1
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Zhai M, Zhang Y, Xu J, Lin H, Xing J, Wang L. Correlation between existential form of ruthenium cocatalyst and photocatalytic hydrogen evolution of carbon nitride. J Colloid Interface Sci 2024; 673:267-274. [PMID: 38875792 DOI: 10.1016/j.jcis.2024.06.092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 05/25/2024] [Accepted: 06/10/2024] [Indexed: 06/16/2024]
Abstract
Catalysts composed of nanocluster and single-atom (SA) were extensively used to enhance electrocatalytic water splitting performance, whereas study of their photocatalytic hydrogen (H2) evolution activity was limited. Herein, carbon nitride (CN) decorated by ruthenium (Ru) cocatalysts existed as SA + cluster, cluster + nanoparticles (NPs), and NPs were prepared by impregnation and calcination processes. The correlation between existential form, content of Ru cocatalyst and H2 evolution rate were carefully discussed. It was found that Ru NPs were favor for water molecule adsorption, whereas Ru SAs and clusters facilitated H2 desorption. Theoretical calculations revealed that Ru clusters + NPs cocatalyst were beneficial for H* intermediate formation. Water splitting tests found that 1.07 wt% Ru NPs + cluster modified CN showed the highest H2 evolution rate of 13.64 mmol h-1 g-1, which was 266.4 and 1.5 times higher than those of CN and Ru NPs (2.33 wt%) decorated CN, respectively. This work deeply reveals the influences of existential form of Ru cocatalysts on photocatalytic water splitting of CN, and provides thought in designing new cocatalysts to largely enhance H2 evolution.
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Affiliation(s)
- Mianmian Zhai
- Key Laboratory of Eco-chemical Engineering, Taishan Scholar Advantage and Characteristic Discipline Team of Eco-Chemical Process and Technology, Qingdao University of Science and Technology, Qingdao 266042, China; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Yu Zhang
- Key Laboratory of Eco-chemical Engineering, Taishan Scholar Advantage and Characteristic Discipline Team of Eco-Chemical Process and Technology, Qingdao University of Science and Technology, Qingdao 266042, China; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Jixiang Xu
- Key Laboratory of Eco-chemical Engineering, Taishan Scholar Advantage and Characteristic Discipline Team of Eco-Chemical Process and Technology, Qingdao University of Science and Technology, Qingdao 266042, China; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
| | - Haifeng Lin
- Key Laboratory of Eco-chemical Engineering, Taishan Scholar Advantage and Characteristic Discipline Team of Eco-Chemical Process and Technology, Qingdao University of Science and Technology, Qingdao 266042, China; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Jun Xing
- Key Laboratory of Eco-chemical Engineering, Taishan Scholar Advantage and Characteristic Discipline Team of Eco-Chemical Process and Technology, Qingdao University of Science and Technology, Qingdao 266042, China; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Lei Wang
- Key Laboratory of Eco-chemical Engineering, Taishan Scholar Advantage and Characteristic Discipline Team of Eco-Chemical Process and Technology, Qingdao University of Science and Technology, Qingdao 266042, China; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
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2
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Jiang H, Xu J, Sun L, Li J, Wang L, Wang W, Liu Q, Yang J. Electron Tandem Transport Channel in a Cu 3P/Sv-ZnIn 2S 4 p-n Heterojunction for Photothermal-Photocatalytic Benzyl Alcohol Oxidation and H 2 Production. Inorg Chem 2024; 63:14746-14754. [PMID: 39046942 DOI: 10.1021/acs.inorgchem.4c02428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
The development of photocatalytic systems with an electron tandem transport channel represents a promising avenue for improving the utilization of photogenerated electrons and holes despite encountering significant challenges. In this study, ZnIn2S4 (Sv-ZIS) with sulfur vacancies was fabricated using a solvothermal technique to create defect energy levels. Subsequently, Cu3P nanoparticles were coupled onto the surface of Sv-ZIS, forming a Cu3P/Sv-ZIS p-n heterojunction with an electron tandem transport channel. Experimental findings demonstrated that this tandem transport channel enhanced the carrier lifetime and separation efficiency. In addition, mechanistic investigations unveiled the formation of a robust built-in electric field (BEF) at the interface between Cu3P and Sv-ZIS, providing a driving force for electron migration. The combined consequences of the transport channel, the strong BEF, and photothermal effect led to a surface carrier separation efficiency of 65.85%. Consequently, Cu3P/Sv-ZIS achieved simultaneous H2 yield and benzaldehyde production rates of 18,101.4 and 15,012.6 μmol·g-1·h-1, which were 2.31 and 2.62 times higher than those of ZnIn2S4, respectively. This work exemplifies the design of the p-n heterojunction for the efficient utilization of photogenerated electrons and holes.
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Affiliation(s)
- Haopeng Jiang
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
| | - Jinghang Xu
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
| | - Lijuan Sun
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
| | - Jinhe Li
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
| | - Lele Wang
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
| | - Weikang Wang
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
| | - Qinqin Liu
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
| | - Juan Yang
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
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3
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Cheng W, Ren X, Wang X, Huang Z, Wei Y, Wang L, Xu J. Improving the Photoactivity of Porphyrin-Based Metal-Organic Frameworks via Constructing [Ce-O] Active Site and Vacancy. Inorg Chem 2024; 63:14050-14061. [PMID: 39015016 DOI: 10.1021/acs.inorgchem.4c01836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2024]
Abstract
Defect engineering of metal-organic frameworks (MOFs) is a versatile approach to tailoring their electronic structures and photocatalytic performance. Herein, Ce-based porphyrin MOFs (CMFs) featuring controlled structural defects were successfully prepared using a simple acid modulation strategy to drive the photocatalytic H2 generation. The [Ce-O] unit serves as the active site via a ligand-to-metal charge transfer process, which has been confirmed by in situ XPS analysis. Abundant exposed coordinatively unsaturated Ce-O centers are beneficial for the adsorption and activation of water molecules, which is an important factor for improving the photocatalytic performance of the synthesized defective MOFs. In addition, optical and electrochemical experiments indicate that CMFs with more oxygen vacancies possess higher charge separation efficiency. As a result, the optimized CMF(Zn)-200 sample afforded high stability and activity in the H2 generation (up to 1603.3 μmol·g-1·h-1 under cocatalyst-free conditions) and tetracycline hydrochloride removal efficiency (97%), which was 8.45 and 97 times higher than that of pure meso-tetra(4-carboxyphenyl)porphine. This study demonstrates that effective structural modulation and defect introduction can improve the activity and stability of PMOF-based photocatalysts.
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Affiliation(s)
- Wenyao Cheng
- School of Physics and Electronic Engineering, Jiangsu University, Zhenjiang ,Jiangsu 212013, P. R. China
| | - Xinlei Ren
- School of Materials Science & Engineering, Jiangsu University, Zhenjiang ,Jiangsu 212013, P. R. China
| | - Xinyu Wang
- School of Materials Science & Engineering, Jiangsu University, Zhenjiang ,Jiangsu 212013, P. R. China
| | - Zefei Huang
- School of Materials Science & Engineering, Jiangsu University, Zhenjiang ,Jiangsu 212013, P. R. China
| | - Yingcong Wei
- School of Physics and Electronic Engineering, Jiangsu University, Zhenjiang ,Jiangsu 212013, P. R. China
| | - Lele Wang
- School of Materials Science & Engineering, Jiangsu University, Zhenjiang ,Jiangsu 212013, P. R. China
| | - Jing Xu
- School of Physics and Electronic Engineering, Jiangsu University, Zhenjiang ,Jiangsu 212013, P. R. China
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4
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Baranowska D, Zielinkiewicz K, Mijowska E, Zielinska B. Sugars induced exfoliation of porous graphitic carbon nitride for efficient hydrogen evolution in photocatalytic water-splitting reaction. Sci Rep 2024; 14:1998. [PMID: 38263348 PMCID: PMC10805789 DOI: 10.1038/s41598-024-52593-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Accepted: 01/20/2024] [Indexed: 01/25/2024] Open
Abstract
Photocatalytic hydrogen evolution holds great promise for addressing critical energy and environmental challenges, making it an important area in scientific research. One of the most popular photocatalysts is graphitic carbon nitride (gCN), which has emerged as a noteworthy candidate for hydrogen generation through water splitting. However, ongoing research aims to enhance its properties for practical applications. Herein, we introduce a green approach for the fabrication of porous few-layered gCN with surface modifications (such as oxygen doping, carbon deposition, nitrogen defects) with promoted performance in the hydrogen evolution reaction. The fabrication process involves a one-step solvothermal treatment of bulk graphitic carbon nitride (bulk-gCN) in the presence of different sugars (glucose, sucrose, and fructose). Interestingly, the conducted time-dependent process revealed that porous gCN exfoliated in the presence of fructose at 180 °C for 6 h (fructose_6h) exhibits a remarkable 13-fold promotion of photocatalytic hydrogen evolution compared to bulk-gCN. The studied materials were extensively characterized by microscopic and spectroscopic techniques, allowing us to propose a reaction mechanism for hydrogen evolution during water-splitting over fructose_6h. Furthermore, the study highlights the potential of employing a facile and environmentally friendly fructose-assisted solvothermal process to improve the efficiency and stability of catalysts based on graphitic carbon nitride.
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Affiliation(s)
- Daria Baranowska
- Department of Nanomaterials Physicochemistry, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Piastow Ave. 42, 71-065, Szczecin, Poland.
- Center for Advanced Materials and Manufacturing Process Engineering (CAMMPE), West Pomeranian University of Technology, Szczecin, Poland.
| | - Klaudia Zielinkiewicz
- Department of Nanomaterials Physicochemistry, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Piastow Ave. 42, 71-065, Szczecin, Poland
- Center for Advanced Materials and Manufacturing Process Engineering (CAMMPE), West Pomeranian University of Technology, Szczecin, Poland
| | - Ewa Mijowska
- Department of Nanomaterials Physicochemistry, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Piastow Ave. 42, 71-065, Szczecin, Poland
- Center for Advanced Materials and Manufacturing Process Engineering (CAMMPE), West Pomeranian University of Technology, Szczecin, Poland
| | - Beata Zielinska
- Department of Nanomaterials Physicochemistry, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Piastow Ave. 42, 71-065, Szczecin, Poland.
- Center for Advanced Materials and Manufacturing Process Engineering (CAMMPE), West Pomeranian University of Technology, Szczecin, Poland.
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5
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Wang S, He F, Lu Y, Wu Y, Zhang Y, Dong P, Liu X, Zhao C, Wang S, Wang D, Zhang J, Wang S. Enhancing photocatalytic hydrogen production of carbon nitride: Dominant advantage of crystallinity over mass transfer. J Colloid Interface Sci 2024; 654:317-326. [PMID: 37844503 DOI: 10.1016/j.jcis.2023.10.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 10/09/2023] [Accepted: 10/11/2023] [Indexed: 10/18/2023]
Abstract
Mass transfer enhancement and crystallinity engineering are two prevailing technologies for photocatalyst modification. However, their relative effectiveness in enhancing photocatalytic activity remains unclear due to the lack of rational probing catalysts. In this study, we synthesized two distinct carbon nitride (C3N4) catalysts: one with a high specific surface area (CN-HA) and the other with improved crystallinity (CN-HC). These catalysts served as probes to compare their respective impacts on photocatalytic activities. Comprehensive characterization techniques and density functional theory (DFT) calculation results unveiled that crystallinity played a dominant role in light absorption and charge dynamics, while surface area primarily influenced mass transfer in photocatalysis. Importantly, our findings revealed that crystallinity engineering of photocatalyst achieved a greater impact on photocatalytic hydrogen evolution than that from mass transfer enhancement. Consequently, CN-HC demonstrated a remarkable improvement in photocatalytic performance for hydrogen evolution (6465.4 μmol h-1 g-1), surpassing both C3N4 and CN-HA by 19.4- and 2.4-fold, respectively, accompanied by a high apparent quantum yield of 23.8 % at 420 nm. This study not only unveils the dominant factor influencing the activity of photocatalysts but also provides a modified approach for robust solar fuel production, shedding light on the path toward efficient and sustainable energy conversion.
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Affiliation(s)
- Shuling Wang
- State Key Laboratory of Petroleum Pollution Control, China University of Petroleum (East China), 66 West Changjiang Road, Qingdao 266580, PR China
| | - Fengting He
- State Key Laboratory of Petroleum Pollution Control, China University of Petroleum (East China), 66 West Changjiang Road, Qingdao 266580, PR China
| | - Yangming Lu
- State Key Laboratory of Petroleum Pollution Control, China University of Petroleum (East China), 66 West Changjiang Road, Qingdao 266580, PR China
| | - Yuzhao Wu
- State Key Laboratory of Petroleum Pollution Control, China University of Petroleum (East China), 66 West Changjiang Road, Qingdao 266580, PR China
| | - Yang Zhang
- State Key Laboratory of Petroleum Pollution Control, China University of Petroleum (East China), 66 West Changjiang Road, Qingdao 266580, PR China
| | - Pei Dong
- State Key Laboratory of Petroleum Pollution Control, China University of Petroleum (East China), 66 West Changjiang Road, Qingdao 266580, PR China
| | - Xiaoming Liu
- State Key Laboratory of Petroleum Pollution Control, China University of Petroleum (East China), 66 West Changjiang Road, Qingdao 266580, PR China
| | - Chaocheng Zhao
- State Key Laboratory of Petroleum Pollution Control, China University of Petroleum (East China), 66 West Changjiang Road, Qingdao 266580, PR China.
| | - Shuaijun Wang
- School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Dejun Wang
- Qingdao Ronghe Industry Development Group Co., Ltd, Qingdao 266500, PR China
| | - Jinqiang Zhang
- School of Chemical Engineering, The University of Adelaide, North Terrace, Adelaide, SA 5005, Australia.
| | - Shaobin Wang
- School of Chemical Engineering, The University of Adelaide, North Terrace, Adelaide, SA 5005, Australia
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Wang Z, Ding G, Zhang J, Lv X, Wang P, Shuai L, Li C, Ni Y, Liao G. Critical role of hydrogen bonding between microcrystalline cellulose and g-C 3N 4 enables highly efficient photocatalysis. Chem Commun (Camb) 2023; 60:204-207. [PMID: 38050690 DOI: 10.1039/d3cc04800d] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/06/2023]
Abstract
Developing a highly efficient photocatalyst for energy and environmental applications is urgently required. Herein, graphitic carbon nitride (CN) coupled with microcrystalline cellulose (MCC) (denoted as MCC-X/CN) shows excellent photocatalytic performance for tetracycline (TC) degradation and H2 evolution. And the optimized MCC-0.05/CN shows an improved TC degradation rate (Kapp = 0.019 min-1) and H2 evolution rate (642.71 μmol g-1 h-1), which are 1.9 and 22 times higher than those of pure CN, respectively. This improvement primarily results from hydrogen bonding (H-bonding) between CN and MCC, which enables excellent charge separation and migration, leading to the outstanding photoelectrochemical properties of MCC-0.05/CN.
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Affiliation(s)
- Zhaoqiang Wang
- National Forestry and Grassland Administration Key Laboratory of Plant Fiber Functional Materials, College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Guixiang Ding
- National Forestry and Grassland Administration Key Laboratory of Plant Fiber Functional Materials, College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Juntao Zhang
- National Forestry and Grassland Administration Key Laboratory of Plant Fiber Functional Materials, College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Xianqing Lv
- National Forestry and Grassland Administration Key Laboratory of Plant Fiber Functional Materials, College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Peng Wang
- Shandong Chambroad Petrochemicals Co., Ltd, Binzhou, Shandong 256500, China
| | - Li Shuai
- National Forestry and Grassland Administration Key Laboratory of Plant Fiber Functional Materials, College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Chunxue Li
- College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou 350118, China.
| | - Yonghao Ni
- National Forestry and Grassland Administration Key Laboratory of Plant Fiber Functional Materials, College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Guangfu Liao
- National Forestry and Grassland Administration Key Laboratory of Plant Fiber Functional Materials, College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
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Ma Q, Li Y, Tan Y, Xu B, Cai J, Zhang Y, Wang Q, Wu Q, Yang B, Huang J. Recent Advances in Metal-Organic Framework (MOF)-Based Photocatalysts: Design Strategies and Applications in Heavy Metal Control. Molecules 2023; 28:6681. [PMID: 37764456 PMCID: PMC10535165 DOI: 10.3390/molecules28186681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 09/09/2023] [Accepted: 09/14/2023] [Indexed: 09/29/2023] Open
Abstract
The heavy metal contamination of water systems has become a major environmental concern worldwide. Photocatalysis using metal-organic frameworks (MOFs) has emerged as a promising approach for heavy metal remediation, owing to the ability of MOFs to fully degrade contaminants through redox reactions that are driven by photogenerated charge carriers. This review provides a comprehensive analysis of recent developments in MOF-based photocatalysts for removing and decontaminating heavy metals from water. The tunable nature of MOFs allows the rational design of composition and features to enhance light harvesting, charge separation, pollutant absorptivity, and photocatalytic activities. Key strategies employed include metal coordination tuning, organic ligand functionalization, heteroatom doping, plasmonic nanoparticle incorporation, defect engineering, and morphology control. The mechanisms involved in the interactions between MOF photocatalysts and heavy metal contaminants are discussed, including light absorption, charge carrier separation, metal ion adsorption, and photocatalytic redox reactions. The review highlights diverse applications of MOF photocatalysts in treating heavy metals such as lead, mercury, chromium, cadmium, silver, arsenic, nickel, etc. in water remediation. Kinetic modeling provides vital insights into the complex interplay between coupled processes such as adsorption and photocatalytic degradation that influence treatment efficiency. Life cycle assessment (LCA) is also crucial for evaluating the sustainability of MOF-based technologies. By elucidating the latest advances, current challenges, and future opportunities, this review provides insights into the potential of MOF-based photocatalysts as a sustainable technology for addressing the critical issue of heavy metal pollution in water systems. Ongoing efforts are needed to address the issues of stability, recyclability, scalable synthesis, and practical reactor engineering.
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Affiliation(s)
- Qiang Ma
- Key Laboratory of Drinking Water Source Protection in Chengdu Basin of Sichuan Province, Sichuan Provincial Engineering Research Center of City Solid Waste Energy and Building Materials Conversion & Utilization Technology, Chengdu University, Chengdu 610106, China; (Q.M.); (Y.L.); (Y.T.); (Q.W.); (Q.W.)
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Yunling Li
- Key Laboratory of Drinking Water Source Protection in Chengdu Basin of Sichuan Province, Sichuan Provincial Engineering Research Center of City Solid Waste Energy and Building Materials Conversion & Utilization Technology, Chengdu University, Chengdu 610106, China; (Q.M.); (Y.L.); (Y.T.); (Q.W.); (Q.W.)
| | - Yawen Tan
- Key Laboratory of Drinking Water Source Protection in Chengdu Basin of Sichuan Province, Sichuan Provincial Engineering Research Center of City Solid Waste Energy and Building Materials Conversion & Utilization Technology, Chengdu University, Chengdu 610106, China; (Q.M.); (Y.L.); (Y.T.); (Q.W.); (Q.W.)
| | - Bowen Xu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China;
| | - Jun Cai
- National Joint Engineering Research Center of Energy Saving and Environmental Protection Technology in Metallurgy and Chemical Engineering Industry, Kunming University of Science and Technology, Kunming 650093, China;
| | - Yingjie Zhang
- College of Agriculture and Biological Science, Dali University, Dali 671000, China;
| | - Qingyuan Wang
- Key Laboratory of Drinking Water Source Protection in Chengdu Basin of Sichuan Province, Sichuan Provincial Engineering Research Center of City Solid Waste Energy and Building Materials Conversion & Utilization Technology, Chengdu University, Chengdu 610106, China; (Q.M.); (Y.L.); (Y.T.); (Q.W.); (Q.W.)
| | - Qihong Wu
- Key Laboratory of Drinking Water Source Protection in Chengdu Basin of Sichuan Province, Sichuan Provincial Engineering Research Center of City Solid Waste Energy and Building Materials Conversion & Utilization Technology, Chengdu University, Chengdu 610106, China; (Q.M.); (Y.L.); (Y.T.); (Q.W.); (Q.W.)
| | - Bowen Yang
- Key Laboratory of Drinking Water Source Protection in Chengdu Basin of Sichuan Province, Sichuan Provincial Engineering Research Center of City Solid Waste Energy and Building Materials Conversion & Utilization Technology, Chengdu University, Chengdu 610106, China; (Q.M.); (Y.L.); (Y.T.); (Q.W.); (Q.W.)
| | - Jin Huang
- Key Laboratory of Drinking Water Source Protection in Chengdu Basin of Sichuan Province, Sichuan Provincial Engineering Research Center of City Solid Waste Energy and Building Materials Conversion & Utilization Technology, Chengdu University, Chengdu 610106, China; (Q.M.); (Y.L.); (Y.T.); (Q.W.); (Q.W.)
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Zhang T, Meng F, Gao M, Wei J, Lim KJH, Lim KH, Chirawatkul P, Wong ASW, Kawi S, Ho GW. Porous Host-Guest MOF-Semiconductor Hybrid with Multisites Heterojunctions and Modulable Electronic Band for Selective Photocatalytic CO 2 Conversion and H 2 Evolution. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2301121. [PMID: 37271929 DOI: 10.1002/smll.202301121] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 05/19/2023] [Indexed: 06/06/2023]
Abstract
Optimizing catalysts for competitive photocatalytic reactions demand individually tailored band structure as well as intertwined interactions of light absorption, reaction activity, mass, and charge transport. Here, a nanoparticulate host-guest structure is rationally designed that can exclusively fulfil and ideally control the aforestated uncompromising requisites for catalytic reactions. The all-inclusive model catalyst consists of porous Co3 O4 host and Znx Cd1- x S guest with controllable physicochemical properties enabled by self-assembled hybrid structure and continuously amenable band gap. The effective porous topology nanoassembly, both at the exterior and the interior pores of a porous metal-organic framework (MOF), maximizes spatially immobilized semiconductor nanoparticles toward high utilization of particulate heterojunctions for vital charge and reactant transfer. In conjunction, the zinc constituent band engineering is found to regulate the light/molecules absorption, band structure, and specific reaction intermediates energy to attain high photocatalytic CO2 reduction selectivity. The optimal catalyst exhibits a H2 -generation rate up to 6720 µmol g-1 h-1 and a CO production rate of 19.3 µmol g-1 h-1 . These findings provide insight into the design of discrete host-guest MOF-semiconductor hybrid system with readily modulated band structures and well-constructed heterojunctions for selective solar-to-chemical conversion.
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Affiliation(s)
- Tianxi Zhang
- Department of Chemical & Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Fanlu Meng
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore, 117583, Singapore
| | - Minmin Gao
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore, 117583, Singapore
| | - Jishi Wei
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore, 117583, Singapore
| | - Kane Jian Hong Lim
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore, 117583, Singapore
| | - Kang Hui Lim
- Department of Chemical & Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Prae Chirawatkul
- Synchrotron Light Research Institute (Public Organization), 111 University Avenue, Muang, Nakhon Ratchasima, 30000, Thailand
| | - Andrew See Weng Wong
- Facility for Analysis Characterization Testing and Simulation (FACTS), Nanyang Technological University, Singapore, 639798, Singapore
| | - Sibudjing Kawi
- Department of Chemical & Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Ghim Wei Ho
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore, 117583, Singapore
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore, 117602, Singapore
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9
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Basyach P, Deb J, Sk S, Pal U, Gogoi M, Sastry GN, Saikia L. Controlled Ni doping on a g-C 3N 4/CuWO 4 photocatalyst for improved hydrogen evolution. Phys Chem Chem Phys 2023; 25:23033-23046. [PMID: 37599612 DOI: 10.1039/d3cp03194b] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
The development of a low-cost, environment-friendly and suitable semiconductor-based heterogeneous photocatalyst poses a great challenge towards extremely competent and substantial hydrogen evolution. A series of environment-friendly and proficient S-scheme Ni-doped CuWO4 nanocrystals supported on g-C3N4 nanocomposites (Ni-CuWO4/g-C3N4) were constructed to ameliorate the photocatalytic efficacy of pure g-C3N4 and Ni-CuWO4 and their activity in H2 generation through photocatalytic water splitting was evaluated. The Ni-CuWO4 nanoparticles were synthesized through doping of Ni2+ on wolframite CuWO4 crystals via the chemical precipitation method. An elevated hydrogen generation rate of 1980 μmol h-1 g-1 was accomplished over the 0.2Ni-CuWO4/g-C3N4 (0.2NCWCN) nanocomposite with an apparent quantum yield (AQY) of 6.49% upon visible light illumination (λ ≥ 420 nm), which is evidently 7.1 and 17.2 fold higher than those produced from pristine g-C3N4 and Ni-CuWO4. The substantial enhancement in the photocatalytic behaviour is primarily because of the large surface area, limited band gap energy of the semiconductor composite and magnified light harvesting capability towards visible light through the inclusion of g-C3N4, thus diminishing the reassembly rate of photoinduced excitons. Further, density functional theory (DFT) calculations were performed to investigate the structural, electronic and optical properties of the composite. Theoretical results confirmed that the Ni-CuWO4/g-C3N4 composite is a potential candidate for visible-light-driven photocatalysts and corroborated with the experimental findings. This research provides a meaningful and appealing perspective on developing cost-effective and very proficient two-dimensional (2D) g-C3N4-based materials for photocatalytic H2 production to accelerate the separation and transmission process of radiative charge carriers.
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Affiliation(s)
- Purashri Basyach
- Advanced Materials Group, Materials Sciences & Technology Division, CSIR-North East Institute of Science and Technology, Jorhat-785006, Assam, India.
- Academy of Scientific and Innovative Research, Ghaziabad, UP, India
| | - Jyotirmoy Deb
- Advanced Computation and Data Sciences Division, CSIR-North East Institute of Science and Technology, Jorhat-785006, Assam, India
| | - Saddam Sk
- Academy of Scientific and Innovative Research, Ghaziabad, UP, India
- Department of Energy and Environmental Engineering, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India
| | - Ujjwal Pal
- Academy of Scientific and Innovative Research, Ghaziabad, UP, India
- Department of Energy and Environmental Engineering, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India
| | - Madhulekha Gogoi
- Advanced Materials Group, Materials Sciences & Technology Division, CSIR-North East Institute of Science and Technology, Jorhat-785006, Assam, India.
| | - G Narahari Sastry
- Academy of Scientific and Innovative Research, Ghaziabad, UP, India
- Advanced Computation and Data Sciences Division, CSIR-North East Institute of Science and Technology, Jorhat-785006, Assam, India
| | - Lakshi Saikia
- Advanced Materials Group, Materials Sciences & Technology Division, CSIR-North East Institute of Science and Technology, Jorhat-785006, Assam, India.
- Academy of Scientific and Innovative Research, Ghaziabad, UP, India
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10
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Shi N, Yu Q, Li Y, Wang Q, Pan J, Ren X, Deng S. Preparation and Photocatalytic Degradation Performance of Amine-Rich Carbon Nitride with Structural Modulation of the Precursor. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:11720-11730. [PMID: 37557885 DOI: 10.1021/acs.langmuir.3c01312] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/11/2023]
Abstract
The photocatalytic performance of graphitic phase carbon nitride (g-C3N4) is strongly influenced by its own microstructure as well as the precursor structure that causes the microstructure changes. In this paper, a composite precursor of sodium chloride and cyanamide (NaCl/CA-2) was obtained by freeze-drying, which possess an aggregated state different from that of the non-freeze-drying method. This new aggregation state with the introduction of sodium ions into the cyanamide lattice results in a higher activation energy of NaCl/CA-2 in the thermal polycondensation process of the molten salt-assisted preparation of g-C3N4, which prevented the condensation of two cyanamides to one dicyandiamide, ultimately obtaining FD-CN with an amino-rich structure. The nitrogen atoms on the amino group can provide the photocatalyst with more unpaired electrons that can participate in the photoexcitation process, further improving its electron-hole separation ability and charge transfer efficiency, thus effectively enhancing its photocatalytic activity. Compared to the original g-C3N4, the photocatalytic activity of FD-CN for the degradation of methylene blue increased 2.19 times.
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Affiliation(s)
- Naishen Shi
- Department of Materials Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China
| | - Qingbo Yu
- Department of Materials Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China
| | - Yuqi Li
- Department of Materials Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China
| | - Qingping Wang
- Department of Materials Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China
| | - Jia Pan
- Department of Materials Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China
| | - Xinxin Ren
- Department of Materials Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China
| | - Shuli Deng
- Department of Materials Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China
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11
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Zhang H, Liu Y, Liu H, Yin J, Shi L, Tang H. Surface anchoring of nickel sulfide clusters as active sites and cocatalysts for photocatalytic antibiotic degradation and bacterial inactivation. J Colloid Interface Sci 2023; 637:421-430. [PMID: 36716666 DOI: 10.1016/j.jcis.2023.01.109] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 01/01/2023] [Accepted: 01/22/2023] [Indexed: 01/27/2023]
Abstract
Achieving photocatalytic antibiotic degradation and bacterial inactivation with high efficiency remains a challenging mission to originate a clean environment. In this work, ultra-small NiS clusters were in-situ grew on photoactive ZnIn2S4 nanoflower supports to form a NiS/ZnIn2S4 heterojunction, in which a strong and surface-limited binding was formed between the NiS clusters and ZnIn2S4 supports. The in-situ formed NiS clusters not only appeased interfacial charge transfer resistance of the heterojunction but also eventuated a strong built-in electric field, resulting a fast electron migration from ZnIn2S4 to NiS clusters functioned as cocatalyst and active sites to boost the separation efficiency of photogenerated carriers. As a result, the optimal 2NiS/ZnIn2S4 heterojunction expressed a higher photocatalytic Escherichia inactivation activity (99.23 % for 3 h) and a raised antibiotic degradation performance, including tetracycline (60 % for 20 min), ofloxacin (62 % for 20 min), oxytetracycline (63 % for 20 min) compared to that of pure ZnIn2S4 (39.14 % for Escherichia inactivation and 44 % for tetracycline degradation). This work furnishes a great promise to develop inorganic clusters coupled photocatalysts for light-driven environmental application.
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Affiliation(s)
- Hao Zhang
- Department of Emergency, The Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212000, China
| | - Yanru Liu
- Department of Emergency, The Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212000, China
| | - Hanqiong Liu
- Department of Emergency, The Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212000, China
| | - Jiangning Yin
- Department of Emergency, The Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing, Jiangsu 211100, China
| | - Liang Shi
- Department of Nuclear Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu 210006, China.
| | - Hua Tang
- School of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, P.R. China.
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12
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Wu L, Mi X, Wang S, Huang C, Zhang Y, Wang YM, Wang Y. Construction of PCN-222 and Atomically Thin 2D CNs Van Der Waals Heterojunction for Enhanced Visible Light Photocatalytic Hydrogen Production. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1318. [PMID: 37110903 PMCID: PMC10143698 DOI: 10.3390/nano13081318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/05/2023] [Accepted: 04/07/2023] [Indexed: 06/19/2023]
Abstract
Atomically thin two-dimensional (2D) CN sheets have attracted extensive attention in the field of photocatalysis because of their shorter diffusion path of photogenerated carriers and abundant surface reaction sites than bulk CN. However, 2D CNs still exhibit poor visible-light photocatalytic activity because of a strong quantum size effect. Here, PCN-222/CNs vdWHs were successfully constructed using the electrostatic self-assembly method. The results showed that PCN-222/CNs vdWHs with 1 wt.% PCN-222 enhanced the absorption range of CNs from 420 to 438 nm, which improved the absorption capacity of visible light. Additionally, the hydrogen production rate of 1 wt.% PCN-222/CNs is four times that of the pristine 2D CNs. This study provides a simple and effective strategy for 2D CN-based photocatalysts to promote visible light absorption.
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Affiliation(s)
- Liting Wu
- School of Advanced Materials and Nanotechnology, Academy of Advanced Interdisciplinary Research, Xidian University, Xi’an 710126, China
| | - Xuke Mi
- School of Advanced Materials and Nanotechnology, Academy of Advanced Interdisciplinary Research, Xidian University, Xi’an 710126, China
| | - Shaopeng Wang
- School of Advanced Materials and Nanotechnology, Academy of Advanced Interdisciplinary Research, Xidian University, Xi’an 710126, China
| | - Can Huang
- School of Advanced Materials and Nanotechnology, Academy of Advanced Interdisciplinary Research, Xidian University, Xi’an 710126, China
| | - Yu Zhang
- Department of Physics, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Yong-Mei Wang
- School of Advanced Materials and Nanotechnology, Academy of Advanced Interdisciplinary Research, Xidian University, Xi’an 710126, China
| | - Yong Wang
- School of Advanced Materials and Nanotechnology, Academy of Advanced Interdisciplinary Research, Xidian University, Xi’an 710126, China
- The State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, Xidian University, Xi’an 710126, China
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13
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Hasija V, Singh P, Thakur S, Nguyen VH, Van Le Q, Ahamad T, Alshehri SM, Raizada P, Matsagar BM, Wu KCW. O and S co-doping induced N-vacancy in graphitic carbon nitride towards photocatalytic peroxymonosulfate activation for sulfamethoxazole degradation. CHEMOSPHERE 2023; 320:138015. [PMID: 36746247 DOI: 10.1016/j.chemosphere.2023.138015] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 12/25/2022] [Accepted: 01/28/2023] [Indexed: 06/18/2023]
Abstract
Doping-induced vacancy engineering of graphitic carbon nitride (GCN) is beneficial for bandgap modulation, efficient electronic excitation, and facilitated charge carrier migration. In this study, synthesis of oxygen and sulphur co-doped induced N vacancies (OSGCN) by the hydrothermal method was performed to activate peroxymonosulfate (PMS) for sulfamethoxazole (SMX) antibiotic degradation and H2 production. The results from experimental and DFT simulation studies validate the synergistic effects of co-dopants and N-vacancies, i.e., bandgap lowering, electron-hole pairs separation, and high solar energy utilization. The substitution of sp2 N atom by O and S co-dopants causes strong delocalization of HOMO-LUMO distribution, enhancing carrier mobility, increasing reactive sites, and facilitating charge-carrier separation. Remarkably, OSGCN/PMS photocatalytic system achieved 99.4% SMX degradation efficiency and a high H2 generation rate of 548.23 μ mol g-1 h-1 within 60 min and 36 h, respectively under visible light irradiations. The SMX degradation kinetics was pseudo-first-order with retained recycling efficiency up to 4 catalytic cycles. The results of EPR and chemical scavenging experiments revealed the redox action of reactive oxidative species, wherein 1O2 was the dominant reactive species in SMX degradation. The identification of formed intermediates and the SMX stepwise degradation pathway was investigated via LC-MS analysis and DFT studies, respectively. The results from this work anticipated deepening the understanding of PMS activation by substitutional co-doping favoring N-vacancy formation in GCN lattice for improved photocatalytic activity.
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Affiliation(s)
- Vasudha Hasija
- School of Advanced Chemical Sciences, Shoolini University, Solan, Himachal Pradesh, 173212, India
| | - Pardeep Singh
- School of Advanced Chemical Sciences, Shoolini University, Solan, Himachal Pradesh, 173212, India
| | - Sourbh Thakur
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, B. Krzywoustego 4, 44-100, Gliwice, Poland
| | - Van-Huy Nguyen
- Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education (CARE), Kelambakkam, Kanchipuram District, 603103, Tamil Nadu, India
| | - Quyet Van Le
- Faculty of Department of Materials Science and Engineering, Korea University, 145, Anamro Seongbuk-gu, Seoul, 02841, South Korea
| | - Tansir Ahamad
- Department of Chemistry, College of Science, King Saud University, Saudi Arabia.
| | - Saad M Alshehri
- Department of Chemistry, College of Science, King Saud University, Saudi Arabia
| | - Pankaj Raizada
- School of Advanced Chemical Sciences, Shoolini University, Solan, Himachal Pradesh, 173212, India.
| | - Babasaheb M Matsagar
- Department of Chemical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, 10617, Taiwan
| | - Kevin C-W Wu
- Department of Chemical Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei, 10617, Taiwan.
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14
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Yao L, Sun C, Lin H, Li G, Lian Z, Song R, Zhuang S, Zhang D. Enhancement of AFB 1 Removal Efficiency via Adsorption/Photocatalysis Synergy Using Surface-Modified Electrospun PCL-g-C 3N 4/CQDs Membranes. Biomolecules 2023; 13:biom13030550. [PMID: 36979485 PMCID: PMC10046413 DOI: 10.3390/biom13030550] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 02/18/2023] [Accepted: 03/07/2023] [Indexed: 03/29/2023] Open
Abstract
Aflatoxin B1 (AFB1) is a highly toxic mycotoxin produced by aspergillus species under specific conditions as secondary metabolites. In this study, types of PCL (Polycaprolactone) membranes anchored (or not) to g-C3N4/CQDs composites were prepared using electrospinning technology with (or without) the following surface modification treatment to remove AFB1. These membranes and g-C3N4/CQDs composites were characterized by SEM, TEM, UV-vis, XRD, XPS and FTIR to analyze their physical and chemical properties. Among them, the modified PCL-g-C3N4/CQDs electrospun membranes exhibited an excellent ability to degrade AFB1 via synergistic effects of adsorption and photocatalysis, and the degradation rate of 0.5 μg/mL AFB1 solution was observed to be up to 96.88% in 30 min under visible light irradiation. Moreover, the modified PCL-g-C3N4/CQDs electrospun membranes could be removed directly after the reaction process without centrifugal or magnetic separation, and the regeneration was a green approach synchronized with the reaction under visible light avoiding physical or chemical treatment. The mechanism of adsorption by electrostatic attraction and hydrogen bonding interaction was revealed and the mechanism of photodegradation of AFB1 was also proposed based on active species trapping experiments. This study illuminated the highly synergic adsorption and photocatalytic AFB1 removal efficiency without side effects from the modified PCL-g-C3N4/CQDs electrospun membranes, thereby offering a continual and green solution to AFB1 removal in practical application.
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Affiliation(s)
- Liangtao Yao
- Engineering Research Center of Optical Instrument and System, Ministry of Education and Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, No.516 Jungong Road, Shanghai 200093, China
| | - Changpo Sun
- Standards and Quality Center of National Food and Strategic Reserves Administration, No.25 Yuetan North Street, Xicheng District, Beijing 100834, China
| | - Hui Lin
- Engineering Research Center of Optical Instrument and System, Ministry of Education and Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, No.516 Jungong Road, Shanghai 200093, China
| | - Guisheng Li
- Department of Chemistry, College of Science, University of Shanghai for Science and Technology, No.516 Jungong Road, Shanghai 200093, China
| | - Zichao Lian
- Department of Chemistry, College of Science, University of Shanghai for Science and Technology, No.516 Jungong Road, Shanghai 200093, China
| | - Ruixin Song
- Engineering Research Center of Optical Instrument and System, Ministry of Education and Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, No.516 Jungong Road, Shanghai 200093, China
| | - Songlin Zhuang
- Engineering Research Center of Optical Instrument and System, Ministry of Education and Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, No.516 Jungong Road, Shanghai 200093, China
| | - Dawei Zhang
- Engineering Research Center of Optical Instrument and System, Ministry of Education and Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, No.516 Jungong Road, Shanghai 200093, China
- Fujian Provincial Key Laboratory for Advanced Micro-Nano Photonics Technology and Devices, Research Center for Photonics Technology, Quanzhou Normal University, Quanzhou 362000, China
- Correspondence:
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15
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FeOx nanoclusters decorated TiO2 for boosting white LED driven photocatalytic Fenton-like norfloxacin degradation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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16
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Li J, Lu Z, Jin C, Shen J, Jiang H, Yu X, Sun L, Wang W, Wang L, Liu Q. Plasmonic Ni 3N Cocatalyst Boosting Directional Charge Transfer and Separation toward Synergistic Photocatalytic–Photothermal Performance of Hydrogen and Benzaldehyde Production as Well as Bacterial Inactivation. Inorg Chem 2022; 61:18979-18989. [DOI: 10.1021/acs.inorgchem.2c03268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Jinhe Li
- School of Materials Science & Engineering, Jiangsu University, Zhenjiang212013, China
| | - Zhongxi Lu
- School of Materials Science & Engineering, Jiangsu University, Zhenjiang212013, China
| | - Cheng Jin
- School of Materials Science & Engineering, Jiangsu University, Zhenjiang212013, China
| | - Jun Shen
- School of Pharmacy, Suzhou Vocational Health College, Suzhou215009, P. R. China
| | - Haopeng Jiang
- School of Materials Science & Engineering, Jiangsu University, Zhenjiang212013, China
| | - Xiaohui Yu
- School of Materials Science & Engineering, Jiangsu University, Zhenjiang212013, China
| | - Lijuan Sun
- School of Materials Science & Engineering, Jiangsu University, Zhenjiang212013, China
| | - Weikang Wang
- School of Materials Science & Engineering, Jiangsu University, Zhenjiang212013, China
| | - Lele Wang
- School of Materials Science & Engineering, Jiangsu University, Zhenjiang212013, China
| | - Qinqin Liu
- School of Materials Science & Engineering, Jiangsu University, Zhenjiang212013, China
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17
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Su H, Yu X, Wang W, Wang L, Tang H, Liu Q. A 2D bimetallic Ni-Co hydroxide monolayer cocatalyst for boosting photocatalytic H 2 evolution. Chem Commun (Camb) 2022; 58:6180-6183. [PMID: 35485577 DOI: 10.1039/d2cc01557a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Here, we report two-dimensional (2D) Ni-Co hydroxide monolayers (NiCo-HMs) as a highly active cocatalyst for enhancing the photocatalytic H2 evolution of 2D g-C3N4 nanosheets. The NiCo-HMs can expand the interface of electron migration, promote the separation of photogenerated carriers, provide synergistic Co-Ni active sites, and optimize atomic hydrogen adsorption to improve the kinetics of the catalytic reaction. The resulting 2D/2D NiCo-HMs/g-C3N4 heterojunction displays a high photocatalytic H2 evolution of 3.58 mmol g-1 h-1.
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Affiliation(s)
- Haiwei Su
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, P. R. China.
| | - Xiaohui Yu
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, P. R. China.
| | - Weikang Wang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212100, P. R. China
| | - Lele Wang
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, P. R. China.
| | - Hua Tang
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, P. R. China. .,School of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Qinqin Liu
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, P. R. China.
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18
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Shittu FB, Iqbal A, Ahmad MN, Yusop MR, Ibrahim MNM, Sabar S, Wilson LD, Yanto DHY. Insight into the photodegradation mechanism of bisphenol-A by oxygen doped mesoporous carbon nitride under visible light irradiation and DFT calculations. RSC Adv 2022; 12:10409-10423. [PMID: 35424996 PMCID: PMC8984687 DOI: 10.1039/d2ra00995a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 03/24/2022] [Indexed: 11/21/2022] Open
Abstract
Oxygen doped mesoporous carbon nitride (O-MCN) was successfully synthesized through one-step thermal polymerization of urea and glucose utilizing nanodisc silica (NDS) from rice husk ash as a hard template. The CO2 gas, NH3 and water vapor produced during the thermal process reshaped the morphology and textural properties of the of O-MCN compared to pristine mesoporous carbon nitride (MCN). Highest bisphenol A (BPA) removal achieved under visible light irradiation was 97%, with 60% mineralization ([BPA] = 10 mg L-1: catalyst dosage = 40 mg L-1; pH = 10; 180 min). In addition to mesoporosity, the sub-gap impurity states created from the oxygen doping reduced recombination rate of photogenerated carriers. Holes (h+) and superoxide (O2˙-) were identified as the predominant active species responsible for the photodegradation process. The photodegradation route was proposed based on the intermediates detected by LC-time-of-flight/mass spectrometry (LC/TOF-MS). The Density of States (DOS) showed that oxygen doping resulted in a higher photoactivity due to the stronger localization and delocalization of the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO). The adsorption pathway of the BPA on the O-MCN and MCN was successfully predicted using the DFT calculations, namely molecular electrostatic potential (MEP), global and local descriptors.
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Affiliation(s)
- Fatimah Bukola Shittu
- School of Chemical Sciences, Universiti Sains Malaysia Minden 11800 Penang Malaysia
- The Federal Polytechnic Offa P.M.B 420 Offa Kwara State Nigeria
| | - Anwar Iqbal
- School of Chemical Sciences, Universiti Sains Malaysia Minden 11800 Penang Malaysia
| | - Mohammad Norazmi Ahmad
- Experimental and Theoretical Research Lab, Department of Chemistry, Kulliyyah of Science, International Islamic University Malaysia Bandar Indera Mahkota 25200 Kuantan Pahang Malaysia
| | - Muhammad Rahimi Yusop
- Department of Chemical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia 43600 Bangi Malaysia
| | | | - Sumiyyah Sabar
- Chemical Sciences Programme, School of Distance Education, Universiti Sains Malaysia Minden 11800 Penang Malaysia
| | - Lee D Wilson
- Department of Chemistry, University of Saskatchewan 110 Science Place, Room 165 Thorvaldson Building Saskatoon SK S7N 5C9 Canada
| | - Dede Heri Yuli Yanto
- Research Center for Applied Microbiology, National Research and Innovation Agency (BRIN) Indonesia
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