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Wang Y, Xue S, Liao Y, Wang H, Lu Q, Tang N, Du F. In situ construction of Ag/Bi 2O 3/Bi 5O 7I heterojunction with Bi-MOF for enhance the photocatalytic efficiency of bisphenol A by facet-coupling and s-scheme structure. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 362:121342. [PMID: 38830282 DOI: 10.1016/j.jenvman.2024.121342] [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: 02/26/2024] [Revised: 05/12/2024] [Accepted: 05/30/2024] [Indexed: 06/05/2024]
Abstract
In this study, Ag/Bi2O3/Bi5O7I with s-scheme heterostructures were successfully synthesized in situ by nano-silver modification of CUA-17 and halogenated hydrolysis.The growth rate of Bi2O3 crystals was effectively controlled by adjusting the doping amount of Ag, resulting in the formation of a facet-coupling heterojunctions. Through the investigation of the microstructure and compositional of catalysts, it has been confirmed that an intimate facet coupling between the Bi2O3 (120) facet and the Bi5O7I (312) facet, which provides robust support for charge transfer. Under visible light irradiation, the AgBOI.3 heterojunction photocatalyst exhibited an outstanding degradation rate of 98.2% for Bisphenol A (BPA) with excellent stability. Further characterization using optical, electrochemical, impedance spectroscopy, and electron spin resonance techniques revealed significantly enhanced efficiency in photogenerated charge separation and transfer, and confirming the s-scheme structure of the photocatalyst. Density functional theory calculations was employed to elucidate the mechanism of BPA degradation and the degradation pathway of BPA was investigated by LC-MS. Finally, the toxicity of the degradation intermediates was evaluated using T.E.S.T software.
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Affiliation(s)
- Yong Wang
- College of Biological and Chemical Engineering, Changsha University, Changsha, 410022, China; College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Shikai Xue
- College of Biological and Chemical Engineering, Changsha University, Changsha, 410022, China; College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Yuhao Liao
- College of Biological and Chemical Engineering, Changsha University, Changsha, 410022, China
| | - Haiyan Wang
- College of Biological and Chemical Engineering, Changsha University, Changsha, 410022, China
| | - Qiujun Lu
- College of Biological and Chemical Engineering, Changsha University, Changsha, 410022, China
| | - Ningli Tang
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Fuyou Du
- College of Biological and Chemical Engineering, Changsha University, Changsha, 410022, China; College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China.
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2
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Jabbar ZH, Graimed BH, Hamzah Najm H, Ammar SH, Taher AG. Reasonable decoration of CuO/Cd 0.5Zn 0.5S nanoparticles onto flower-like Bi 5O 7I as boosted step-scheme photocatalyst for reinforced photodecomposition of bisphenol A and Cr(VI) reduction in wastewater. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 348:119302. [PMID: 37866185 DOI: 10.1016/j.jenvman.2023.119302] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/06/2023] [Accepted: 10/09/2023] [Indexed: 10/24/2023]
Abstract
Building S-scheme heterostructures is a sophisticated approach to receiving outstanding catalysts for environmental detoxification. Herein, ternary CuO/Cd0.5Zn0.5S/Bi5O7I (CO/CZS/BOI) nanocomposites were constructed by in-situ decorating of CuO and Cd0.5Zn0.5S nanoparticles onto Bi5O7I micro-sphere in a facile route. The optimal CO/CZS/BOI reflected reinforced bisphenol A (BPA) photo-oxidation (95% in 70 min) and Cr(VI) photo-reduction (96.6 in 60 min) under visible light. Besides, CO/CZS/BOI afforded 5.10 (4.44), 4.42 (3.71), and 6.60 (5.27) fold reinforcement in the BPA (Cr(VI)) photo-reaction rate compared to BOI, CZS, and CO, respectively. This behavior was linked to the development of S-scheme mechanisms resulting from the co-effects of BOI, CZS, and CO in retaining the optimum redox capacity, facilitating the dissolution of photo-carriers, increasing reactive sites, and strengthening the visible-light response. The parameters influencing the catalytic reaction of CO/CZS/BOI, such as light intensity, catalyst dosage, and pH, were deeply studied. The quenching tests declared the prominent roles •O2- and •OH in the breaking down of BPA and the participation of electrons and •O2- in the photocatalytic conversion of Cr(VI). The cyclic tests verified the robust photostability of CO/CZS/BOI, which is associated with the reintegration process between the free h+ coming from CZS and the photo-induced e- of CO and BOI in the S-scheme system. In conclusion, the present study provides a profound understanding of the photo-reaction mechanism of CO/CZS/BOI and introduces a novel concept for constructing a superior dual-Scheme system for efficient wastewater detoxification.
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Affiliation(s)
- Zaid H Jabbar
- Building and Construction Techniques Engineering Department, Al-Mustaqbal University College, 51001, Hillah, Babylon, Iraq.
| | - Bassim H Graimed
- Environmental 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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3
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Hassan QU, Channa AI, Zhai QG, Zhu G, Gao Y, Ali N, Bilal M. Recent advancement in Bi 5O 7I-based nanocomposites for high performance photocatalysts. CHEMOSPHERE 2022; 288:132668. [PMID: 34718019 DOI: 10.1016/j.chemosphere.2021.132668] [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: 08/29/2021] [Revised: 10/21/2021] [Accepted: 10/23/2021] [Indexed: 06/13/2023]
Abstract
Bi5O7I belongs to the family of bismuth oxyhalides (BiOX, X = Cl, Br, I), having a unique layered structure with an internal electrostatic field that promotes the separation and transfer of photo-generated charge carriers. Interestingly, Bi5O7I exhibits higher thermal stability compared to its other BiOX member compounds and absorption spectrum extended to the visible region. Bi5O7I has demonstrated applications in diverse fields such as photocatalytic degradation of various organic pollutants, marine antifouling, etc. Unfortunately, owing to its wide band gap of ∼2.9 eV, its absorption lies mainly in the ultraviolet region, and a tiny portion of absorption lies in the visible region. Due to limited absorption, the photocatalytic performance of pure Bi5O7I is still facing challenges. In order to reduce the band gap and increase the light absorption capability of Bi5O7I, doping and formation of heterostructure strategies have been employed, which showed promising results in the photocatalytic performance. In addition, the plasmonic heterostructures of Bi5O7I were also developed to further boost the efficiency of Bi5O7I as a photocatalyst. Here, in this review article, we present such recent efforts made for the advanced development of Bi5O7I regarding its synthesis, properties and applications. The strategies for photocatalytic performance enhancement have been discussed in detail. Moreover, in the conclusion section, we have presented the current challenges and discussed possible prospective developments in this field.
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Affiliation(s)
- Qadeer Ul Hassan
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, People's Republic of China; Institute for Advanced Study, Shenzhen University, Nanhai Avenue 3688, Shenzhen, 518060, People's Republic of China; College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, People's Republic of China
| | - Ali Imran Channa
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, PR China
| | - Quan-Guo Zhai
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, People's Republic of China.
| | - Gangqiang Zhu
- School of Physics and Information Technology, Shaanxi Normal University, Xi'an, 710119, People's Republic of China.
| | - Yongxiang Gao
- Institute for Advanced Study, Shenzhen University, Nanhai Avenue 3688, Shenzhen, 518060, People's Republic of China
| | - Nisar Ali
- Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, National & Local Joint Engineering Research, Center for Deep Utilization Technology of Rock-salt Resource, Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huai'an, 223003, China
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian, 223003, China
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Liu HZ, Han QF, Ding HW, Yu HM, Chiu TW. One-step route to α-Bi2O3/BiOX (X = Cl, Br) heterojunctions with Bi2O3 ultrafine nanotubes closely adhered to BiOX nanosheets. J Taiwan Inst Chem Eng 2022. [DOI: 10.1016/j.jtice.2021.11.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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5
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Enhancing solar photocatalytic activity of Bi5O7I photocatalyst with activated carbon heterojunction. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2021.11.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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6
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Ding H, Yu H, Han Q. Transformation of phase and heterojunction type by using HAc-adsorbed Bi(NO 3) 3 as a Bi source. J Colloid Interface Sci 2021; 604:429-440. [PMID: 34271494 DOI: 10.1016/j.jcis.2021.07.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 07/02/2021] [Accepted: 07/04/2021] [Indexed: 10/20/2022]
Abstract
Generally, preparing high-efficiency heterojunction photocatalysts via a facile room-temperature route is attractive from the perspective of energy and labor saving. Herein, by using dried and glacial acetic acid (HAc)-adsorbed bismuth nitrate, instead of Bi(NO3)3·5H2O, as a Bi source, a β-Bi2O3/Bi5O7I heterojunction with well dispersed flowery hierarchical architecture was synthesized, which endows it with high surface area, open channels and good light harvest. More importantly, the change of the precursor achieved a successful transformation for both of phase and heterojunction type, i.e. from type-Ⅰ BiOI/[Bi6O5(OH)3](NO3)5·3H2O (labeled as BiOI/BBN) to Z-scheme β-Bi2O3/Bi5O7I heterojunction. Since both β-Bi2O3 and Bi5O7I are visible light responsive, β-Bi2O3/Bi5O7I exhibited improved visible-light photocatalytic activity for the degradation of tetracycline (TC) and malachite green (MG) with apparent reactant rate (kapp) values about 10 and 11 times higher than those of BiOI/BBN. Besides, the presence of more oxygen vacancies also contributed to the enhancement in photocatalytic performance.
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Affiliation(s)
- Huiwei Ding
- Key Laboratory for Soft Chemistry and Functional Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Huimei Yu
- Key Laboratory for Soft Chemistry and Functional Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Qiaofeng Han
- Key Laboratory for Soft Chemistry and Functional Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing 210094, China.
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7
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MOFs Derived Hetero-ZnO/Fe 2O 3 Nanoflowers with Enhanced Photocatalytic Performance towards Efficient Degradation of Organic Dyes. NANOMATERIALS 2021; 11:nano11123239. [PMID: 34947588 PMCID: PMC8707436 DOI: 10.3390/nano11123239] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 11/23/2021] [Accepted: 11/26/2021] [Indexed: 11/16/2022]
Abstract
It is still a challenge for wastewater treatment to develop efficient yet low-cost photocatalysts on a large scale. Herein, a facile yet efficient method was devised to successfully synthesize ZnO/Fe2O3 nanoflowers (NFs) by using metal organic framework ZIF-8 as the precursor. The photocatalytic activities of the as-prepared hetero-ZnO/Fe2O3 NFs are purposefully evaluated by photocatalytic degradation of methylene blue (MB) and methyl orange (MO) under UV light irradiation. The resulting ZnO/Fe2O3 NFs display even higher photocatalytic activities than those of single-phase ZnO and Fe2O3 as a photocatalyst for the degradation of both MB ad MO. Particularly, nearly 100% MB can be photocatalytically degraded in 90 min under UV light irradiation using the hetero-NFs photocatalyst. The enhanced photocatalytic properties are probably ascribed to the synergistic contributions from the suitable band alignment of ZnO and Fe2O3, large surface area, and strong light absorption property. Radical scavenger experiments prove that the photogenerated holes, ·OH and ·O2-, play key roles in photocatalytic degradation process of organic dyes. Accordingly, the photocatalytic degradation mechanism of hetero-ZnO/Fe2O3 NFs towards dyes is tentatively proposed. The work contributes an effective way to rationally design and fabricate advanced photocatalysts with heterojunction structures for photocatalytic applications.
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Kivyiro AO, Darkwah WK, Bofah‐Buoh R, Koomson DA, Sandrine MKC, Puplampu JB. Photocatalytic Reduction of Hexavalent Chromium (Cr
6+
) Over BiOI Calcined at Different Temperature Under Visible Light Irradiation. ChemistrySelect 2021. [DOI: 10.1002/slct.202101285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Adinas Oswald Kivyiro
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes of Ministry of Education College of Environment Hohai University No.1, Xikang Road Nanjing 210098 China
| | - Williams Kweku Darkwah
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes of Ministry of Education College of Environment Hohai University No.1, Xikang Road Nanjing 210098 China
- Department of Biochemistry School of Biological Sciences University of Cape Coast Cape Coast Ghana
| | - Robert Bofah‐Buoh
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes of Ministry of Education College of Environment Hohai University No.1, Xikang Road Nanjing 210098 China
| | - Desmond Ato Koomson
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes of Ministry of Education College of Environment Hohai University No.1, Xikang Road Nanjing 210098 China
- Department of Biochemistry School of Biological Sciences University of Cape Coast Cape Coast Ghana
| | - Masso Kody Christelle Sandrine
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes of Ministry of Education College of Environment Hohai University No.1, Xikang Road Nanjing 210098 China
| | - Joshua Buer Puplampu
- Department of Biochemistry School of Biological Sciences University of Cape Coast Cape Coast Ghana
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9
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Shen Z, Liu H, Jia X, Han Q, Bi H. Phase transformation and heterojunction construction of bismuth oxyiodides by grinding-assisted calcination in the presence of thiourea and their photoactivity. Dalton Trans 2021; 50:7464-7473. [PMID: 33970178 DOI: 10.1039/d1dt00745a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Bismuth-rich oxyhalides are promising photocatalysts due to their special layered structure and adjustable band gap energy. In this work, a series of bismuth oxyiodides were fabricated by grinding-assisted calcination in the presence of thiourea, where grinding-induced mechanical force could accelerate the decomposition reaction and thiourea could prohibit the crystal particles from growing due to coordination action. The combined effect of grinding and thiourea could decrease the temperature of phase transformation of bismuth oxyiodides. Among these, heterojunction Bi4O5I2/Bi5O7I containing uniform flower-like microspheres assembled by ultra-thin nanosheets exhibited the highest photocatalytic activity and favorable stability for the degradation of the antibiotic tetracycline under visible light irradiation. This work could provide a good reference for the design of bismuth-rich oxyhalide heterojunction for photocatalytic applications.
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Affiliation(s)
- Zichen Shen
- Key Laboratory for Soft Chemistry and Functional Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Huanzhen Liu
- Key Laboratory for Soft Chemistry and Functional Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Xuemei Jia
- Key Laboratory for Soft Chemistry and Functional Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Qiaofeng Han
- Key Laboratory for Soft Chemistry and Functional Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Huiping Bi
- Key Laboratory for Soft Chemistry and Functional Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing 210094, China.
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10
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Peng Y, Liu MQ, Zhao NN, Kan PF. Controlled synthesis of Bi 2O 2CO 3 nanorods with enhanced photocatalytic performance. CrystEngComm 2021. [DOI: 10.1039/d1ce00242b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Bi2O2CO3 nanorod is synthesized via solid–gas high temperature method and exhibits excellent photocatalytic activity for degrading salicylic acid.
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Affiliation(s)
- Yin Peng
- Key Laboratory of Electrochemical Clean Energy of Anhui Higher-Education Institutes
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- College of Chemistry and Materials Science
- Anhui Normal University
| | - Meng-Qi Liu
- Key Laboratory of Electrochemical Clean Energy of Anhui Higher-Education Institutes
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- College of Chemistry and Materials Science
- Anhui Normal University
| | - Nan-Nan Zhao
- Key Laboratory of Electrochemical Clean Energy of Anhui Higher-Education Institutes
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- College of Chemistry and Materials Science
- Anhui Normal University
| | - Peng-Fei Kan
- Key Laboratory of Electrochemical Clean Energy of Anhui Higher-Education Institutes
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- College of Chemistry and Materials Science
- Anhui Normal University
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11
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Wang B, Qian HZ, Peng Y. 2D/1D Bi 12O 17Cl 2/β-Bi 2O 3 heterojunction photocatalysts with boosted photocatalytic performance. CrystEngComm 2021. [DOI: 10.1039/d1ce00472g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A novel 2D/1D Bi12O17Cl2/β-Bi2O3 heterostructure displays excellent photocatalytic degradation of methyl orange and phenol under solar light irradiation. The enhanced photocatalytic activity is ascribed to the unique vertical 2D Bi12O17Cl2 nanosheets.
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Affiliation(s)
- Bo Wang
- Anhui Provincial Engineering Laboratory of Water and Soil Pollution Control and Remediation
- School of Ecology and Environment
- Anhui Normal University
- Wuhu
- China
| | - Hao-Zhi Qian
- Anhui Provincial Engineering Laboratory of Water and Soil Pollution Control and Remediation
- School of Ecology and Environment
- Anhui Normal University
- Wuhu
- China
| | - Yin Peng
- The Key Laboratory of Functional Molecular Solids
- Ministry of Education
- College of Chemistry and Materials Science
- Anhui Normal University
- Wuhu 241000
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12
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Wei Z, Zheng N, Dong X, Zhang X, Ma H, Zhang X, Xue M. Green and controllable synthesis of one-dimensional Bi 2O 3/BiOI heterojunction for highly efficient visible-light-driven photocatalytic reduction of Cr(VI). CHEMOSPHERE 2020; 257:127210. [PMID: 32502738 DOI: 10.1016/j.chemosphere.2020.127210] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 05/13/2020] [Accepted: 05/23/2020] [Indexed: 06/11/2023]
Abstract
BiOI nanosheets have been successfully deposited on the porous Bi2O3 nanorobs via a one-pot precipitation method. The physicochemical features of the as-prepared materials were characterized in detail by a series of techniques, and the results revealed that BiOI nanosheets were evenly distributed on the porous Bi2O3 nanorobs. Because of higher photogenerated electron-hole pairs separation efficiency and the larger specific surface area compared to the pristine Bi2O3 and BiOI, the 50%Bi2O3/BiOI composite exhibited significantly enhanced photocatalytic activity for Cr(VI) reduction under visible light irradiation, and the reduction rate constant was 0.02002 min-1, which was about 27.4 and 2.6 times higher than that of pure Bi2O3 (0.00073 min-1) and BiOI (0.00769 min-1), respectively. Moreover, the 50%Bi2O3/BiOI composite also possessed the excellent photochemical stability and recyclability, thereby facilitating its wastewater treatment application.
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Affiliation(s)
- Zhiping Wei
- Schoolof Light Industry and Chemical Engineering, Dalian Polytechnic University, #1 Qinggongyuan, Dalian, 116034, PR China
| | - Nan Zheng
- Schoolof Light Industry and Chemical Engineering, Dalian Polytechnic University, #1 Qinggongyuan, Dalian, 116034, PR China
| | - Xiaoli Dong
- Schoolof Light Industry and Chemical Engineering, Dalian Polytechnic University, #1 Qinggongyuan, Dalian, 116034, PR China.
| | - Xiufang Zhang
- Schoolof Light Industry and Chemical Engineering, Dalian Polytechnic University, #1 Qinggongyuan, Dalian, 116034, PR China
| | - Hongchao Ma
- Schoolof Light Industry and Chemical Engineering, Dalian Polytechnic University, #1 Qinggongyuan, Dalian, 116034, PR China
| | - Xinxin Zhang
- Schoolof Light Industry and Chemical Engineering, Dalian Polytechnic University, #1 Qinggongyuan, Dalian, 116034, PR China
| | - Mang Xue
- Schoolof Light Industry and Chemical Engineering, Dalian Polytechnic University, #1 Qinggongyuan, Dalian, 116034, PR China
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13
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Wang H, Xu L, Liu C, Lu Y, Feng Q, Wu T, Wang R. Composite Magnetic Photocatalyst Bi₅O₇I/Mn xZn 1-xFe₂O₄: Hydrothermal-Roasting Preparation and Excellent Photocatalytic Activity. NANOMATERIALS 2019; 9:nano9010118. [PMID: 30669403 PMCID: PMC6359072 DOI: 10.3390/nano9010118] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 01/13/2019] [Accepted: 01/15/2019] [Indexed: 12/25/2022]
Abstract
A new composite magnetic photocatalyst, Bi₅O₇I/MnxZn1-xFe₂O₄, prepared by a hydrothermal-roasting method was studied. The photocatalytic properties of Bi₅O₇I/MnxZn1-xFe₂O₄ were evaluated by degradation of Rhodamine B (RhB) under simulated sunlight irradiation, and the structures and properties were characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), ultraviolet-visible light (UV-Vis) diffuse reflectance spectra (DRS), and a vibrating sample magnetometer (VSM). The results indicated that Bi₅O₇I/MnxZn1-xFe₂O₄ was an orthorhombic crystal, which was similar to that observed for Bi₅O₇I. Bi₅O₇I/MnxZn1-xFe₂O₄ consisted of irregularly shaped nanosheets that were 40⁻60 nm thick. The most probable pore size was 24.1 nm and the specific surface area was 7.07 m²/g. Bi₅O₇I/MnxZn1-xFe₂O₄ could absorb both ultraviolet and visible light, and the energy gap value was 3.22 eV. The saturation magnetization, coercivity and residual magnetization of Bi₅O₇I/MnxZn1-xFe₂O₄ were 3.9 emu/g, 126.6 Oe, and 0.7 emu/g respectively, which could help Bi₅O₇I/MnxZn1-xFe₂O₄ be separated and recycled from wastewater under the action of an external magnetic field. The recycling experiments revealed that the average recovery rate of the photocatalyst was 90.1%, and the photocatalytic activity was still more than 81.1% after five cycles.
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Affiliation(s)
- Hailong Wang
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China.
| | - Longjun Xu
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China.
| | - Chenglun Liu
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China.
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China.
| | - Yuan Lu
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China.
| | - Qi Feng
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China.
| | - Tingzeng Wu
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China.
| | - Ruiqi Wang
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China.
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14
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Wang K, Xing Z, Du M, Zhang S, Li Z, Pan K, Zhou W. Plasmon Ag and CdS quantum dot co-decorated 3D hierarchical ball-flower-like Bi5O7I nanosheets as tandem heterojunctions for enhanced photothermal–photocatalytic performance. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01945f] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Bi5O7I/Ag/CdS tandem heterojunction photocatalysts show excellent photothermal and photocatalytic performance, which is attributed to the formation of tandem heterojunctions, surface plasmon resonance, and 3D hierarchical structure.
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Affiliation(s)
- Ke Wang
- Department of Environmental Science
- School of Chemistry and Materials Science
- Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education of the People's Republic of China
- Heilongjiang University
| | - Zipeng Xing
- Department of Environmental Science
- School of Chemistry and Materials Science
- Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education of the People's Republic of China
- Heilongjiang University
| | - Meng Du
- Department of Environmental Science
- School of Chemistry and Materials Science
- Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education of the People's Republic of China
- Heilongjiang University
| | - Shiyu Zhang
- Department of Environmental Science
- School of Chemistry and Materials Science
- Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education of the People's Republic of China
- Heilongjiang University
| | - Zhenzi Li
- Department of Epidemiology and Biostatistics
- Harbin Medical University
- Harbin 150086
- P. R. China
| | - Kai Pan
- Department of Environmental Science
- School of Chemistry and Materials Science
- Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education of the People's Republic of China
- Heilongjiang University
| | - Wei Zhou
- Department of Environmental Science
- School of Chemistry and Materials Science
- Key Laboratory of Functional Inorganic Material Chemistry
- Ministry of Education of the People's Republic of China
- Heilongjiang University
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