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Wang W, Li Z, Wu K, Dai G, Chen Q, Zhou L, Zheng J, Ma L, Li G, Wang W, An T. Novel Ag-bridged dual Z-scheme g-C 3N 4/BiOI/AgI plasmonic heterojunction: Exceptional photocatalytic activity towards tetracycline and the mechanism insight. J Environ Sci (China) 2023; 131:123-140. [PMID: 37225374 DOI: 10.1016/j.jes.2022.11.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/26/2022] [Accepted: 11/01/2022] [Indexed: 05/26/2023]
Abstract
Rational design and synthesis of highly efficient and robust photocatalysts with positive exciton splitting and interfacial charge transfer for environmental applications is critical. Herein, aiming at overcoming the common shortcomings of traditional photocatalysts such as weak photoresponsivity, rapid combination of photo-generated carriers and unstable structure, a novel Ag-bridged dual Z-scheme g-C3N4/BiOI/AgI plasmonic heterojunction was successfully synthesized using a facile method. Results showed that Ag-AgI nanoparticles and three-dimensional (3D) BiOI microspheres were decorated highly uniformly on the 3D porous g-C3N4 nanosheet, resulting in a higher specific surface area and abundant active sites. The optimized 3D porous dual Z-scheme g-C3N4/BiOI/Ag-AgI manifested exceptional photocatalytic degradation efficiency of tetracycline (TC) in water with approximately 91.8% degradation efficiency within 165 min, outperforming majority of the reported g-C3N4-based photocatalysts. Moreover, g-C3N4/BiOI/Ag-AgI exhibited good stability in terms of activity and structure. In-depth radical scavenging and electron paramagnetic resonance (EPR) analyses confirmed the relative contributions of various scavengers. Mechanism analysis indicated that the improved photocatalytic performance and stability were ascribed to the highly ordered 3D porous framework, fast electron transfer of dual Z-scheme heterojunction, desirable photocatalytic performance of BiOI/AgI and synergistic effect of Ag plasmas. Therefore, the 3D porous Z-scheme g-C3N4/BiOI/Ag-AgI heterojunction had a good prospect for applications in water remediation. The current work provides new insight and useful guidance for designing novel structural photocatalysts for environment-related applications.
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Affiliation(s)
- Wenxia Wang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China; Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Zhen Li
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
| | - Kailin Wu
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
| | - Guodong Dai
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
| | - Qingping Chen
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
| | - Lihua Zhou
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
| | - Junxia Zheng
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, China
| | - Liang Ma
- Guangzhou Key lab of Clean Transport Energy and Chemistry, Guangdong University of Technology, Guangzhou 510006, China
| | - Guiying Li
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Wanjun Wang
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China
| | - Taicheng An
- Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China; Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control, Guangdong Technology Research Center for Photocatalytic Technology Integration and Equipment Engineering, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
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2
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Gnanaguru MVL, Naushad M, Tatarchuk T, Ghangrekar MM, Chowdhury S. One-step calcination synthesis of 2D/2D g-C 3N 4/WS 2 van der Waals heterojunction for visible light-induced photocatalytic degradation of pharmaceutical pollutants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27714-7. [PMID: 37271787 DOI: 10.1007/s11356-023-27714-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 05/13/2023] [Indexed: 06/06/2023]
Abstract
It is well-documented that accumulation of pharmaceutically active compounds (PhACs), such as antibiotics, in aquatic ecosystems is a prominent environmental hazard. Herein, a series of 2D materials-based heterojunctions, conceptualized based on the integration of graphitic carbon nitride (g-C3N4) with tungsten disulfide (WS2), was fabricated through a facile one-step calcination process, and systematically evaluated for eliminating tetracycline (TC) and sulfamethoxazole (SMX) from aqueous matrices. The microstructure, optical properties, and surface chemistry of the as-prepared composites were examined with a range of microscopy and spectroscopy techniques. In comparison with pristine g-C3N4 or bare WS2, the g-C3N4/WS2 material, with optimal WS2 loading, showed significantly improved photocatalytic activity, towards degradation of TC (84%) and SMX (96%), under visible light. Free radical scavenging experiments revealed that superoxide anions and hydroxyl radicals were predominantly responsible for the rapid breakdown of the PhACs. In addition, the dissociation intermediates and residues were identified and the plausible photocatalytic degradation pathways of TC and SMX over the as-constructed 2D/2D heterojunction were discussed. Further, the photocatalysis end products were non-toxic, as inferred via the resazurin cell viability assay, employing Escherichia coli as a model organism. Most importantly, the 2D/2D g-C3N4/WS2 architecture was structurally resilient and exhibited a fairly stable cycling performance for persistent usage in wastewater treatment. The outcomes of this study testify that 2D/2D heterojunction of g-C3N4 fragments and WS2 nanosheets holds great promise for destroying antibiotics or their metabolites, usually present in wastewaters.
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Affiliation(s)
- Mario Vino Lincy Gnanaguru
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India
| | - Mu Naushad
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Tetiana Tatarchuk
- Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa, 2, 30-387, Kraków, Poland
| | - Makarand M Ghangrekar
- Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India
| | - Shamik Chowdhury
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India.
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3
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Reddy CV, Nagar A, Shetti NP, Reddy IN, Basu S, Shim J, Kakarla RR. Novel g-C 3N 4/BiVO 4 heterostructured nanohybrids for high efficiency photocatalytic degradation of toxic chemical pollutants. CHEMOSPHERE 2023; 322:138146. [PMID: 36806805 DOI: 10.1016/j.chemosphere.2023.138146] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 01/07/2023] [Accepted: 02/12/2023] [Indexed: 06/18/2023]
Abstract
Novel heterostructured hybrid catalysts are essential for the efficient photocatalytic removal of organic pollutants from wastewater generated by the pharmaceutical and textile industries. In this study, novel g-C3N4/BiVO4 nanohybrid catalysts were prepared using a solvothermal technique, and examined their structural and optical properties using different characterizations. The X-ray diffraction analysis confirmed the monoclinic crystal phase of BiVO4. Field emission scanning electron microscopy (FESEM) images revealed that g-C3N4 sheets anchored on the surface of BiVO4 nanospheres. X-ray photoelectron spectroscopy (XPS) analysis confirmed the oxidation states of g-C3N4/BiVO4 composite sample. UV-Vis DRS spectroscopy analysis revealed that the composite (2.08 eV) sample had a reduced bandgap compared to other samples. The photocatalytic properties of the prepared samples were tested in the presence of organic methylene blue (MB) and antibiotic tetracycline (TC) pollutants under visible light illumination. The hybrid composite catalyst exhibited enhanced photocatalytic degradation efficiency of MB (88%) and TC (89%) pollutants at elevated rate constants of 0.0128 and 0.01174 min-1, respectively. The improved catalytic performance of the composite catalyst is due to the heterojunctions between g-C3N4 and BiVO4 that successfully reduced the rate of charge carrier recombination in the catalyst system. Scavenger experiments revealed that O2●- and h+ radicals played a main role in the degradation of the chemical pollutants. The developed g-C3N4/BiVO4 heterostructured catalyst is a suitable candidate for removing contaminants from industrial wastewater because of its facile fabrication and exceptional photocatalytic activity under visible light irradiation.
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Affiliation(s)
- Ch Venkata Reddy
- School of Mechanical Engineering, Yeungnam University, Gyeongsan, 712-749, South Korea
| | - Aashna Nagar
- School of Chemistry and Biochemistry, Thapar Institute of Engineering & Technology, Patiala, 147004, India
| | - Nagaraj P Shetti
- Department of Chemistry, School of Advanced Sciences, KLE Technological University, Vidyanagar, Hubballi, 580 031, Karnataka, India
| | - I Neelakanta Reddy
- School of Mechanical Engineering, Yeungnam University, Gyeongsan, 712-749, South Korea
| | - Soumen Basu
- School of Chemistry and Biochemistry, Thapar Institute of Engineering & Technology, Patiala, 147004, India; Affiliate Faculty-TIET-Virginia Tech Center of Excellence in Emerging Materials, Thapar Institute of Engineering and Technology, Patiala, 147004, India
| | - Jaesool Shim
- School of Mechanical Engineering, Yeungnam University, Gyeongsan, 712-749, South Korea.
| | - Raghava Reddy Kakarla
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW 2006, Australia.
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Arumugam S, Bavani T, Selvaraj M, Al-Shehri BM, Preeyanghaa M, Jung S, Theerthagiri J, Neppolian B, Murugesan S, Madhavan J, Choi MY. Construction of direct FeMoO 4/g-C 3N 4-2D/2D Z-scheme heterojunction with enhanced photocatalytic treatment of textile wastewater to eliminate the toxic effect in marine environment. CHEMOSPHERE 2023; 313:137552. [PMID: 36526136 DOI: 10.1016/j.chemosphere.2022.137552] [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: 08/20/2022] [Revised: 11/29/2022] [Accepted: 12/11/2022] [Indexed: 06/17/2023]
Abstract
A novel FeMoO4/g-C3N4-2D/2D Z-scheme heterojunction photocatalyst was prepared via wet chemical method. The observed structural morphology of FeMoO4/g-C3N4 reveals the 2D-iron molybdate (FeMoO4) nanoplates compiled with the 2D-graphitic carbon nitride (g-C3N4) nanosheets like structure. The photocatalytic activity of the g-C3N4, FeMoO4, and FeMoO4/g-C3N4 composites were studied via the degradation of Rhodamine B (RhB) as targeted textile dye under visible light irradiation (VLI). The optimal FeMoO4/g-C3N4 (1:3 ratio of g-C3N4 and FeMoO4) composite show an enhanced degradation performance with rate constant value of 0.02226 min-1 and good stability even after three cycles. Thus, the h+ and O2•-are the key radicals in the degradation of RhB under VLI. It is proposed that the FeMoO4/g-C3N4 Z-scheme heterojunction effectively enhances the transfer and separation ability of e-/h+ pairs, by the way increasing the photocatalytic efficiency towards the RhB degradation. Thus, the newly constructed Z-scheme FeMoO4/g-C3N4 heterojunction photocatalyst is a promising material for the remediation of wastewater relevant to elimination of toxic effect in marine environment.
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Affiliation(s)
- Swaminathan Arumugam
- Solar Energy Lab, Department of Chemistry, Thiruvalluvar University, Vellore, 632 115, India
| | - Thirugnanam Bavani
- Solar Energy Lab, Department of Chemistry, Thiruvalluvar University, Vellore, 632 115, India
| | - Manickam Selvaraj
- Department of Chemistry, Faculty of Science, King Khalid University, Abha, 61413, Saudi Arabia; Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia
| | - Badria M Al-Shehri
- Department of Chemistry, Faculty of Science, King Khalid University, Abha, 61413, Saudi Arabia; Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia; Unit of Bee Research and Honey Production, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia
| | - Mani Preeyanghaa
- Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603203, India
| | - Sieon Jung
- Core-Facility Center for Photochemistry & Nanomaterials, Department of Chemistry (BK21 FOUR), Research Institute of Natural Sciences, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Jayaraman Theerthagiri
- Core-Facility Center for Photochemistry & Nanomaterials, Department of Chemistry (BK21 FOUR), Research Institute of Natural Sciences, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Bernaurdshaw Neppolian
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603203, India
| | | | - Jagannathan Madhavan
- Solar Energy Lab, Department of Chemistry, Thiruvalluvar University, Vellore, 632 115, India.
| | - Myong Yong Choi
- Core-Facility Center for Photochemistry & Nanomaterials, Department of Chemistry (BK21 FOUR), Research Institute of Natural Sciences, Gyeongsang National University, Jinju, 52828, Republic of Korea.
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Zhang X, Xie X, Li J, Han D, Ma Y, Fan Y, Han D, Niu L. Type II Heterojunction Formed between {010} or {012} Facets Dominated Bismuth Vanadium Oxide and Carbon Nitride to Enhance the Photocatalytic Degradation of Tetracycline. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:14770. [PMID: 36429488 PMCID: PMC9690978 DOI: 10.3390/ijerph192214770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 10/27/2022] [Accepted: 11/03/2022] [Indexed: 06/16/2023]
Abstract
Both type II and Z schemes can explain the charge transfer behavior of the heterojunction structure well, but the type of heterojunction structure formed between bismuth vanadium oxide and carbon nitride still has not been clarified. Herein, we rationally prepared bismuth vanadium oxide with {010} and {012} facets predominantly and carbon nitride as a decoration to construct a core-shell structure with bismuth vanadium oxide wrapped in carbon nitride to ensure the same photocatalytic reaction interface. Through energy band establishment and radical species investigation, both {010} and {012} facets dominated bismuth vanadium oxide/carbon nitride composites exhibit the type II heterojunction structures rather than the Z-scheme heterojunctions. Furthermore, to investigate the effect of type II heterojunction, the photocatalytic tetracycline degradations were performed, finding that {010} facets dominated bismuth vanadium oxide/carbon nitride composite demonstrated the higher degradation efficiency than that of {012} facets, due to the higher conduction band energy. Additionally, through the free radical trapping experiments and intermediate detection of degradation products, the superoxide radical was proven to be the main active radical to decompose the tetracycline molecules. Therein, the tetracycline molecules were degraded to water and carbon dioxide by dihydroxylation-demethylation-ring opening reactions. This work investigates the effect of crystal planes on heterojunction types through two different exposed crystal planes of bismuth vanadate oxide, which can provide some basic research and theoretical support for the progressive and controlled synthesis of photocatalysts with heterojunction structures.
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Affiliation(s)
- Xiaojing Zhang
- Center for Advanced Analytical Science, Guangzhou Key Laboratory of Sensing Materials & Devices, School of Chemistry and Chemical Engineering, Analytical and Testing Center, Guangzhou University, Guangzhou 510006, China
| | - Xianglun Xie
- Center for Advanced Analytical Science, Guangzhou Key Laboratory of Sensing Materials & Devices, School of Chemistry and Chemical Engineering, Analytical and Testing Center, Guangzhou University, Guangzhou 510006, China
| | - Jianan Li
- Center for Advanced Analytical Science, Guangzhou Key Laboratory of Sensing Materials & Devices, School of Chemistry and Chemical Engineering, Analytical and Testing Center, Guangzhou University, Guangzhou 510006, China
| | - Dongfang Han
- Center for Advanced Analytical Science, Guangzhou Key Laboratory of Sensing Materials & Devices, School of Chemistry and Chemical Engineering, Analytical and Testing Center, Guangzhou University, Guangzhou 510006, China
| | - Yingming Ma
- Center for Advanced Analytical Science, Guangzhou Key Laboratory of Sensing Materials & Devices, School of Chemistry and Chemical Engineering, Analytical and Testing Center, Guangzhou University, Guangzhou 510006, China
| | - Yingying Fan
- Center for Advanced Analytical Science, Guangzhou Key Laboratory of Sensing Materials & Devices, School of Chemistry and Chemical Engineering, Analytical and Testing Center, Guangzhou University, Guangzhou 510006, China
| | - Dongxue Han
- Center for Advanced Analytical Science, Guangzhou Key Laboratory of Sensing Materials & Devices, School of Chemistry and Chemical Engineering, Analytical and Testing Center, Guangzhou University, Guangzhou 510006, China
- Guangdong Provincial Key Laboratory of Psychoactive Substances Monitoring and Safety, Anti-Drug Technology Center of Guangdong Province, Guangzhou 510230, China
| | - Li Niu
- Center for Advanced Analytical Science, Guangzhou Key Laboratory of Sensing Materials & Devices, School of Chemistry and Chemical Engineering, Analytical and Testing Center, Guangzhou University, Guangzhou 510006, China
- Guangdong Provincial Key Laboratory of Psychoactive Substances Monitoring and Safety, Anti-Drug Technology Center of Guangdong Province, Guangzhou 510230, China
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6
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3D hierarchical structure collaborating with 2D/2D interface interaction in BiVO4/ZnCr-LDH heterojunction with superior visible-light photocatalytic removal efficiency for tetracycline hydrochloride. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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7
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Xu W, Fan N, Xu S, Meng L, Xu B, Zhou M, Tian W, Li L. Interfacial Bi-S bonds modulate band alignment for efficient solar water oxidation. NANOSCALE 2022; 14:14520-14528. [PMID: 36169575 DOI: 10.1039/d2nr04454d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Introducing suitable interfacial chemical bonds into heterojunctions can increase the charge carrier density, propel the charge separation, and facilitate interfacial charge extraction in photoanodes for photoelectrochemical (PEC) water oxidation. However, tuning chemical bonds at heterojunction interfaces and elucidating their influences on band alignment and the associated evolution of PEC performance remain elusive. Herein, Bi-S bonds were introduced into the interface of a CdIn2S4 (CIS)/Bi2WO6 (BWO) heterojunction. In situ irradiated X-ray photoelectron spectroscopy and electron spin resonance signals confirm that the Bi-S bond transforms the band alignment from type II to the direct Z-scheme, significantly enhancing the carrier separation efficiency. Theoretical calculations show that the Bi-S bond not only acts as an atomic-level charge transfer channel, but also changes the migration pathway and distance within the heterojunction. As a result, the optimized CIS/BWO photoanode exhibits a relatively high PEC performance of 4.25 mA cm-2 at 1.23 V vs. RHE (VRHE) and a low onset potential of 0.30 VRHE. This work presents a new avenue to construct comprehensively improved photoanodes by tuning the interfacial structures at the atomic level.
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Affiliation(s)
- Weiwei Xu
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials & Physics (CECMP), Soochow University, Suzhou 215006, P. R. China.
| | - Ningbo Fan
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials & Physics (CECMP), Soochow University, Suzhou 215006, P. R. China.
| | - Shiji Xu
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials & Physics (CECMP), Soochow University, Suzhou 215006, P. R. China.
| | - Linxing Meng
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials & Physics (CECMP), Soochow University, Suzhou 215006, P. R. China.
| | - Bin Xu
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials & Physics (CECMP), Soochow University, Suzhou 215006, P. R. China.
| | - Min Zhou
- College of Physical Science and Technology, Yangzhou University, Yangzhou 225002, P. R. China.
| | - Wei Tian
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials & Physics (CECMP), Soochow University, Suzhou 215006, P. R. China.
| | - Liang Li
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials & Physics (CECMP), Soochow University, Suzhou 215006, P. R. China.
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8
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Koutavarapu R, Jang WY, Rao MC, Arumugam M, Shim J. Novel BiVO 4-nanosheet-supported MoS 2-nanoflake-heterostructure with synergistic enhanced photocatalytic removal of tetracycline under visible light irradiation. CHEMOSPHERE 2022; 305:135465. [PMID: 35753425 DOI: 10.1016/j.chemosphere.2022.135465] [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: 04/27/2022] [Revised: 06/10/2022] [Accepted: 06/21/2022] [Indexed: 06/15/2023]
Abstract
This paper describes a simple in-situ hydrothermal technique for the production of BiVO4/MoS2 binary nanocomposites as visible-light-driven catalysts. The as-prepared samples were analyzed by structural, morphological, compositional, optical, surface area, and photocurrent analyses. The lattice fringe spaces at 0.304 nm and 0.612 nm were indexed to the (112) and (002) crystal planes of BiVO4 and MoS2, respectively. Antibacterial photocatalytic capabilities were assessed using tetracycline (TC). Consequently, it was observed that the BiVO4/MoS2 nanocomposite demonstrated improved antibacterial removal ability compared with the pristine samples. The BiVO4/MoS2 nanocomposite exhibited 97.46% removal of TC compared with the pure BiVO4 (43.76%) and MoS2 (35.28%) samples within 90 min. Thus, the photocatalytic performance was observed to follow the given order: BiVO4/MoS2 nanocomposite > BiVO4 > MoS2. The removal of TC after 90 min of irradiation was approximately 97.46%, 96.62%, 95.59%, and 94.45% after the 1st, 2nd, 3rd, and 4th cycles, respectively. Thus, the recycling tests revealed the stability of the photocatalyst, which exhibited a TC removal efficiency of 94.45% without distinct decay, even after the 4th cycle. According to the trapping results, hydroxyl radicals and holes were the key species and demonstrated a greater influence on the photocatalytic performance than superoxide radicals. The increased activity of the BiVO4/MoS2 nanocomposite may be attributed to its large surface area and tunable bandgap, which accelerate the charge-transport characteristics of the photocatalytic system. This insight and synergetic effects can provide a new approach for the development of novel heterostructure photocatalysts.
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Affiliation(s)
- Ravindranadh Koutavarapu
- Department of Robotics Engineering, College of Mechanical and IT Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Won Young Jang
- School of Mechanical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - M C Rao
- Department of Physics, Andhra Loyola College, Vijayawada, 520008, Andhra Pradesh, India.
| | - Malathi Arumugam
- Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand.
| | - Jaesool Shim
- School of Mechanical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
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9
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Wang X, Yao X, Bai H, Zhang Z. Oxygen vacancy-rich 2D GO/BiOCl composite materials for enhanced photocatalytic performance and semiconductor energy band theory research. ENVIRONMENTAL RESEARCH 2022; 212:113442. [PMID: 35588773 DOI: 10.1016/j.envres.2022.113442] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Revised: 04/20/2022] [Accepted: 05/04/2022] [Indexed: 06/15/2023]
Abstract
Bismuth-based materials are extensively studied for photocatalytic applications because of their unique crystal structure. Herein, we reported a binary graphene oxide (GO)/BiOCl composite material prepared by a hydrothermal method and analyzed its photodegradation mechanism through the semiconductor energy band theory. The degradation rate of the GO/BiOCl composite towards Rhodamine B could reach 93.6% within 8 min, and its performance exceeded that of most photocatalysts. The influencing factors for improving the photocatalytic activity are as follows: (1) abundant oxygen vacancies generated on the tight recombination interface; (2) a 2D-2D electron transfer channel between GO and BiOCl; and (3) GO acting as a load to provide more reaction sites for BiOCl nanosheets. This work provides a simple solution and theoretical explanation for the rapid degradation of pollutants, and has broad application prospects.
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Affiliation(s)
- Xuewen Wang
- School of Information Science and Technology, Northwest University, Xi'an City, 710127, China.
| | - Xiong Yao
- School of Information Science and Technology, Northwest University, Xi'an City, 710127, China
| | - Haiting Bai
- School of Information Science and Technology, Northwest University, Xi'an City, 710127, China
| | - Zhiyong Zhang
- School of Information Science and Technology, Northwest University, Xi'an City, 710127, China.
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Sivakumar R, Lee NY. Emerging bismuth-based direct Z-scheme photocatalyst for the degradation of organic dye and antibiotic residues. CHEMOSPHERE 2022; 297:134227. [PMID: 35259359 DOI: 10.1016/j.chemosphere.2022.134227] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 02/19/2022] [Accepted: 03/03/2022] [Indexed: 06/14/2023]
Abstract
Organic dye and antibiotic residues are some of the key substances that can contaminate the environment due to their wide usage in various industries and modern medicine. The degradation of these substances present in waterbodies is essential while contemplating human health. Photocatalysts (PSs) are promising materials that develop highly reactive species instantly by simple solar energy conversion for degrading the organic dye and antibiotic residues and converting them into nontoxic products. Among numerous semiconductors, the bismuth (Bi)-containing PS has received great attention due to its strong sunlight absorption, facile preparation, and high photostability. Owing to the technology advancement and demerits of the traditional methods, a Bi-containing direct Z-scheme PS has been developed for efficient photogenerated charge carrier separation and strong redox proficiency. In this review, a synthetic Bi-based Z-scheme heterojunction that mimics natural photosynthesis is described, and its design, fabrication methods, and applications are comprehensively reviewed. Specifically, the first section briefly explains the role of various semiconductors in the environmental applications and the importance of the Bi-based materials for constructing the Z-scheme photocatalytic systems. In the successive section, overview of Z-scheme PS are concisely discussed. The fourth and fifth sections extensively explain the degradation of the organic dyes and antibiotics utilizing the Bi-based direct Z-scheme heterojunction. Eventually, the conclusions and future perspectives of this emerging research field are addressed. Overall, this review is potentially useful for the researchers involved in the environmental remediation field as a collection of up-to-date research articles for the fabrication of the Bi-containing direct Z-scheme PS.
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Affiliation(s)
- Rajamanickam Sivakumar
- Department of Industrial Environmental Engineering, College of Industrial Environmental Engineering, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si, Gyeonggi-do, 13120, South Korea
| | - Nae Yoon Lee
- Department of BioNano Technology, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si, Gyeonggi-do, 13120, South Korea.
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11
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Huang C, Zhang L, Zhu Y, Zhang Z, Liu Y, Liu C, Ge S, Yu J. Dual-Engine Powered Paper Photoelectrochemical Platform Based on 3D DNA Nanomachine-Mediated CRISPR/Cas12a for Detection of Multiple miRNAs. Anal Chem 2022; 94:8075-8084. [PMID: 35608169 DOI: 10.1021/acs.analchem.2c01717] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
This work proposed a novel double-engine powered paper photoelectrochemical (PEC) biosensor based on an anode-cathode cooperative amplification strategy and various signal enhancement mechanisms, which realized the monitoring of multiple miRNAs (such as miRNA-141 and miRNA-21). Specifically, C3N4 quantum dots (QDs) sensitized ZnO nanostars and BiOI nanospheres simultaneously to construct a composite photoelectric layer that amplified the original photocurrent of the photoanode and photocathode, respectively. Through the independent design and partition of a flexible paper chip to functionalize injection holes and electrode areas, the bipolar combination completed the secondary upgrade of signals, which also provided biological reaction sites for multitarget detection. With the synergistic participation of a three-dimensional (3D) DNA nanomachine and programmable CRISPR/Cas12a shearing tool, C3N4 QDs lost their attachment away from the electrode surface to quench the signal. Moreover, electrode zoning significantly reduced the spatial cross talk of related substances for multitarget detection, while the universal trans-cleavage capability of CRISPR/Cas12a simplified the operation. The designed PEC biosensor revealed excellent linear ranges for detection of miRNA-141 and miRNA-21, for which the detection limits were 5.5 and 3.4 fM, respectively. With prominent selectivity and sensitivity, the platform established an effective approach for trace multitarget monitoring in clinical applications, and its numerous pioneering attempts owned favorable reference values.
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Affiliation(s)
- Chuan Huang
- Institute for Advanced Interdisciplinary Research, University of Jinan, Jinan 250022, P. R. China
| | - Lu Zhang
- Institute for Advanced Interdisciplinary Research, University of Jinan, Jinan 250022, P. R. China
| | - Yuanna Zhu
- School of Materials Science and Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Zuhao Zhang
- Institute for Advanced Interdisciplinary Research, University of Jinan, Jinan 250022, P. R. China
| | - Yunqing Liu
- Institute for Advanced Interdisciplinary Research, University of Jinan, Jinan 250022, P. R. China
| | - Chao Liu
- Department of Oral and Maxillofacial Surgery, Qilu Hospital of Shandong University; Institute of Stomatology, Shandong University, Jinan 250012, P. R. China
| | - Shenguang Ge
- Institute for Advanced Interdisciplinary Research, University of Jinan, Jinan 250022, P. R. China
| | - Jinghua Yu
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, P. R. China
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12
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Liu J, Feng C, Li Y, Zhang Y, Liang Q, Xu S, Li Z, Wang S. Photocatalytic detoxification of hazardous pymetrozine pesticide over two-dimensional covalent-organic frameworks coupling with Ag3PO4 nanospheres. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120644] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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13
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Chen Z, Li Y, Tian F, Chen X, Wu Z. Synthesis of BiVO4/g-C3N4 S-scheme heterojunction via a rapid and green microwave route for efficient removal of glyphosate. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120507] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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14
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Process optimization for decoration of Bi2Se3 nanoparticles on CdS nanowires: Twofold power conversion solar cell efficiency. J Taiwan Inst Chem Eng 2022. [DOI: 10.1016/j.jtice.2022.104251] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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15
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Feng C, Wang Y, Lu Z, Liang Q, Zhang Y, Li Z, Xu S. Nanoflower Ni5P4 coupled with GCNQDs as Schottky junction photocatalyst for the efficient degradation of norfloxacin. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120107] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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16
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Ni T, Cui X, Li Q, Yan Y, Wang F, Yang Z, Chang K, Liu G. N, S-CDs Decorated Mesoporous TiO2 Composite with Improved Photocatalytic Activity under Visible Light. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2021.11.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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17
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Peng X, Liu C, Zhao Z, Hu F, Dai H. Construction of a Z-scheme g-C3N4/NBGO/BiVO4 heterostructure with visible-light driven photocatalytic degradation of tetracycline: efficiency, reaction pathway and mechanism. Catal Sci Technol 2022. [DOI: 10.1039/d1cy01850g] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, an aminated graphene-like biochar (NGBO) was used as a solid-state electron mediator at a g-C3N4/BiVO4 interface to construct a hybrid Z-scheme system (g-C3N4/NBGO/BiVO4) for the photocatalytic degradation of tetracycline (TC) from aqueous solutions.
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Affiliation(s)
- Xiaoming Peng
- School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang 330013, Jiangxi Province, China
| | - Caihua Liu
- School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang 330013, Jiangxi Province, China
| | - Zilong Zhao
- School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, PR China
| | - Fengping Hu
- School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang 330013, Jiangxi Province, China
| | - Hongling Dai
- School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang 330013, Jiangxi Province, China
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18
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Chen W, Huang J, He ZC, Ji X, Zhang YF, Sun HL, Wang K, Su ZW. Accelerated photocatalytic degradation of tetracycline hydrochloride over CuAl2O4/g-C3N4 p-n heterojunctions under visible light irradiation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119461] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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19
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Li P, Guo J, Ji X, Xiong Y, Lai Q, Yao S, Zhu Y, Zhang Y, Xiao P. Construction of direct Z-scheme photocatalyst by the interfacial interaction of WO 3 and SiC to enhance the redox activity of electrons and holes. CHEMOSPHERE 2021; 282:130866. [PMID: 34089998 DOI: 10.1016/j.chemosphere.2021.130866] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 05/06/2021] [Accepted: 05/08/2021] [Indexed: 06/12/2023]
Abstract
The direct Z-scheme heterojunction structure benefits separation and migration of photoinduced carriers while maintaining original redox ability of each component. Nowadays, most Z-scheme structures are fabricated by g-C3N4 with other narrow band photocatalysts due to its low conduction band (CB). In this paper, SiC, another kind of photoelectric semiconductor with low CB, was employed to prepare direct Z-scheme photocatalyst with 2D WO3 by simple water oxidation precipitation method. The component and interface band structure of Z-scheme heterojunction WO3/SiC (WS) were verified by XPS, KPFM, Mott-Schottky method. The photodegradation efficiency and rate constant values of WS-1 for degrading RhB enhanced 2.5 and 5.3 times respectively compared with pristine WO3. Radical capture experiments and ESR tests affirmed that WS-1 photocatalyst produced •OH and •O2-active species, which further confirmed the photogenerated carriers were transmitted through the Z-scheme mode in principle. Band structure investigation showed that the direct Z-scheme structure assembled by WO3 with high valence band (VB) and SiC with low CB could maintain the high photocatalytic activity of active species. Therefore, this study offers a feasible method for construction of a novel and efficient direct Z-scheme photocatalyst.
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Affiliation(s)
- Ping Li
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, China
| | - Jiangna Guo
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, China
| | - Xing Ji
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, China
| | - Yuli Xiong
- College of Physics, Chongqing University, Chongqing, 401331, China
| | - Qingxin Lai
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, China
| | - Shuangrui Yao
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, China
| | - Yan Zhu
- College of Physics, Chongqing University, Chongqing, 401331, China
| | - Yunhuai Zhang
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, China.
| | - Peng Xiao
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 401331, China; College of Physics, Chongqing University, Chongqing, 401331, China.
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20
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Hu X, Guo R, Hong L, Ji X, Pan W. Recent Progress in Quantum Dots Modified g‐C
3
N
4
‐based Composite Photocatalysts. ChemistrySelect 2021. [DOI: 10.1002/slct.202102952] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Xing Hu
- College of Energy and Mechanical Engineering Shanghai University of Electric Power Shanghai China 200090
| | - Rui‐tang Guo
- College of Energy and Mechanical Engineering Shanghai University of Electric Power Shanghai China 200090
- Shanghai Engineering Research Center of Power Generation Environment Protection Shanghai China 200090
| | - Long‐fei Hong
- College of Energy and Mechanical Engineering Shanghai University of Electric Power Shanghai China 200090
| | - Xiang‐yin Ji
- College of Energy and Mechanical Engineering Shanghai University of Electric Power Shanghai China 200090
| | - Wei‐guo Pan
- College of Energy and Mechanical Engineering Shanghai University of Electric Power Shanghai China 200090
- Shanghai Engineering Research Center of Power Generation Environment Protection Shanghai China 200090
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21
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Li J, Ma Y, Xu Y, Li P, Guo J. Enhanced photocatalytic degradation activity of Z-scheme heterojunction BiVO 4 /Cu/g-C 3 N 4 under visible light irradiation. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2021; 93:2010-2024. [PMID: 33837607 DOI: 10.1002/wer.1572] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 02/17/2021] [Accepted: 03/13/2021] [Indexed: 06/12/2023]
Abstract
A novel BiVO4 /Cu/g-C3 N4 heterostructure photocatalyst was synthesized by thermal condensation, hydrothermal, and in situ precipitation method. The microscopic morphology and chemical composition of the synthesized samples were analyzed by XRD, SEM, FT-IR, XPS, and other characterizations. BiVO4 /Cu/g-C3 N4 (BiVO4 /Cu:g-C3 N4 mass ratio was 1:1) photocatalyst had the optimal photocatalytic degradation activity for tetracycline (TC) wastewater under visible light irradiation (120 min, 74.8%). The introduction of Cu and Z-scheme heterojunction was further confirmed by UV-vis, PL, EIS, and capture mechanism analysis, which effectively accelerated the separation and transfer rate of photogenerated electron holes and enhanced the strong oxidation of h+ and •O2 - active species. BiVO4 /Cu/g-C3 N4 heterojunction photocatalytic material has potential application value in the removal of refractory pollutants in wastewater. PRACTITIONER POINTS: A novel Z-scheme BiVO4 /Cu/g-C3 N4 photocatalyst with excellent photocatalytic activities and stability was prepared to treat tetracycline (TC) wastewater. 1:1 CBCN (BiVO4 /Cu:g-C3 N4 mass ratio was 1:1) photocatalyst exhibited the highest photocatalytic performance for TC wastewater. The Z-scheme heterojunction and Cu act as the interfacial charge transfer medium accelerated the transfer and separation of carriers.
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Affiliation(s)
- Jing Li
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, Chang'an University, Xi'an, China
- School of Water and Environment, Chang'an University, Xi'an, China
| | - Yuxuan Ma
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, Chang'an University, Xi'an, China
- School of Water and Environment, Chang'an University, Xi'an, China
| | - Yuan Xu
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, Chang'an University, Xi'an, China
- School of Water and Environment, Chang'an University, Xi'an, China
| | - Pengtao Li
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, Chang'an University, Xi'an, China
- School of Water and Environment, Chang'an University, Xi'an, China
| | - Jifeng Guo
- Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, Chang'an University, Xi'an, China
- School of Water and Environment, Chang'an University, Xi'an, China
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22
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Enhanced the Efficiency of Photocatalytic Degradation of Methylene Blue by Construction of Z-Scheme g-C3N4/BiVO4 Heterojunction. COATINGS 2021. [DOI: 10.3390/coatings11091027] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Both non-metallic g-C3N4 and BiVO4 are novel photocatalysts responsive to visible light, but their low charge separation efficiency restricts their inconspicuous photocatalytic activity. In this paper, direct Z-type g-C3N4/BiVO4 photocatalyst was constructed by calcination and hydrothermal for the degradation of methylene blue. The existence of g-C3N4/BiVO4 heterojunction was confirmed by the detailed study of its chemical structure and morphology by various characterization methods, such as X-ray diffraction (XRD), Scanning electron microscope (SEM), and X-ray photoelectron spectroscopy (XPS). The evaluation of photocatalytic performance showed that the MB degradation performance of 1.0-CN/BVO was significantly enhanced, which was 4.528 times and 2.387 times higher than pristine BiVO4 and g-C3N4, respectively, which was mainly due to the enhanced light capture ability and effective electron transfer in the photocatalytic reaction. The 1.0-CN/BVO composite exhibited extremely catalytic stability and recyclability.
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23
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Ding M, Chen X, Ma X, Liu Y, Wang X, Xu X. Constructing CuBi
2
O
4
/Ag
3
PO
4
Photocatalyst with Improved Photocatalytic Performance for the Degradation of Tetracycline under Visible‐Light Irradiation. ChemistrySelect 2021. [DOI: 10.1002/slct.202101714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Meng Ding
- School of Physics and Technology University of Jinan 336 Nanxinzhuang West Road Jinan 250022 People's Republic of China
| | - Xuehang Chen
- School of Physics and Technology University of Jinan 336 Nanxinzhuang West Road Jinan 250022 People's Republic of China
| | - Xiaoran Ma
- School of Physics and Technology University of Jinan 336 Nanxinzhuang West Road Jinan 250022 People's Republic of China
| | - Yutong Liu
- School of Physics and Technology University of Jinan 336 Nanxinzhuang West Road Jinan 250022 People's Republic of China
| | - Xiao Wang
- School of Physics and Technology University of Jinan 336 Nanxinzhuang West Road Jinan 250022 People's Republic of China
| | - Xijin Xu
- School of Physics and Technology University of Jinan 336 Nanxinzhuang West Road Jinan 250022 People's Republic of China
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24
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Mohamed RM, Ismail AA, Alhaddad M. A novel design of porous Cr2O3@ZnO nanocomposites as highly efficient photocatalyst toward degradation of antibiotics: A case study of ciprofloxacin. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118588] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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25
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Humayun M, Ullah H, Tahir AA, Bin Mohd Yusoff AR, Mat Teridi MA, Nazeeruddin MK, Luo W. An Overview of the Recent Progress in Polymeric Carbon Nitride Based Photocatalysis. CHEM REC 2021; 21:1811-1844. [PMID: 33887089 DOI: 10.1002/tcr.202100067] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 04/09/2021] [Accepted: 04/12/2021] [Indexed: 01/07/2023]
Abstract
Recently, polymeric carbon nitride (g-C3 N4 ) as a proficient photo-catalyst has been effectively employed in photocatalysis for energy conversion, storage, and pollutants degradation due to its low cost, robustness, and environmentally friendly nature. The critical review summarized the recent development, fundamentals, nanostructures design, advantages, and challenges of g-C3 N4 (CN), as potential future photoactive material. The review also discusses the latest information on the improvement of CN-based heterojunctions including Type-II, Z-scheme, metal/CN Schottky junctions, noble metal@CN, graphene@CN, carbon nanotubes (CNTs)@CN, metal-organic frameworks (MOFs)/CN, layered double hydroxides (LDH)/CN heterojunctions and CN-based heterostructures for H2 production from H2 O, CO2 conversion and pollutants degradation in detail. The optical absorption, electronic behavior, charge separation and transfer, and bandgap alignment of CN-based heterojunctions are discussed elaborately. The correlations between CN-based heterostructures and photocatalytic activities are described excessively. Besides, the prospects of CN-based heterostructures for energy production, storage, and pollutants degradation are discussed.
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Affiliation(s)
- Muhammad Humayun
- Engineering Research Center for Functional Ceramics of the Ministry of Education, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, PR, China.,Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, PR, China
| | - Habib Ullah
- Environment and Sustainability Institute, University of Exeter, Penryn, TR10 9FE, Cornwall, United Kingdom
| | - Asif Ali Tahir
- Environment and Sustainability Institute, University of Exeter, Penryn, TR10 9FE, Cornwall, United Kingdom
| | - Abd Rashid Bin Mohd Yusoff
- Department of Physics, Swansea University, Vivian Tower, Singleton Park, SA2 8PP, Swansea, United Kingdom
| | - Mohd Asri Mat Teridi
- Solar Energy Research Institute (SERI), Universiti Kebangsaan Malaysia, 43600, UKM Bangi, Selangor, Malaysia
| | - Mohammad Khaja Nazeeruddin
- Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Rue de l'Industrie 17, CH-1951, Sion, Switzerland
| | - Wei Luo
- Engineering Research Center for Functional Ceramics of the Ministry of Education, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, PR, China.,Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, PR, China
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26
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Ge J, Guo J, Yu X, Li Y, Ma Z. Structural Tunability on Naphthalimide-Based Dendrimer Gelators via Glaser Coupling Interaction with Tailored Gelation Solvent Polarity and Stimuli-Responsive Properties. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:2677-2682. [PMID: 33599502 DOI: 10.1021/acs.langmuir.0c03316] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
To date, most of the low-molecular-weight gels are found serendipitously, and modification on known gelator structures via organic synthesis is an efficient methodology to prepare gel series. However, a simple, direct, and rational modification method for a known gelator is still a challenge. Herein, we employ Glaser coupling reaction to synthesize a novel dendrimer gelator BisDEC with the (ALS2)2 structure, starting from terminal alkyne-based gelator DEC with the ALS2 structure. This structural change results in gels with distinct gelation solvents, mechanical properties, and stimuli-responsive abilities. The gelation abilities of DEC and BisDEC in nonpolar and polar solvents, respectively, have been examined and discussed by several experiments and Hansen constants. It is also shown that the BisDEC gel system shows intriguing self-healing, self-supporting, and grinding chromism properties.
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Affiliation(s)
- Junqi Ge
- College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050024, China
- College of Science and Hebei Research Center of Pharmaceutical and Chemical Engineering, Hebei University of Science and Technology, Shijiazhuang 050080, China
| | - Jiangbo Guo
- College of Science and Hebei Research Center of Pharmaceutical and Chemical Engineering, Hebei University of Science and Technology, Shijiazhuang 050080, China
| | - Xudong Yu
- College of Science and Hebei Research Center of Pharmaceutical and Chemical Engineering, Hebei University of Science and Technology, Shijiazhuang 050080, China
| | - Yajuan Li
- College of Science and Hebei Research Center of Pharmaceutical and Chemical Engineering, Hebei University of Science and Technology, Shijiazhuang 050080, China
| | - Zichuan Ma
- College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050024, China
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27
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High-impressive separation of photoinduced charge carriers on step-scheme ZnO/ZnSnO3/Carbon dots heterojunction with efficient activity in photocatalytic NH3 production. J Taiwan Inst Chem Eng 2021. [DOI: 10.1016/j.jtice.2021.01.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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28
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Li C, Che H, Huo P, Yan Y, Liu C, Dong H. Confinement of ultrasmall CoFe2O4 nanoparticles in hierarchical ZnIn2S4 microspheres with enhanced interfacial charge separation for photocatalytic H2 evolution. J Colloid Interface Sci 2021; 581:764-773. [DOI: 10.1016/j.jcis.2020.08.019] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 07/28/2020] [Accepted: 08/04/2020] [Indexed: 11/15/2022]
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29
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Kanmaz N, Acar M, Yılmazoğlu M, Hızal J. Rhodamine B and murexide retention onto sulfonated poly (ether ether ketone) (sPEEK). Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125341] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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30
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Qi H, Shi C, Jiang X, Teng M, Sun Z, Huang Z, Pan D, Liu S, Guo Z. Constructing CeO 2/nitrogen-doped carbon quantum dot/g-C 3N 4 heterojunction photocatalysts for highly efficient visible light photocatalysis. NANOSCALE 2020; 12:19112-19120. [PMID: 32926033 DOI: 10.1039/d0nr02965c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Ternary CeO2/nitrogen-doped carbon quantum dot (NCQD)/graphitic carbon nitride (g-C3N4) heterojunction nanocomposites were prepared by a high-temperature calcination and hydrothermal method and tested for degrading tetracycline (TC) and generating H2. Compared with CeO2 and g-C3N4, the Z-scheme CeO2/NCQDs/g-C3N4 (CSNx, where x represents the amount of CeO2 in wt%) nanoparticles showed a higher TC photodegradation capacity and H2 evolution ability owing to enhanced efficient charge separation and photocatalytic stability. CSN5 showed the best photodegradation activity for TC degradation (100 mL, 20 mg L-1; 100% degradation in 60 min; λ≥ 420 nm) and the highest H2 evolution rate of 1275.42 μmol h-1 g-1 was approximately 3.73- and 32.25-times higher than those of pristine g-C3N4 (341.85 μmol h-1 g-1) and pure CeO2 (39.55 μmol h-1 g-1), respectively. Superoxide (˙O2-) and hydroxyl (˙OH) radicals were also confirmed to be formed on the sample surface for TC photocatalytic degradation. As an electronic medium, NCQDs transferred electrons between the g-C3N4 and CeO2 interface to promote the electron-hole separation. This work affords a helpful perspective for synthesizing efficient charge separation and environmentally friendly photocatalysts by controlling the surface heterostructure.
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Affiliation(s)
- Houjuan Qi
- Key Laboratory of Bio-based Material Science & Technology (Northeast Forestry University), College of Material Science and Engineering, Ministry of Education, Harbin 150040, China.
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31
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All-solid-state Z-scheme BiOX(Cl, Br)-Au-CdS heterostructure: Photocatalytic activity and degradation pathway. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124778] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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32
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Nguyen VH, Mousavi M, Ghasemi JB, Delbari SA, Le QV, Shahedi Asl M, Shokouhimehr M, Mohammadi M, Azizian-Kalandaragh Y, Sabahi Namini A. Synthesis, characterization, and photocatalytic performance of Ag/AgFeO2 decorated on g-C3N4-nanosheet under the visible light irradiation. J Taiwan Inst Chem Eng 2020. [DOI: 10.1016/j.jtice.2020.10.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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33
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Pham XN, Nguyen HT, Pham TN, Nguyen TTB, Nguyen MB, Tran VTT, Doan HV. Green synthesis of H-ZSM-5 zeolite-anchored O-doped g–C3N4 for photodegradation of Reactive Red 195 (RR 195) under solar light. J Taiwan Inst Chem Eng 2020. [DOI: 10.1016/j.jtice.2020.09.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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BiOBr and BiOCl decorated on TiO2 QDs: Impressively increased photocatalytic performance for the degradation of pollutants under visible light. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2020.07.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Liu L, Jiang W, Song X, Duan Q, Zhu E. A novel Strategy of Lock-in Effect between Conjugated Polymer and TiO 2 towards Dramatic Enhancement of Photocatalytic Activity under Visible Light. Sci Rep 2020; 10:6513. [PMID: 32300247 PMCID: PMC7162871 DOI: 10.1038/s41598-020-63623-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 03/19/2020] [Indexed: 11/08/2022] Open
Abstract
To design novel conjugated polymers and improve interfacial interaction with semiconductor is one of directions to develop high-efficient photocatalysts with harvesting photons and boosting catalytic activities. Herein, two novel linear conjugated polymers poly[(thiophene-ethylene-thiophene)-thiophene] (PTET-T) and poly[(thiophene-ethylene-thiophene)-thiophene-3-carboxylic acid] (PTET-T-COOH) were successfully synthesized by a simple Stille coupling reaction. Their heterojunction with TiO2, i.e, PTET-T/TiO2 (C1) and PTET-T-COOH/TiO2 (C2), exhibited outstanding photocatalytic activity for degrading Rhodamine B, methylene blue and tetracycline. The energetic "lock-in effect" between PTET-T-COOH and TiO2 through carboxyl groups and hydroxyl groups interaction has been proved to greatly improve the interface charge transfer ability and suppress the electron-hole recombination in PTET-T-COOH/TiO2. Thus, by regulating the dosage of polymers, the 15% PTET-T-COOH/TiO2 showed the optimized photocatalytic activity with excellent chemical stability, and its kinetic rate constant was determined to be 41.7 times of that of TiO2. This work provided a new effective strategy of designed and explored organic semiconductor-inorganic heterojunction photocatalysts with broaden absorption, repeatability and high-charge mobility.
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Affiliation(s)
- Linlin Liu
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, P. R. China
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun, 130103, P. R. China
- Key Laboratory of Preparation and Application of Environmental Friendly Materials, Jilin Normal University, Ministry of Education, Changchun, 130103, P. R. China
| | - Wei Jiang
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun, 130103, P. R. China
- Key Laboratory of Preparation and Application of Environmental Friendly Materials, Jilin Normal University, Ministry of Education, Changchun, 130103, P. R. China
| | - Xingyue Song
- School of Environmental Science and Engineering, Jilin Normal University, Siping, 136000, P. R. China
| | - Qian Duan
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, P. R. China.
| | - Enwei Zhu
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun, 130103, P. R. China.
- Key Laboratory of Preparation and Application of Environmental Friendly Materials, Jilin Normal University, Ministry of Education, Changchun, 130103, P. R. China.
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Wu Z, Xue Y, He X, Li Y, Yang X, Wu Z, Cravotto G. Surfactants-assisted preparation of BiVO 4 with novel morphologies via microwave method and CdS decoration for enhanced photocatalytic properties. JOURNAL OF HAZARDOUS MATERIALS 2020; 387:122019. [PMID: 31927261 DOI: 10.1016/j.jhazmat.2020.122019] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Revised: 12/31/2019] [Accepted: 01/02/2020] [Indexed: 06/10/2023]
Abstract
The development of a highly efficient and rapid method for the accurate preparation of photocatalysts with novel morphologies is a hot research topic. The different morphologies of BiVO4 was prepared using surfactants-assisted microwave method, and demonstrated irregular (no surfactant), octahedral (sodium dodecyl benzene sulfonate), olive-like (polyvinylpyrrolidone) and hollow structures (ethylenediaminetetraacetic acid), respectively. The BiVO4-CdS were synthesized using the chemical-bath-deposition method with different morphologies of BiVO4 as the substrates. The hollow structure of BiVO4 displayed the highest photocatalytic performance. Moreover, the photodegradation rates of the hollow structure BiVO4-CdS on tetracycline hydrochloride and ciprofloxacin were about 1.8 and 1.5 times higher than the corresponding BiVO4, indicating that the Z-scheme heterojunction can improve the photogenerated electron pairs separation efficiency. Furthermore, the regulation mechanism of morphology and energy-band position, as produced using the surfactants, has also been thoroughly investigated in this work, which provides a novel insight into the efficient and rapid preparation of photocatalysts with special morphology and high performance.
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Affiliation(s)
- Zhansheng Wu
- School of Environmental and Chemical Engineering, Xi'an Polytechnic University, Xi'an, 710048, PR China; School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi, 832003, PR China.
| | - Yongtao Xue
- School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi, 832003, PR China
| | - Xiufang He
- School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi, 832003, PR China
| | - Yunfeng Li
- School of Environmental and Chemical Engineering, Xi'an Polytechnic University, Xi'an, 710048, PR China
| | - Xia Yang
- School of Environmental and Chemical Engineering, Xi'an Polytechnic University, Xi'an, 710048, PR China
| | - Zhilin Wu
- Department of Drug Science and Technology, University of Turin, Turin, 10125, Italy
| | - Giancarlo Cravotto
- Department of Drug Science and Technology, University of Turin, Turin, 10125, Italy; Institute of Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, Moscow, 109807, Russia
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Gao B, Wang J, Dou M, Xu C, Huang X. Enhanced photocatalytic removal of amoxicillin with Ag/TiO 2/mesoporous g-C 3N 4 under visible light: property and mechanistic studies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:7025-7039. [PMID: 31883070 DOI: 10.1007/s11356-019-07112-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 11/19/2019] [Indexed: 06/10/2023]
Abstract
In present study, an efficient ternary Ag/TiO2/mesoporous g-C3N4 (M-g-C3N4) photocatalyst was successfully synthesized through depositing Ag nanoparticles (NPs) on the surface of TiO2/M-g-C3N4 heterojunction. Ag/TiO2/M-g-C3N4 nanocomposite displayed the highest degradation efficiency for amoxicillin (AMX) compared to TiO2/M-g-C3N4 heterojunction, M-g-C3N4, and bulk-g-C3N4 (B-g-C3N4). The removal efficiency of AMX in real situation, surface water (SW), hospital wastewater (HW), and waste water treatment plant (WWTP) also were studied to illustrate the effectiveness of Ag/TiO2/M-g-C3N4 photocatalysts. The vulnerable atoms in AMX structure were revealed through DFT calculation. Additionally, the dominating active groups produced in time of the photocatalytic procedure were determined on account of free radical trapping experiments and ESR spectra. The mechanism of photocatalytic degradation was proposed and verified. The transfer of the electrons and the inhibition of the recombination of photogenerated electron-holes were enhanced effectively under the synergistic effect of the Ag NPs and TiO2. As a consequence, the catalytic activity of the composite was improved under visible light.
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Affiliation(s)
- Boru Gao
- Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Haidian District, Beijing, 100044, China
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Beijing, 100044, China
| | - Jin Wang
- Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Haidian District, Beijing, 100044, China.
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Beijing, 100044, China.
| | - Mengmeng Dou
- Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Haidian District, Beijing, 100044, China
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Beijing, 100044, China
| | - Ce Xu
- Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Haidian District, Beijing, 100044, China
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Beijing, 100044, China
| | - Xue Huang
- Department of Municipal and Environmental Engineering, Beijing Jiaotong University, Haidian District, Beijing, 100044, China
- Beijing Key Laboratory of Aqueous Typical Pollutants Control and Water Quality Safeguard, Beijing, 100044, China
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Li S, Bychkov KL, Butenko DS, Terebilenko KV, Zhu Y, Han W, Baumer VN, Slobodyanik MS, Ji H, Klyui NI. Scheelite-related MBi 1-xV 1-xMo xO 4 (M II- Ca, Sr) solid solution-based photoanodes for enhanced photoelectrochemical water oxidation. Dalton Trans 2020; 49:2345-2355. [PMID: 32022074 DOI: 10.1039/c9dt04417e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The photoelectrochemical properties of scheelite-related MBi1-xV1-xMoxO4 (MII = Ca, Sr, x = 0.1 to 0.9) solid solutions deposited on conductive glass (coated with SnO2, F-doped) have been investigated as photoanodes in photoelectrochemical (PEC) water splitting. The variation of the final annealing temperature during the preparation of the conduction electrodes as well as the value of substitution x have been shown to affect the PEC performance. The micropowders of MBi1-xV1-xMoxO4 (MII = Ca, Sr, x = 0.1 to 0.9) samples were first fabricated vi a solid-state method; they were characterised by SEM microscopy and powder and single crystal X-ray diffraction, and the band gap values were estimated using diffusive reflectance data. The value of substitution x = 0.1 in the cases of samples containing calcium and strontium affords the highest PEC performance reported for the whole range of substitution. These results demonstrate a promising approach for the beneficial utilization of BiVO4-substituted scheelite-related solid solutions in photo-electrochemical cells towards efficient and inexpensive photoanodes.
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Affiliation(s)
- Shilin Li
- Sino-Russian International Joint Laboratory for Clean Energy and Energy Conversion Technology, College of Physics, Jilin University, Changchun 130012, P. R. China
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Ag as Cocatalyst and Electron-Hole Medium in CeO 2 QDs/Ag/Ag 2Se Z-scheme Heterojunction Enhanced the Photo-Electrocatalytic Properties of the Photoelectrode. NANOMATERIALS 2020; 10:nano10020253. [PMID: 32023932 PMCID: PMC7075152 DOI: 10.3390/nano10020253] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 01/25/2020] [Accepted: 01/27/2020] [Indexed: 01/20/2023]
Abstract
A recyclable photoelectrode with high degradation capability for organic pollutants is crucial for environmental protection and, in this work, a novel CeO2 quantum dot (QDs)/Ag2Se Z-scheme photoelectrode boasting increased visible light absorption and fast separation and transfer of photo-induced carriers is prepared and demonstrated. A higher voltage increases the photocurrent and 95.8% of tetracycline (TC) is degraded by 10% CeO2 QDs/Ag2Se in 75 minutes. The degradation rate is superior to that achieved by photocatalysis (92.3% of TC in 90 min) or electrocatalysis (27.7% of TC in 90 min). Oxygen vacancies on the CeO2 QDs advance the separation and transfer of photogenerated carriers at the interfacial region. Free radical capture tests demonstrate that •O2−, •OH, and h+ are the principal active substances and, by also considering the bandgaps of CeO2 QDs and Ag2Se, the photocatalytic mechanism of CeO2 QDs/Ag2Se abides by the Z-scheme rather than the traditional heterojunction scheme. A small amount of metallic Ag formed in the photocatalysis process can form a high-speed charge transfer nano channel, which can greatly inhibit the photogenerated carrier recombination, improve the photocatalytic performance, and help form a steady Z-scheme photocatalysis system. This study would lay a foundation for the design of a Z-scheme solar photocatalytic system.
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Liu L, Song X, Kong X, Duan Q, Zhu E. Fabrication of metal-free PTET-T-COOH/g-C3N4 heterostructure for enhancing photocatalytic activity. RSC Adv 2020; 10:9116-9125. [PMID: 35496553 PMCID: PMC9050118 DOI: 10.1039/d0ra00960a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Accepted: 02/24/2020] [Indexed: 11/21/2022] Open
Abstract
In this research work, we successfully fabricated a range of PTET-T-COOH/g-C3N4 heterostructures via a simple method. The as-prepared PTET-T-COOH/g-C3N4 heterostructures show enhanced photocatalytic degradation activity as compared to pure g-C3N4. For the photocatalytic degradation of RhB, the optimal PTET-T-COOH/g-C3N4-1% heterostructure is nearly 3.83 times that of the pure g-C3N4. The enhancement of photocatalytic performance is ascribed to three aspects: one is the strong interaction between PTET-T-COOH and g-C3N4; the second is the larger surface area of the PTET-T-COOH/g-C3N4 heterostructure compared to that of pure g-C3N4; the third is the effectively improved transferability of photogenerated carriers. In addition, the whole photocatalytic reaction mechanism over the PTET-T-COOH/g-C3N4 heterostructure is provided. This work may offer a hopeful method to synthesize any other heterostructure with high stability and superior photocatalytic activity. The metal-free PTET-T-COOH/g-C3N4 heterostructure exhibits a high degradation rate for RhB under visible light irradiation.![]()
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Affiliation(s)
- Linlin Liu
- School of Materials Science and Engineering
- Changchun University of Science and Technology
- Changchun 130022
- P. R. China
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education
| | - Xingyue Song
- School of Environmental Science and Engineering
- Jilin Normal University
- Siping 136000
- P. R. China
| | - Xiangxin Kong
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education
- Jilin Normal University
- Changchun 130103
- P. R. China
- Key Laboratory of Preparation and Application of Environmental Friendly Materials
| | - Qian Duan
- School of Materials Science and Engineering
- Changchun University of Science and Technology
- Changchun 130022
- P. R. China
| | - Enwei Zhu
- Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education
- Jilin Normal University
- Changchun 130103
- P. R. China
- Key Laboratory of Preparation and Application of Environmental Friendly Materials
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Fabrication of novel g-C3N4 nanosheet/carbon dots/Ag6Si2O7 nanocomposites with high stability and enhanced visible-light photocatalytic activity. J Taiwan Inst Chem Eng 2019. [DOI: 10.1016/j.jtice.2019.07.018] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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43
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Jiang R, Lu G, Yan Z, Wu D, Liu J, Zhang X. Enhanced photocatalytic activity of a hydrogen bond-assisted 2D/2D Z-scheme SnNb2O6/Bi2WO6 system: Highly efficient separation of photoinduced carriers. J Colloid Interface Sci 2019; 552:678-688. [DOI: 10.1016/j.jcis.2019.05.104] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 05/26/2019] [Accepted: 05/31/2019] [Indexed: 12/26/2022]
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Hierarchical fabrication Z-scheme photocatalyst of BiVO4 (0 4 0)-Ag@CdS for enhanced photocatalytic properties under simulated sunlight irradiation. J Colloid Interface Sci 2019; 548:293-302. [DOI: 10.1016/j.jcis.2019.04.043] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 04/12/2019] [Accepted: 04/14/2019] [Indexed: 10/27/2022]
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Dinesh GK, Chakma S. Degradation kinetic study of cholesterol lowering statin drug using sono-hybrid techniques initiated by metal-free polymeric catalyst. J Taiwan Inst Chem Eng 2019. [DOI: 10.1016/j.jtice.2019.04.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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46
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Precursor-reforming strategy induced g-C3N4 microtubes with spatial anisotropic charge separation established by conquering hydrogen bond for enhanced photocatalytic H2-production performance. J Colloid Interface Sci 2019; 547:224-233. [DOI: 10.1016/j.jcis.2019.03.106] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 03/29/2019] [Accepted: 03/30/2019] [Indexed: 11/20/2022]
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47
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Che H, Che G, Zhou P, Liu C, Dong H. Yeast-derived carbon sphere as a bridge of charge carriers towards to enhanced photocatalytic activity of 2D/2D Cu2WS4/g-C3N4 heterojunction. J Colloid Interface Sci 2019; 546:262-275. [DOI: 10.1016/j.jcis.2019.03.080] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 03/19/2019] [Accepted: 03/24/2019] [Indexed: 12/24/2022]
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48
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Li Z, Che G, Jiang W, Liu L, Wang H. Visible-light-driven CQDs@MIL-125(Ti) nanocomposite photocatalyst with enhanced photocatalytic activity for the degradation of tetracycline. RSC Adv 2019; 9:33238-33245. [PMID: 35529147 PMCID: PMC9073379 DOI: 10.1039/c9ra05600a] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Accepted: 09/26/2019] [Indexed: 11/21/2022] Open
Abstract
In the present study, a novel photocatalyst, CQDs@MIL-125(Ti) (CQDs = carbon quantum dots), was prepared via a solvothermal procedure. The photocatalytic properties were tested by the degradation of tetracycline (TC) with a 250 W Xe lamp (λ > 420 nm). Compared with pure MIL-125(Ti), the 10 wt% CQDs@MIL-125(Ti) photocatalyst can significantly improve the degradation process of TC, and the degradation efficiency can reach 90% within 4 h. The enhancement in the photocatalytic performance is due to the CQDs, which can promote the absorption of visible light and also efficiently accelerate the separation of photogenerated electron–hole pairs. We have also demonstrated that superoxide radicals (·O2−) and holes (h+) play crucial roles in the photocatalytic degradation of TC through capture experiments. The current work provides a new idea for constructing high-efficiency photocatalysts based on MIL-125(Ti). A novel CQDs@MIL-125(Ti) photocatalyst had been synthesized by a facile solvothermal process for the degradation of TC. The possible degradation mechanism was proposed based on the active species trapping experiments.![]()
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Affiliation(s)
- Zhi Li
- Key Laboratory of Preparation and Application of Environmental Friendly Materials (Jilin Normal University)
- Ministry of Education
- Changchun 130103
- People's Republic of China
| | - Guangbo Che
- Key Laboratory of Preparation and Application of Environmental Friendly Materials (Jilin Normal University)
- Ministry of Education
- Changchun 130103
- People's Republic of China
| | - Wei Jiang
- Key Laboratory of Preparation and Application of Environmental Friendly Materials (Jilin Normal University)
- Ministry of Education
- Changchun 130103
- People's Republic of China
| | - Lihui Liu
- Key Laboratory of Preparation and Application of Environmental Friendly Materials (Jilin Normal University)
- Ministry of Education
- Changchun 130103
- People's Republic of China
| | - Hairui Wang
- Key Laboratory of Preparation and Application of Environmental Friendly Materials (Jilin Normal University)
- Ministry of Education
- Changchun 130103
- People's Republic of China
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