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Xu H, Cao L, Yu Y, Li Y, Liu X, Mao C, Zhang L. Phosphate modified nanoarchitectonics for promoted photocatalytic singlet oxygen generation and carbamazepine degradation of (010) facet-exposed BiOCl. J Colloid Interface Sci 2024; 678:1012-1021. [PMID: 39326162 DOI: 10.1016/j.jcis.2024.09.180] [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: 07/26/2024] [Revised: 09/18/2024] [Accepted: 09/21/2024] [Indexed: 09/28/2024]
Abstract
1O2 generation over (001) or (010) facet exposed BiOCl (B001 or B010) with/without phosphate modification were studied from the aspects of excitons involved energy transfer route, the O2- oxidation based charge transfer route and the H2O2 oxidation by HClO. Phosphate modification not only enhance charge separation thus result in H2O2 oxidation by HClO to release 1O2 but also weaken excitonic effect in the confined layer of BiOCl accordingly affect 1O2 generation via energy transfer. Considering [001] orientation favors the formation of excitons than that of [010] direction over BiOCl, excitons loss was hardly compensated by the H2O2 oxidation by HClO for 1O2 generation over phosphate modified B001. Nevertheless, limited excitonic effect makes the O2- oxidation by h+ via charge transfer as dominant route for 1O2 yielding over B010, the extra H2O2 oxidation with HClO after phosphate modification significantly enhance 1O2 generation over B010 followed with 2.2 times higher carbamazepine photodegradation activity. The initial attack of CC bond via 1O2 to form epoxide played important roles on carbamazepine degradation. This study demonstrated that the facet-specific phosphate modification of photocatalysts can finely tune reactive 1O2 species for superior pharmaceuticals degradations.
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Affiliation(s)
- Hua Xu
- Key Laboratory of Green Chemical Engineering Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China.
| | - Liling Cao
- Key Laboratory of Green Chemical Engineering Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Yi Yu
- Key Laboratory of Green Chemical Engineering Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Yuan Li
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, Central China Normal University, Wuhan 430079, China
| | - Xiangming Liu
- Key Laboratory of Green Chemical Engineering Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Chengliang Mao
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, Central China Normal University, Wuhan 430079, China.
| | - Lizhi Zhang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
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2
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Zheng H, Liu Y, Ma Z, Debroye E, Ye J, Zhang L, Liu T. High-Entropy Perovskite Oxides as a Family of Electrocatalysts for Efficient and Selective Nitrogen Oxidation. ACS NANO 2024; 18:17642-17650. [PMID: 38913550 DOI: 10.1021/acsnano.4c02231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
Electrocatalytic nitrogen oxidation reaction (NOR) can convert nitrogen (N2) into nitrate (NO3-) under ambient conditions, providing an attractive approach for synthesis of NO3-, alternative to the current approach involving the harsh Haber-Bosch and Ostwald oxidation processes that necessitate high temperature, high pressure, and substantial carbon emission. Developing efficient NOR catalysts is a prerequisite, which remains a formidable challenge, owing to the weak activation/dissociation of N2. A variety of NOR electrocatalysts have been developed, but their NOR kinetics are still extremely sluggish, resulting in inferior Faradaic Efficiencies. Here, we report a high-entropy Ru-based perovskite oxide (denoted as Ru-HEP) that can function as a high-performance NOR catalyst and exhibit a high NO3- yield rate of 39.0 μmol mg-1 h-1 with a Faradaic Efficiency of 32.8%. Both our experimental results and theoretical calculations suggest that the high-entropy configuration of Ru-HEP perovskite oxide can markedly enhance the oxygen-vacancy concentration, where the Ru sites and their neighboring oxygen vacancies can serve as unsaturated centers and decrease the overall energy barrier for N2 electrooxidation, thereby leading to promoted NOR kinetics. This work presents an alternative avenue for promoting NOR catalysis on perovskite oxides through the high-entropy engineering strategy.
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Affiliation(s)
- Hui Zheng
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Yunxia Liu
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - Ziwei Ma
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Elke Debroye
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven 3001, Belgium
| | - Jinyu Ye
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Longsheng Zhang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Tianxi Liu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
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3
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Di J, Chen C, Wu Y, Chen H, Xiong J, Long R, Li S, Song L, Jiang W, Liu Z. Asymmetric Electron Redistribution in Niobic-Oxygen Vacancy Associates to Tune Noncovalent Interaction in CO 2 Photoreduction. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2401914. [PMID: 38436110 DOI: 10.1002/adma.202401914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Indexed: 03/05/2024]
Abstract
The role of vacancy associates in photocatalytic CO2 reduction is an open question. Herein, the Nb─O vacancy associates (VNb─O) are engineered into niobic acid (NA) atomic layers to tailor the CO2 photoreduction performance. The intrinsic charge compensation from O to Nb around Nb─O vacancy associates can manipulate the active electronic states, leading to the asymmetric electron redistribution. These local symmetry breaking sites show a charge density gradient, forming a localized polarization field to polarize nonpolar CO2 molecules and tune the noncovalent interaction of reaction intermediates. This unique configuration contributes to the 9.3 times increased activity for photocatalytic CO2 reduction. Meantime, this VNb─O NA also shows excellent photocatalytic activity for NO3 --NH4 + synthesis, with NH4 + formation rate up to 3442 µmol g-1 h-1. This work supplies fresh insights into the vacancy associate design for electron redistribution and noncovalent interaction tuning in photocatalysis.
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Affiliation(s)
- Jun Di
- School of Chemistry and Chemical Engineering, National Special Superfine Powder Engineering Research Center, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Chao Chen
- School of Materials Science & Engineering, Nanyang Technological University, Singapore, 639798, Singapore
- Xi'an Key Laboratory of Liquid Crystal and Organic Photovoltaic Materials, Xi'an Modern Chemistry Research Institute, Xi'an, 710065, P. R. China
| | - Yao Wu
- School of Materials Science & Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Hao Chen
- National Synchrotron Radiation Laboratory, State Key Laboratory of Particle Detection and Electronics, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Jun Xiong
- Institute for Energy Research, Jiangsu University, Zhenjiang, 212013, P. R. China
| | - Ran Long
- National Synchrotron Radiation Laboratory, State Key Laboratory of Particle Detection and Electronics, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Shuzhou Li
- School of Materials Science & Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Li Song
- National Synchrotron Radiation Laboratory, State Key Laboratory of Particle Detection and Electronics, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Wei Jiang
- School of Chemistry and Chemical Engineering, National Special Superfine Powder Engineering Research Center, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Zheng Liu
- School of Materials Science & Engineering, Nanyang Technological University, Singapore, 639798, Singapore
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4
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Wang S, Song D, Liao L, Li M, Li Z, Zhou W. Surface and interface engineering of BiOCl nanomaterials and their photocatalytic applications. Adv Colloid Interface Sci 2024; 324:103088. [PMID: 38244532 DOI: 10.1016/j.cis.2024.103088] [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: 09/17/2023] [Revised: 11/29/2023] [Accepted: 01/07/2024] [Indexed: 01/22/2024]
Abstract
BiOCl materials have received much attention because of their unique optical and electrical properties. Still, their unsatisfactory catalytic performance has been troubling researchers, limiting the application of BiOCl-based photocatalysts. Therefore, many researchers have studied the adjustment of BiOCl-based materials to enhance photocatalytic efficiency. This review focuses on surface and interface engineering strategies for boosting the photocatalytic performance of BiOCl-based nanomaterials, including forming oxygen vacancy defects, constructing metal/BiOCl, and the fabrication of semiconductor/BiOCl nanocomposites. The photocatalytic applications of the above composites are also concluded in photodegradation of aqueous pollutants, photocatalytic NO removal, photo-induced H2 production, and CO2 reduction. Special emphasis has been given to the modification methods of BiOCl and photocatalytic mechanisms to provide a more detailed understanding for researchers in the fields of energy conversion and materials sciences.
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Affiliation(s)
- Shijie Wang
- Shandong Provincial Key Laboratory of Molecular Engineering School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong 250353, PR China
| | - Dongxue Song
- School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China
| | - Lijun Liao
- Shandong Provincial Key Laboratory of Molecular Engineering School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong 250353, PR China.
| | - Mingxia Li
- School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China.
| | - Zhenzi Li
- Shandong Provincial Key Laboratory of Molecular Engineering School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong 250353, PR China.
| | - Wei Zhou
- Shandong Provincial Key Laboratory of Molecular Engineering School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong 250353, PR China.
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5
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Shang H, Jia H, Zhang W, Li S, Wang Q, Yang Q, Zhang C, Shi Y, Wang Y, Li P, He Y, Xiao S, Wang D, Zhang D. Surface Hydrogen Bond-Induced Oxygen Vacancies of TiO 2 for Two-Electron Molecular Oxygen Activation and Efficient NO Oxidation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:20400-20409. [PMID: 37987747 DOI: 10.1021/acs.est.3c06593] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
Defect engineering can provide a feasible approach to achieving ambient molecular oxygen activation. However, conventional surface defects (e.g., oxygen vacancies, OVs), featured with the coordinatively unsaturated metal sites, often favor the reduction of O2 to •O2- rather than O22- via two-electron transfer, hindering the efficient pollutant removal with high electron utilization. Herein, we demonstrate that this bottleneck can be well discharged by modulating the electronic structure of OVs via phosphorization. As a proof of concept, TiO2 nanoparticles are adopted as a model material for NaH2PO2 (HP) modification, in which HP induces the formation of OVs via weakening the Ti-O bonds through the hydrogen bond interactions. Additionally, the formed Ti-O-P covalent bond refines the electronic structure of OVs, which enables rapid electron transfer for two-electron molecular oxygen activation. As exemplified by NO oxidation, HP-modified TiO2 with abundant OVs achieved complete NO removal with high selectivity for benign nitrate, superior to that of pristine TiO2. This study highlights a promising approach to regulate the O2 activation via an electronic structure modulation and provides fresh insights into the rational design of a photocatalyst for environmental remediation.
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Affiliation(s)
- Huan Shang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, P. R. China
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Hongbao Jia
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, P. R. China
| | - Wenbin Zhang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, P. R. China
| | - Shuangjun Li
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Qing Wang
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Qingyu Yang
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Chi Zhang
- School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Yuxin Shi
- School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Yongjie Wang
- School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Pengpeng Li
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, P. R. China
| | - Yucheng He
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, P. R. China
| | - Shuning Xiao
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, P. R. China
| | - Ding Wang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, P. R. China
| | - Dieqing Zhang
- The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, P. R. China
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Wang S, Song D, Liao L, Wang B, Li Z, Li M, Zhou W. Bi/Mn-Doped BiOCl Nanosheets Self-Assembled Microspheres toward Optimized Photocatalytic Performance. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2408. [PMID: 37686916 PMCID: PMC10490148 DOI: 10.3390/nano13172408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 08/20/2023] [Accepted: 08/23/2023] [Indexed: 09/10/2023]
Abstract
Doping engineering of metallic elements is of significant importance in photocatalysis, especially in the transition element range where metals possess empty 'd' orbitals that readily absorb electrons and increase carrier concentration. The doping of Mn ions produces dipole interactions that change the local structure of BiOCl, thus increasing the specific surface area of BiOCl and the number of mesoporous distributions, and providing a broader platform and richer surface active sites for catalytic reactions. The combination of Mn doping and metal Bi reduces the forbidden bandwidth of BiOCl, thereby increasing the absorption in the light region and strengthening the photocatalytic ability of BiOCl. The degradation of norfloxacin by Bi/Mn-doped BiOCl can reach 86.5% within 10 min. The synergistic effect of Mn doping and Bi metal can change the internal energy level and increase light absorption simultaneously. The photocatalytic system created by such a dual-technology combination has promising applications in environmental remediation.
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Affiliation(s)
- Shijie Wang
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; (S.W.); (L.L.); (Z.L.)
| | - Dongxue Song
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People’s Republic of China, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China;
| | - Lijun Liao
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; (S.W.); (L.L.); (Z.L.)
| | - Bo Wang
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; (S.W.); (L.L.); (Z.L.)
| | - Zhenzi Li
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; (S.W.); (L.L.); (Z.L.)
| | - Mingxia Li
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People’s Republic of China, School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China;
| | - Wei Zhou
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; (S.W.); (L.L.); (Z.L.)
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7
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Di J, Hao G, Liu G, Zhou J, Jiang W, Liu Z. Defective materials for CO2 photoreduction: From C1 to C2+ products. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2023.215057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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8
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Zhang Y, Liu Y, Zhang T, Gong X, Wang Z, Liu Y, Wang P, Cheng H, Dai Y, Huang B, Zheng Z. In Situ Monitoring of the Spatial Distribution of Oxygen Vacancies and Enhanced Photocatalytic Performance at the Single-Particle Level. NANO LETTERS 2023; 23:1244-1251. [PMID: 36757119 DOI: 10.1021/acs.nanolett.2c04313] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Oxygen vacancies (OVs) on specific sites/facets can strengthen the interaction between reactants and oxide surfaces, facilitating interfacial charge transfer. However, precise monitoring of the spatial distribution of OVs remains a grand challenge. We report here that a single-particle spectroscopy technique addresses this challenge by establishing a positive correlation relationship between defects and bound exciton luminescence across different facets. Taking monoclinic BiVO4 as an example, on the basis of theoretical guidance, by in situ tracking the PL lifetimes and PL spectra of different facets on single particles before and after hydrogen treatment, we provide evidence that the PL emission originates from the OV state and determine that OVs is more inclined to be generated at the {010} facets. This anisotropic defect engineering significantly prolongs the lifetime of carriers and accelerates the activation of molecular oxygen. These findings not only verify preference rules of OVs in metal oxides but also provide a time-space-resolved monitoring method.
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Affiliation(s)
- Yujia Zhang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, People's Republic of China
| | - Yan Liu
- Center for Optics Research and Engineering, Shandong University, Qingdao, 266237, People's Republic of Chin
| | - Ting Zhang
- School of Physics, Shandong University, Jinan 250100, People's Republic of China
| | - Xueqin Gong
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, People's Republic of China
| | - Zeyan Wang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, People's Republic of China
| | - Yuanyuan Liu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, People's Republic of China
| | - Peng Wang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, People's Republic of China
| | - Hefeng Cheng
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, People's Republic of China
| | - Ying Dai
- School of Physics, Shandong University, Jinan 250100, People's Republic of China
| | - Baibiao Huang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, People's Republic of China
| | - Zhaoke Zheng
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, People's Republic of China
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A Novel Dual Z-Scheme Visible Light Catalyst PCN/BiOCl/CdS with Oxygen Vacancies for Benzylamine Oxidative Coupling Reaction. CATALYSIS SURVEYS FROM ASIA 2022. [DOI: 10.1007/s10563-022-09372-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2022]
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10
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Yang R, Liang B, Zheng S, Hu C, Xu Y, Ma Y, Bai Y, Dai K, Tang Y, Zhang C, Chang M. Improving the Surface Oxygen Vacancy Concentration of Bi 2O 4 through the Pretreatment of the NaBiO 3·2H 2O Precursor as a High-Performance Visible Light Photocatalyst. Inorg Chem 2022; 61:14102-14114. [PMID: 36006394 DOI: 10.1021/acs.inorgchem.2c02163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The oxygen-deficient bismuth oxide, Bi2O4, synthesized by a typical hydrothermal method using commercial NaBiO3·2H2O as a raw material only has a relatively low concentration of surface oxygen vacancies (OVs). How to improve the visible light photocatalytic performance of Bi2O4 via tuning its surface OV concentration is still a huge challenge. In this study, improving the surface OVs of Bi2O4 was successfully realized through the pretreatment of commercial NaBiO3·2H2O, including thermal treatment in air and hydrothermal treatment in 10 M NaOH solution, forming NaBiO3·xH2O intermediate products first, and then hydrothermal preparation of Bi2O4 target products using NaBiO3·xH2O instead of commercial NaBiO3·2H2O as the precursor. The enhanced surface OV content not only narrows the band gap of Bi2O4 and thus extends its optical response range but also captures more photoexcited electrons and thus increases the charge carriers' separation efficiency and prolongs the charge carriers' lifetime of Bi2O4. Among the above-mentioned two pretreatment methods, the effects of the hydrothermal pretreatment are superior to those of the thermal treatment, involving the increase of surface OVs, the optical harvesting capacity, and the charge carriers' separation efficiency. Accordingly, Bi2O4 prepared by the hydrothermal pretreatment route exhibits the optimal visible light catalytic performance toward the removal of methyl orange (MO) and phenol due to its most abundant surface OV concentration, which is 2.59 times and 4.26 times higher than that of Bi2O4 synthesized directly by the commercial NaBiO3·2H2O route, respectively. Holes (h+) and superoxide radicals (•O2-) are identified as the main active species, while singlet oxygen (1O2) and hydroxyl radicals (•OH) are verified as the second and third important active species for organic pollutant removal, respectively. This work has developed a novel strategy to promote the catalytic performance of single Bi2O4 induced by the enhanced surface OV concentration through the pretreatment of the precursor, commercial NaBiO3·2H2O.
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Affiliation(s)
- Ruofan Yang
- Jiangxi Key Laboratory of Surface Engineering (School of Materials and Mechanical & Electrical Engineering), Jiangxi Science and Technology Normal University, Nanchang 330013, P. R. China.,Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China
| | - Baiping Liang
- Jiangxi Key Laboratory of Surface Engineering (School of Materials and Mechanical & Electrical Engineering), Jiangxi Science and Technology Normal University, Nanchang 330013, P. R. China
| | - Shizheng Zheng
- Jiangxi Key Laboratory of Surface Engineering (School of Materials and Mechanical & Electrical Engineering), Jiangxi Science and Technology Normal University, Nanchang 330013, P. R. China
| | - Changyuan Hu
- Jiangxi Key Laboratory of Surface Engineering (School of Materials and Mechanical & Electrical Engineering), Jiangxi Science and Technology Normal University, Nanchang 330013, P. R. China
| | - Yajuan Xu
- Institute of Foreign Languages, Jiangxi Science and Technology Normal University, Nanchang 330013, P. R. China
| | - Yanting Ma
- Jiangxi Key Laboratory of Surface Engineering (School of Materials and Mechanical & Electrical Engineering), Jiangxi Science and Technology Normal University, Nanchang 330013, P. R. China
| | - Yangyang Bai
- Jiangxi Key Laboratory of Surface Engineering (School of Materials and Mechanical & Electrical Engineering), Jiangxi Science and Technology Normal University, Nanchang 330013, P. R. China
| | - Kejie Dai
- Jiangxi Key Laboratory of Surface Engineering (School of Materials and Mechanical & Electrical Engineering), Jiangxi Science and Technology Normal University, Nanchang 330013, P. R. China
| | - Yan Tang
- Jiangxi Key Laboratory of Surface Engineering (School of Materials and Mechanical & Electrical Engineering), Jiangxi Science and Technology Normal University, Nanchang 330013, P. R. China
| | - Cuiqing Zhang
- School of Pharmacy, Jiangxi Science and Technology Normal University, Nanchang 330013, P. R. China
| | - Miao Chang
- Jiangxi Key Laboratory of Surface Engineering (School of Materials and Mechanical & Electrical Engineering), Jiangxi Science and Technology Normal University, Nanchang 330013, P. R. China
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11
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Qu W, Tang Z, Liu W, Liao Y, Huang Y, Xia D, Lian Q, Tian S, He C, Shu D. Self-Accelerating Interfacial Catalytic Elimination of Gaseous Sulfur-Containing Volatile Organic Compounds as Microbubbles in a Facet-Engineered Three-Dimensional BiOCl Sponge Fenton-Like Process. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:11657-11669. [PMID: 35881963 DOI: 10.1021/acs.est.2c01798] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The elimination of gaseous sulfur-containing volatile organic compounds (S-VOCs) by a microbubble-assisted Fenton-like process is an innovative strategy. Herein, we established a microbubble-assisted Fenton-like process to eliminate malodorous microbubble CH3SH as representative gaseous S-VOCs, in which BiOCl nanosheets loaded on a three-dimensional sponge were exposed to (001) or (010) facets and induced Fenton-like interface reactions. Intriguingly, the microbubble-assisted Fenton-like process significantly removed 99.9% of CH3SH, higher than that of the macrobubble-assisted Fenton-like process (39.0%). The self-accelerating interfacial catalytic mechanism was in-depth identified by in situ ATR-FTIR, PTR-TOF-MS, EPR, and DFT computational study. The extraordinary elimination performance of microbubble-assisted Fenton-like process lies in the enhancing dissolution/mass transfer of gaseous CH3SH in the gas/liquid phase and the tight contact between CH3SH-microbubbles and 3D-BiOCl sponge due to the low rising velocity (0.13 mm s-1) and negative charge (-45.53 mV) of CH3SH-microbubbles, as well as the effective generation of 1O2 by activating the enriched dissolved oxygen in CH3SH-microbubble via effective electron-polarized sites on 3D-BiOCl sponge. Furthermore, CH3SH-microbubbles transferred electrons to H2O2 through electron-rich oxygen vacancy centers of the 3D-BiOCl sponge to generate more •OH, thus achieving excellent elimination performance. Overall, this study demonstrates the enhanced self-accelerating interfacial catalytic elimination by S-VOC microbubble and provides the underlying mechanisms.
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Affiliation(s)
- Wei Qu
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Zhuoyun Tang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Wei Liu
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Yuhong Liao
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Yajing Huang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Dehua Xia
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, China
| | - Qiyu Lian
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Shuanghong Tian
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, China
| | - Chun He
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, China
| | - Dong Shu
- Key Lab of Technology on Electrochemical Energy Storage and Power Generation in Guangdong Universities, School of Chemistry and Environment, South China Normal University, Guangzhou 510006, China
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12
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Hu L, Ding Z, Yan F, Li K, Feng L, Wang H. Construction of Hexagonal Prism-like Defective BiOCL Hierarchitecture for Photocatalytic Degradation of Tetracycline Hydrochloride. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2700. [PMID: 35957131 PMCID: PMC9370337 DOI: 10.3390/nano12152700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/01/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
Oxygen vacancy manipulation and hierarchical morphology construction in oxygen-containing semiconductors have been demonstrated to be effective strategies for developing high efficiency photocatalysts. In most studies of bismuth-based photocatalysts, hierarchical morphology and crystal defects are achieved separately, so the catalysts are not able to benefit from both features. Herein, using boiling ethylene glycol as the treatment solution, we developed an etching-recrystallization method for the fabrication of 3D hierarchical defective BiOCl at ambient pressure. The target hierarchical 3D-BiOCl is composed of self-assembled BiOCl nanosheets, which exhibit a hexagonal prism-like morphology on a micron scale, while simultaneously containing numerous oxygen vacancies within the crystal structure. Consequently, the target catalyst was endowed with a higher specific surface area, greater light harvesting capability, as well as more efficient separation and transfer of photo-excited charges than pristine BiOCl. As a result, 3D-BiOCl presented an impressive photocatalytic activity for the degradation of tetracycline hydrochloride in both visible light and natural white light emitting diode (LED) irradiation. Moreover, an extraordinary recycling property was demonstrated for the target photocatalyst thanks to its hierarchical structure. This study outlines a simple and energy-efficient approach for producing high-performance hierarchically defective BiOCl, which may also open up new possibilities for the morphological and crystal structural defect regulation of other Bi-based photocatalysts.
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Affiliation(s)
- Lijun Hu
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
- Hunan Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang 421001, China
| | - Zhichao Ding
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
- Hunan Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang 421001, China
| | - Fei Yan
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
- Hunan Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang 421001, China
| | - Kuan Li
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
- Hunan Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang 421001, China
| | - Li Feng
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Hongqing Wang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
- Hunan Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang 421001, China
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13
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Vinoth S, Ong WJ, Pandikumar A. Defect engineering of BiOX (X = Cl, Br, I) based photocatalysts for energy and environmental applications: Current progress and future perspectives. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214541] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Wang X, Li X, Wang X, Zhao M, Chen W, Wu H, Jia J. Immobilization of bismuth oxychloride on cellulose nanocrystal for sunlight-driven superior photosensitized degradation. Int J Biol Macromol 2022; 206:398-408. [PMID: 35245571 DOI: 10.1016/j.ijbiomac.2022.02.159] [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: 12/13/2021] [Revised: 01/29/2022] [Accepted: 02/25/2022] [Indexed: 11/16/2022]
Abstract
Semiconductor photocatalysis is considered to be an important green technology for sewage treatment. However, most of the pollutant degradation studies used simulated sunlight in a laboratory, which has great energy cost with limited applications in industry. Herein, cellulose nanocrystal (CNC) with rich hydroxyl groups and high specific surface area are used as the matrix to construct composites with BiOCl, which improves the dispersibility with an increased number of oxygen vacancies on BiOCl. The obtained composite photocatalyst, i.e., BiOCl/CNC, showed an excellent performance with good recyclability. Within 30 min, 99% of RhB (20 mg/L) was degraded under simulated visible light and 94% under natural sunlight. The reaction system maintains excellent catalytic performance after being scaled up by 10×. Compared with reported BiOCl-based composites in literature, BiOCl/CNC had excellent photocatalytic activity for the RhB degradation with good recyclability. Subsequently, by identifying the active species, a reasonable photocatalytic mechanism was proposed for RhB degradation. This work developed an economical and effective visible light sensitive photocatalyst for the treatment of organic dyes in water.
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Affiliation(s)
- Xiaoxia Wang
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, School of Chemical and Material Science, Shanxi Normal University, Taiyuan 030006, PR China; Department of Chemistry, Changzhi University, Changzhi 046011, PR China
| | - Xueting Li
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, School of Chemical and Material Science, Shanxi Normal University, Taiyuan 030006, PR China
| | - Xinyu Wang
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, School of Chemical and Material Science, Shanxi Normal University, Taiyuan 030006, PR China
| | - Man Zhao
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, School of Chemical and Material Science, Shanxi Normal University, Taiyuan 030006, PR China
| | - Wenwen Chen
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, School of Chemical and Material Science, Shanxi Normal University, Taiyuan 030006, PR China.
| | - Haishun Wu
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, School of Chemical and Material Science, Shanxi Normal University, Taiyuan 030006, PR China
| | - Jianfeng Jia
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, School of Chemical and Material Science, Shanxi Normal University, Taiyuan 030006, PR China.
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15
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Wang X, Li X, Tian B, Xiao H, Chen W, Wu H, Jia J. Immobilization of bismuth oxychloride on cellulose nanocrystal for photocatalytic sulfonylation of arylacetylenic acids with sodium sulfinates under visible light. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.103708] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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16
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Sun W, Xiang Y, Jiang Z, Wang S, Yang N, Jin S, Sun L, Teng H, Chen H. Designed polymeric conjugation motivates tunable activation of molecular oxygen in heterogeneous organic photosynthesis. Sci Bull (Beijing) 2022; 67:61-70. [PMID: 36545961 DOI: 10.1016/j.scib.2021.07.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 06/15/2021] [Accepted: 07/05/2021] [Indexed: 01/06/2023]
Abstract
Photocatalytic oxidative organic reactions are important synthetic transformations, and research on reaction selectivity by reactive oxygen species (ROS) is significant. To date, however, there has rarely been any focus on the directed generation of ROSs. Herein, we report the first identification of tunable molecular oxygen activation induced by polymeric conjugation in nonmetallic conjugated microporous polymers (CMP). The conjugation between these can be achieved by the introduction of alkynyl groups. CMP-A with an alkynyl bridge facilitates the intramolecular charge mobility while CMP-D, lacking an alkynyl group enhances the photoexcited carrier build-up on the surface from diffusion. These different processes dominate the directed ROS generation of the superoxide radical (O2-) and singlet oxygen (1O2), respectively. This theory is substantiated by the different performances of these CMPs in the aerobic oxidation of sulfides and the dehydrogenative coupling of amines, and could provide insight into the rational design of CMPs for various heterogeneous organic photosynthesis.
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Affiliation(s)
- Wenhao Sun
- College of Science, Huazhong Agricultural University, Wuhan 430070, China
| | - Yonggang Xiang
- College of Science, Huazhong Agricultural University, Wuhan 430070, China
| | - Zhihui Jiang
- College of Science, Huazhong Agricultural University, Wuhan 430070, China; Key Laboratory of Environment Correlative Dietology (Ministry of Education), Huazhong Agricultural University, Wuhan 430070, China
| | - Shengyao Wang
- College of Science, Huazhong Agricultural University, Wuhan 430070, China.
| | - Nan Yang
- College of Science, Huazhong Agricultural University, Wuhan 430070, China
| | - Shangbin Jin
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Linhao Sun
- College of Science, Huazhong Agricultural University, Wuhan 430070, China
| | - Huailong Teng
- College of Science, Huazhong Agricultural University, Wuhan 430070, China; Key Laboratory of Environment Correlative Dietology (Ministry of Education), Huazhong Agricultural University, Wuhan 430070, China.
| | - Hao Chen
- College of Science, Huazhong Agricultural University, Wuhan 430070, China; Key Laboratory of Environment Correlative Dietology (Ministry of Education), Huazhong Agricultural University, Wuhan 430070, China.
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17
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S-Scheme photocatalyst TaON/Bi2WO6 nanofibers with oxygen vacancies for efficient abatement of antibiotics and Cr(VI): Intermediate eco-toxicity analysis and mechanistic insights. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(22)64106-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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18
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Wang M, Wang B, Xie B, Li N, Xu Q, Li H, He J, Chen D, Lu J. Ultrathin Two-Dimensional BiOCl with Oxygen Vacancies Anchored in Three-Dimensional Porous g-C3N4 to Construct a Hierarchical Z-Scheme Heterojunction for the Photocatalytic Degradation of NO. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c04155] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Mengmeng Wang
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, P. R. China
| | - Beibei Wang
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, P. R. China
| | - Bingke Xie
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, P. R. China
| | - Najun Li
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, P. R. China
| | - Qingfeng Xu
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, P. R. China
| | - Hua Li
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, P. R. China
| | - Jinghui He
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, P. R. China
| | - Dongyun Chen
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, P. R. China
| | - Jianmei Lu
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren’ai Road, Suzhou 215123, P. R. China
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19
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Chen X, Liu G, Xu X, Wang B, Sun SX, Xia J, Li H. Oxygen vacancies mediated Bi 12O 17Cl 2 ultrathin nanobelts: Boosting molecular oxygen activation for efficient organic pollutants degradation. J Colloid Interface Sci 2021; 609:23-32. [PMID: 34890949 DOI: 10.1016/j.jcis.2021.11.135] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/21/2021] [Accepted: 11/22/2021] [Indexed: 11/28/2022]
Abstract
Photocatalysis technology has been considered as a sustainable and promising strategy for pollutant degradation. However, the photocatalytic activity is limited by the unsatisfactory carrier separation efficiency of photocatalysts and insufficient reactive oxygen species. Herein, the oxygen vacancies (OVs) mediated Bi12O17Cl2 ultra-thin nanobelt (ROV Bi12O17Cl2) was fabricated via solvothermal method. The surface oxygen vacancies can act as the 'electron sink' and boost charge separation. Thus, the ROV Bi12O17Cl2 shows superior photocatalytic performance, which is 2.72 and 4.52 times compared to deficient oxygen vacancies Bi12O17Cl2 (DOV Bi12O17Cl2) and Bulk Bi12O17Cl2 for colored organic pollutants degradation, respectively. Besides, the ROV Bi12O17Cl2 also displays excellent removal efficiency for refractory antibiotics, roughly 4.00 and 7.45 times compared to that of DOV Bi12O17Cl2 and Bulk Bi12O17Cl2, respectively. Furthermore, the intermediates for photocatalytic degradation were determined through HPLC-MS and the possible degradation paths of the target molecules were inferred. Capture experiment and ESR spectra confirmed that the •O2- played a vital role for the organic pollutant degradation. This work provides a new perspective for the design of advanced semiconductors for organic pollutants degradation.
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Affiliation(s)
- Xin Chen
- School of Chemistry and Chemical Engineering, Institute for Energy Research, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, PR China
| | - Gaopeng Liu
- School of Chemistry and Chemical Engineering, Institute for Energy Research, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, PR China
| | - Xinyuan Xu
- School of Chemistry and Chemical Engineering, Institute for Energy Research, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, PR China
| | - Bin Wang
- School of Chemistry and Chemical Engineering, Institute for Energy Research, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, PR China
| | - Shi-Xin Sun
- College of Chemical and Environmental Engineering, Yancheng Teachers University, Yancheng 224002, PR China.
| | - Jiexiang Xia
- School of Chemistry and Chemical Engineering, Institute for Energy Research, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, PR China.
| | - Huaming Li
- School of Chemistry and Chemical Engineering, Institute for Energy Research, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, PR China.
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20
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Facile synthesis of BiOCl single-crystal photocatalyst with high exposed (0 0 1) facets and its application in photocatalytic degradation. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.109038] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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21
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Xu H, Yan C, Li R, Song L, Ouyang S. Synergetic modulation of surface alkali and oxygen vacancy over SrTiO 3for the CO 2photodissociation. NANOTECHNOLOGY 2021; 33:085401. [PMID: 34763329 DOI: 10.1088/1361-6528/ac38e8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 11/10/2021] [Indexed: 06/13/2023]
Abstract
Photochemical conversion of CO2into solar fuels is one of the promising strategies to reducing the CO2emission and developing a sustainable carbon economy. For the more efficient utilization of solar spectrum, several approaches were adopted to pursue the visible-light-driven SrTiO3. Herein, oxygen vacancy was introduced over the commercial SrTiO3(SrTiO3-x) via the NaBH4thermal treatment, to extend the light absorption and promote the CO2adsorption over SrTiO3. Due to the mid-gap states resulted from the oxygen deficiency, combined with the intrinsic energy level of SrTiO3, the SrTiO3-xcatalyst exhibited excellent CO productivity (4.1 μmolˑg-1ˑh-1) and stability from the CO2photodissociation under the visible-light irradiation (λ > 400 nm). Then, surface alkalization over SrTiO3-x(OH-SrTiO3-x) was carried out to further enhance the CO2adsorption/activation over the surface base sites and provide the OH ions as hole acceptor, the surface alkali OH connected with Sr site of SrTiO3could also weaken the Sr-O bonding thus facilitate the regeneration of surface oxygen vacancy under the light illumination, thus resulting in 1.5 times higher CO productivity additionally. This study demonstrates that the synergetic modulation of alkali OH and oxygen vacancy over SrTiO3could largely promote the CO2photodissociation activity.
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Affiliation(s)
- Hua Xu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, 206 Guanggu 1st Road, Wuhan 430205, People's Republic of China
| | - Chunlei Yan
- TJU-NIMS International Collaboration Laboratory, School of Materials Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin 300072, People's Republic of China
| | - Ruizhe Li
- College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, People's Republic of China
| | - Lizhu Song
- TJU-NIMS International Collaboration Laboratory, School of Materials Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin 300072, People's Republic of China
| | - Shuxin Ouyang
- College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, People's Republic of China
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22
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Shi Y, Zhan G, Li H, Wang X, Liu X, Shi L, Wei K, Ling C, Li Z, Wang H, Mao C, Liu X, Zhang L. Simultaneous Manipulation of Bulk Excitons and Surface Defects for Ultrastable and Highly Selective CO 2 Photoreduction. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2100143. [PMID: 34331321 DOI: 10.1002/adma.202100143] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 05/24/2021] [Indexed: 06/13/2023]
Abstract
The objective of photocatalytic CO2 reduction (PCR) is to achieve high selectivity for a single energy-bearing product with high efficiency and stability. The bulk configuration usually determines charge carrier kinetics, whereas surface atomic arrangement defines the PCR thermodynamic pathway. Concurrent engineering of bulk and surface structures is therefore crucial for achieving the goal of PCR. Herein, an ultrastable and highly selective PCR using homogeneously doped BiOCl nanosheets synthesized via an inventive molten strategy is presented. With B2 O3 as both the molten salt and doping precursor, this new doping approach ensures boron (B) doping from the surface into the bulk with dual functionalities. Bulk B doping mitigates strong excitonic effects confined in 2D BiOCl by significantly reducing exciton binding energies, whereas surface-doped B atoms reconstruct the BiOCl surface by extracting lattice hydroxyl groups, resulting in intimate B-oxygen vacancy (B-OV) associates. These exclusive B-OV associates enable spontaneous CO2 activation, suppress competitive hydrogen evolution and promote the proton-coupled electron transfer step by stabilizing *COOH for selective CO generation. As a result, the homogeneous B-doped BiOCl nanosheets exhibit 98% selectivity for CO2 -to-CO reduction under visible light, with an impressive rate of 83.64 µmol g-1 h-1 and ultrastability for long-term testing of 120 h.
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Affiliation(s)
- Yanbiao Shi
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China
| | - Guangming Zhan
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China
| | - Hao Li
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China
| | - Xiaobing Wang
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China
| | - Xiufan Liu
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China
| | - Lujia Shi
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China
| | - Kai Wei
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China
| | - Cancan Ling
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China
| | - Zhilin Li
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China
| | - Hao Wang
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China
| | - Chengliang Mao
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China
| | - Xiao Liu
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China
| | - Lizhi Zhang
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan, 430079, P. R. China
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23
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Qi R, Liu J, Yuan H, Yu Y. Sulfur-Doped BiOCl with Enhanced Light Absorption and Photocatalytic Water Oxidation Activity. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2221. [PMID: 34578537 PMCID: PMC8472310 DOI: 10.3390/nano11092221] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 08/23/2021] [Accepted: 08/26/2021] [Indexed: 11/17/2022]
Abstract
Photocatalysis is a powerful strategy to address energy and environmental concerns. Sulfur-doped BiOCl was prepared through a facial hydrothermal method to improve the photocatalytic performance. Experimental results and theoretical calculations demonstrated that the band structure of the sulfur-doped BiOCl was optimally regulated and the light absorption range was expanded. It showed excellent visible-light photocatalytic water oxidation properties with a rate of 141.7 μmol h-1 g-1 (almost 44 times of that of the commercial BiOCl) with Pt as co-catalyst.
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Affiliation(s)
- Ruilian Qi
- College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, China;
| | - Jian Liu
- Institute of Chemistry, Chinese Academy of Sciences, Beijing 100090, China;
| | - Huanxiang Yuan
- College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, China;
| | - Yu Yu
- School of Science, Beijing Jiaotong University, Beijing 100044, China
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24
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Xiong J, Li Y, Lu S, Guo W, Zou J, Fang Z. Controllable sulphur vacancies confined in nanoporous ZnS nanoplates for visible-light photocatalytic hydrogen evolution. Chem Commun (Camb) 2021; 57:8186-8189. [PMID: 34313281 DOI: 10.1039/d1cc02593g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Controllable sulphur vacancies (Sv) confined in nanoporous ZnS nanoplates (Sv-ZnS) were prepared successfully via rapid heat treatment of ZnS(en)0.5 nanoplates. Sv with controllable concentrations originating from the in situ doping of N atoms endowed Sv-ZnS with a visible-light photocatalytic H2 production activity, having a positive linear correlation with Sv concentration.
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Affiliation(s)
- Jinhua Xiong
- Fujian Provincial Key Laboratory of Clean Energy Materials, Longyan University, Longyan 364000, P. R. China.
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25
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Li H, Ai Z, Zhang L. Surface structure-dependent photocatalytic O 2 activation for pollutant removal with bismuth oxyhalides. Chem Commun (Camb) 2020; 56:15282-15296. [PMID: 33165493 DOI: 10.1039/d0cc05449f] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The purification of water and air by semiconductor photocatalysis is a rapidly growing area for academic research and industrial innovation, featured with ambient removal of organic or inorganic pollutants by using solar light as the energy source and atmospheric O2 as the green oxidant. Both charge transfer and energy transfer from excited photocatalysts can overcome the spin-forbidden nature of O2. Layered bismuth oxyhalides are a new group of two-dimensional photocatalysts with an appealing geometric and surface structure that allows the dynamic and selective tuning of O2 activation at the surface molecular level. In this Feature Article, we specifically summarize our recent progress in selective O2 activation by engineering surface structures of bismuth oxyhalides. Then, we demonstrate selective photocatalytic O2 activation of bismuth oxyhalides for environmental control, including water decontamination, volatile organic compound oxidation and nitrogen oxide removal, as well as selective catalytic oxidations. Challenges and opportunities regarding the design of photocatalysts with satisfactory performance for potential environmental control applications are also presented.
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Affiliation(s)
- Hao Li
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, China.
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