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Shi X, He C, Jiang L, Liang H, Zhang X, Yuan R, Yang X. Mo-doped Co LDHs as Raman enhanced substrate for detection of roxarsine. Anal Chim Acta 2024; 1318:342947. [PMID: 39067925 DOI: 10.1016/j.aca.2024.342947] [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: 02/20/2024] [Revised: 06/12/2024] [Accepted: 07/05/2024] [Indexed: 07/30/2024]
Abstract
BACKGROUND Roxarsone (ROX) is widely used as a feed additive, which is indigestible after ingestion by poultry, and most of it can only be excreted into the natural environment and degraded into highly toxic and carcinogenic inorganic arsenic compounds, which pose a hazard to the ecosystem and human health. However, for roxarsone, traditional detection methods require complex and time-consuming procedures, so it is urgent to find a new fast detection method for detection of ROX. RESULTS In this work, we developed a novel Raman enhancement material and utilized the Surface-enhanced Raman scattering (SERS) technique to achieve rapid and sensitive detection of roxarsone. Specifically, Mo-doped cobalt layered double hydroxides (Co-LDHs) semiconductor material (abbreviated as CMM-100) was prepared by a simple method of using ion-assisted MOF etching. Under laser excitation at a wavelength of 532 nm, the CMM-100 showed excellent SERS property to various organic dye molecules such as methylene blue (MB), Toluidine Blue(TB), and Crystal Violet (CV). Especially, an enhancement factor (EF) of 1.4 × 106 was achieved for MB. Compared with the traditional method, this work utilized the fast and non-destructive SERS technology, which achieved a rapid detection of ROX. The detection limit was as low as 9.73 × 10-10 M, and the detection range was from 10-9 M to 10-3 M. SIGNIFICANCE In this work, SERS technology was adopted for the rapid and sensitive detection of ROX. This study provides a Raman-enhanced substrate named CMMs for detection of food additives, pesticides, biomolecules, etc., which also broadens the application areas of SERS materials.
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Affiliation(s)
- Xichen Shi
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Chaoqin He
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Lingling Jiang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Huan Liang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Xinli Zhang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Ruo Yuan
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China
| | - Xia Yang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, PR China.
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Li K, Yin Y, Diao P. Enhancing Photoelectrochemical Water Oxidation on WO 3 via Electrochromic Modulation: Universal Effects and Mechanistic Insights. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2402474. [PMID: 38822710 DOI: 10.1002/smll.202402474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Revised: 05/19/2024] [Indexed: 06/03/2024]
Abstract
Although WO3 exhibits both electrochromic and photoelectrochemical (PEC) properties, there is no research conducted to investigate the correlation between them. The study herein reports the electrochromic enhancement of PEC activity on WO3. The electrochromic WO3 (e-WO3) exhibits a significantly enhanced activity for PEC water oxidation compared to raw WO3 (r-WO3), with a limiting photocurrent density three times that of r-WO3. The electrochromic enhancement of PEC activity is universal and independent of the type of cations inserted during electrochromism. Decoloring reduces the PEC activity but a simple re-coloring restores the activity to its maximum value. Electrochromism induces large amounts of oxygen vacancies and surface states, the former improving the electron density of WO3 and the latter facilitating the hole transfer across e-WO3/electrolyte interface. It is proved that the electrochromic enhancement effect is due to the significantly improved electron-hole separation efficiency and the charge transfer efficiency across the WO3/electrolyte interface.
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Affiliation(s)
- Kangqiang Li
- Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, Beijing, 100191, China
| | - Yefeng Yin
- Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, Beijing, 100191, China
| | - Peng Diao
- Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beihang University, Beijing, 100191, China
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3
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Wang X, Fan G, Guo S, Gao R, Guo Y, Han C, Gao Y, Zhang J, Gu X, Wu L. Regulated Dual Defects of Bridging Organic and Terminal Inorganic Ligands in Iron-based Metal-Organic Framework Nodes for Efficient Photocatalytic Ammonia Synthesis. Angew Chem Int Ed Engl 2024; 63:e202404258. [PMID: 38454791 DOI: 10.1002/anie.202404258] [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: 03/01/2024] [Revised: 03/06/2024] [Accepted: 03/07/2024] [Indexed: 03/09/2024]
Abstract
Engineering advantageous defects to construct well-defined active sites in catalysts is promising but challenging to achieve efficient photocatalytic NH3 synthesis from N2 and H2O due to the chemical inertness of N2 molecule. Here, we report defective Fe-based metal-organic framework (MOF) photocatalysts via a non-thermal plasma-assisted synthesis strategy, where their NH3 production capability is synergistically regulated by two types of defects, namely, bridging organic ligands and terminal inorganic ligands (OH- and H2O). Specially, the optimized MIL-100(Fe) catalysts, where there are only terminal inorganic ligand defects and coexistence of dual defects, exhibit the respective 1.7- and 7.7-fold activity enhancement comparable to the pristine catalyst under visible light irradiation. As revealed by experimental and theoretical calculation results, the dual defects in the catalyst induce the formation of abundant and highly accessible coordinatively unsaturated Fe active sites and synergistically optimize their geometric and electronic structures, which favors the injection of more d-orbital electrons in Fe sites into the N2 π* antibonding orbital to achieve N2 activation and the formation of a key intermediate *NNH in the reaction. This work provides a guidance on the rational design and accurate construction of porous catalysts with precise defective structures for high-performance activation of catalytic molecules.
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Affiliation(s)
- Xiaosong Wang
- School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China
| | - Guilan Fan
- School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China
| | - Shoujun Guo
- School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China
| | - Rong Gao
- School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China
| | - Yan Guo
- School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China
| | - Chenhui Han
- School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China
| | - Yuliang Gao
- School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China
| | - Jiangwei Zhang
- School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China
| | - Xiaojun Gu
- School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China
| | - Limin Wu
- School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China
- Department of Materials Science and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, China
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4
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Liu Y, Xue W, Liu X, Wei F, Lin X, Lu XF, Lin W, Hou Y, Zhang G, Wang S. Ultrafine Pt Nanoparticles on Defective Tungsten Oxide for Photocatalytic Ethylene Synthesis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2402004. [PMID: 38686672 DOI: 10.1002/smll.202402004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 04/18/2024] [Indexed: 05/02/2024]
Abstract
The selective conversion of ethane (C2H6) to ethylene (C2H4) under mild conditions is highly wanted, yet very challenging. Herein, it is demonstrated that a Pt/WO3-x catalyst, constructed by supporting ultrafine Pt nanoparticles on the surface of oxygen-deficient tungsten oxide (WO3-x) nanoplates, is efficient and reusable for photocatalytic C2H6 dehydrogenation to produce C2H4 with high selectivity. Specifically, under pure light irradiation, the optimized Pt/WO3-x photocatalyst exhibits C2H4 and H2 yield rates of 291.8 and 373.4 µmol g-1 h-1, respectively, coupled with a small formation of CO (85.2 µmol g-1 h-1) and CH4 (19.0 µmol g-1 h-1), corresponding to a high C2H4 selectivity of 84.9%. Experimental and theoretical studies reveal that the vacancy-rich WO3-x catalyst enables broad optical harvesting to generate charge carriers by light for working the redox reactions. Meanwhile, the Pt cocatalyst reinforces adsorption of C2H6, desorption of key reaction species, and separation and migration of light-induced charges to promote the dehydrogenation reaction with high productivity and selectivity. In situ diffuse reflectance infrared Fourier transform spectroscopy and density functional theory calculation expose the key intermediates formed on the Pt/WO3-x catalyst during the reaction, which permits the construction of the possible C2H6 dehydrogenation mechanism.
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Affiliation(s)
- Yue Liu
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Weichao Xue
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Xiaoqing Liu
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Fen Wei
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Xiahui Lin
- College of Environment and Safety Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Xue Feng Lu
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Wei Lin
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Yidong Hou
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Guigang Zhang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Sibo Wang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
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Xiong Y, He H, Cui Y, Wu ZM, Ding S, Zhang J, Peng B, Yang L. Tuning Surface Electronics State of P-Doped In 2.77S 4/In(OH) 3 toward Efficient Photoelectrochemical Water Oxidation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:8533-8541. [PMID: 38606693 DOI: 10.1021/acs.langmuir.4c00135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/13/2024]
Abstract
Indium sulfide with a two-dimensional layered structure offers a platform for catalyzing water oxidation by a photoelectrochemical process. However, the limited hole holders hinder the weak intrinsic catalytic activity. Here, the nonmetallic phosphorus atom is coordinated to In2.77S4/In(OH)3 through a bridge-bonded sulfur atom. By substituting the S position by the P dopant, the work function (surface potential) is regulated from 445 to 210 mV, and the lower surface potential is shown to be beneficial for holding the photogenerated holes. In2.77S4/In(OH)3/P introduces a built-in electric field under the difference of Fermi energy, and the direction is from the bulk to the surface. This band structure results in upward band bending at the interface of In2.77S4/In(OH)3 and P-doped sites, which is identified by density functional theory calculations (∼0.8 eV work function difference). In2.77S4/In(OH)3/P stands out with the highest oxidation efficiency (ηoxi = 70%) and charge separation efficiency (ηsep = 69%). Importantly, it delivers a remarkable water oxidation photocurrent density of 2.51 mA cm-2 under one sun of illumination.
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Affiliation(s)
- Yuli Xiong
- College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, P. R. China
| | - Huichao He
- Institute of Environmental Energy Materials and Intelligent Devices, School of Metallurgy and Materials Engineering, Chongqing University of Science and Technology. Chongqing 401331, P. R. China
| | - Yuting Cui
- College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, P. R. China
| | - Zhi-Min Wu
- College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, P. R. China
| | - Shoubing Ding
- College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, P. R. China
| | - Jie Zhang
- College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, P. R. China
| | - Bo Peng
- College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, P. R. China
| | - Lin Yang
- Key Laboratory of Optoelectronic Technology and System of Ministry of Education, College of Optoelectronic Engineering, Chongqing University, Chongqing 400030, P. R. China
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6
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Liang Z, Bai B, Wang X, Gao Y, Li Y, Bu Q, Ding F, Sun Y, Xu Z. Dodecahedral hollow multi-shelled Co 3O 4/Ag:ZnIn 2S 4 photocatalyst for enhancing solar energy utilization efficiency. RSC Adv 2024; 14:6205-6215. [PMID: 38375002 PMCID: PMC10875279 DOI: 10.1039/d3ra08425f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Accepted: 02/10/2024] [Indexed: 02/21/2024] Open
Abstract
Employing semiconductor photocatalysts featuring a hollow multi-shelled (HoMs) structure to establish a heterojunction is an effective approach to addressing the issues of low light energy utilization and severe recombination of photogenerated charge carriers. To take advantage of these key factors in semiconductor photocatalysis, here, a dodecahedral HoMs Co3O4/Ag:ZnIn2S4 photocatalyst (denoted as Co3O4/AZIS) was firstly synthesized by coupling Ag+-doped ZnIn2S4 (AZIS) nanosheets with dodecahedral HoMs Co3O4. The unique HoMs structure of the photocatalyst can not only effectively promote the separation and transfer of photo-induced charge, but also improve the utilization rate of visible light, exposing rich active sites for the photocatalytic redox reaction. The photocatalytic experiment results showed that the Co3O4/90.0 wt% AZIS photocatalyst has a high hydrogen (H2) production rate (695.0 μmol h-1 g-1) and high methyl orange (MO) degradation rate (0.4243 min-1). This work provides a feasible strategy for the development of HoMs heterojunction photocatalysts with enhanced H2 production and degradation properties of organic dyes.
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Affiliation(s)
- Zhiman Liang
- College of Environmental and Chemical Engineering, Dalian University Dalian 116622 China
| | - Bobo Bai
- College of Environmental and Chemical Engineering, Dalian University Dalian 116622 China
| | - Xiufang Wang
- College of Environmental and Chemical Engineering, Dalian University Dalian 116622 China
| | - Yu Gao
- College of Environmental and Chemical Engineering, Dalian University Dalian 116622 China
| | - Yi Li
- College of Environmental and Chemical Engineering, Dalian University Dalian 116622 China
| | - Qiuhui Bu
- College of Environmental and Chemical Engineering, Dalian University Dalian 116622 China
| | - Fu Ding
- Key Laboratory of Inorganic Molecule-Based Chemistry of Liaoning Province, Shenyang University of Chemical Technology Shenyang 110142 China
| | - Yaguang Sun
- Key Laboratory of Inorganic Molecule-Based Chemistry of Liaoning Province, Shenyang University of Chemical Technology Shenyang 110142 China
| | - Zhenhe Xu
- College of Environmental and Chemical Engineering, Dalian University Dalian 116622 China
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7
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Woo HK, Gautam AK, Barroso-Martínez JS, Baddorf AP, Zhou K, Choi YY, He J, Mironenko AV, Rodríguez-López J, Cai L. Defect Engineering of WO 3 by Rapid Flame Reduction for Efficient Photoelectrochemical Conversion of Methane into Liquid Oxygenates. NANO LETTERS 2023; 23:11493-11500. [PMID: 38061056 DOI: 10.1021/acs.nanolett.3c03131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
Photoelectrochemical (PEC) conversion is a promising way to use methane (CH4) as a chemical building block without harsh conditions. However, the PEC conversion of CH4 to value-added chemicals remains challenging due to the thermodynamically favorable overoxidation of CH4. Here, we report WO3 nanotube (NT) photoelectrocatalysts for PEC CH4 conversion with high liquid product selectivity through defect engineering. By tuning the flame reduction treatment, we carefully controlled the oxygen vacancies of WO3 NTs. The optimally reduced WO3 NTs suppressed overoxidation of CH4 showing a high total C1 liquid selectivity of 69.4% and a production rate of 0.174 μmol cm-2 h-1. Scanning electrochemical microscopy revealed that oxygen vacancies can restrain the production of hydroxyl radicals, which, in excess, could further oxidize C1 intermediates to CO2. Additionally, band diagram analysis and computational studies elucidated that oxygen vacancies thermodynamically suppress overoxidation. This work introduces a strategy for understanding and controlling the selectivity of photoelectrocatalysts for direct conversion of CH4 to liquids.
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Affiliation(s)
- Ho Kun Woo
- Department of Mechanical Science and Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Ankit Kumar Gautam
- Department of Chemical and Biomolecular Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Jaxiry S Barroso-Martínez
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Arthur P Baddorf
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Kai Zhou
- Department of Mechanical Science and Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Yoon Young Choi
- Department of Mechanical Science and Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Jiajun He
- Department of Mechanical Science and Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Alexander V Mironenko
- Department of Chemical and Biomolecular Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Joaquín Rodríguez-López
- Department of Chemistry, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Beckman Institute for Advanced Science and Technology, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Materials Research Laboratory, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Lili Cai
- Department of Mechanical Science and Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
- Materials Research Laboratory, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
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8
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Zhang M, Xue H, Han X, Zhang Z, Jiang Y, Deng Y, Hu W. Accelerate charge separation in Cu 2O/MoO 2 photocathode for photoelectrocatalytic hydrogen evolution. J Colloid Interface Sci 2023; 650:284-293. [PMID: 37413862 DOI: 10.1016/j.jcis.2023.06.203] [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: 05/14/2023] [Revised: 06/23/2023] [Accepted: 06/30/2023] [Indexed: 07/08/2023]
Abstract
Photoelectrocatalyzing water reduction is a potential approach to building a green and sustainable society. As a benchmark photocathode, Cu2O receives much attention but faces serious charge recombination and photocorrosion. This work prepared an excellent Cu2O/MoO2 photocathode via in situ electrodeposition. A systematical study of theory and experiment demonstrates that MoO2 not only effectively passivates the surface state of Cu2O as well as accelerates reaction kinetics as a cocatalyst, but also promotes the directional migration and separation of photogenerated charge. As expected, the constructed photocathode exhibits a highly enhanced photocurrent density and an appealing energy transformation efficacy. Importantly, MoO2 can inhibit the reduction of Cu+ in Cu2O via a formed internal electric field and shows excellent photoelectrochemical stability. These findings pave the way to designing a high-activity photocathode with high stability.
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Affiliation(s)
- Mengmeng Zhang
- State Key Laboratory of Separation Membrane and Membrane Processes, Tianjin Municipal Key Laboratory of Advanced Fiber and Energy Storage, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Hui Xue
- School of Mechanical Engineering, Tiangong University, Tianjin 300387, China
| | - Xiaopeng Han
- School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials, Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), Tianjin University, Tianjin 300350, China
| | - Zhijia Zhang
- State Key Laboratory of Separation Membrane and Membrane Processes, Tianjin Municipal Key Laboratory of Advanced Fiber and Energy Storage, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Yong Jiang
- State Key Laboratory of Separation Membrane and Membrane Processes, Tianjin Municipal Key Laboratory of Advanced Fiber and Energy Storage, School of Materials Science and Engineering, Tiangong University, Tianjin 300387, China.
| | - Yida Deng
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Materials Science and Engineering, Hainan University, Haikou 570228, China.
| | - Wenbin Hu
- School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials, Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), Tianjin University, Tianjin 300350, China
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Wang H, Gao RT, Nguyen NT, Bai J, Ren S, Liu X, Zhang X, Wang L. Superhydrophilic CoFe Dispersion of Hydrogel Electrocatalysts for Quasi-Solid-State Photoelectrochemical Water Splitting. ACS NANO 2023; 17:22071-22081. [PMID: 37901939 DOI: 10.1021/acsnano.3c08861] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
Photoelectrochemical (PEC) water splitting is an attractive strategy to convert solar energy to hydrogen. However, the lifetime of PEC devices is restricted by the photocorrosion of semiconductors and the instability of co-catalysts. Herein, we report a feasible in situ inherent cross-linking method for stabilizing semiconductors that uses a CoFe-dispersed polyacrylamide (PAM) hydrogel as a transparent protector. The CoFe-PAM hydrogel protected BiVO4 (BVO) photoanode reached a photocurrent density of 5.7 mA cm-2 at 1.23 VRHE under AM 1.5G illumination with good stability. The PAM hydrogel network improved the loading of Fe sites while enabling the retention of more CoFe co-catalysts and increasing the electron density of the reaction active sites, further improving the PEC performance and stability. More importantly, by tuning the polymerization network, we pioneer the use of quasi-solid-state electrolytes in photoelectrochemistry, where the high concentration of ionic solvent in the PAM hydrogel ensures effective charge transport and good water storage owing to the hydrophilic and porous structure of the hydrogel. This work expands the scope of PEC research by providing a class of three-dimensional hydrogel electrocatalysts and quasi-solid-state electrolytes with huge extension potential, and the versatility of these quasi-solid-state electrolytes can be employed for other semiconductors.
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Affiliation(s)
- Hao Wang
- College of Chemistry and Chemical Engineering, College of Energy Material and Chemistry, Inner Mongolia University, Hohhot 010021, China
| | - Rui-Ting Gao
- College of Chemistry and Chemical Engineering, College of Energy Material and Chemistry, Inner Mongolia University, Hohhot 010021, China
| | - Nhat Truong Nguyen
- Department of Chemical and Materials Engineering, Gina Cody School of Engineering and Computer Science, Concordia University, Montreal, QC H3G 2W1, Canada
| | - Jinwei Bai
- College of Chemistry and Chemical Engineering, College of Energy Material and Chemistry, Inner Mongolia University, Hohhot 010021, China
| | - Shijie Ren
- College of Chemistry and Chemical Engineering, College of Energy Material and Chemistry, Inner Mongolia University, Hohhot 010021, China
| | - Xianhu Liu
- State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Wenhua Road 97-1, Zhengzhou 450002, China
| | - Xueyuan Zhang
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Lei Wang
- College of Chemistry and Chemical Engineering, College of Energy Material and Chemistry, Inner Mongolia University, Hohhot 010021, China
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10
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Bao W, Wang R, Liu H, Qian C, Liu H, Yu F, Guo C, Li J, Sun K. Photoelectrochemical Engineering for Light-Assisted Rechargeable Metal Batteries: Mechanism, Development, and Future. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2303745. [PMID: 37616514 DOI: 10.1002/smll.202303745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 07/14/2023] [Indexed: 08/26/2023]
Abstract
Rechargeable battery devices with high energy density are highly demanded by our modern society. The use of metal anodes is extremely attractive for future rechargeable battery devices. However, the notorious metal dendritic and instability of solid electrolyte interface issues pose a series of challenges for metal anodes. Recently, considering the indigestible dynamical behavior of metal anodes, photoelectrochemical engineering of light-assisted metal anodes have been rapidly developed since they efficiently utilize the integration and synergy of oriented crystal engineering and photocatalysis engineering, which provided a potential way to unlock the interface electrochemical mechanism and deposition reaction kinetics of metal anodes. This review starts with the fundamentals of photoelectrochemical engineering and follows with the state-of-art advance of photoelectrochemical engineering for light-assisted rechargeable metal batteries where photoelectrode materials, working principles, types, and practical applications are explained. The last section summarizes the major challenges and some invigorating perspectives for future research on light-assisted rechargeable metal batteries.
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Affiliation(s)
- Weizhai Bao
- Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
- Department of Materials Physics, School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Ronghao Wang
- Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Hongmin Liu
- Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Chengfei Qian
- Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - He Liu
- Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
- Department of Materials Physics, School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Feng Yu
- Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
- Department of Materials Physics, School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Cong Guo
- Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
- Department of Materials Physics, School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Jingfa Li
- Institute of Advanced Materials and Flexible Electronics (IAMFE), School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
- Department of Materials Physics, School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing, 210044, China
| | - Kaiwen Sun
- Australian Centre for Advanced Photovoltaics, School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, 2052, Australia
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11
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Zhu L, Zhang B, Su Q, Liu R, Lin J, Wang H, Zhu S, Li Y. Enhancing Photocatalytic Degradation via the Synergetic Effect of Vacancies and Built-In Potential in a BiOCl/BiVO 4 p-n Heterojunction. ACS APPLIED MATERIALS & INTERFACES 2023; 15:39332-39341. [PMID: 37556456 DOI: 10.1021/acsami.3c07141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/11/2023]
Abstract
Photoinduced charge separation and surface reactions are essential for ensuring high quantum efficiency of the photochemical and photophysical processes. BiVO4-based heterojunctions are promising materials for high-performance photocatalysts; however, their photocatalytic performance is significantly lower than the theoretical limit due to the sluggish water oxidation dynamics and rapid recombination of charge carriers on the catalyst surface. To address these issues, oxygen vacancies (OVs) are introduced to a rationally designed BiVO4-based heterojunction using built-in potential and gradient OVs to promote the separation of carriers and increase the photocatalytic activity. The heterojunctions with OVs exhibit a 2-fold increase in the photocatalytic activity for phenol degradation compared with that of pristine BiVO4. Additionally, density functional theory is applied to elucidate the synergistic mechanism of light absorption and charge separation in BiOCl/BiVO4 p-n heterojunction photocatalysts containing vacancies. The obtained results demonstrate a synergistic effect of vacancies and the built-in potential, providing a pathway for defect engineering in photocatalytic processes.
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Affiliation(s)
- Lulu Zhu
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Baiyu Zhang
- Materials Department, University of California, Santa Barbara, Santa Barbara, California 93106-5050, United States
| | - Qian Su
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Runlu Liu
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Jingyi Lin
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Hua Wang
- Hangzhou Global Scientific and Technological Innovation Center, School of Micro-Nano Electronics, Zhejiang University, Hangzhou 310027, China
| | - Shenmin Zhu
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Yao Li
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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12
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Ouyang J, Lu QC, Shen S, Yin SF. Surface Oxygen Species in Metal Oxide Photoanodes for Solar Energy Conversion. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1919. [PMID: 37446435 DOI: 10.3390/nano13131919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/18/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023]
Abstract
Converting and storing solar energy directly as chemical energy through photoelectrochemical devices are promising strategies to replace fossil fuels. Metal oxides are commonly used as photoanode materials, but they still encounter challenges such as limited light absorption, inefficient charge separation, sluggish surface reactions, and insufficient stability. The regulation of surface oxygen species on metal oxide photoanodes has emerged as a critical strategy to modulate molecular and charge dynamics at the reaction interface. However, the precise role of surface oxygen species in metal oxide photoanodes remains ambiguous. The review focuses on elucidating the formation and regulation mechanisms of various surface oxygen species in metal oxides, their advantages and disadvantages in photoelectrochemical reactions, and the characterization methods employed to investigate them. Additionally, the article discusses emerging opportunities and potential hurdles in the regulation of surface oxygen species. By shedding light on the significance of surface oxygen species, this review aims to advance our understanding of their impact on metal oxide photoanodes, paving the way for the design of more efficient and stable photoelectrochemical devices.
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Affiliation(s)
- Jie Ouyang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Qi-Chao Lu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Sheng Shen
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Shuang-Feng Yin
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
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13
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Jiang Z, Zhu X, Wang Z, Liu W, Yan W, Sivula K, Bao J. Edge-Sharing Octahedrally Coordinated NiFe Dual Active Sites on ZnFe 2 O 4 for Photoelectrochemical Water Oxidation. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023:e2301869. [PMID: 37261961 PMCID: PMC10401156 DOI: 10.1002/advs.202301869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 05/02/2023] [Indexed: 06/03/2023]
Abstract
The structural properties of octahedral sites (BOh ) in spinel oxides (AB2 O4 ) play vital roles in the electrochemical performance of oxygen-related reactions. However, the precise manipulation of AB2 O4 remains challenging due to the complexity of their crystal structure. Here, a simple and versatile molten-salt-mediated strategy is reported to introduce Ni2+ in Boh sites intentionally on the surface of zinc ferrite (ZnFe2 O4 , ZFO) to promote the active sites for photoelectrochemical (PEC) water splitting. The as-created photoanode (ZFO-MSNi) shows a remarkable cathodic shift of ≈ 450 mV (turn-on voltage of ≈ 0.6 VRHE ) as well as three times the 1-sun photocurrent density at 1.23 VRHE for PEC water oxidation in comparison with bare ZFO. A comprehensive structural characterization clearly reveals the local structure of the introduced Ni2+ in ZFO-MSNi. Fewer surface trapping states are observed while the precisely introduced Ni2+ and associated neighboring Fe(3-σ)+ (0<σ<1) sites unite in an edge-sharing octahedral configuration to function as NiFe dual active sites for PEC water oxidation. Moreover, open circuit potential measurements and rapid-scan voltammetry investigation give further insight into the enhanced PEC performance. Overall, this work displays a versatile strategy to regulate the surface active sites of photoelectrodes for increasing performance in PEC solar energy conversion systems.
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Affiliation(s)
- Zhiyong Jiang
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230029, China
| | - Xiaodi Zhu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230029, China
| | - Zhiyu Wang
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230029, China
| | - Wei Liu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Wensheng Yan
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230029, China
| | - Kevin Sivula
- Laboratory for Molecular Engineering of Optoelectronic Nanomaterials (LIMNO), École Polytechnique Fédérale de Lausanne, Station 6, Lausanne, 1015, Switzerland
| | - Jun Bao
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230029, China
- Key Laboratory of Precision and Intelligent Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Hefei, Anhui, 230029, China
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14
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Wang J, Ni G, Liao W, Liu K, Chen J, Liu F, Zhang Z, Jia M, Li J, Fu J, Pensa E, Jiang L, Bian Z, Cortés E, Liu M. Subsurface Engineering Induced Fermi Level De-pinning in Metal Oxide Semiconductors for Photoelectrochemical Water Splitting. Angew Chem Int Ed Engl 2023; 62:e202217026. [PMID: 36577697 DOI: 10.1002/anie.202217026] [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: 11/20/2022] [Revised: 12/21/2022] [Accepted: 12/27/2022] [Indexed: 12/30/2022]
Abstract
Photoelectrochemical (PEC) water splitting is a promising approach for renewable solar light conversion. However, surface Fermi level pinning (FLP), caused by surface trap states, severely restricts the PEC activities. Theoretical calculations indicate subsurface oxygen vacancy (sub-Ov ) could release the FLP and retain the active structure. A series of metal oxide semiconductors with sub-Ov were prepared through precisely regulated spin-coating and calcination. Etching X-ray photoelectron spectroscopy (XPS), scanning transmission electron microscopy (STEM), and electron energy loss spectra (EELS) demonstrated Ov located at sub ∼2-5 nm region. Mott-Schottky and open circuit photovoltage results confirmed the surface trap states elimination and Fermi level de-pinning. Thus, superior PEC performances of 5.1, 3.4, and 2.1 mA cm-2 at 1.23 V vs. RHE were achieved on BiVO4 , Bi2 O3 , TiO2 with outstanding stability for 72 h, outperforming most reported works under the identical conditions.
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Affiliation(s)
- Jun Wang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, P.R. China.,Hunan Joint International Research Center for Carbon Dioxide Resource Utilization, State Key Laboratory of Powder Metallurgy, School of Physics and Electronics, Central South University, Changsha, 410083, Hunan, P.R. China
| | - Ganghai Ni
- Hunan Joint International Research Center for Carbon Dioxide Resource Utilization, State Key Laboratory of Powder Metallurgy, School of Physics and Electronics, Central South University, Changsha, 410083, Hunan, P.R. China
| | - Wanru Liao
- Hunan Joint International Research Center for Carbon Dioxide Resource Utilization, State Key Laboratory of Powder Metallurgy, School of Physics and Electronics, Central South University, Changsha, 410083, Hunan, P.R. China
| | - Kang Liu
- Hunan Joint International Research Center for Carbon Dioxide Resource Utilization, State Key Laboratory of Powder Metallurgy, School of Physics and Electronics, Central South University, Changsha, 410083, Hunan, P.R. China
| | - Jiawei Chen
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, P.R. China
| | - Fangyang Liu
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, P.R. China
| | - Zongliang Zhang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, P.R. China
| | - Ming Jia
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, P.R. China
| | - Jie Li
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, P.R. China
| | - Junwei Fu
- Hunan Joint International Research Center for Carbon Dioxide Resource Utilization, State Key Laboratory of Powder Metallurgy, School of Physics and Electronics, Central South University, Changsha, 410083, Hunan, P.R. China
| | - Evangelina Pensa
- Nanoinstitut München, Fakultät für Physik, Ludwig-Maximilians-Universität München, 80539, München, Germany
| | - Liangxing Jiang
- School of Metallurgy and Environment, Central South University, Changsha, 410083, Hunan, P.R. China.,Hunan Provincial Key Laboratory of Nonferrous Value-added Metallurgy, Changsha, 410083, Hunan, P.R. China
| | - Zhenfeng Bian
- MOE Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai, 200234, P.R. China
| | - Emiliano Cortés
- Nanoinstitut München, Fakultät für Physik, Ludwig-Maximilians-Universität München, 80539, München, Germany
| | - Min Liu
- Hunan Joint International Research Center for Carbon Dioxide Resource Utilization, State Key Laboratory of Powder Metallurgy, School of Physics and Electronics, Central South University, Changsha, 410083, Hunan, P.R. China
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15
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Sun Y, Li G, Sun W, Zhou X. Research progress on the formation, detection methods and application in photocatalytic reduction of CO2 of oxygen vacancy. J CO2 UTIL 2023. [DOI: 10.1016/j.jcou.2022.102344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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16
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Peng DY, Zeng HY, Xiong J, Liu FY, Wang LH, Xu S, Yang ZL, Liu SG. Tuning oxygen vacancy in Bi 2WO 6 by heteroatom doping for enhanced photooxidation-reduction properties. J Colloid Interface Sci 2023; 629:133-146. [PMID: 36152571 DOI: 10.1016/j.jcis.2022.09.031] [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: 07/18/2022] [Revised: 08/29/2022] [Accepted: 09/04/2022] [Indexed: 11/16/2022]
Abstract
Heteroatom doping was recently regarded as an effective method to tune the band gap and improve the separation and transfer of photogenerated electron-hole pairs in semiconductor photocatalysts. Herein, a novel S,F-codoped Bi2WO6 (S,F-Bi2WO6) with suitable oxygen vacancies was synthesized via the hydrothermal-calcination and post-sulfurization, for efficient Cr(VI) reduction and methyl orange (MO) degradation under visible light. The amount of surface oxygen vacancies could be controlled by adjusting the S/F ratio during the doping process, which modulated the band structure and photogenerated charge behavior of Bi2WO6. The optimal S0.10F-Bi2WO6 exhibited an excellent photooxidation-reduction performance, which Cr(VI) reduction and MO degradation efficiencies were 1.6 and 2.6 times than those of the pristine Bi2WO6 without oxygen vacancy under visible-light, respectively. The enhanced photooxidation-reduction performance was because the right amount of oxygen vacancies could effectively narrow the bandgap and improve the separation efficiency of electron-hole pairs. Thus, this work offered a mild and simply approach for preparing heteroatom doped Bi2WO6 and a potential to be extended to the synthesis of other doped materials for environmental remediation.
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Affiliation(s)
- Di-Yang Peng
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, Hunan, China
| | - Hong-Yan Zeng
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, Hunan, China.
| | - Jie Xiong
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, Hunan, China
| | - Fang-Yuan Liu
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, Hunan, China
| | - Li-Hui Wang
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, Hunan, China
| | - Sheng Xu
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, Hunan, China
| | - Zhuo-Lin Yang
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, Hunan, China
| | - Shi-Guang Liu
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, Hunan, China
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17
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Zhao HP, Zhu ML, Shi HY, Zhou QQ, Chen R, Lin SW, Tong MH, Ji MH, Jiang X, Liao CX, Chen YX, Lu CZ. Cerium-Doped Iron Oxide Nanorod Arrays for Photoelectrochemical Water Splitting. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27249050. [PMID: 36558179 PMCID: PMC9780861 DOI: 10.3390/molecules27249050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/15/2022] [Accepted: 12/16/2022] [Indexed: 12/23/2022]
Abstract
In this work, a simple one-step hydrothermal method was employed to prepare the Ce-doped Fe2O3 ordered nanorod arrays (CFT). The Ce doping successfully narrowed the band gap of Fe2O3, which improved the visible light absorption performance. In addition, with the help of Ce doping, the recombination of electron/hole pairs was significantly inhibited. The external voltage will make the performance of the Ce-doped sample better. Therefore, the Ce-doped Fe2O3 has reached superior photoelectrochemical (PEC) performance with a high photocurrent density of 1.47 mA/cm2 at 1.6 V vs. RHE (Reversible Hydrogen Electrode), which is 7.3 times higher than that of pristine Fe2O3 nanorod arrays (FT). The Hydrogen (H2) production from PEC water splitting of Fe2O3 was highly improved by Ce doping to achieve an evolution rate of 21 μmol/cm2/h.
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Affiliation(s)
- Hai-Peng Zhao
- School of Rare Earth, Jiangxi University of Science and Technology, Ganzhou 341000, China
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare-Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, China
| | - Mei-Ling Zhu
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare-Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, China
- School of Rare Earths, University of Science and Technology of China, Hefei 230026, China
| | - Hao-Yan Shi
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare-Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, China
- College of Chemical Science, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qian-Qian Zhou
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare-Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, China
| | - Rui Chen
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare-Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, China
| | - Shi-Wei Lin
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare-Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, China
| | - Mei-Hong Tong
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare-Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, China
| | - Ming-Hao Ji
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare-Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, China
| | - Xia Jiang
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare-Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, China
| | - Chen-Xing Liao
- School of Rare Earth, Jiangxi University of Science and Technology, Ganzhou 341000, China
| | - Yan-Xin Chen
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare-Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, China
- College of Chemical Science, University of Chinese Academy of Sciences, Beijing 100049, China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350108, China
- Correspondence: (Y.-X.C.); (C.-Z.L.)
| | - Can-Zhong Lu
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
- Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare-Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen 361021, China
- School of Rare Earths, University of Science and Technology of China, Hefei 230026, China
- College of Chemical Science, University of Chinese Academy of Sciences, Beijing 100049, China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350108, China
- Correspondence: (Y.-X.C.); (C.-Z.L.)
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18
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Feng X, Sun T, Feng X, Chen L, Yang Y, Zhang F. Engineering the Near-Surface Structure of WO 3 by an Amorphous Layer with Trivalent Ni and Self-Adapting Oxygen Vacancies for Efficient Photocatalytic and Photoelectrochemical Acidic Oxygen Evolution Reaction. ACS APPLIED MATERIALS & INTERFACES 2022; 14:54769-54780. [PMID: 36469043 DOI: 10.1021/acsami.2c16839] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Exploiting an effective strategy to tailor the construction, composition, and local electronic structure of the photocatalyst surface is pivotal to photocatalytic activity, but remains challenging. Transition metal elements can boost the oxygen evolution reaction activity especially one like Ni in high oxidation states, whereas it is uneasy to prepare Ni3+ under mild conditions or play to their strengths in acidic conditions. In this article, we report a facile "etch and dope" synthesis of Ni3+-doped WO3 nanosheets with oxygen vacancies. Through detailed experimental and theoretical studies, it is established that the abundant oxygen vacancies and the doped Ni3+ ions in the near-surface amorphous layer can synergistically optimize the surface electronic structure of WO3 and the adsorption and desorption of intermediates. Impressively, the etched WO3 nanosheets coupled with Ni3+ offer a greatly promoted photocatalytic performance of 1.78 mmol g-1 h-1, and the photoanode achieves a photocurrent density of 2.11 mA cm-2 at 1.23 V versus reversible hydrogen electrode (VRHE). This work provides a new inspiration for rational manufacture of defects and high-valence metal ions in catalysts for photocatalytic and photoelectrochemical reactions.
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Affiliation(s)
- Xinyan Feng
- Powder Metallurgy Research Institute, Central South University, Changsha410083, P. R. China
| | - Tingting Sun
- Powder Metallurgy Research Institute, Central South University, Changsha410083, P. R. China
| | - Xuefan Feng
- Powder Metallurgy Research Institute, Central South University, Changsha410083, P. R. China
| | - Limiao Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha410083, P. R. China
| | - Yu Yang
- Powder Metallurgy Research Institute, Central South University, Changsha410083, P. R. China
| | - Fuqin Zhang
- Powder Metallurgy Research Institute, Central South University, Changsha410083, P. R. China
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19
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Zhao Z, Qu M, Zhu M, Shi H, Luo X, Guo T, Sun Q, Wang L, Zheng H. Crystal Facet-Modulated WO 3 Nanoplate Photoanode for Photoelectrochemical Glyoxal Semi-oxidation into Glyoxylic Acid. ACS APPLIED MATERIALS & INTERFACES 2022; 14:48752-48761. [PMID: 36251536 DOI: 10.1021/acsami.2c14442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Transforming glyoxal to value-added glyoxylic acid (GA) is highly desirable but challenging due to the uncontrollable over-oxidation. In this work, we report on a first demonstration of semi-oxidation of glyoxal with high selectivity (86.5%) and activity on WO3 nanoplate photoanode through the photoelectrochemical strategy. The optimization of reactivity was achieved via crystal facet regulation, showing a satisfactory GA production rate of 308.4 mmol m-2 h-2, 84.0% faradaic efficiency, and 4.3% total solar-to-glyoxylic acid efficiency on WO3 with enriched {200} facets at 1.6 V versus RHE. WO3 with a high {200} facet ratio exhibits more efficient electron-hole transfer kinetics, resulting in the facilitated formation of hydroxyl radicals (•OH) and glyoxal radicals. Meanwhile, the theoretical calculation results indicate that the high selectivity and activity come from the strong adsorption ability for glyoxal and the low reaction energy for glyoxal radical generation on the (200) facets of WO3. Moreover, the high energy demand toward oxalic acid production on WO3 leads to the exciting semi-oxidation process.
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Affiliation(s)
- Zhefei Zhao
- Department of Applied Chemistry, Zhejiang University of Technology, Hangzhou310032, P. R. China
| | - Mengnan Qu
- State Key Laboratory of Radiation Medicine and Protection, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, School for Radiological and Interdisciplinary Sciences, Soochow University, Suzhou215123, P. R. China
| | - Mengkai Zhu
- Department of Applied Chemistry, Zhejiang University of Technology, Hangzhou310032, P. R. China
| | - Hongmei Shi
- Department of Applied Chemistry, Zhejiang University of Technology, Hangzhou310032, P. R. China
| | - Xingyu Luo
- Department of Applied Chemistry, Zhejiang University of Technology, Hangzhou310032, P. R. China
| | - Tianyang Guo
- Department of Applied Chemistry, Zhejiang University of Technology, Hangzhou310032, P. R. China
| | - Qiao Sun
- State Key Laboratory of Radiation Medicine and Protection, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, School for Radiological and Interdisciplinary Sciences, Soochow University, Suzhou215123, P. R. China
| | - Lianzhou Wang
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, Brisbane, Queensland4072, Australia
| | - Huajun Zheng
- Department of Applied Chemistry, Zhejiang University of Technology, Hangzhou310032, P. R. China
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Zhejiang University of Technology, Hangzhou310032, P. R. China
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20
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Wu J, Liu J, Jin L, Hu B, Liu W. Hybrid Ce-Fe 2O 3/ZIF-67 Photoanode with Efficient Photoelectrochemical Water Oxidation Performance. Inorg Chem 2022; 61:12591-12598. [PMID: 35920803 DOI: 10.1021/acs.inorgchem.2c01491] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Surface states and slow water oxidation kinetics greatly limit the photoelectrochemical (PEC) water oxidation performance of Fe2O3. To solve the above problems, coupling Fe2O3 with a passivation layer and an oxygen evolution cocatalyst, respectively, is the common method. Though this method may improve its PEC performance, this also results in a low charge-transfer efficiency caused by the interface resistance between Fe2O3 and the modification materials (passivation layer and oxygen evolution cocatalyst). Therefore, it is important to identify a multifunctional modifier material to reduce the interfacial resistance due to the presence of multiple different materials. In this work, we introduced a thin cobalt-based metal-organic framework layer (ZIF-67) as a dual-functional material that acted as both a passivation layer and a water oxidation cocatalyst for a photoanode based on Ce-Fe2O3 nanorod arrays. The ZIF-67 layer inhibited charge carrier recombination by passivating the surface states. The PEC performance was improved due to the rich Co2+ photogenerated hole-capture sites, which facilitated charge transfer and separation. As expected, the Ce-Fe2O3/ZIF-67 photoanode exhibited superior water oxidation performance, with a photocurrent of 2.07 mA cm-2 at 1.23 VRHE, which is 1.74 times higher than that of the Ce-Fe2O3 photoanode. The onset potential was negatively shifted by 71 mV. This study provides basic insights and a strategy for reducing interfacial resistance in hybrid materials.
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Affiliation(s)
- Juan Wu
- Henan Key Laboratory of Rare Earth Functional Materials, International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University, Zhoukou 466001, P. R. China.,Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Jin Liu
- Henan Key Laboratory of Rare Earth Functional Materials, International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University, Zhoukou 466001, P. R. China
| | - Lin Jin
- Henan Key Laboratory of Rare Earth Functional Materials, International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University, Zhoukou 466001, P. R. China
| | - Bin Hu
- Henan Key Laboratory of Rare Earth Functional Materials, International Joint Research Laboratory for Biomedical Nanomaterials of Henan, Zhoukou Normal University, Zhoukou 466001, P. R. China
| | - Weisheng Liu
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
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21
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Liu X, Huang C, Ouyang B, Du Y, Fu B, Du Z, Ju Q, Ma J, Li A, Kan E. Enhancement of Mass and Charge Transfer during Carbon Dioxide Photoreduction by Enhanced Surface Hydrophobicity without a Barrier Layer. Chemistry 2022; 28:e202201034. [DOI: 10.1002/chem.202201034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Xuan Liu
- MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing Department of Applied Physics Nanjing University of Science and Technology Nanjing 210094 P. R. China
| | - Chengxi Huang
- MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing Department of Applied Physics Nanjing University of Science and Technology Nanjing 210094 P. R. China
| | - Bo Ouyang
- MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing Department of Applied Physics Nanjing University of Science and Technology Nanjing 210094 P. R. China
| | - Yongping Du
- MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing Department of Applied Physics Nanjing University of Science and Technology Nanjing 210094 P. R. China
| | - Boyu Fu
- MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing Department of Applied Physics Nanjing University of Science and Technology Nanjing 210094 P. R. China
| | - Zhengwei Du
- MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing Department of Applied Physics Nanjing University of Science and Technology Nanjing 210094 P. R. China
| | - Qiang Ju
- MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing Department of Applied Physics Nanjing University of Science and Technology Nanjing 210094 P. R. China
| | - Jingjing Ma
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering Ningxia University Ningxia 750021 P. R. China
| | - Ang Li
- MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing Department of Applied Physics Nanjing University of Science and Technology Nanjing 210094 P. R. China
| | - Erjun Kan
- MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing Department of Applied Physics Nanjing University of Science and Technology Nanjing 210094 P. R. China
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22
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Wang L, Lian W, Liu B, Lv H, Zhang Y, Wu X, Wang T, Gong J, Chen T, Xu H. A Transparent, High-Performance, and Stable Sb 2 S 3 Photoanode Enabled by Heterojunction Engineering with Conjugated Polycarbazole Frameworks for Unbiased Photoelectrochemical Overall Water Splitting Devices. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2200723. [PMID: 35580906 DOI: 10.1002/adma.202200723] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 04/13/2022] [Indexed: 06/15/2023]
Abstract
Developing low-cost, high-performance, and durable photoanodes is essential in solar-driven photoelectrochemical (PEC) energy conversion. Sb2 S3 is a low-bandgap (≈1.7 eV) n-type semiconductor with a maximum theoretical solar conversion efficiency of ≈28% for PEC water splitting. However, bulk Sb2 S3 exhibits opaque characteristics and suffers from severe photocorrosion, and thus the use of Sb2 S3 as a photoanode material remains underexploited. This study describes the design and fabrication of a transparent Sb2 S3 -based photoanode by conformably depositing a thin layer of conjugated polycarbazole frameworks (CPF-TCzB) onto the Sb2 S3 film. This structural design creates a type-II heterojunction between the CPF-TCzB and the Sb2 S3 with a suitable band-edge energy offset, thereby, greatly enhancing the charge separation efficiency. The CPF-TCzB/Sb2 S3 hybrid photoanode exhibits a remarkable photocurrent density of 10.1 mA cm-2 at 1.23 V vs reversible hydrogen electrode. Moreover, the thin CPF-TCzB overlayer effectively inhibits photocorrosion of the Sb2 S3 and enables long-term operation for at least 100 h with ≈10% loss in photocurrent density. Furthermore, a standalone unbiased PEC tandem device comprising a CPF-TCzB/Sb2 S3 photoanode and a back-illuminated Si photocathode can achieve a record solar-to-hydrogen conversion efficiency of 5.21%, representing the most efficient PEC water splitting device of its kind.
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Affiliation(s)
- Lei Wang
- Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Weitao Lian
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Bin Liu
- School of Chemical Engineering and Technology, Key Laboratory for Green Chemical Technology of Ministry of Education, Tianjin University, Tianjin, 300072, China
| | - Haifeng Lv
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Ying Zhang
- Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Xiaojun Wu
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Tuo Wang
- School of Chemical Engineering and Technology, Key Laboratory for Green Chemical Technology of Ministry of Education, Tianjin University, Tianjin, 300072, China
| | - Jinlong Gong
- School of Chemical Engineering and Technology, Key Laboratory for Green Chemical Technology of Ministry of Education, Tianjin University, Tianjin, 300072, China
| | - Tao Chen
- Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Hangxun Xu
- Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China
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23
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Zhao F, Sheng H, Sun Q, Wang J, Liu Q, Hu Z, He B, Wang Y, Li Z, Liu X. Harvesting the infrared part of solar light to promote charge transfer in Bi 2S 3/WO 3 photoanode for enhanced photoelectrochemical water splitting. J Colloid Interface Sci 2022; 621:267-274. [PMID: 35461141 DOI: 10.1016/j.jcis.2022.04.052] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/05/2022] [Accepted: 04/07/2022] [Indexed: 01/10/2023]
Abstract
Infrared light absorbed by semiconductors hardly contributes to the solar energy conversion due to its low photon energy. Herein, photothermal effect activated by infrared part of solar light is introduced to promote the photoelectrochemical (PEC) water splitting of photoanodes. Narrow band-gap semiconductor Bi2S3 is deposited on the surface of WO3 nanosheets, exhibiting a broad-spectral response. In addition to the enhanced density of photo-generated electrons, significant temperature elevation is observed for the Bi2S3/WO3 composite photoanode under the illumination of infrared part of solar light because of the photothermal conversion property of Bi2S3. The moderately enhanced temperature accelerates charge carrier migration and finally increases the efficiency of solar energy conversion. With the assistance of photothermal effect, a remarkable photocurrent density of 4.05 mA cm-2 at 1.23 V vs. reversible reference electrode (VRHE) is achieved by Bi2S3/WO3 composite photoanode, over 880% higher than that of the pristine WO3. The introduction of photothermal effect activated by infrared light provides general and robust strategy to promote the PEC performance of photoanodes.
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Affiliation(s)
- Feifan Zhao
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Hexuan Sheng
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Qipei Sun
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Jingnan Wang
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Qian Liu
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Zhifu Hu
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Bing He
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Yang Wang
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Zhen Li
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China
| | - Xueqin Liu
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China.
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24
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Yu M, Liang H, Zhan R, Liu C, Guo J, Sun Y, Xu L, Niu J. Bimetal single atom on defect-tailoring carbon nitride that boosts photocatalytic hydrogen evolution and superfast contaminant degradation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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25
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Li S, Xu W, Meng L, Tian W, Li L. Recent Progress on Semiconductor Heterojunction‐Based Photoanodes for Photoelectrochemical Water Splitting. SMALL SCIENCE 2022. [DOI: 10.1002/smsc.202100112] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Affiliation(s)
- Shengnan Li
- School of Physical Science and Technology Jiangsu Key Laboratory of Thin Films Center for Energy Conversion Materials & Physics (CECMP) Soochow University Suzhou 215006 P. R. China
| | - Weiwei Xu
- School of Physical Science and Technology Jiangsu Key Laboratory of Thin Films Center for Energy Conversion Materials & Physics (CECMP) Soochow University Suzhou 215006 P. R. China
| | - Linxing Meng
- School of Physical Science and Technology Jiangsu Key Laboratory of Thin Films Center for Energy Conversion Materials & Physics (CECMP) Soochow University Suzhou 215006 P. R. China
| | - Wei Tian
- School of Physical Science and Technology Jiangsu Key Laboratory of Thin Films Center for Energy Conversion Materials & Physics (CECMP) Soochow University Suzhou 215006 P. R. China
| | - Liang Li
- School of Physical Science and Technology Jiangsu Key Laboratory of Thin Films Center for Energy Conversion Materials & Physics (CECMP) Soochow University Suzhou 215006 P. R. China
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26
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Enhanced Photoelectrochemical Water Oxidation with Ferrihydrite Decorated WO3. Catal Letters 2021. [DOI: 10.1007/s10562-021-03856-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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27
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Yu Z, Huang Q, Jiang X, Lv X, Xiao X, Wang M, Shen Y, Wittstock G. Effect of a Cocatalyst on a Photoanode in Water Splitting: A Study of Scanning Electrochemical Microscopy. Anal Chem 2021; 93:12221-12229. [PMID: 34461018 DOI: 10.1021/acs.analchem.1c01235] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
With a proper band gap of ∼2.4 eV for solar light absorption and suitable valence band edge position for oxygen evolution, scheelite-monoclinic bismuth vanadate (BiVO4) has become one of the most attractive photocatalysts for efficient visible-light-driven photoelectrochemical (PEC) water splitting. Several studies have indicated that surface modification of BiVO4 with a cocatalyst such as NiFe layered double hydroxide (LDH) can significantly increase the PEC water splitting performance of the catalyst. Herein, we experimentally investigated the charge transfer dynamics and charge carrier recombination processes by scanning electrochemical microscopy (SECM) with the feedback mode on the surface of BiVO4 and BiVO4/NiFe-LDH as model samples. The ratio of rate constants for photogenerated hole (kh+0) to electron (ke-0) via the photocatalyst of BiVO4/NiFe-LDH reacting with the redox couple is found to be five times larger than that of BiVO4 under illumination. In this case, the ratio of the rate constants kh+0/ke-0 stands for the interfacial charge recombination process. This implies the cocatalyst NiFe-LDH suppresses the electron back transfer greatly and finally reduces the surface recombination. Control experiments with cocatalysts CoPi and RuOx onto BiVO4 further verify this conclusion. Therefore, the SECM characterization allows us to make an overall analysis on the function of cocatalysts in the PEC water splitting system.
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Affiliation(s)
- Zehui Yu
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Qikang Huang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China.,China-EU Institute for Clean and Renewable Energy, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Xingxing Jiang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Xiaowei Lv
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Xin Xiao
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Mingkui Wang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Yan Shen
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Gunther Wittstock
- School of Mathematics and Science, Chemistry Department, Carlvon Ossietzky University of Oldenburg, D-26111 Oldenburg, Germany
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