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Xia Z, Wang L, Tan W, Yuan L, He X, Wang J, Chen L, Zeng S, Lu S, Jiao Z. Visible-Light Photocatalytic Degradation Efficiency of Tetracycline and Rhodamine B Using a Double Z-Scheme Heterojunction Catalyst of UiO-66-NH 2/BiOCl/Bi 2S 3. Inorg Chem 2024; 63:14578-14590. [PMID: 39028930 DOI: 10.1021/acs.inorgchem.4c01917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/21/2024]
Abstract
BiOCl is a promising photocatalyst, but due to its weak visible light absorption capacity and low photogenerated electron-hole pair separation rate, its practical application is limited to a certain extent. In this study, a novel double Z-scheme heterojunction UiO-66-NH2/BiOCl/Bi2S3 catalyst was constructed to broaden the visible light response range and promote high photogenerated hole-electron separation of BiOCl. Its photocatalytic performance is evaluated by dissociating tetracycline (TC) and rhodamine B (RhB) in visible light. The optimal proportion of UiO-66-NH2/BiOCl/Bi2S3 hybrids exhibits the best degradation efficiency of visible light illumination (∼93% in 120 min for TC and ∼98% in 60 min for RhB). The synergistic effect of a large visible light response range and the Z-scheme charge transfer mechanism ensure the excellent visible photocatalytic activity of UiO-66-NH2/BiOCl/Bi2S3. It is proven that h+ and •O2- are the main active substances in the photocatalysis process by active substance capture experiments and electron spin resonance tests. The intermediates and degradation processes are analyzed by high-performance liquid chromatography-mass spectrometry. This study proves that the new UiO-66-NH2/BiOCl/Bi2S3 photocatalyst has great application potential in the field of water pollution degradation and will provide a new idea for the optimization of BiOCl.
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Affiliation(s)
- Zijie Xia
- Institute for Sustainable Energy/College of Science, Shanghai University, 99 Shangda Road, Shanghai 200444, PR China
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, P. R. China
| | - Linlin Wang
- Institute for Sustainable Energy/College of Science, Shanghai University, 99 Shangda Road, Shanghai 200444, PR China
| | - Wenqi Tan
- Institute for Sustainable Energy/College of Science, Shanghai University, 99 Shangda Road, Shanghai 200444, PR China
| | - Linying Yuan
- Institute for Sustainable Energy/College of Science, Shanghai University, 99 Shangda Road, Shanghai 200444, PR China
| | - Xinhua He
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, P. R. China
| | - Juan Wang
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Luyang Chen
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Suyuan Zeng
- Department of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, P. R. China
| | - Shigang Lu
- Institute for Sustainable Energy/College of Science, Shanghai University, 99 Shangda Road, Shanghai 200444, PR China
| | - Zheng Jiao
- Shanghai Applied Radiation Institute, Shanghai University, Shanghai 201800, P. R. China
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Zhu T, Yao Z, Pan J, Hu F, Zhang S, Fan S, Xing C, Yu Z, Wang S, Hou Y. Biomass-Derived Carbon Quantum Dots Chemical Bonding with Sn-Doped Bi 2O 2CO 3 Endowed Fast Carriers' Dynamics and Stabilized Oxygen Vacancies for Efficient Decontamination of Combined Pollutants. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2311916. [PMID: 38344887 DOI: 10.1002/smll.202311916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/29/2024] [Indexed: 07/19/2024]
Abstract
Surface defects on photocatalysts could promote carrier separation and generate unsaturated sites for chemisorption and reactant activation. Nevertheless, the inactivation of oxygen vacancies (OVs) would deteriorate catalytic activity and limit the durability of defective materials. Herein, bagasse-derived carbon quantum dots (CQDs) are loaded on the Sn-doped Bi2O2CO3 (BOC) via hydrothermal procedure to create Bi─O─C chemical bonding at the interface, which not only provides efficient atomic-level interfacial electron channels for accelerating carriers transfer, but also enhances durability. The optimized Sn-BOC/CQDs-2 achieves the highest photocatalytic removal efficiencies for levofloxacin (LEV) (88.7%) and Cr (VI) (99.3%). The elimination efficiency for LEV and Cr (VI) from the Sn-BOC/CQDs-2 is maintained at 55.1% and 77.0% while the Sn-BOC is completely deactivated after four cycle tests. Furthermore, the key role of CQDs in stabilization of OVs is to replace OVs as the active center of H2O and O2 adsorption and activation, thereby preventing reactant molecules from occupying OVs. Based on theoretical calculations of the Fukui index and intermediates identification, three possible degradation pathways of LEV are inferred. This work provides new insight into improving the stability of defective photocatalysts.
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Affiliation(s)
- Tingting Zhu
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Zuofang Yao
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Jinghui Pan
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Fengtao Hu
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Shiming Zhang
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Songyu Fan
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Chenchen Xing
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
| | - Zebin Yu
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
- Key Laboratory of Environmental Protection (Guangxi University), Education Department of Guangxi Zhuang Autonomous Region, Nanning, 530004, China
- Guangxi Key Laboratory of Emerging Contaminants Monitoring, Early Warning and Environmental Health Risk Assessment, Nanning, 530000, China
| | - Shuangfei Wang
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China
| | - Yanping Hou
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China
- Key Laboratory of Environmental Protection (Guangxi University), Education Department of Guangxi Zhuang Autonomous Region, Nanning, 530004, China
- Guangxi Key Laboratory of Emerging Contaminants Monitoring, Early Warning and Environmental Health Risk Assessment, Nanning, 530000, China
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3
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Sohn EJ, Jun BM, Nam SN, Park CM, Jang M, Son A, Yoon Y. Photocatalytic boron nitride-based nanomaterials for the removal of selected organic and inorganic contaminants in aqueous solution: A review. CHEMOSPHERE 2024; 349:140800. [PMID: 38040264 DOI: 10.1016/j.chemosphere.2023.140800] [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: 08/17/2023] [Revised: 11/20/2023] [Accepted: 11/22/2023] [Indexed: 12/03/2023]
Abstract
Boron nitride (BN) coupled with various conventional and advanced photocatalysts has been demonstrated to exhibit extraordinary activity for photocatalytic degradation because of its unique properties, including a high surface area, constant wide-bandgap semiconducting property, high thermal-oxidation resistance, good hydrogen-adsorption performance, and high chemical/mechanical stability. However, only limited reviews have discussed the application of BN or BN-based nanomaterials as innovative photocatalysts, and it does not cover the recent results and the developments on the application of BN-based nanomaterials for water purification. Herein, we present a complete review of the present findings on the photocatalytic degradation of different contaminants by various BN-based nanomaterials. This review includes the following: (i) the degradation behavior of different BN-based photocatalysts for various contaminants, such as selected dye compounds, pharmaceuticals, personal care products, pesticides, and inorganics; (ii) the stability/reusability of BN-based photocatalysts; and (iii) brief discussion for research areas/future studies on BN-based photocatalysts.
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Affiliation(s)
- Erica Jungmin Sohn
- Water Supply and Sewerage Department, DOHWA Engineering Co., LTD, 438, Samseong-ro, Gangnam-gu, Seoul, 06178, Republic of Korea
| | - Byung-Moon Jun
- Radwaste Management Center, Korea Atomic Energy Research Institute (KAERI), 111 Daedeok-daero 989 Beon-gil, Yuseong-gu, Daejeon, 34057, Republic of Korea
| | - Seong-Nam Nam
- Department of Environmental Science and Engineering, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea
| | - Chang Min Park
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea
| | - Min Jang
- Department of Environmental Engineering, Kwangwoon University, 447-1 Wolgye-dong Nowon-gu, Seoul, Republic of Korea
| | - Ahjeong Son
- Department of Environmental Science and Engineering, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea.
| | - Yeomin Yoon
- Department of Environmental Science and Engineering, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea; Department of Civil and Environmental Engineering, University of South Carolina, Columbia, 300 Main Street, SC, 29208, USA.
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4
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Zhang Y, Yu H, Zhai R, Zhang J, Gao C, Qi K, Yang L, Ma Q. Recent Progress in Photocatalytic Degradation of Water Pollution by Bismuth Tungstate. Molecules 2023; 28:8011. [PMID: 38138501 PMCID: PMC10745909 DOI: 10.3390/molecules28248011] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/06/2023] [Accepted: 12/07/2023] [Indexed: 12/24/2023] Open
Abstract
Photocatalysis has emerged as a highly promising, green, and efficient technology for degrading pollutants in wastewater. Among the various photocatalysts, Bismuth tungstate (Bi2WO6) has gained significant attention in the research community due to its potential in environmental remediation and photocatalytic energy conversion. However, the limited light absorption ability and rapid recombination of photogenerated carriers hinder the further improvement of Bi2WO6's photocatalytic performance. This review aims to present recent advancements in the development of Bi2WO6-based photocatalysts. It delves into the photocatalytic mechanism of Bi2WO6 and summarizes the achieved photocatalytic characteristics by controlling its morphology, employing metal and non-metal doping, constructing semiconductor heterojunctions, and implementing defective engineering. Additionally, this review explores the practical applications of these modified Bi2WO6 photocatalysts in wastewater purification. Furthermore, this review addresses existing challenges and suggests prospects for the development of efficient Bi2WO6 photocatalysts. It is hoped that this comprehensive review will serve as a valuable reference and guide for researchers seeking to advance the field of Bi2WO6 photocatalysis.
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Affiliation(s)
- Yingjie Zhang
- College of Agriculture and Biological Science, Dali University, Dali 671000, China; (Y.Z.); (H.Y.); (R.Z.); (J.Z.); (C.G.)
- Key Laboratory of Ecological Microbial Remediation Technology of Yunnan Higher Education Institutes, Dali University, Dali 671000, China
| | - Huijuan Yu
- College of Agriculture and Biological Science, Dali University, Dali 671000, China; (Y.Z.); (H.Y.); (R.Z.); (J.Z.); (C.G.)
| | - Ruiqi Zhai
- College of Agriculture and Biological Science, Dali University, Dali 671000, China; (Y.Z.); (H.Y.); (R.Z.); (J.Z.); (C.G.)
| | - Jing Zhang
- College of Agriculture and Biological Science, Dali University, Dali 671000, China; (Y.Z.); (H.Y.); (R.Z.); (J.Z.); (C.G.)
| | - Cuiping Gao
- College of Agriculture and Biological Science, Dali University, Dali 671000, China; (Y.Z.); (H.Y.); (R.Z.); (J.Z.); (C.G.)
| | - Kezhen Qi
- College of Pharmacy, Dali University, Dali 671000, China
| | - Li Yang
- College of International Education, Dali University, Dali 671000, China;
| | - Qiang Ma
- School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China
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5
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Su X, Wang S, Liu J, Zhang D, Pu X, Cai P. S-scheme heterojunction of hollow corncob-like ZnIn 2S 4/LaFeO 3 for water splitting and tetracycline degradation. CHEMOSPHERE 2023; 340:139777. [PMID: 37567276 DOI: 10.1016/j.chemosphere.2023.139777] [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: 05/15/2023] [Revised: 07/27/2023] [Accepted: 08/08/2023] [Indexed: 08/13/2023]
Abstract
Reasonable design of heterojunction photocatalysts with high-quality interfacial coupling is an effective way to improve the photocatalytic activity of semiconductors. Herein, we successfully decorated Zinc indium sulfide (ZnIn2S4, ZIS) on perovskite Lanthanum ferrite (LaFeO3, LFO) with more active sites by a pre-hydrothermal combined post-calcination method, and constructed S-scheme heterojunction photocatalyst with a unique hollow corncob-like morphology for efficient photocatalytic hydrogen production and tetracycline (TC) degradation. When the mass ratio of LFO is 35% and 15%, the ZIS/LFO photocatalyst exhibits the best hydrogen evolution rate and TC photodegradation performance, respectively. Notably, the optimum hydrogen production rate is 6 times that of pure ZIS with excellent cycling stability. The enhanced photoactivity can be explained by the hollow corncob-like morphology and the formed S-scheme heterojunction with close interface contact between ZIS and LFO, which significantly improves the spatial separation and migration efficiency of photoexcited carriers, while maintaining a high redox potential. Finally, it provides an effective support for the photocatalytic mechanism through calculation results of density functional theory. This work not only provides a novel construction strategy of photocatalysts for efficient photocatalytic hydrogen evolution and organic pollutant degradation, but also opens up a new insight for perovskite-modified S-scheme heterojunction.
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Affiliation(s)
- Xiaoli Su
- School of Materials Science and Engineering, Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, Liaocheng, 252000, PR China
| | - Shikai Wang
- School of Materials Science and Engineering, Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, Liaocheng, 252000, PR China
| | - Junchang Liu
- School of Materials Science and Engineering, Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, Liaocheng, 252000, PR China
| | - Dafeng Zhang
- School of Materials Science and Engineering, Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, Liaocheng, 252000, PR China.
| | - Xipeng Pu
- School of Materials Science and Engineering, Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, Liaocheng, 252000, PR China.
| | - Peiqing Cai
- College of Optical and Electronic Technology, China Jiliang University, Hangzhou, 310018, PR China
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6
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Zhang D, Zhang R, Jiang X, Zhang D, Li H, Liu J, Pu X, Cai P. A novel SnIn 4S 8/ZnFe 2O 4 S-scheme heterojunction with excellent magnetic properties and photocatalytic degradation activity for tetracycline. Dalton Trans 2023; 52:14956-14966. [PMID: 37800910 DOI: 10.1039/d3dt02353b] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
The development of efficient and economical photocatalysts is considered a promising strategy for pollution remediation. Magnetically separable SnIn4S8/ZnFe2O4 composites (SIS/ZFO) were prepared by combining SIS with ZFO. The composite with a 30% ZFO mass ratio (SIS/ZFO-30) was the most effective and achieved 60% removal of tetracycline (TC) in 120 min. It has a rate constant of 7.94 × 10-3 min-1, which is 6.3 and 27.2 times higher than those of pure SIS and pure ZFO, respectively. The improved photocatalytic performance can be attributed to the formation of S-scheme heterojunctions between SIS and ZFO, which results in the strong absorption of visible light, the enhanced separation of electron-hole pairs, and the higher redox ability of photoinduced charges. Additionally, SIS/ZFO composites have excellent magnetic properties and high stability, and the recovered samples still retained good photocatalytic degradation performances after four cycles of experiments. Thus, the coupling of SIS with ZFO provides a valuable strategy for enhancing photocatalytic potential and offers a promising pathway for water remediation.
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Affiliation(s)
- Dafeng Zhang
- School of Materials Science and Engineering, Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, Liaocheng 252000, P. R. China.
| | - Ruiqi Zhang
- School of Materials Science and Engineering, Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, Liaocheng 252000, P. R. China.
| | - Xue Jiang
- School of Materials Science and Engineering, Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, Liaocheng 252000, P. R. China.
| | - Dong Zhang
- School of Physics Science and Information Technology, Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University, Liaocheng, 252000, P. R. China
| | - Hengshuai Li
- School of Physics Science and Information Technology, Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University, Liaocheng, 252000, P. R. China
| | - Junchang Liu
- School of Materials Science and Engineering, Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, Liaocheng 252000, P. R. China.
| | - Xipeng Pu
- School of Materials Science and Engineering, Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, Liaocheng 252000, P. R. China.
| | - Peiqing Cai
- College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, P. R. China
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Khedr TM, El-Sheikh SM, Kowalska E. Bismuth Tungstate Nanoplates-Vis Responsive Photocatalyst for Water Oxidation. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2438. [PMID: 37686946 PMCID: PMC10490350 DOI: 10.3390/nano13172438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 08/21/2023] [Accepted: 08/25/2023] [Indexed: 09/10/2023]
Abstract
The development of visible-light-responsive (VLR) semiconductor materials for effective water oxidation is significant for a sustainable and better future. Among various candidates, bismuth tungstate (Bi2WO6; BWO) has attracted extensive attention because of many advantages, including efficient light-absorption ability, appropriate redox properties (for O2 generation), adjustable morphology, low cost, and profitable chemical and optical characteristics. Accordingly, a facile solvothermal method has been proposed in this study to synthesize two-dimensional (2D) BWO nanoplates after considering the optimal preparation conditions (solvothermal reaction time: 10-40 h). To find the key factors of photocatalytic performance, various methods and techniques were used for samples' characterization, including XRD, FE-SEM, STEM, TEM, HRTEM, BET-specific surface area measurements, UV/vis DRS, and PL spectroscopy, and photocatalytic activity was examined for water oxidation under UV and/or visible-light (vis) irradiation. Famous commercial photocatalyst-P25 was used as a reference sample. It was found that BWO crystals grew anisotropically along the {001} basal plane to form nanoplates, and all properties were controlled simultaneously by tuning the synthesis time. Interestingly, the most active sample (under both UV and vis), prepared during the 30 h solvothermal reaction at 433 K (BWO-30), was characterized by the smallest specific surface area and the largest crystals. Accordingly, it is proposed that improved crystallinity (which hindered charge carriers' recombination, as confirmed by PL), efficient photoabsorption (using the smallest bandgap), and 2D mesoporous structure are responsible for the best photocatalytic performance of the BWO-30 sample. This report shows for the first time that 2D mesoporous BWO nanoplates might be successfully prepared through a facile template-free solvothermal approach. All the above-mentioned advantages suggest that nanostructured BWO is a prospective candidate for photocatalytic applications under natural solar irradiation.
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Affiliation(s)
- Tamer M Khedr
- Institute for Catalysis, Hokkaido University, N21, W10, Sapporo 001-0021, Japan
- Nanomaterials and Nanotechnology Department, Central Metallurgical Research and Development Institute (CMRDI), P.O. Box 87 Helwan, Cairo 11421, Egypt
| | - Said M El-Sheikh
- Nanomaterials and Nanotechnology Department, Central Metallurgical Research and Development Institute (CMRDI), P.O. Box 87 Helwan, Cairo 11421, Egypt
| | - Ewa Kowalska
- Institute for Catalysis, Hokkaido University, N21, W10, Sapporo 001-0021, Japan
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
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8
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Tao L, Wang J, Luo Z, Ren J, Yin D. Fabrication of an S-Scheme Heterojunction Photocatalyst MoS 2/PANI with Greatly Enhanced Photocatalytic Performance. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:11426-11438. [PMID: 37531465 DOI: 10.1021/acs.langmuir.3c01295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
As a promising catalyst, MoS2 has been widely studied owing to its high chemical reactivity, excellent electrical carrier mobility, good optical properties, and narrow band gap. However, the high recombination rate of photoinduced charge carriers limits its practical application in photocatalysis. In this study, MoS2 was coupled with PANI to fabricate an S-scheme heterojunction MoS2/PANI. The synthesized products were characterized systematically, and their photocatalytic properties were evaluated by photocatalytic degradation of norfloxacin (NOR) and rhodamine B (RhB). The obtained results indicated that the fabricated MoS2/PANI inorganic-organic heterojunction displayed tremendously enhanced photocatalytic activity. The degradation efficiencies for 60 mg L-1 of NOR and RhB are 86 and 100% under the simulated sunlight irradiation for 1 h with 10 mg of catalyst, which are 13 and 47 times higher than those of pure MoS2, respectively. Interestingly, it is superior to the previously reported related materials. The remarkably enhanced photocatalytic activity of MoS2 is assigned to the high charge conductivity feature of PANI and the formed S-scheme heterojunction that result in a steric separation of holes and electrons and conserve the initial powerful redox ability of the parent catalysts. This study provides a facile method to greatly improve the photocatalytic activity of MoS2 and facilitates its application for highly efficient removal of organic pollutants, such as antibiotic drugs and organic dyes, utilizing solar energy.
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Affiliation(s)
- Liyue Tao
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Jun Wang
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Zhaoyue Luo
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Junjie Ren
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
| | - Dongguang Yin
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
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9
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Flower-like microspheres Z-scheme Bi2Sn2O7/NiAl-LDH heterojunction for boosting photocatalytic CO2 reduction under visible light. J Colloid Interface Sci 2023; 629:604-615. [DOI: 10.1016/j.jcis.2022.09.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 08/27/2022] [Accepted: 09/02/2022] [Indexed: 11/23/2022]
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10
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Li Z, Li Z, Liang J, Fan W, Li Y, Shen Y, Huang D, Yu Z, Wang S, Hou Y. Bi-functional S-scheme S-Bi2WO6/NiO heterojunction for photocatalytic ciprofloxacin degradation and CO2 reduction: mechanisms and pathways. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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11
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Shi L, Yin J, Liu Y, Liu H, Zhang H, Tang H. Embedding Cu3P quantum dots onto BiOCl nanosheets as a 0D/2D S-scheme heterojunction for photocatalytic antibiotic degradation. CHEMOSPHERE 2022; 309:136607. [PMID: 36179920 DOI: 10.1016/j.chemosphere.2022.136607] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 09/12/2022] [Accepted: 09/23/2022] [Indexed: 06/16/2023]
Abstract
The development of highly efficient photocatalysts is vital for solvinge the problem of environmental pollution. In this study, a novel zero-/two-dimensional (0D/2D) S-scheme heterojunction was fabricated by integrating 0D copper phosphide (Cu3P) quantum dots (QDs) with a size in the range of 3-8 nm onto 2D bismuth oxychloride (BiOCl) nanosheets using a self-assembly tactic. The Cu3P/BiOCl presented intimate interface contact and high photocatalytic activity for the degradation of antibiotics (tetracycline hydrochloride (TC), oxytetracycline, ofloxacin). The optimal sample exhibited the highest photocatalytic TC degradation, with a total removal rate of 86% after 6 min under full-spectrum irradiation, which was higher than that of compared to individual BiOCl. The improved activity of the Cu3P/BiOCl heterojunction was attributed to the enhanced separation of the photogenerated carriers due to the S-scheme mode which can promote the recombination of useless photogenerated carriers and maintain photogenerated carriers with stronger redox potentials for photocatalytic reaction. In addition, employing Cu3P QDs and BiOCl nanosheets to construct an S-scheme composite can offer abundant active sites for antibiotic degradation. In brief, this study demonstrates that Cu3P QDs are an effective cocatalyst for degrading organic pollutants, which provides novel inspiration for the future design of green recycling photocatalysts for wastewater remediation.
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Affiliation(s)
- Liang Shi
- Department of Nuclear Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, 210006, China
| | - Jiangning Yin
- Department of Emergency, The Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing, Jiangsu, 211100, China
| | - Yanru Liu
- Department of Emergency, The Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212000, China
| | - Hanqiong Liu
- Department of Emergency, The Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212000, China
| | - Hao Zhang
- Department of Emergency, The Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu, 212000, China.
| | - Hua Tang
- School of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, PR China.
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12
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Huang J, Li C, Hao H, Li L, Zhu B, Chen X, Tao H. Photocatalytic degradation of tetracycline antibiotic over a flower-like S-doped BiOBr: Performance, mechanism insight and toxicity assessment. FRONTIERS IN NANOTECHNOLOGY 2022. [DOI: 10.3389/fnano.2022.1023489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A new catalyst of S-BiOBr flower-like morphology was synthesized by simple pyrolysis and further used for photocatalytic degradation of TC. Phase structure analysis, elemental analysis and micromorphological analysis confirmed that S doping has a reinforcing effect on the polarization between the [Bi2O2S]2+ and [Br2]2- layers and is conducive to interlayer polarization and rapid charge transfer. In addition, its unique petal morphology is more favorable to the adsorption of contaminants on its surface and accelerates the reaction of catalyst surfactant with contaminants. It was also found that S-BiOBr degrades TC significantly better than single BiOBr@HCs, with up to 99.1% in 60 min illumination. In addition, the S-BiOBr catalyst has good reusability in antibiotic degradation. The results of photocatalytic mechanism analysis show that free radical O2− plays a major role in the photodegradation of organic model pollutants. Intermediates in TC degradation were identified, and their potential degradation pathways were prospected, and the toxicity development of TC in the degradation process was analyzed by toxicity assessment software. The S-BiOBr photocatalytic system developed in this paper provides a new idea for effective modification of bismuth-based semiconductors and has important guiding significance for future water purification.
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