1
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Cao G, Liu Y, Hu J, Qu J, Zhang Z, Xiong X, Sun W, Yang X, Li CM. Alternating 3 rd- to 2 nd-Order Charge Reaction Kinetics on Bismuth Vanadate Photoanodes with Ultrathin Bismuth Metal-Organic-Frameworks. Chemphyschem 2024; 25:e202400141. [PMID: 38462507 DOI: 10.1002/cphc.202400141] [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: 02/07/2024] [Revised: 03/09/2024] [Accepted: 03/10/2024] [Indexed: 03/12/2024]
Abstract
The most challenging obstacle for photocatalysts to efficiently harvest solar energy is the sluggish surface redox reaction (e. g., oxygen evolution reaction, OER) kinetics, which is believed to originate from interface catalysis rather than the semiconductor photophysics. In this work, we developed a light-modulated transient photocurrent (LMTPC) method for investigating surface charge accumulation and reaction on the W-doped bismuth vanadate (W : BiVO4) photoanodes during photoelectrochemical water oxidation. Under illuminating conditions, the steady photocurrent corresponds to the charge transfer rate/kinetics, while the integration of photocurrent (I~t) spikes during the dark period is regarded as the charge density under illumination. Quantitative analysis of the surface hole densities and photocurrents at 0.6 V vs. reversible hydrogen electrode results in an interesting rate-law kinetics switch: a 3rd-order charge reaction behavior appeared on W : BiVO4, but a 2nd-order charge reaction occurred on W : BiVO4 surface modified with ultrathin Bi metal-organic-framework (Bi-MOF). Consequently, the photocurrent for water oxidation on W : BiVO4/Bi-MOF displayed a 50 % increment. The reaction kinetics alternation with new interface reconstruction is proposed for new mechanism understanding and/or high-performance photocatalytic applications.
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Affiliation(s)
- Guangming Cao
- Institute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, No. 99 Xuefu Rd., Suzhou, Jiangsu Province, 215009, P.R. China
- Key Laboratory of Laser Technology and Optoelectronic Functional Materials of Hainan Province, Key Laboratory of Functional Materials and Photoelectrochemistry of Haikou, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkun South Rd., Haikou, Hainan Province, 571158, P.R. China
| | - Yanjie Liu
- Institute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, No. 99 Xuefu Rd., Suzhou, Jiangsu Province, 215009, P.R. China
| | - Jundie Hu
- Institute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, No. 99 Xuefu Rd., Suzhou, Jiangsu Province, 215009, P.R. China
| | - Jiafu Qu
- Institute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, No. 99 Xuefu Rd., Suzhou, Jiangsu Province, 215009, P.R. China
| | - Zhichao Zhang
- Institute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, No. 99 Xuefu Rd., Suzhou, Jiangsu Province, 215009, P.R. China
| | - Xianqiang Xiong
- School of Pharmaceutical and Materials Engineering, Taizhou University No.1139, Shifu Blvd, Jiao Jiang, Taizhou, Zhejiang Province, 318000, P.R. China
| | - Wei Sun
- Key Laboratory of Laser Technology and Optoelectronic Functional Materials of Hainan Province, Key Laboratory of Functional Materials and Photoelectrochemistry of Haikou, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkun South Rd., Haikou, Hainan Province, 571158, P.R. China
| | - Xiaogang Yang
- Institute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, No. 99 Xuefu Rd., Suzhou, Jiangsu Province, 215009, P.R. China
| | - Chang Ming Li
- Institute of Materials Science and Devices, School of Material Science and Engineering, Suzhou University of Science and Technology, No. 99 Xuefu Rd., Suzhou, Jiangsu Province, 215009, P.R. China
- Key Laboratory of Laser Technology and Optoelectronic Functional Materials of Hainan Province, Key Laboratory of Functional Materials and Photoelectrochemistry of Haikou, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkun South Rd., Haikou, Hainan Province, 571158, P.R. China
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2
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Zhang Z, Xiang Y, Zhu Z. Electronic Characteristics, Stability and Water Oxidation Selectivity of High-Index BiVO 4 Facets for Photocatalytic Application: A First Principle Study. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2023. [PMID: 37446539 DOI: 10.3390/nano13132023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 06/26/2023] [Accepted: 07/04/2023] [Indexed: 07/15/2023]
Abstract
Some high-index facets of BiVO4, such as (012), (210), (115), (511), (121), (132) and (231), exhibit much better photocatalytic performance than conventional (010) and (110) surfaces for water splitting. However, the detailed mechanisms and stability of improved photocatalytic performance for these high-index BiVO4 surfaces are still not clear, which is important for designing photocatalysts with high efficiency. Here, based on first principle calculation, we carried out a systematic theoretical research on BiVO4 with different surfaces, especially high-index facets. The results show that all of the high-index facets in our calculated systems show an n-type behavior, and the band edge positions indicate that all of the high-index facets have enough ability to produce O2 without external bias. Electronic structures, band alignments and formation enthalpy indicate that (012), (115) and (132) could be equivalent to (210), (511) and (231), respectively, in the calculation. Oxidation and reduction potential show that only (132)/(231) is stable without strongly oxidative conditions, and the Gibbs free energy indicates that (012)/(210), (115)/(511), (121) and (132)/(231) have lower overpotential than (010) and (110). Our calculation is able to unveil insights into the effects of the surface, including electronic structures, overpotential and stability during the reaction process.
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Affiliation(s)
- Zhiyuan Zhang
- College of Advanced Interdisciplinary Studies & Hunan Provincial Key Laboratory of Novel Nano Optoelectronic Information Materials and Devices, National University of Defense Technology, 410073 Changsha, China
- Nanhu Laser Laboratory, National University of Defense Technology, Changsha 410073, China
| | - Yuqi Xiang
- College of Advanced Interdisciplinary Studies & Hunan Provincial Key Laboratory of Novel Nano Optoelectronic Information Materials and Devices, National University of Defense Technology, 410073 Changsha, China
- Nanhu Laser Laboratory, National University of Defense Technology, Changsha 410073, China
| | - Zhihong Zhu
- College of Advanced Interdisciplinary Studies & Hunan Provincial Key Laboratory of Novel Nano Optoelectronic Information Materials and Devices, National University of Defense Technology, 410073 Changsha, China
- Nanhu Laser Laboratory, National University of Defense Technology, Changsha 410073, China
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3
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Zhang P, Yang X, Du S, Yin L, Wang J, Liu P, Hou W. Insight into the Crystal Facet Effect of {101} and {100} Facets of CeVO 4 in the Photochemical Property and Photocatalysis. J Phys Chem Lett 2022; 13:10432-10438. [PMID: 36326452 DOI: 10.1021/acs.jpclett.2c01840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
To investigate the photochemical property of specific crystal facets, two well-defined CeVO4 dodecahedrons with exposed {101} and {100} facets are prepared, which have distinguishing appearances and unequal {101}/{100} area ratios (A{101}/A{100}), i.e., compressed dodecahedra (CeVO4 CD, A{101}/A{100} ≈ 1) and elongated dodecahedra (CeVO4 ED, A{101}/A{100} ≈ 0.3). During the visible-light-irradiated process, the {101} and {100} facets are certified to selectively deposit photogenerated holes (h+) and electrons (e-), thus exhibiting the photooxidability and photoreducibility, respectively. Meanwhile, a surface heterojunction could form at the adjacent facet interface and facilitate the spatial separation of carriers. Benefiting from the large exposure extent of the {101} facet and the rational A{101}/A{100} (∼1), the CeVO4 CD shows a superior photocatalytic performance for the degradation of tetracycline to the CeVO4 ED. Finally, simulation calculations reveal that the energy deviations of the valence band (VB) and conduction band (CB) between CeVO4{101} and CeVO4{100} impel the photogenerated h+ and e- to transfer in opposite directions, resulting in the facet-dependent photoactivity of the CeVO4 dodecahedron.
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Affiliation(s)
- Peng Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Environmental Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Xiaoyan Yang
- School of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Shiwen Du
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Liangke Yin
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Environmental Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Jiaren Wang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Environmental Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Peng Liu
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Environmental Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Wenhua Hou
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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4
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Pastor E, Montañés L, Gutiérrez-Blanco A, Hegner FS, Mesa CA, López N, Giménez S. The role of crystal facets and disorder on photo-electrosynthesis. NANOSCALE 2022; 14:15596-15606. [PMID: 36148901 DOI: 10.1039/d2nr03609f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Photoelectrochemistry has the potential to play a crucial role in the storage of solar energy and the realisation of a circular economy. From a chemical viewpoint, achieving high conversion efficiencies requires subtle control of the catalyst surface and its interaction with the electrolyte. Traditionally, such control has been hard to achieve in the complex multinary oxides used in PEC devices and consequently the mechanisms by which surface exposed facets influence light-driven catalysts are poorly understood. Yet, this understanding is critical to further improve conversion yields and fine-tune reaction selectivities. Here, we review the impact that crystal facets and disorder have on photoelectrochemical reactivity. In particular, we discuss how the crystal orientation influences the energetics of the surface, the existence of defects and the transport of reactive charges, ultimately dictating the PEC activity. Moreover, we evaluate how facet stability dictates the tendency of the solid to undergo reconstructions during catalytic processes and highlight the experimental and computational challenges that must be overcome to characterise the role of the exposed facets and disorder in catalytic performance.
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Affiliation(s)
- Ernest Pastor
- Institute of Advanced Materials (INAM), Universitat Jaume I, Avenida de Vicent Sos Baynat, s/n 12006, Castelló, Spain.
| | - Laura Montañés
- Institute of Advanced Materials (INAM), Universitat Jaume I, Avenida de Vicent Sos Baynat, s/n 12006, Castelló, Spain.
| | - Ana Gutiérrez-Blanco
- Institute of Advanced Materials (INAM), Universitat Jaume I, Avenida de Vicent Sos Baynat, s/n 12006, Castelló, Spain.
| | - Franziska S Hegner
- Technical University of Munich, Department of Physics, James-Franck-Str. 1, 85748 Garching, Germany
| | - Camilo A Mesa
- Institute of Advanced Materials (INAM), Universitat Jaume I, Avenida de Vicent Sos Baynat, s/n 12006, Castelló, Spain.
| | - Núria López
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Avinguda Països Catalans 16, 43007 Tarragona, Spain.
| | - Sixto Giménez
- Institute of Advanced Materials (INAM), Universitat Jaume I, Avenida de Vicent Sos Baynat, s/n 12006, Castelló, Spain.
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5
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Zhang Z, Song Y, Xiang Y, Zhu Z. Vacancy defect engineered BiVO 4 with low-index surfaces for photocatalytic application: a first principles study. RSC Adv 2022; 12:31317-31325. [PMID: 36349004 PMCID: PMC9623612 DOI: 10.1039/d2ra04890f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 10/18/2022] [Indexed: 06/16/2023] Open
Abstract
BiVO4 has been widely investigated as a photocatalyst material for water splitting due to its outstanding photocatalytic properties. In order to further improve its photocatalytic efficiency, it is necessary to conduct an in-depth study of improvement strategies, such as defect engineering. By focusing on the (001) and (011) surfaces, we carried out a systematic theoretical research on pristine and defective systems, including Bi, V and O vacancies. Based on density functional theory (DFT), the electronic properties, band alignments and Gibbs free energy of pristine and defective BiVO4 have been analyzed. The electronic structures of the (001) and (011) surfaces show different band gaps, and O vacancies make the BiVO4 become an n-type semiconductor, while Bi and V vacancies tend to form a p-type semiconductor. Moreover, the band edge positions indicate that holes are indeed easily accumulated on the (011) surface while electrons tend to accumulate on (001). However, the (011) surface with Bi and V vacancies does not have enough oxidation potential to oxidize water. The reaction free energy shows that O and Bi vacancies could lower the overpotential to some extent.
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Affiliation(s)
- Zhiyuan Zhang
- College of Advanced Interdisciplinary Studies & Hunan Provincial Key Laboratory of Novel Nano Optoelectronic Information Materials and Devices, National University of Defense Technology 410073 Changsha Hunan P. R. China
| | - Yingchao Song
- College of Advanced Interdisciplinary Studies & Hunan Provincial Key Laboratory of Novel Nano Optoelectronic Information Materials and Devices, National University of Defense Technology 410073 Changsha Hunan P. R. China
| | - Yuqi Xiang
- College of Advanced Interdisciplinary Studies & Hunan Provincial Key Laboratory of Novel Nano Optoelectronic Information Materials and Devices, National University of Defense Technology 410073 Changsha Hunan P. R. China
| | - Zhihong Zhu
- College of Advanced Interdisciplinary Studies & Hunan Provincial Key Laboratory of Novel Nano Optoelectronic Information Materials and Devices, National University of Defense Technology 410073 Changsha Hunan P. R. China
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6
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Yao X, Zhou J, Liu Z. Study on adsorption of low-concentration methyl mercaptan by starch-based activated carbon. CHEMOSPHERE 2022; 302:134901. [PMID: 35568218 DOI: 10.1016/j.chemosphere.2022.134901] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 05/03/2022] [Accepted: 05/06/2022] [Indexed: 06/15/2023]
Abstract
The development of a low-concentration methyl mercaptan adsorbing material for an efficient decontamination has become a hot research topic. In this study, carbonization activation was employed with starch and urea as carbon and nitrogen sources, respectively, to prepare a type of starch-based activated carbon. Subsequently, the product was used to adsorb low-concentration methyl mercaptan. Based on sorption experiments and molecular simulations, the underlying mechanism of the adsorption effect of the adsorbent's pore structure and surface oxygen- and nitrogen-containing functional groups on methyl mercaptan molecules were discussed. The results indicated that when the methyl mercaptan equilibrium concentration was 0.197 mg/L, the adsorption capacity of SUAC-16-2 for methyl mercaptan was 78.16 mg/g. Its adsorption performance was better than that of its previously reported counterparts. The well-developed microporous structure of SUAC-16-2 promoted the adsorption of methyl mercaptan. In addition, methyl mercaptan molecules could be broken down to produce CH3S- and H+ by the effect of the surface functional groups. Adjacent carbon atoms containing nitrogen and oxygen functional groups could better adsorb CH3S- and H+, and further strengthen the methyl mercaptan adsorption performance of activated carbon. The study could help to develop new technology for treatment of low concentration of methyl mercaptan in the air.
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Affiliation(s)
- Xiaolong Yao
- School of Ecology and Environment, Beijing Technology and Business University, Beijing, 100048, China; State Environmental Protection Key Laboratory of Food Chain Pollution Control, Beijing Technology and Business University, Beijing, 100048, China
| | - Jingya Zhou
- School of Ecology and Environment, Beijing Technology and Business University, Beijing, 100048, China; State Environmental Protection Key Laboratory of Food Chain Pollution Control, Beijing Technology and Business University, Beijing, 100048, China
| | - Zheng Liu
- School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, Guangxi, China.
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7
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Liu T, Liu T, Hussain S. Prediction the photocatalytic water splitting of bismuth vanady1 oxyhalide BiVO3F based on density functional theory. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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8
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Shang FK, Qi MY, Tan CL, Tang ZR, Xu YJ. Nanoscale Assembly of CdS/BiVO 4 Hybrids for Coupling Selective Fine Chemical Synthesis and Hydrogen Production under Visible Light. ACS PHYSICAL CHEMISTRY AU 2022; 2:216-224. [PMID: 36855572 PMCID: PMC9718317 DOI: 10.1021/acsphyschemau.1c00053] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Simultaneously utilizing photogenerated electrons and holes in one photocatalytic system to synthesize value-added chemicals and clean hydrogen (H2) energy meets the development requirements of green chemistry. Herein, we report a binary material of CdS/BiVO4 combining one-dimensional (1D) CdS nanorods (NRs) with two-dimensional (2D) BiVO4 nanosheets (NSs) constructed through a facile electrostatic self-assembly procedure for the selectively photocatalytic oxidation of aromatic alcohols integrated with H2 production, which exhibits significantly enhanced photocatalytic performance. Within 2 h, the conversion of aromatic alcohols over CdS/BiVO4-25 was approximately 9-fold and 40-fold higher than that over pure CdS and BiVO4, respectively. The remarkably improved photoactivity of CdS/BiVO4 hybrids is mainly ascribed to the Z-scheme charge separation mechanism in the 1D/2D heterostructure derived from the interface contact between CdS and BiVO4, which not only facilitates the separation and transfer of charge carriers, but also maintains the strong reducibility of photogenerated electrons and strong oxidizability of photogenerated holes. It is anticipated that this work will further stimulate interest in the rational design of 1D/2D Z-scheme heterostructure photocatalysts for the selective fine chemical synthesis integrated with H2 evolution.
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Cao X, Tan Y, Zheng H, Hu J, Chen X, Chen Z. Effect of cobalt phosphide (CoP) vacancies on its hydrogen evolution activity via water splitting: a theoretical study. Phys Chem Chem Phys 2022; 24:4644-4652. [PMID: 35133361 DOI: 10.1039/d1cp05739a] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Defect engineering plays an important role in improving the performance of catalysts. To clarify the roles of Co and P vacancies in CoP for water splitting, a theoretical study based on density functional theory was carried out in this paper. The geometric and electronic structures, activity and stability of the CoP (101)B surface, CoP (101)B with the Co vacancy (Covac) and the P vacancy (Pvac) are investigated. The results indicate that the CoP (101)B surface with Pvac and Covac can enhance the electron transfer to the surface. The Pvac will upward shift the Co d-band center near the vacancy site, which promotes the adsorption of H on the Co atom. As a result, the bridge Co-Co sites near the vacancy become the active sites for the hydrogen evolution reaction (HER) (ΔGH* = 0.01 eV). The loss of the Co atom also results in an upward shift of its d-band center, which will enhance the H adsorption on the adjacent Co sites. The unevenly distributed electrons due to the presence of vacancies on the surface cause spontaneous dissociation of H2O molecules. Furthermore, the thermodynamic analysis and surface energy find that the CoP (101)B and (101)B facets with Covac and Pvac present good stability. The current work has shed light onto the mechanism of water splitting on the surface of phosphide with vacancies. Our study suggests that engineering vacancies on CoP is a feasible route to improve its catalytic activity.
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Affiliation(s)
- Xiaofei Cao
- School of Chemical Engineering, Northwest University, Xi'an, 710069, P. R. China.
| | - Yuan Tan
- School of Chemical Engineering, Northwest University, Xi'an, 710069, P. R. China.
| | - Huaan Zheng
- School of Chemical Engineering, Northwest University, Xi'an, 710069, P. R. China.
| | - Jun Hu
- School of Chemical Engineering, Northwest University, Xi'an, 710069, P. R. China.
| | - Xi Chen
- Earth Engineering Center, Center for Advanced Materials for Energy and Environment, Department of Earth and Environmental Engineering, Columbia University, New York, NY10027, USA.
| | - Zhong Chen
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore.
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10
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Ding X, Liu X, Cheng J, Kong L, Guo Y. Advanced catalytic CO 2 hydrogenation on Ni/ZrO 2 with light induced oxygen vacancy formation in photothermal conditions at medium-low temperatures. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00439a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Selective CH4 formation from CO2 hydrogenation is an appealing yet challenging sunlight-driven or thermal-driven process due to low solar energy utilization efficiency or high energy input.
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Affiliation(s)
- Xin Ding
- Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, PR China
| | - Xu Liu
- Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, PR China
| | - Jiahui Cheng
- Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, PR China
| | - Lingzhao Kong
- CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, P.R. China
| | - Yang Guo
- Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, PR China
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11
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Liu X, Guo Y, He H, Zheng L, Kong L. A comprehensive study of indole catalytic hydrodenitrogenation under hydrothermal conditions. AIChE J 2021. [DOI: 10.1002/aic.17531] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Xu Liu
- Key Laboratory of Thermo‐Fluid Science and Engineering, Ministry of Education School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an Shaanxi China
| | - Yang Guo
- Key Laboratory of Thermo‐Fluid Science and Engineering, Ministry of Education School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an Shaanxi China
| | - Haoran He
- Department of Chemical Engineering, Pennsylvania State University University Park Pennsylvania USA
| | - Lixiao Zheng
- Key Laboratory of Thermo‐Fluid Science and Engineering, Ministry of Education School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an Shaanxi China
| | - Lingzhao Kong
- CAS Key Laboratory of Low‐Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences Shanghai China
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12
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Zhang L, Jin Z, Tsubaki N. Zeolitic Imidazolate Framework-67-Derived P-Doped Hollow Porous Co 3O 4 as a Photocatalyst for Hydrogen Production from Water. ACS APPLIED MATERIALS & INTERFACES 2021; 13:50996-51007. [PMID: 34677052 DOI: 10.1021/acsami.1c14987] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
As a part of photocatalytic water splitting, the design of low-cost, high-activity catalysts plays an essential role in the development of photocatalytic water splitting. Metal oxides have the advantages of a wide range of sources, many varieties, and easy preparation. Doping engineering on their surface can construct new active sites and adjust their catalytic activity. In this work, a new strategy was developed through anion hybridization to regulate electron delocalization. Using one of the cobalt-based zeolitic imidazole skeletons (ZIF-67) as a precursor material, a two-step calcination method was used to prepare a P-doped Co3O4 mixed anion composite photocatalyst. The hydrogen production rate of P@Co3O4 is 39 times that of ZIF-67 and 6.8 times that of Co3O4. Through density functional theory (DFT) calculations, the electron delocalization state of the sample surface is predicted and the reaction energy barrier is reduced to promote the process of the hydrogen evolution reaction (HER). The special O(δ-)-Co(δ+)-P(δ-) surface bonding state promotes the bridging of isolated electronic states and provides active sites for the adsorption and activation of reaction substrates. The improved electron transport pathway and the synergy between the catalytic sites under the high electron transport rate are the main reasons for the enhanced photocatalytic hydrogen evolution activity. This strategy, including changing the surface bond state and optimizing the structure and composition of the catalyst not only provides a new method for preparing other MOF-derived nanomaterials with porous structures but also inspires the reasonable development of other MOF-based advanced photocatalysts.
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Affiliation(s)
- Lijun Zhang
- Department of Applied Chemistry, Graduate School of Engineering, University of Toyama, Gofuku 3190, Toyama 930-8555, Japan
| | - Zhiliang Jin
- School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan 750021, P. R. China
| | - Noritatsu Tsubaki
- Department of Applied Chemistry, Graduate School of Engineering, University of Toyama, Gofuku 3190, Toyama 930-8555, Japan
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13
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Nikačević P, Hegner FS, Galán-Mascarós JR, López N. Influence of Oxygen Vacancies and Surface Facets on Water Oxidation Selectivity toward Oxygen or Hydrogen Peroxide with BiVO 4. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03256] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Pavle Nikačević
- Institut Català d’Investigació Química (ICIQ), The Barcelona Institute of Science and Technology (BIST), Avda. Països Catalans, 16, 43007 Tarragona, Spain
| | - Franziska S. Hegner
- Institut Català d’Investigació Química (ICIQ), The Barcelona Institute of Science and Technology (BIST), Avda. Països Catalans, 16, 43007 Tarragona, Spain
| | - José Ramón Galán-Mascarós
- Institut Català d’Investigació Química (ICIQ), The Barcelona Institute of Science and Technology (BIST), Avda. Països Catalans, 16, 43007 Tarragona, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluís Companys 23, 08010 Barcelona, Spain
| | - Núria López
- Institut Català d’Investigació Química (ICIQ), The Barcelona Institute of Science and Technology (BIST), Avda. Països Catalans, 16, 43007 Tarragona, Spain
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14
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Yang M, Li Y, Yan T, Jin Z. NiCo LDH in situ derived NiCoP 3D nanoflowers coupled with a Cu 3P p-n heterojunction for efficient hydrogen evolution. NANOSCALE 2021; 13:13858-13872. [PMID: 34477660 DOI: 10.1039/d1nr02798k] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
With the extensive consumption of non-renewable energy sources, storing solar energy as chemical energy has aroused people's wide concern. In this study, we successfully developed a novel Cu3P@NiCoP composite photocatalyst to produce hydrogen by splitting water under visible light irradiation. Both the building of a p-n heterojunction between Cu3P and NiCoP and the three-dimensional nanoflower structure of NiCoP play a vital role in improving the performance of the catalyst. On the one hand, the coupling of Cu3P and NiCoP built a p-n heterojunction at the photocatalyst interface, and the heterojunction could promote the separation efficiency of photogenerated carriers and prolong the life span of charges, therefore enhancing the photocatalytic hydrogen production activity. On the other hand, the excellent catalytic performance of the photocatalyst was benefited by the flower-like microsphere structure of NiCoP, which could provide abundant active sites and a large specific surface area, and promote the adsorption of protons by the photocatalyst. Besides, the phosphating degree of the precursors and the ratio of Cu3P and NiCoP were adjusted to get the best photocatalyst for hydrogen production, and the H2 production of the optimal catalyst could reach 8897.44 μmol h-1 g-1. This work provides a new understanding for the rational design of heterojunction photocatalysts for outstanding hydrogen production performance.
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Affiliation(s)
- Mengxue Yang
- School of Chemistry and Chemical Engineering, Ningxia Key Laboratory of Solar Chemical Conversion Technology, Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, P.R. China.
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15
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Yang M, Wang K, Jin Z. Pyramidal CdS Polyhedron Modified with NiAl LDH to Form S‐scheme Heterojunction for Efficient Photocatalytic Hydrogen Evolution. ChemCatChem 2021. [DOI: 10.1002/cctc.202100499] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Mengxue Yang
- School of Chemistry and Chemical Engineering North Minzu University Yinchuan 750021 P. R. China
- Ningxia Key Laboratory of Solar Chemical Conversion Technology North Minzu University Yinchuan 750021 P. R. China
- Key Laboratory for Chemical Engineering and Technology State Ethnic Affairs Commission North Minzu University Yinchuan 750021 P. R. China
| | - Kai Wang
- School of Chemistry and Chemical Engineering North Minzu University Yinchuan 750021 P. R. China
- Ningxia Key Laboratory of Solar Chemical Conversion Technology North Minzu University Yinchuan 750021 P. R. China
- Key Laboratory for Chemical Engineering and Technology State Ethnic Affairs Commission North Minzu University Yinchuan 750021 P. R. China
| | - Zhiliang Jin
- School of Chemistry and Chemical Engineering North Minzu University Yinchuan 750021 P. R. China
- Ningxia Key Laboratory of Solar Chemical Conversion Technology North Minzu University Yinchuan 750021 P. R. China
- Key Laboratory for Chemical Engineering and Technology State Ethnic Affairs Commission North Minzu University Yinchuan 750021 P. R. China
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16
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Xia Z, Jia X, Ge X, Ren C, Yang Q, Hu J, Chen Z, Han J, Xie G, Chen S, Gao S. Tailoring Electronic Structure and Size of Ultrastable Metalated Metal-Organic Frameworks with Enhanced Electroconductivity for High-Performance Supercapacitors. Angew Chem Int Ed Engl 2021; 60:10228-10238. [PMID: 33474801 DOI: 10.1002/anie.202100123] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Indexed: 11/09/2022]
Abstract
Utilization of metal-organic frameworks (MOFs) as electrodes for energy storage/conversion is challenging because of the low chemical stability and poor electrical conductivity of MOFs in electrolytes. A nanoscale MOF, Co0.24 Ni0.76 -bpa-200, possessing ultrahigh stability with uncommon semiconductor behavior (σ=4.2×10-3 S m-1 ) was fabricated. The MOF comprises a robust hydrophobic paddlewheel and an optimized Co/Ni ratio, with consequent control over MOF size and the degree of conjugation of the coligand. A DFT study revealed that appropriate Ni2+ doping reduces the activation energy of the system, thus providing a higher carrier concentration, and the strongly delocalized N-donor ligand notably increases the metal-ligand orbital overlap to achieve efficient charge migration, leading to continuous through-bond (-CoNi-N-CoNi-)∞ conduction paths. These structural features endow the MOF with a good cycling stability of 86.5 % (10 000 cycles) and a high specific capacitance of 1927.14 F g-1 among pristine MOF-based electrodes.
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Affiliation(s)
- Zhengqiang Xia
- Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi, 710127, China
| | - Xu Jia
- Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi, 710127, China
| | - Xi Ge
- Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi, 710127, China
| | - Chongting Ren
- Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi, 710127, China
| | - Qi Yang
- Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi, 710127, China
| | - Jun Hu
- School of Chemical Engineering, Northwest University, Xi'an, Shaanxi, 710069, China
| | - Zhong Chen
- School of Materials Science and Engineering, Nanyang Technological University, Nanyang Avenue, 639798, Singapore, Singapore
| | - Jing Han
- Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi, 710127, China
| | - Gang Xie
- Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi, 710127, China
| | - Sanping Chen
- Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi, 710127, China
| | - Shengli Gao
- Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, Shaanxi, 710127, China
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17
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Xia Z, Jia X, Ge X, Ren C, Yang Q, Hu J, Chen Z, Han J, Xie G, Chen S, Gao S. Tailoring Electronic Structure and Size of Ultrastable Metalated Metal–Organic Frameworks with Enhanced Electroconductivity for High‐Performance Supercapacitors. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202100123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Zhengqiang Xia
- Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education College of Chemistry and Materials Science Northwest University Xi'an Shaanxi 710127 China
| | - Xu Jia
- Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education College of Chemistry and Materials Science Northwest University Xi'an Shaanxi 710127 China
| | - Xi Ge
- Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education College of Chemistry and Materials Science Northwest University Xi'an Shaanxi 710127 China
| | - Chongting Ren
- Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education College of Chemistry and Materials Science Northwest University Xi'an Shaanxi 710127 China
| | - Qi Yang
- Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education College of Chemistry and Materials Science Northwest University Xi'an Shaanxi 710127 China
| | - Jun Hu
- School of Chemical Engineering Northwest University Xi'an Shaanxi 710069 China
| | - Zhong Chen
- School of Materials Science and Engineering Nanyang Technological University Nanyang Avenue 639798 Singapore Singapore
| | - Jing Han
- Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education College of Chemistry and Materials Science Northwest University Xi'an Shaanxi 710127 China
| | - Gang Xie
- Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education College of Chemistry and Materials Science Northwest University Xi'an Shaanxi 710127 China
| | - Sanping Chen
- Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education College of Chemistry and Materials Science Northwest University Xi'an Shaanxi 710127 China
| | - Shengli Gao
- Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education College of Chemistry and Materials Science Northwest University Xi'an Shaanxi 710127 China
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18
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Wang X, Mu B, Xu J, Wang A. Reversible Thermochromic Superhydrophobic BiVO 4 Hybrid Pigments Coatings with Self-Cleaning Performance and Environmental Stability Based on Kaolinite. ACS APPLIED MATERIALS & INTERFACES 2021; 13:3228-3236. [PMID: 33400493 DOI: 10.1021/acsami.0c20029] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The inferior acid resistance and high cost of BiVO4 pigments seriously hinder their wide applications in some fields. Inspired by the superhydrophobic properties of some plants and insects in nature, the reversible thermochromic superhydrophobic coatings with self-cleaning performance and environmental stability were successfully designed by combining with the surface roughness of kaolinite/BiVO4 hybrid pigments (Kaol/BiVO4-HP) and the modification with hexadecyltrimethoxysilane (HDTMS). When the concentration of HDTMS was 4.58 mmol/L, the yellow superhydrophobic coatings exhibited excellent self-cleaning properties and chemical and environmental stability. Furthermore, the superhydrophobic Kaol/BiVO4-HP coatings exhibited the reversible thermochromic behavior with the change of the external temperatures from room temperature to 270 °C. Interestingly, this facile strategy also can be used to fabricate a series of superhydrophobic clay mineral/BiVO4-HP coatings based on the different clay minerals, and there was no relationship between the superhydrophobic properties of the coatings and the morphologies of clay minerals, which was different from the reported color superhydrophobic coatings prepared with Maya-like blue pigments. Thus, the low-cost and thermochromic superhydrophobic clay mineral/BiVO4-HP coatings presented a promising application in temperature sensors and switches with the excellent weather resistance to record and monitor the temperature changes.
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Affiliation(s)
- Xiaowen Wang
- Key Laboratory of Clay Mineral Applied Research of Gansu Province, Center of Eco-Materials and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
- Center of Xuyi Palygorskite Applied Technology, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Xuyi 211700, P. R. China
| | - Bin Mu
- Key Laboratory of Clay Mineral Applied Research of Gansu Province, Center of Eco-Materials and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
- Center of Xuyi Palygorskite Applied Technology, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Xuyi 211700, P. R. China
| | - Jiang Xu
- Key Laboratory of Clay Mineral Applied Research of Gansu Province, Center of Eco-Materials and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
- Center of Xuyi Palygorskite Applied Technology, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Xuyi 211700, P. R. China
| | - Aiqin Wang
- Key Laboratory of Clay Mineral Applied Research of Gansu Province, Center of Eco-Materials and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
- Center of Xuyi Palygorskite Applied Technology, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Xuyi 211700, P. R. China
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19
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Jin Z, Li H, Gong H, Yang K, Guo Q. Eosin Y-sensitized rose-like MoSx and CeVO4 construct a direct Z-scheme heterojunction for efficient photocatalytic hydrogen evolution. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00683e] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
MoSx/CeVO4 was prepared by a simple hydrothermal method and a direct Z-scheme heterojunction was constructed. The existence of heterojunction provides a special transmission path for electron transfer between two materials.
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Affiliation(s)
- Zhiliang Jin
- School of Chemistry and Chemical Engineering
- Ningxia Key Laboratory of Solar Chemical Conversion Technology
- Key Laboratory for Chemical Engineering and Technology
- State Ethnic Affairs Commission
- North Minzu University
| | - Hongying Li
- School of Chemistry and Chemical Engineering
- Ningxia Key Laboratory of Solar Chemical Conversion Technology
- Key Laboratory for Chemical Engineering and Technology
- State Ethnic Affairs Commission
- North Minzu University
| | - Haiming Gong
- School of Chemistry and Chemical Engineering
- Ningxia Key Laboratory of Solar Chemical Conversion Technology
- Key Laboratory for Chemical Engineering and Technology
- State Ethnic Affairs Commission
- North Minzu University
| | - Kaicheng Yang
- School of Chemistry and Chemical Engineering
- Ningxia Key Laboratory of Solar Chemical Conversion Technology
- Key Laboratory for Chemical Engineering and Technology
- State Ethnic Affairs Commission
- North Minzu University
| | - Qingjie Guo
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering
- Ningxia University
- Yinchuan
- P.R. China
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20
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Yao X, Wang K, Wang W, Zhang T, Wang W, Yang X, Qian F, Li H. Reduction of polycyclic aromatic hydrocarbons (PAHs) emission from household coal combustion using ferroferric oxide as a coal burning additive. CHEMOSPHERE 2020; 252:126489. [PMID: 32213374 DOI: 10.1016/j.chemosphere.2020.126489] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 03/09/2020] [Accepted: 03/12/2020] [Indexed: 06/10/2023]
Abstract
Household coal combustion is identified to be the second largest emission source of polycyclic aromatic hydrocarbons (PAHs) in China. In this study, ferroferric oxide (Fe3O4) was used as a coal burning additive to reduce PAHs emission from coal combustion in a household coal stove. The results showed that Fe3O4 participated in the coal combustion process. The addition of Fe3O4 reduced the release of PAHs during the coal combustion process, and could improve the residence capacity of ash residue to these PAHs. Toxic equivalent quantity (TEQ) of PAHs in flue gas from combustion of coal mixed with Fe3O4 was less than that from the raw coal combustion. For a typical combustion temperature of 850 °C, the TEQ of PAHs for the mixture of coal and 2.0 wt% Fe3O4 decreased 21.98% compared to that for the raw coal. The abundant active surface oxygen species originated from the phase transformation of iron oxides probably accelerated the cracking of PAHs, and hence led to the reduction of PAH emissions and their TEQ. The study could help to develop new technology for reduction of PAHs emission from household coal combustion.
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Affiliation(s)
- Xiaolong Yao
- Department of Environmental Science and Engineering, Beijing Technology and Business University, Beijing, 100048, China
| | - Ke Wang
- Department of Environmental Science and Engineering, Beijing Technology and Business University, Beijing, 100048, China
| | - Wan Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Tingting Zhang
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Wei Wang
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xi'ning, Qinghai Province, 810016, China
| | - Xiaoyang Yang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Feng Qian
- Department of Environmental Science and Engineering, Beijing Technology and Business University, Beijing, 100048, China
| | - Hailong Li
- School of Energy Science and Engineering, Central South University, Changsha, 410083, China.
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21
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Yao X, Liu Y, Li T, Zhang T, Li H, Wang W, Shen X, Qian F, Yao Z. Adsorption behavior of multicomponent volatile organic compounds on a citric acid residue waste-based activated carbon: Experiment and molecular simulation. JOURNAL OF HAZARDOUS MATERIALS 2020; 392:122323. [PMID: 32097857 DOI: 10.1016/j.jhazmat.2020.122323] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 02/12/2020] [Accepted: 02/14/2020] [Indexed: 05/09/2023]
Abstract
A considerable amount of volatile organic compounds (VOCs) is emitted, and a vast amount of citric acid residue (CAR) waste is simultaneously produced during citric acid production. Thus, a suitable method realizing the clean production of citric acid must be developed. This study investigated the adsorption of the multicomponent VOCs in a homemade CAR waste-based activated carbon (CAR-AC). A fixed-bed experimental setup was used to explore the adsorption and desorption of single- and multi-component VOCs. Surface adsorption and diffusion molecular models with different defects were built to study the underlying adsorption and diffusion mechanisms of multicomponent VOCs on CAR-AC. The adsorption amount of ethyl acetate in CAR-AC from multicomponent VOCs was 3.04 and 5.91 times higher than those of acetone and acetaldehyde, respectively, and the interaction energy between ethyl acetate and C surfaces was low at -13.41 kcal/mol. During desorption, the most weakly adsorbed acetaldehyde desorbed from the surface of CAR-AC first, followed by acetone and ethyl acetate. The regeneration efficiencies of acetaldehyde, acetone, and ethyl acetate reached 88.77, 85.55, and 91.46 %, respectively, after four adsorption/desorption cycles. We aimed to provide a new strategy to realize the recycle use of CAR and the clean production of citric acid.
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Affiliation(s)
- Xiaolong Yao
- Department of Environmental Science and Engineering, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing Technology and Business University, Beijing 100048, China
| | - Yao Liu
- Department of Environmental Science and Engineering, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing Technology and Business University, Beijing 100048, China
| | - Tong Li
- Department of Environmental Science and Engineering, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing Technology and Business University, Beijing 100048, China
| | - Tingting Zhang
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Hailong Li
- School of Energy Science and Engineering, Central South University, Changsha, 410083, China
| | - Wei Wang
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xi'ning, Qinghai Province 810016, China
| | - Xianbao Shen
- Department of Environmental Science and Engineering, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing Technology and Business University, Beijing 100048, China
| | - Feng Qian
- Department of Environmental Science and Engineering, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing Technology and Business University, Beijing 100048, China
| | - Zhiliang Yao
- Department of Environmental Science and Engineering, Beijing Technology and Business University, Beijing 100048, China; Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry, Beijing Technology and Business University, Beijing 100048, China.
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22
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Jiang Q, Wang H, Wei X, Wu Y, Gu W, Hu L, Zhu C. Efficient BiVO 4 photoanode decorated with Ti 3C 2T X MXene for enhanced photoelectrochemical sensing of Hg(II) ion. Anal Chim Acta 2020; 1119:11-17. [PMID: 32439049 DOI: 10.1016/j.aca.2020.04.049] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 04/18/2020] [Accepted: 04/21/2020] [Indexed: 10/24/2022]
Abstract
A highly sensitive photoelectrochemical (PEC) sensing platform was constructed for Hg2+ determination based on the Schottky heterojunction between an emerging 2D material Ti3C2TX MXene and a promising semiconductor material BiVO4. Through simply spin-coating the single-layer Ti3C2TX onto the surface of BiVO4 film, the modified electrode exhibited significantly enhanced PEC activity. However, the boost in photocurrent could be noticeably suppressed due to the consumption of hole-scavenging agents (reduced glutathione) by the added Hg2+. Owing to the selective decrease in the photocurrent with the addition of Hg2+, the PEC sensor based on BiVO4/Ti3C2TX displayed a wide linear range from 1 pM to 2 nM with the limit of detection down to 1 pM. Moreover, the PEC sensor also exhibited satisfactory accuracy and repeatability in practical sample water, the Yangtze River water, demonstrating the great potential for monitoring heavy metal ions in natural water resources.
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Affiliation(s)
- Qianqian Jiang
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan, 430079, PR China
| | - Hengjia Wang
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan, 430079, PR China
| | - Xiaoqian Wei
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan, 430079, PR China
| | - Yu Wu
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan, 430079, PR China
| | - Wenling Gu
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan, 430079, PR China.
| | - Liuyong Hu
- School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan, 430205, PR China.
| | - Chengzhou Zhu
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensing Technology and Health, College of Chemistry, Central China Normal University, Wuhan, 430079, PR China.
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23
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Daelman N, Hegner FS, Rellán-Piñeiro M, Capdevila-Cortada M, García-Muelas R, López N. Quasi-degenerate states and their dynamics in oxygen deficient reducible metal oxides. J Chem Phys 2020; 152:050901. [PMID: 32035446 DOI: 10.1063/1.5138484] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The physical and chemical properties of oxides are defined by the presence of oxygen vacancies. Experimentally, non-defective structures are almost impossible to achieve due to synthetic constraints. Therefore, it is crucial to account for vacancies when evaluating the characteristics of these materials. The electronic structure of oxygen-depleted oxides deeply differs from that of the native forms, in particular, of reducible metal oxides, where excess electrons can localize in various distinct positions. In this perspective, we present recent developments from our group describing the complexity of these defective materials that highlight the need for an accurate description of (i) intrinsic vacancies in polar terminations, (ii) multiple geometries and complex electronic structures with several states attainable at typical working conditions, and (iii) the associated dynamics for both vacancy diffusion and the coexistence of more than one electronic structure. All these aspects widen our current understanding of defects in oxides and need to be adequately introduced in emerging high-throughput screening methodologies.
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Affiliation(s)
- Nathan Daelman
- Institute of Chemical Research of Catalonia, ICIQ, The Barcelona Institute of Science and Technology, BIST, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Franziska Simone Hegner
- Institute of Chemical Research of Catalonia, ICIQ, The Barcelona Institute of Science and Technology, BIST, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Marcos Rellán-Piñeiro
- Institute of Chemical Research of Catalonia, ICIQ, The Barcelona Institute of Science and Technology, BIST, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Marçal Capdevila-Cortada
- Institute of Chemical Research of Catalonia, ICIQ, The Barcelona Institute of Science and Technology, BIST, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Rodrigo García-Muelas
- Institute of Chemical Research of Catalonia, ICIQ, The Barcelona Institute of Science and Technology, BIST, Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Núria López
- Institute of Chemical Research of Catalonia, ICIQ, The Barcelona Institute of Science and Technology, BIST, Av. Països Catalans 16, 43007 Tarragona, Spain
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24
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Cao X, Zhao X, Hu J, Chen Z. First-principles investigation of the electronic properties of the Bi 2O 4(101)/BiVO 4(010) heterojunction towards more efficient solar water splitting. Phys Chem Chem Phys 2020; 22:2449-2456. [PMID: 31939946 DOI: 10.1039/c9cp06443e] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
First-principles calculations based on density functional theory were carried out to explore the geometric structure, light absorption, charge separation, over-potential and stability of Bi2O4 (101)/BiVO4 (010) heterojunction. The results show that the formed heterojunction can improve visible light utilization and promote transfer of photo-generated holes from BiVO4 to Bi2O4. Furthermore, the Bi5+ site in the Bi2O4(101) surface is energetically more favorable as the photoanode for the oxygen evolution reaction (OER) than the Bi3+ sites in Bi2O4(101) and BiVO4(010). At the same time, it is also found that the Bi5+ in Bi2O4(101) are more stable than the Bi3+ due to the lower surface energy and stronger bond energy with neighbors. Therefore, forming the Bi2O4/BiVO4 heterojunction can effectively improve the activity and stability of BiVO4 for water splitting reactions.
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Affiliation(s)
- Xiaofei Cao
- School of Chemical Engineering, Northwest University, Xi'an, 710069, P. R. China.
| | - Xin Zhao
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore.
| | - Jun Hu
- School of Chemical Engineering, Northwest University, Xi'an, 710069, P. R. China.
| | - Zhong Chen
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore.
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25
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Ahmed T, Ammar M, Saleem A, Zhang HL, Xu HB. Z-scheme 2D-m-BiVO4 networks decorated by a g-CN nanosheet heterostructured photocatalyst with an excellent response to visible light. RSC Adv 2020; 10:3192-3202. [PMID: 35497764 PMCID: PMC9048574 DOI: 10.1039/c9ra09473c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 12/19/2019] [Indexed: 02/02/2023] Open
Abstract
For economical water splitting and degradation of toxic organic dyes, the development of inexpensive, efficient, and stable photocatalysts capable of harvesting visible light is essential. In this study, we designed a model system by grafting graphitic carbon nitride (g-C3N4) (g-CN) nanosheets on the surface of 2D monoclinic bismuth vanadate (m-BiVO4) nanoplates by a simple hydrothermal method. This as-synthesized photocatalyst has well-dispersed g-CN nanosheets on the surface of the nanoplates of m-BiVO4, thus forming a heterojunction with a high specific surface area. The degradation rate for bromophenol blue (BPB) shown by BiVO4/g-CN is 96% and that for methylene blue (MB) is 98% within 1 h and 25 min, respectively. The 2D BiVO4/g-CN heterostructure system also shows outstanding durability and retains up to ∼95% degradation efficiency for the MB dye even after eight consecutive cycles; the degradation efficiency for BPB does not change too much after eight consecutive cycles as well. The enhanced photocatalytic activities of BiVO4/g-CN are attributed to the larger surface area, larger number of surface active sites, fast charge transfer and improved separation of photogenerated charge carriers. We proposed a mechanism for the improved photocatalytic performance of the Z-scheme photocatalytic system. The present work gives a good example for the development of a novel Z-scheme heterojunction with good stability and high photocatalytic activity for toxic organic dye degradation and water splitting applications. For economical water splitting and degradation of toxic organic dyes, the development of inexpensive, efficient, and stable photocatalysts capable of harvesting visible light is essential.![]()
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Affiliation(s)
- Toheed Ahmed
- Department of Applied Chemistry
- Government College University
- Faisalabad 38000
- Pakistan
- Key Laboratory of Green Process and Engineering
| | - Muhammad Ammar
- University of Chinese Academy of Sciences
- Beijing 100049
- China
- Department of Chemical Engineering Technology
- Government College University
| | - Aimen Saleem
- Biotechnology and Fermentation Group
- Department of Animal Sciences
- The Ohio State University
- QARDC
- Wooster
| | - Hong-ling Zhang
- Key Laboratory of Green Process and Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Hong-bin Xu
- Key Laboratory of Green Process and Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
- China
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26
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Chen S, Huang D, Xu P, Gong X, Xue W, Lei L, Deng R, Li J, Li Z. Facet-Engineered Surface and Interface Design of Monoclinic Scheelite Bismuth Vanadate for Enhanced Photocatalytic Performance. ACS Catal 2019. [DOI: 10.1021/acscatal.9b03411] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Sha Chen
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
| | - Danlian Huang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
| | - Piao Xu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
| | - Xiaomin Gong
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
| | - Wenjing Xue
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
| | - Lei Lei
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
| | - Rui Deng
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
| | - Jing Li
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
| | - Zhihao Li
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
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27
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Hegner FS, Forrer D, Galán-Mascarós JR, López N, Selloni A. Versatile Nature of Oxygen Vacancies in Bismuth Vanadate Bulk and (001) Surface. J Phys Chem Lett 2019; 10:6672-6678. [PMID: 31608645 DOI: 10.1021/acs.jpclett.9b02552] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Bismuth vanadate (BiVO4) has emerged as one of the most promising photoanode materials for solar fuel production. Oxygen vacancies play a pivotal role in the photoelectrochemical efficiency, yet their electronic nature and contribution to n-type conductivity are still under debate. Using first-principles calculations, we show that oxygen vacancies in BiVO4 have two distinguishable geometric configurations characterized by either undercoordinated, reduced VIVO3 and BiIIO7 subunits or a VIV-O-VIV/V bridge (split vacancy), quenching the oxygen vacancy site. While both configurations have similar energies in the bulk, the (001) subsurface acts like an energetic sink that stabilizes the split oxygen vacancy by ∼1 eV. The barrierless creation of a bridging V2O7 unit allows for partial electron delocalization throughout the near-surface region, consistent with recent experimental observations indicating that BiVO4(001) is an electron-rich surface.
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Affiliation(s)
- Franziska Simone Hegner
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST) , Avinguda Paisos Catalans 16 , 43007 Tarragona , Spain
| | - Daniel Forrer
- ICMATE-CNR and INSTM , Via F. Marzolo 1 , 35131 Padua , Italy
| | - José Ramón Galán-Mascarós
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST) , Avinguda Paisos Catalans 16 , 43007 Tarragona , Spain
- ICREA , Passeig Lluís Companys 23 , 08010 Barcelona , Spain
| | - Núria López
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST) , Avinguda Paisos Catalans 16 , 43007 Tarragona , Spain
| | - Annabella Selloni
- Princeton University , Department of Chemistry , New Jersey 08544 , United States
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28
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Yao X, Zhao X, Hu J, Xie H, Wang D, Cao X, Zhang Z, Huang Y, Chen Z, Sritharan T. The Self-Passivation Mechanism in Degradation of BiVO 4 Photoanode. iScience 2019; 19:976-985. [PMID: 31522120 PMCID: PMC6744392 DOI: 10.1016/j.isci.2019.08.037] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Revised: 07/15/2019] [Accepted: 08/20/2019] [Indexed: 11/30/2022] Open
Abstract
BiVO4 is a promising photoanode material for solar-assisted water splitting in a photoelectrochemical cell but has a propensity to degrade. Investigations carried out here in 0.1 M Na2SO4 electrolyte showed that degradation is by dissolution of V in the electrolyte while Bi is retained on the anode probably in the form of solid Bi oxide (Bi2O3, Bi4O7). Accumulation of Bi oxide on the anode surface leads to passivation from further degradation. Thermodynamic modeling of possible degradation reactions has provided theoretical support to this mechanism. This self-passivation is accompanied by a decrease in photocurrent density, but it protects the anode against extensive photocorrosion and contributes to long-term stability. This is a more definitive understanding of degradation of BiVO4 during water splitting in a photoelectrochemical cell. This understanding is imperative for both fundamental and applied research. A mechanism of degradation is developed for BiVO4 photoanode during photolysis Degradation occurs by V dissolution and Bi accumulation on the anode as oxide Accumulating Bi oxide passivates the anode Thermodynamic modeling supports this mechanism
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Affiliation(s)
- Xin Yao
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore; Singapore-Berkeley Research Initiative for Sustainable Energy (SinBeRISE) CREATE Tower, 1 Create Way, #11-00, Singapore 138602, Singapore
| | - Xin Zhao
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Jun Hu
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Huiqing Xie
- Institute of Materials Research and Engineering, 2 Fusionopolis Way, Singapore 138634, Singapore
| | - Danping Wang
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore; Singapore-Berkeley Research Initiative for Sustainable Energy (SinBeRISE) CREATE Tower, 1 Create Way, #11-00, Singapore 138602, Singapore
| | - Xun Cao
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Zheng Zhang
- Institute of Materials Research and Engineering, 2 Fusionopolis Way, Singapore 138634, Singapore
| | - Yizhong Huang
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Zhong Chen
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore; Singapore-Berkeley Research Initiative for Sustainable Energy (SinBeRISE) CREATE Tower, 1 Create Way, #11-00, Singapore 138602, Singapore.
| | - Thirumany Sritharan
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore; Singapore-Berkeley Research Initiative for Sustainable Energy (SinBeRISE) CREATE Tower, 1 Create Way, #11-00, Singapore 138602, Singapore.
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29
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Zhou X, Dong H. A Theoretical Perspective on Charge Separation and Transfer in Metal Oxide Photocatalysts for Water Splitting. ChemCatChem 2019. [DOI: 10.1002/cctc.201900567] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Xin Zhou
- College of Environment and Chemical EngineeringDalian University No. 10 Xuefu Street Dalian Economic Technological Development Zone Dalian 116622, Liaoning P.R. China
| | - Hao Dong
- School of Chemistry and Chemical EngineeringLiaoning Normal University No. 850 Huanghe Road Shahekou District Dalian 116029, Liaoning P.R. China
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30
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Hu J, Cao X, Zhao X, Chen W, Lu GP, Dan Y, Chen Z. Catalytically Active Sites on Ni 5P 4 for Efficient Hydrogen Evolution Reaction From Atomic Scale Calculation. Front Chem 2019; 7:444. [PMID: 31263695 PMCID: PMC6590065 DOI: 10.3389/fchem.2019.00444] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 05/29/2019] [Indexed: 11/15/2022] Open
Abstract
Ni5P4 has received considerable attention recently as a potentially viable substitute for Pt as the cathode material for catalytic water splitting. The current investigation focuses on theoretical understandings of the characteristics of active sites toward water splitting using first-principle calculations. The results indicate that the activity of bridge NiNi sites is highly related on the bond number with neighbors. If the total bond number of NiNi is higher than 14, the sites will exhibit excellent HER performance. For the top P sites, the activity is greatly affected by the position of coplanar atoms besides the bond number. Data of bond length with neighbors can be used to predict the activity of P sites as reviewed by machine learning. Partial density of state (PDOS) analysis of different P sites illustrates that the activity of P sites should form the appropriate bond to localize some 3p orbits of the P atoms. Bond number and position of neighbors are two key parameters for the prediction of the HER activity. Based on the current work, most of the low-energy surfaces of Ni5P4 are active, indicating a good potential of this materials for hydrogen evolution reactions.
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Affiliation(s)
- Jun Hu
- School of Chemical Engineering, Northwest University, Xi'an, China.,School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
| | - Xiaofei Cao
- School of Chemical Engineering, Northwest University, Xi'an, China
| | - Xin Zhao
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
| | - Wei Chen
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou, China
| | - Guo-Ping Lu
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore.,School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, China
| | - Yong Dan
- School of Chemical Engineering, Northwest University, Xi'an, China
| | - Zhong Chen
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, Singapore
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31
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Strategies of Anode Materials Design towards Improved Photoelectrochemical Water Splitting Efficiency. COATINGS 2019. [DOI: 10.3390/coatings9050309] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This review presents the latest processes for designing anode materials to improve the efficiency of water photolysis. Based on different contributions towards the solar-to-hydrogen efficiency, we mainly review the strategies to enhance the light absorption, facilitate the charge separation, and enhance the surface charge injection. Although great achievements have been obtained, the challenges faced in the development of anode materials for solar energy to make water splitting remain significant. In this review, the major challenges to improve the conversion efficiency of photoelectrochemical water splitting reactions are presented. We hope that this review helps researchers in or coming to the field to better appreciate the state-of-the-art, and to make a better choice when they embark on new research in photocatalytic water splitting.
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32
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Synthesis of BiVO4 nanoflakes decorated with AuPd nanoparticles as selective oxidation photocatalysts. J Colloid Interface Sci 2019; 541:300-311. [DOI: 10.1016/j.jcis.2019.01.108] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 01/23/2019] [Accepted: 01/24/2019] [Indexed: 01/06/2023]
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33
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Wang S, Liu G, Wang L. Crystal Facet Engineering of Photoelectrodes for Photoelectrochemical Water Splitting. Chem Rev 2019; 119:5192-5247. [PMID: 30875200 DOI: 10.1021/acs.chemrev.8b00584] [Citation(s) in RCA: 240] [Impact Index Per Article: 48.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Photoelectrochemical (PEC) water splitting is a promising approach for solar-driven hydrogen production with zero emissions, and it has been intensively studied over the past decades. However, the solar-to-hydrogen (STH) efficiencies of the current PEC systems are still far from the 10% target needed for practical application. The development of efficient photoelectrodes in PEC systems holds the key to achieving high STH efficiencies. In recent years, crystal facet engineering has emerged as an important strategy in designing efficient photoelectrodes for PEC water splitting, which has yet to be comprehensively reviewed and is the main focus of this article. After the Introduction, the second section of this review concisely introduces the mechanisms of crystal facet engineering. The subsequent section provides a snapshot of the unique facet-dependent properties of some semiconductor crystals including surface electronic structures, redox reaction sites, surface built-in electric fields, molecular adsorption, photoreaction activity, photocorrosion resistance, and electrical conductivity. Then, the methods for fabricating photoelectrodes with faceted semiconductor crystals are reviewed, with a focus on the preparation processes. In addition, the notable advantages of the crystal facet engineering of photoelectrodes in terms of light harvesting, charge separation and transfer, and surface reactions are critically discussed. This is followed by a systematic overview of the modification strategies of faceted photoelectrodes to further enhance the PEC performance. The last section summarizes the major challenges and some invigorating perspectives for future research on crystal facet engineered photoelectrodes, which are believed to play a vital role in promoting the development of this important research field.
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Affiliation(s)
- Songcan Wang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology , The University of Queensland , Brisbane , Queensland 4072 , Australia
| | - Gang Liu
- Shenyang National Laboratory for Materials Science , Institute of Metal Research Chinese Academy of Sciences , 72 Wenhua Road , Shenyang 110016 , China.,School of Materials Science and Engineering , University of Science and Technology of China , 72 Wenhua Road , Shenyang 110016 , China
| | - Lianzhou Wang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology , The University of Queensland , Brisbane , Queensland 4072 , Australia
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Wang Z, Wang T, Zhu J, Wei L, Shen Y, Li N, Hu J. Synergistic effect and mechanism of copper corrosion inhibition using cinnamaldehyde and vanillin in HCl solution: An experimental and theoretical approach. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2018.12.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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35
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Sengottaiyan C, Kalam NA, Jayavel R, Shrestha RG, Subramani T, Sankar S, Hill JP, Shrestha LK, Ariga K. BiVO4/RGO hybrid nanostructure for high performance electrochemical supercapacitor. J SOLID STATE CHEM 2019. [DOI: 10.1016/j.jssc.2018.10.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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36
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Hu J, Zhao X, Chen W, Chen Z. Enhanced Charge Transport and Increased Active Sites on α-Fe 2O 3 (110) Nanorod Surface Containing Oxygen Vacancies for Improved Solar Water Oxidation Performance. ACS OMEGA 2018; 3:14973-14980. [PMID: 31458163 PMCID: PMC6643919 DOI: 10.1021/acsomega.8b01195] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Accepted: 10/23/2018] [Indexed: 05/31/2023]
Abstract
The effect of oxygen vacancies (VO) on α-Fe2O3 (110) facet on the performance of photoelectrochemical (PEC) water splitting is researched by both experiments and density functional theory (DFT) calculations. The experimental results manifest that the enhancement in photocurrent density by the presence of VO is related with increased charge separation and charge-transfer efficiencies. The electrochemical analysis reveals that the sample with VO demonstrates an enhanced carrier density and reduced charge-transfer resistance. The results of DFT calculation indicate that the better charge separation is also contributed by the decrease of potential on the VO surface, which improves the hole transport from the bulk to the surface. The reduced charge-transfer resistance is owing to the greatly increased number of active sites. The current study provides important insight into the roles of VO on α-Fe2O3 photoanode, especially on its surface catalysis. The generated lesson is also helpful for the improvement of other PEC photoanode materials.
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Affiliation(s)
- Jun Hu
- School of Chemical
Engineering, Northwest University, Xi’an 710069, P. R. China
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
| | - Xin Zhao
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
| | - Wei Chen
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, Zhejiang Province, P. R. China
| | - Zhong Chen
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
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37
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Si F, Tang F, Xue H. Electronic properties of NiO (1 1 0)/CH3NH3PbI3 (1 0 0) interface from the first-principles calculations. Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2018.07.047] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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38
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Zhao X, Hu J, Chen S, Chen Z. An investigation on the role of W doping in BiVO4 photoanodes used for solar water splitting. Phys Chem Chem Phys 2018; 20:13637-13645. [DOI: 10.1039/c8cp01316k] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
W doping has enhanced the photocurrent through increasing the carrier density and lowering surface charge transfer resistance.
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Affiliation(s)
- Xin Zhao
- School of Materials Science and Engineering
- Nanyang Technological University
- 50 Nanyang Avenue
- Singapore
- Singapore
| | - Jun Hu
- School of Materials Science and Engineering
- Nanyang Technological University
- 50 Nanyang Avenue
- Singapore
- Singapore
| | - Shi Chen
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- Singapore
- Singapore
| | - Zhong Chen
- School of Materials Science and Engineering
- Nanyang Technological University
- 50 Nanyang Avenue
- Singapore
- Singapore
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