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Zhan M, Hong Y, Fang Z, Qiu D. Magnetic recyclable visible light-driven Bi 2WO 6/Fe 3O 4/RGO for photocatalytic degradation of Microcystin-LR: Mechanism, pathway, and influencing factors. ENVIRONMENTAL RESEARCH 2024; 252:118885. [PMID: 38614200 DOI: 10.1016/j.envres.2024.118885] [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: 12/16/2023] [Revised: 03/16/2024] [Accepted: 04/04/2024] [Indexed: 04/15/2024]
Abstract
Photocatalysis was an attractive strategy that had potential to tackle the Microcystin-LR (MC-LR) contamination of aquatic ecosystems. Herein, magnetic photocatalyst Fe3O4/Bi2WO6/Reduced graphene oxide composites (Bi2WO6/Fe3O4/RGO) were employed to degrade MC-LR. The removal efficiency and kinetic constant of the optimized Bi2WO6/Fe3O4/RGO (Bi2WO6/Fe3O4-40%/RGO) was 1.8 and 2.3 times stronger than the pure Bi2WO6. The improved activity of Bi2WO6/Fe3O4-40%/RGO was corresponded to the expanded visible light adsorption ability and reduction of photogenerated carrier recombination efficiency through the integration of Bi2WO6 and Fe3O4-40%/RGO. The MC-LR removal efficiency exhibited a positive tendency to the initial density of algae cells, fulvic acid, and the concentration of MC-LR decreased. The existed anions (Cl-, CO3-2, NO3-, H2PO4-) reduced MC-LR removal efficiency of Bi2WO6/Fe3O4-40%/RGO. The Bi2WO6/Fe3O4-40%/RGO could degrade 79.3% of MC-LR at pH = 7 after 180 min reaction process. The trapping experiments and ESR tests confirmed that the h+, ∙OH, and ∙O2- played a significant role in MC-LR degradation. The LC-MS/MS result revealed the intermediates and possible degradation pathways.
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Affiliation(s)
- Mingming Zhan
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China
| | - Yu Hong
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China.
| | - Zhi Fang
- School of Materials Science and Engineering, Peking University, Beijing, 100871, China
| | - Daping Qiu
- School of Materials Science and Engineering, Peking University, Beijing, 100871, China
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Ren Z, Zhang C, Chen J, Zhang H, Meng J, Han X, Liang J. Highly efficient recovery of Zn (II) from zinc-containing wastewater by tourmaline tailings geopolymers to in-situ construct nanoscale ZnS for the photodegradation of tetracycline hydrochloride. ENVIRONMENTAL RESEARCH 2024; 259:119504. [PMID: 38945514 DOI: 10.1016/j.envres.2024.119504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 06/12/2024] [Accepted: 06/26/2024] [Indexed: 07/02/2024]
Abstract
While treating zinc-containing wastewater, recovering zinc for reuse as a secondary resource has significant environmental and economic benefits. Herein, based on the alkali-activated tourmaline tailings geopolymers (TTG) after adsorption of zinc ions (Zn (II)), a series of new composites with in-situ construction ZnS nanoparticles on TTG (ZnS/TTG) were synthesized, and used as photocatalysts for the photodegradation of tetracycline hydrochloride (TCH) in solution. Specifically, ZnS nanoparticles were uniformly and stably distributed in the layered structure of TTG, interweaving with each other to generate an interfacial electric field, which could induce more photocarrier generation. Meanwhile, TTG acted as an electron acceptor to accelerate the electron transfer at the interface, thus enhancing the photodegradation activity for TCH. The active radical quenching experiments combined with the ESR indicated that the active species produced during the photocatalytic degradation of TCH by ZnS/TTG composites were •O2- and photogenerated h+. When the initial concentration of Zn (II) was 60 mg/L, the synthesized 60-ZnS/TTG composites (0.5 g/L) reached 91.53% degradation efficiency of TCH (10 mg/L) at pH = 6. Furthermore, the possible pathways and mechanism of 60-ZnS/TTG composites photodegraded TCH were revealed with the aid of degraded intermediates. This report not only proposed valuable references for reusing heavy metal ions and removing TCH from wastewater, but also provided promising ideas for realizing the conversion of used adsorbents into high-efficiency photocatalysts.
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Affiliation(s)
- Zhixiao Ren
- Key Laboratory of Special Functional Materials for Ecological Environment and Information, Hebei University of Technology, Ministry of Education, Tianjin, China; Institute of Power Source and Ecomaterials Science, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, China
| | - Caihong Zhang
- Key Laboratory of Special Functional Materials for Ecological Environment and Information, Hebei University of Technology, Ministry of Education, Tianjin, China; Institute of Power Source and Ecomaterials Science, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, China
| | - Jinpeng Chen
- Key Laboratory of Special Functional Materials for Ecological Environment and Information, Hebei University of Technology, Ministry of Education, Tianjin, China; Institute of Power Source and Ecomaterials Science, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, China
| | - Hong Zhang
- Key Laboratory of Special Functional Materials for Ecological Environment and Information, Hebei University of Technology, Ministry of Education, Tianjin, China; Institute of Power Source and Ecomaterials Science, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, China
| | - Junping Meng
- Key Laboratory of Special Functional Materials for Ecological Environment and Information, Hebei University of Technology, Ministry of Education, Tianjin, China; Institute of Power Source and Ecomaterials Science, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, China
| | - Xiaoyu Han
- Key Laboratory of Special Functional Materials for Ecological Environment and Information, Hebei University of Technology, Ministry of Education, Tianjin, China; Institute of Power Source and Ecomaterials Science, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, China.
| | - Jinsheng Liang
- Key Laboratory of Special Functional Materials for Ecological Environment and Information, Hebei University of Technology, Ministry of Education, Tianjin, China; Institute of Power Source and Ecomaterials Science, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, China.
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Xiong W, Dong Y, Pan A. Fabricating a type II heterojunction by growing lead-free perovskite Cs 2AgBiBr 6in situ on graphite-like g-C 3N 4 nanosheets for enhanced photocatalytic CO 2 reduction. NANOSCALE 2023; 15:15619-15625. [PMID: 37712856 DOI: 10.1039/d3nr04152b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/16/2023]
Abstract
Perovskite-based photocatalysts have received significant attention for converting CO2 into fuels, such as CO, CH4 or long alkyl chains. However, the use of these catalysts is plagued by several limitations, such as poor stability, lead toxicity, and inadequate conversion efficiency due to the rapid recombination of carriers. Herein, a g-C3N4@Cs2AgBiBr6 (CABB) type II heterojunction photocatalyst has been prepared by growing lead-free CABB nanocrystals (10-14 nm) on the graphite-like carbon nitride (g-C3N4) nanosheet using the in situ crystallization method. The resulting nanocomposite, g-C3N4@CABB, demonstrated an efficient charge transfer pathway via a typical type II heterojunction. With formation rates of 10.30 μmol g-1 h-1 for CO and 0.88 μmol g-1 h-1 for CH4 under visible light irradiation, the nanocomposite exhibited enhanced photocatalytic efficiency in CO2 reduction compared to CABB and g-C3N4. The improved photocatalytic performance of the g-C3N4@CABB nanocomposite was attributed to the fabricated type II heterojunction, which boosted the interfacial charge transfer from g-C3N4 to CABB. This work will inspire the design of heterojunction-based photocatalysts and increase the fundamental understanding of perovskite-based catalysts in the CO2 photoreduction process.
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Affiliation(s)
- Wei Xiong
- State Key Laboratory of Clean and Efficient Coal-Fired Power Generation and Pollution Control/China Energy and Technology Research Institute Co., Ltd, Nanjing 210023, China.
| | - Yuehong Dong
- State Key Laboratory of Clean and Efficient Coal-Fired Power Generation and Pollution Control/China Energy and Technology Research Institute Co., Ltd, Nanjing 210023, China.
| | - Aizhao Pan
- State Key Laboratory of Clean and Efficient Coal-Fired Power Generation and Pollution Control/China Energy and Technology Research Institute Co., Ltd, Nanjing 210023, China.
- School of Chemistry, Xi'an Jiaotong University, Xianning West Road, 28, Xi'an, 710049, China
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Chen X, Xu Z, Chen J, Yao L, Xie W, He J, Li N, Li J, Xu S, Zhu Y, Chen X, Zhu R. Continuous surface Z-Scheme and Schottky heterojunction Au/La2Ti2O7/Ag3PO4 catalyst with boosted charge separation through dual channels for excellent photocatalysis: Highlight influence factors regulation and catalytic system applicability. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Balasurya S, Okla MK, AbdElgawad H, Al-Ghamdi AA, Abdel-Maksoud MA, Al-Amri SS, Madany MMY, Khan SS. Self-propelled nanojets an interfacial Schottky junctions modulated oxygen vacancies enriched for enhanced photo-Fenton degradation of organic contaminant: Improving H 2O 2 generation, Fe 3+/Fe 2+ cycle and enhancing plant metabolism. CHEMOSPHERE 2023; 314:137516. [PMID: 36521743 DOI: 10.1016/j.chemosphere.2022.137516] [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: 07/14/2022] [Revised: 11/27/2022] [Accepted: 12/07/2022] [Indexed: 06/17/2023]
Abstract
The study reports an innovative approach on sunlit driven heterostructure photocatalytic generation of H2O2 and removal of cefixime. In the present work, we have fabricated Mn/Mg doped CoFe2O4 modified CaCr2O4 decorated by Ag3PO4 quantum dots (Ag3PO4 QDs), a p-n-p nano heterojunction. The study promotes the photocatalytic production of H2O2 and self-Fenton photocatalytic degradation of cefixime. Egg white-assisted synthesis of Mn-doped CoFe2O4 causes the lattice oxygen defect, which enhances the photocatalytic activity. Lattice oxygen defect enable the adsorption of O2, which enable the conversion of •O2 in the valence band of CoFe2O4 for the endogenous production of H2O2. The higher in the surface area enhance the photocatalytic activity under visible light irradiation. Mn-CoFe2O4-CaCr2O4-Ag3PO4 QDs enables the complete photocatalytic degradation of cefixime (99.9%) and the complete removal was determined by total organic carbon (TOC) removal and it was around 99.4%. Meanwhile the photocatalytic degradation pathway of cefixime was determined by LC-MS/MS. Reusability of the nano heterojunction was determined by six cycle test, and the reusability of the nano heterojunction was 99.8%. Further, the toxicity of the nanomaterial was studied in maize plant and the results shows that the nanoheterojunction enhances the maize growth. The study systematically reveals the robust activity of nano heterojunction for sustainable water treatment.
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Affiliation(s)
- S Balasurya
- Centre for Energy, Materials and Telecommunications, Institut National de la Recherche Scientifique, Varennes, QC, Canada
| | - Mohammad K Okla
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Hamada AbdElgawad
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, 2020, Antwerpen, Belgium
| | - Abdullah A Al-Ghamdi
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Mostafa A Abdel-Maksoud
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, 2020, Antwerpen, Belgium
| | - Saud S Al-Amri
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, 2020, Antwerpen, Belgium
| | - Mahmoud M Y Madany
- Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - S Sudheer Khan
- Department of Oral Medicine and Radiology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, 600077, Tamil Nadu, India.
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Wu C, Dai J, Ma J, Zhang T, Qiang L, Xue J. Mechanistic study of B-TiO2/BiVO4 S-scheme heterojunction photocatalyst for tetracycline hydrochloride removal and H2 production. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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Promoted electron transfer in Fe2+/Fe3+ co-doped BiVO4/Ag3PO4 S-scheme heterojunction for efficient photo-Fenton oxidation of antibiotics. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Chen Z, Li X, Wu Y, Duan A, Wang D, Yang Q, Fan Y. Achieving simultaneous hydrogen evolution and organic pollutants degradation through the modification of Ag3PO4 using Cs2AgBiBr6 quantum dots and graphene hydrogel. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Dai M, He Z, Cao W, Zhang J, Chen W, Jin Q, Que W, Wang S. Rational construction of S-scheme BN/MXene/ZnIn2S4 heterojunction with interface engineering for efficient photocatalytic hydrogen production and chlorophenols degradation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.123004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Feng H, Zhang C, Luo M, Hu Y, Dong Z, Xue S, Chu PK. A dual S-scheme TiO 2@In 2Se 3@Ag 3PO 4 heterojunction for efficient photocatalytic CO 2 reduction. NANOSCALE 2022; 14:16303-16313. [PMID: 36301134 DOI: 10.1039/d2nr04707a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The excellent photoresponse of semiconductors enables them to be promising photocatalysts for CO2 reduction, but practical application is hampered by fast recombination of photogenerated carriers, low CO2 capture capacity and poor stability. Herein, mesoporous hollow nanospheres of a dual S-scheme titanium dioxide@indium selenide@silver phosphate (TiO2@In2Se3@Ag3PO4) heterojunction with a large specific surface area are designed and synthesized. The products of photocatalytic CO2 reduction are CH4, CH3OH and CO with yields of 3.98, 4.32 and 8.2 μmol g-1 h-1, respectively, and the photocatalysts exhibit excellent cycle performance. The excellent photocatalytic performance is attributed to the large specific surface area of the samples and the construction of dual S-scheme heterojunctions. The large specific surface area can provide sufficient active sites for photocatalytic activity. Simultaneously, the built-in electric field (IEF) in the dual S-scheme exposed to light can facilitate the migration of photogenerated electrons from the CB of the oxidation photocatalyst (OP) to the VB of the reduction semiconductor (RP), where they recombine with the photogenerated holes on the VB of the RP, leaving behind photogenerated carriers with high redox ability for photocatalytic activity. This work provides new insights into the mechanism and design of highly efficient heterojunction photocatalysts for CO2 reduction.
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Affiliation(s)
- Hange Feng
- College of Information Science and Technology, Donghua University, Shanghai 201620, P. R. China.
| | - Chaomin Zhang
- School of Mathematics, Physics and Statistics, Shanghai University of Engineering Science, Shanghai 201620, China.
| | - Menghao Luo
- College of Science, Donghua University, Shanghai 201620, P. R. China.
| | - Yuechuan Hu
- College of Science, Donghua University, Shanghai 201620, P. R. China.
| | - Zibo Dong
- College of Science, Donghua University, Shanghai 201620, P. R. China.
| | - Shaolin Xue
- College of Science, Donghua University, Shanghai 201620, P. R. China.
| | - Paul K Chu
- Department of Physics, Department of Materials Science and Engineering, and Department of Biomedical Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.
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Multifunctional magnetic bentonite induced hierarchical BiOBr coupling Bi nanoparticles and oxygen vacancies for enhanced photocatalytic performance. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Zhu P, Lin J, Liu M, Duan M, Luo D, Wu X, Zhang S. Nd2Sn2O7/Bi2Sn2O7/Ag3PO4 double Z-type heterojunction for antibiotic photodegradation under visible light irradiation: Mechanism, optimization and pathways. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Xu C, Jin Z, Yang J, Cui J, Hu J, Li Z, Chen C, Liu F, Hu R. High surface area B-doped LaFeO3/Ag/Ag3PO4 as a Z-scheme photocatalyst for facilitate phenol degradation. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129668] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Ge X, Meng G, Liu B. Visible light-Fenton degradation of tetracycline hydrochloride over oxygen-vacancy-rich LaFeO3/polystyrene: Mechanism and degradation pathways. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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