z-scheme photocatalyst. Front Chem 2022; 10:1050046. [DOI: 10.3389/fchem.2022.1050046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 10/12/2022] [Indexed: 11/13/2022] Open
Abstract
We designed an edge-sites 2D/0D/2D based TiO2@Au/g-C3N4 Z-scheme photocatalytic system consists of highly exposed (001) TNSs@Au edge-site heterojunction, and the Au/g-C3N4 interfacial heterojunction. The designed photocatalyst was prepared by a facile and controlled hydrothermal synthesis strategy via in-situ nanoclusters-to-nanoparticles deposition technique and programable calcination in N2 atmosphere to get edge-site well-crystalline interface, followed by chemically bonded thin overlay of g-C3N4. Photocatalytic performance of the prepared TNSs@Au/g-C3N4 catalyst was evaluated by the photocatalytic degradation of organic pollutants in water under visible light irradiation. The results obtained from structural and chemical characterization conclude that the inter-facet junction between highly exposed (001) and (101) TNSs surface, and TNSs@Au interfacial heterojunction formed by a direct contact between highly crystalline TNSs and Au, are the key factors to enhance the separation efficiency of photogenerated electrons/holes. On coupling with overlay of g-C3N4 2D NSs synergistically offer tremendous reactive sites for the potential photocatalytic dye degradation in the Z-scheme photocatalyst. Particularly in the designed photocatalyst, Au nanoparticles accumulates and transfer the photo-stimulated electrons originated from anatase TNSs to g-C3N4via semiconductor-metal heterojunction. Because of the large exposed reactive 2D surface, overlay g-C3N4 sheets not only trap photoelectrons, but also provide a potential platform for increased adsorption capacities for organic contaminants. This work establishes a foundation for the development of high-performance Z-scheme photocatalytic systems.
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