1
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Wang Y, Li L, Wang S, Dong X, Ding C, Mu Y, Cui M, Hu T, Meng C, Zhang Y. Anion Structure Regulation of Cobalt Silicate Hydroxide Endowing Boosted Oxygen Evolution Reaction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2401394. [PMID: 38709222 DOI: 10.1002/smll.202401394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 04/12/2024] [Indexed: 05/07/2024]
Abstract
Transition metal silicates (TMSs) are attempted for the electrocatalyst of oxygen evolution reaction (OER) due to their special layered structure in recent years. However, defects such as low theoretical activity and conductivity limit their application. Researchers always prefer to composite TMSs with other functional materials to make up for their deficiency, but rarely focus on the effect of intrinsic structure adjustment on their catalytic activity, especially anion structure regulation. Herein, applying the method of interference hydrolysis and vacancy reserve, new silicate vacancies (anionic regulation) are introduced in cobalt silicate hydroxide (CoSi), named SV-CoSi, to enlarge the number and enhance the activity of catalytic sites. The overpotential of SV-CoSi declines to 301 mV at 10 mA cm-2 compared to 438 mV of CoSi. Source of such improvement is verified to be not only the increase of active sites, but also the positive effect on the intrinsic activity due to the enhancement of cobalt-oxygen covalence with the variation of anion structure by density functional theory (DFT) method. This work demonstrates that the feasible intrinsic anion structure regulation can improve OER performance of TMSs and provides an effective idea for the development of non-noble metal catalyst for OER.
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Affiliation(s)
- Yang Wang
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Longmei Li
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Shengguo Wang
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Xueying Dong
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Chongtao Ding
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Yang Mu
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
- College of Environmental and Chemical Engineering, Dalian University, Dalian, 116622, China
| | - Miao Cui
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Tao Hu
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Changgong Meng
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
- College of Environmental and Chemical Engineering, Dalian University, Dalian, 116622, China
| | - Yifu Zhang
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
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2
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Jung J, Jeong JR, Dang Van C, Yoo HY, Lee MH. Morphology-Controlled ZnO@ZnWO 4 Hetero-Nanostructures for Efficient Photooxidation of Water in Near-Neutral pH. ACS APPLIED MATERIALS & INTERFACES 2024; 16:4700-4707. [PMID: 38241524 DOI: 10.1021/acsami.3c16104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2024]
Abstract
One-dimensional ZnO nanorods (NRs) have been extensively studied as photoanodes because of their unique optical properties, high electron mobility, and suitable band positions for water oxidation. However, their practical efficiency is often compromised by chemical instability during water oxidation and high carrier recombination rates. To overcome this issue, precise morphological control of ZnO@ZnWO4 core-shell structured photoanodes, featuring a ZnO core and a ZnWO4 shell was used. This was accomplished by depositing WO3 onto hydrothermally grown ZnO NRs using the thermal chemical vapor deposition process. The photoelectrochemical performance of ZnO@ZnWO4 with an optimized morphology outperforms that of pristine ZnO NRs. Systematic optical and electrochemical analyses of ZnO@ZnWO4 demonstrated that the enhancement is attributed to the enhanced charge transfer efficiency facilitated by the optimized ZnWO4 shells.
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Affiliation(s)
- Jaemin Jung
- Department of Applied Chemistry, Kyung Hee University, Yongin, Gyeonggi 17104, Korea
| | - Jae Ryeol Jeong
- Department of Applied Chemistry, Kyung Hee University, Yongin, Gyeonggi 17104, Korea
| | - Cu Dang Van
- Department of Applied Chemistry, Kyung Hee University, Yongin, Gyeonggi 17104, Korea
| | - Hye Yeon Yoo
- Department of Applied Chemistry, Kyung Hee University, Yongin, Gyeonggi 17104, Korea
| | - Min Hyung Lee
- Department of Applied Chemistry, Kyung Hee University, Yongin, Gyeonggi 17104, Korea
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3
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Zhang S, Du P, Xiao H, Wang Z, Zhang R, Luo W, An J, Gao Y, Lu B. Fast Interfacial Carrier Dynamics Modulated by Bidirectional Charge Transport Channels in ZnIn 2 S 4 -based Composite Photoanodes Probed by Scanning Photoelectrochemical Microscopy. Angew Chem Int Ed Engl 2024; 63:e202315763. [PMID: 38029382 DOI: 10.1002/anie.202315763] [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: 10/18/2023] [Revised: 11/24/2023] [Accepted: 11/28/2023] [Indexed: 12/01/2023]
Abstract
Limited charge separation/transport efficiency remains the primary obstacle of achieving satisfying photoelectrochemical (PEC) water splitting performance. Therefore, it is essential to develop diverse interfacial engineering strategies to mitigate charge recombination. Despite obvious progress having been made, most works only considered a single-side modulation in either the electrons of conduction band or the holes of valence band in a semiconductor photoanode, leading to a limited PEC performance enhancement. Beyond this conventional thinking, we developed a novel coupling modification strategy to achieve a composite electrode with bidirectional carrier transport for a better charge separation, in which Ti2 C3 Tx MXene quantum dots (MQDs) and α-Fe2 O3 nanodots (FO) are anchored on the surface of ZnIn2 S4 (ZIS) nanoplates, resulting in markedly improved PEC water splitting of pure ZIS photoanode. Systematic studies indicated that the bidirectional charge transfer pathways were stimulated due to MQDs as "electron extractor" and S-O bonds as carriers transport channels, which synergistically favors significantly enhanced charge separation. The enhanced kinetic behavior at the FO/MQDs/ZIS interfaces was systematically and quantitatively evaluated by a series of methods, especially scanning photoelectrochemical microscopy. This work may deepen our understanding of interfacial charge separation, and provide valuable guidance for the rational design and fabrication of high-performance composite electrodes.
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Affiliation(s)
- Shengya Zhang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, P. R. China
| | - Peiyao Du
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, P. R. China
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China
| | - Hui Xiao
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, P. R. China
| | - Ze Wang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, P. R. China
| | - Rongfang Zhang
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, P. R. China
| | - Wei Luo
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, P. R. China
| | - Juan An
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, P. R. China
| | - Yuling Gao
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, P. R. China
| | - BingZhang Lu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, P. R. China
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P. R. China
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4
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Zhang H, He Y, Bao X, Wang Z, Jiang W, Zheng L, Fan Y, Zheng Z, Cheng H, Wang P, Liu Y, Wang Z, Huang B. Fabrication of Hematite Photoanode Consisting of (110)-Oriented Single Crystals. CHEMSUSCHEM 2023; 16:e202300666. [PMID: 37505451 DOI: 10.1002/cssc.202300666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/06/2023] [Indexed: 07/29/2023]
Abstract
In this work, α-Fe2 O3 photoanode consisted of (110)-oriented α-Fe2 O3 single crystals were synthesized by a facile hydrothermal method. By using particular additive (C4 MimBF4 ) and regulation of hydrothermal reaction time, the Fe-25 consisted of a single-layer of highly crystalline (110)-oriented crystals with fewer grain boundaries, which was vertically grown on the substrate. As a result, the charge separation efficiency and photoelectrochemical (PEC) performance of Fe-25A (Fe-25 after dehydration treatment) have been greatly improved. Fe-25A yields a photocurrent of 1.34 mA cm-2 (1.23 V vs RHE) and an incident photon-to-current conversion efficiency (IPCE) of 31.95 % (380 nm). With the assistance of cobalt-phosphate water oxidation catalyst (Co-Pi), the PEC performance could be further improved by enhancing the holes transfer at electrode/electrolyte interface and inhibiting surface recombination. Fe-25A/Co-Pi yields a photocurrent of 2.67 mA cm-2 (1.23 V vs RHE) and IPCE value of 50.8 % (380 nm), which is 3.67 times and 2.39 times as that of Fe-2A/Co-Pi. Our work provides a simple method to fabricate highly efficient Fe2 O3 photoanodes consist of characteristic (110)-oriented single crystals with high crystallinity and high quality interface contact to enhance charge separation efficiencies.
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Affiliation(s)
- Haipeng Zhang
- State Key Laboratory of Crystal MaterialsShandong University, Jinan, 250100, P. R. China
| | - Yujie He
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Xiaolei Bao
- State Key Laboratory of Crystal MaterialsShandong University, Jinan, 250100, P. R. China
| | - Zhaoqi Wang
- State Key Laboratory of Crystal MaterialsShandong University, Jinan, 250100, P. R. China
| | - Weiyi Jiang
- State Key Laboratory of Crystal MaterialsShandong University, Jinan, 250100, P. R. China
| | - Liren Zheng
- State Key Laboratory of Crystal MaterialsShandong University, Jinan, 250100, P. R. China
| | - Yuchen Fan
- Department of Hepatology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250100, P. R. China
| | - Zhaoke Zheng
- State Key Laboratory of Crystal MaterialsShandong University, Jinan, 250100, P. R. China
| | - Hefeng Cheng
- State Key Laboratory of Crystal MaterialsShandong University, Jinan, 250100, P. R. China
| | - Peng Wang
- State Key Laboratory of Crystal MaterialsShandong University, Jinan, 250100, P. R. China
| | - Yuanyuan Liu
- State Key Laboratory of Crystal MaterialsShandong University, Jinan, 250100, P. R. China
| | - Zeyan Wang
- State Key Laboratory of Crystal MaterialsShandong University, Jinan, 250100, P. R. China
| | - Baibiao Huang
- State Key Laboratory of Crystal MaterialsShandong University, Jinan, 250100, P. R. China
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5
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Wang X, Ma S, Liu B, Wang S, Huang W. Imperfect makes perfect: defect engineering of photoelectrodes towards efficient photoelectrochemical water splitting. Chem Commun (Camb) 2023; 59:10044-10066. [PMID: 37551587 DOI: 10.1039/d3cc02843g] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/09/2023]
Abstract
Photoelectrochemical (PEC) water splitting for hydrogen evolution has been considered as a promising technology to solve the energy and environmental issues. However, the solar-to-hydrogen (STH) conversion efficiencies of current PEC systems are far from meeting the commercial demand (10%) due to the lack of efficient photoelectrode materials. The recent rapid development of defect engineering of photoelectrodes has significantly improved the PEC performance, which is expected to break through the bottleneck of low STH efficiency. In this review, the category and the construction methods of different defects in photoelectrode materials are summarized. Based on the in-depth summary and analysis of existing reports, the PEC performance enhancement mechanism of defect engineering is critically discussed in terms of light absorption, carrier separation and transport, and surface redox reactions. Finally, the application prospects and challenges of defect engineering for PEC water splitting are presented, and the future research directions in this field are also proposed.
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Affiliation(s)
- Xin Wang
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China.
| | - Siqing Ma
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China.
| | - Boyan Liu
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China.
| | - Songcan Wang
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China.
| | - Wei Huang
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE), Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China.
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6
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Zhang G, Lu C, Li C, Li S, Zhao X, Nie K, Wang J, Feng K, Zhong J. CoMoO 4-modified hematite with oxygen vacancies for high-efficiency solar water splitting. Phys Chem Chem Phys 2023; 25:13410-13416. [PMID: 37161656 DOI: 10.1039/d3cp01192e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Hematite is a potential photoelectrode for photoelectrochemical (PEC) water splitting. Nevertheless, its water oxidation efficiency is highly limited by its significant photogenerated carrier recombination, poor conductivity and slow water oxidation kinetics. Herein, under low-vacuum (LV) conditions, we fabricated a CoMoO4 layer on oxygen-vacancy-modified hematite (CoMo-Fe2O3 (LV)) for the first time for efficient solar water splitting. The existence of oxygen vacancies can significantly facilitate the electrical conductivity, while the large onset potential along with oxygen vacancies can be lowered by the CoMoO4 with accelerated water oxidation kinetics. Therefore, a high photocurrent density of 3.53 mA cm-2 at 1.23 VRHE was obtained for the CoMo-Fe2O3 (LV) photoanode. Moreover, it can be further coupled with the FeNiOOH co-catalyst to reach a benchmark photocurrent of 4.18 mA cm-2 at 1.23 VRHE, which is increased around 4-fold compared with bare hematite (0.90 mA cm-2). The combination of CoMoO4, FeNiOOH, and oxygen vacancies may be used as a reasonable strategy for developing high-efficiency hematite-based photoelectrodes for solar water oxidation.
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Affiliation(s)
- Gaoteng Zhang
- Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China.
| | - Cheng Lu
- Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China.
| | - Chang Li
- Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China.
| | - Shuo Li
- Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China.
| | - Xiaoquan Zhao
- Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China.
| | - Kaiqi Nie
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Jiaou Wang
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Kun Feng
- Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China.
| | - Jun Zhong
- Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China.
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7
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Tian K, Wu L, Chai H, Gao L, Wang M, Niu H, Chen L, Jin J. Enhancement of charge separation and hole utilization in a Ni 2P 2O 7-Nd-BiVO 4 photoanode for efficient photoelectrochemical water oxidation. J Colloid Interface Sci 2023; 644:124-133. [PMID: 37105036 DOI: 10.1016/j.jcis.2023.04.064] [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: 02/20/2023] [Revised: 04/05/2023] [Accepted: 04/16/2023] [Indexed: 04/29/2023]
Abstract
It is necessary for photoelectrochemical (PEC) water splitting to reduce the electron-hole recombination rate and enhance the water oxidation reaction kinetics. Here, we prepared Ni2P2O7-Nd-BiVO4 composite photoanodes by coupling Ni2P2O7 co-catalysts to neodymium (Nd)-doped BiVO4 surfaces through photo-assisted electrodeposition. The Ni2P2O7-Nd-BiVO4 photoanode exhibits a high photocurrent density of 3.6 mA cm-2 at 1.23 V vs reversible hydrogen electrode (RHE), which is three times higher than that of the bare BiVO4 (1.2 mA cm-2). Detailed characterizations demonstrate that Nd doping reduces the band gap, significantly increases the carrier density and effectively reduces the charge transfer resistance. More importantly, the Ni2P2O7 co-catalyst has multiple roles. Specifically, it can act as a hole extraction layer to accelerate hole migration and inhibit hole-electron recombination. At the same time, it significantly improves the water oxidation reaction kinetics. In addition, it also provides more water oxidation active sites. This work provides ideas for the design and study of efficient BiVO4-based photoanodes.
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Affiliation(s)
- Kaige Tian
- College of Chemical Engineering, Northwest Minzu University, Lanzhou, Gansu 730030, PR China
| | - Lan Wu
- College of Chemical Engineering, Northwest Minzu University, Lanzhou, Gansu 730030, PR China.
| | - Huan Chai
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), The Key Laboratory of Catalytic Engineering of Gansu Province, Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, PR China
| | - Lili Gao
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), The Key Laboratory of Catalytic Engineering of Gansu Province, Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, PR China
| | - Meng Wang
- College of Chemical Engineering, Northwest Minzu University, Lanzhou, Gansu 730030, PR China
| | - Huilin Niu
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), The Key Laboratory of Catalytic Engineering of Gansu Province, Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, PR China
| | - Li Chen
- College of Chemical Engineering, Northwest Minzu University, Lanzhou, Gansu 730030, PR China
| | - Jun Jin
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), The Key Laboratory of Catalytic Engineering of Gansu Province, Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, PR China.
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8
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Tian K, Wu L, Yang B, Chai H, Gao L, Wang M, Jin J. Anchored lithium-rich manganese nanoparticles boosting Nd-BiVO4 photoanode for efficient solar-driven water splitting. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.130976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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9
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Surface Passivation decoration of Amorphous Cobalt Silicate on Molybdenum-Doped Bismuth Vanadate for Efficient Photoelectrochemical Water Oxidation. Chem Phys Lett 2023. [DOI: 10.1016/j.cplett.2023.140330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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10
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Chong R, Wang Z, Fan M, Wang L, Chang Z, Zhang L. Hematite decorated with nanodot-like cobalt (oxy)hydroxides for boosted photoelectrochemical water oxidation. J Colloid Interface Sci 2023; 629:217-226. [PMID: 36152578 DOI: 10.1016/j.jcis.2022.09.024] [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: 05/24/2022] [Revised: 08/26/2022] [Accepted: 09/04/2022] [Indexed: 11/22/2022]
Abstract
Photoelectrochemical (PEC) water splitting has been considered as an alternative process to produce green hydrogen. However, the energy conversion efficiency of PEC systems was still limited by the inefficient photoanode. Cocatalysts decoration is regarded as an efficient strategy for improving PEC performance of photoanode. In this work, nanodot-like cobalt (oxy)hydroxides was rationally decorated on hematite to fabricate CoOOH/Fe2O3 photoanode. The resulted CoOOH/Fe2O3 exhibits a high photocurrent density of 1.92 mA cm-2 at 1.23 V vs. RHE, which is 2.6 times than that of bare Fe2O3. In addition, the onset potential displays a cathodic shift of ca. 110 mV, indicating that CoOOH can efficiently accelerate water oxidation kinetics over Fe2O3. The comprehensive PEC and electrochemical characterizations reveal that CoOOH could not only provide abundant accessible Co active sites for water oxidation, but also could passivate the surface states of Fe2O3, thus increase the carrier density and decrease the interfacial resistance. As a result, the PEC water oxidation performance over Fe2O3 was significantly boosted. This work supports that the roles of CoOOH cocatalyst is generic and such CoOOH could be used for other semiconductor-based photoanodes for outstanding PEC water splitting performance.
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Affiliation(s)
- Ruifeng Chong
- Henan Provincial Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloys, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, Henan Engineering Research Center for Control and Remediation of Soil Heavy Pollution, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Zhenzhen Wang
- Henan Provincial Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloys, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, Henan Engineering Research Center for Control and Remediation of Soil Heavy Pollution, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Ming Fan
- Henan Provincial Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloys, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, Henan Engineering Research Center for Control and Remediation of Soil Heavy Pollution, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Li Wang
- Henan Provincial Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloys, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, Henan Engineering Research Center for Control and Remediation of Soil Heavy Pollution, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Zhixian Chang
- Henan Provincial Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloys, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, Henan Engineering Research Center for Control and Remediation of Soil Heavy Pollution, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China.
| | - Ling Zhang
- Henan Provincial Engineering Research Center of Green Anticorrosion Technology for Magnesium Alloys, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, Henan Engineering Research Center for Control and Remediation of Soil Heavy Pollution, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China.
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11
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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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12
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Chen X, Yin H, Yang X, Zhang W, Xiao D, Lu Z, Zhang Y, Zhang P. Co-Doped Fe 3S 4 Nanoflowers for Boosting Electrocatalytic Nitrogen Fixation to Ammonia under Mild Conditions. Inorg Chem 2022; 61:20123-20132. [PMID: 36441161 DOI: 10.1021/acs.inorgchem.2c03578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Compared with the Haber Bosch process, the electrochemical nitrogen reduction reaction (NRR) under mild conditions provides an alternative and promising route for ammonia synthesis due to its green and sustainable features. However, the great energy barrier to break the stable N≡N bond hinders the practical application of NRR. Though Fe is the only common metal element in all biological nitrogenases in nature, there is still a lack of study on developing highly efficient and low-cost Fe-based catalysts for N2 fixation. Herein, Co-doped Fe3S4 nanoflowers were fabricated as the intended catalyst for NRR. The results indicate that 4% Co-doped Fe3S4 nanoflowers achieve a high Faradaic efficiency of 17% and a NH3 yield rate of 37.5 μg·h-1·mg-1cat. at -0.55 V versus RHE potential in 0.1 M HCl, which is superior to most Fe-based catalysts. The introduction of Co atoms can not only shift the partial density states of Fe3S4 toward the Fermi level but also serve as new active centers to promote N2 absorption, lowering the energy barrier of the potential determination step to accelerate the catalytic process. This work paves a pathway of the morphology and doping engineering for Fe-based electrocatalysts to enhance ammonia synthesis.
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Affiliation(s)
- Xue Chen
- School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, China
| | - Hongfei Yin
- School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, China
| | - Xiaoyong Yang
- State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China.,Department of Materials Science and Engineering, KTH Royal Institute of Technology, Stockholm SE-100 44, Sweden
| | - Weining Zhang
- School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, China
| | - Dongdong Xiao
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhen Lu
- Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Yongzheng Zhang
- School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, China
| | - Ping Zhang
- School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, China
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13
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Selvasundarasekar SS, Bijoy TK, Kumaravel S, Karmakar A, Madhu R, Bera K, Nagappan S, Dhandapani HN, Mersal GAM, Ibrahim MM, Sarkar D, Yusuf SM, Lee SC, Kundu S. Effective Formation of a Mn-ZIF-67 Nanofibrous Network via Electrospinning: An Active Electrocatalyst for OER in Alkaline Medium. ACS APPLIED MATERIALS & INTERFACES 2022; 14:46581-46594. [PMID: 36194123 DOI: 10.1021/acsami.2c12643] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Finding the active center in a bimetallic zeolite imidazolate framework (ZIF) is highly crucial for the electrocatalytic oxygen evolution reaction (OER). In the present study, we constructed a bimetallic ZIF system with cobalt and manganese metal ions and subjected it to an electrospinning technique for feasible fiber formation. The obtained nanofibers delivered a lower overpotential value of 302 mV at a benchmarking current density of 10 mA cm-2 in an electrocatalytic OER study under alkaline conditions. The obtained Tafel slope and charge-transfer resistance values were 125 mV dec-1 and 4 Ω, respectively. The kinetics of the reaction is mainly attributed from the ratio of metals (Co and Mn) present in the catalyst. Jahn-Teller distortion reveals that the electrocatalytic active center on the Mn-incorporated ZIF-67 nanofibers (Mn-ZIF-67-NFs) was found to be Mn3+ along with the Mn2+ and Co2+ ions on the octahedral and tetrahedral sites, respectively, where Co2+ ions tend to suppress the distortion, which is well supported by density functional theory analysis, molecular orbital study, and magnetic studies.
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Affiliation(s)
- Sam Sankar Selvasundarasekar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad201002, India
- CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi630003, Tamil Nadu, India
| | - T K Bijoy
- Indo-Korea Science and Technology Center (IKST), Jakkur, Bengaluru560065, India
| | - Sangeetha Kumaravel
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad201002, India
- CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi630003, Tamil Nadu, India
| | - Arun Karmakar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad201002, India
- CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi630003, Tamil Nadu, India
| | - Ragunath Madhu
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad201002, India
- CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi630003, Tamil Nadu, India
| | - Krishnendu Bera
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad201002, India
- CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi630003, Tamil Nadu, India
| | - Sreenivasan Nagappan
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad201002, India
- CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi630003, Tamil Nadu, India
| | - Hariharan N Dhandapani
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad201002, India
- CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi630003, Tamil Nadu, India
| | - Gaber A M Mersal
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif21944, Saudi Arabia
| | - Mohamed M Ibrahim
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif21944, Saudi Arabia
| | - Debashish Sarkar
- Technical Physics Division, Bhabha Atomic Research Centre, Mumbai400085, India
| | - Seikh Mohammad Yusuf
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai400085, India
| | - Seung-Cheol Lee
- Indo-Korea Science and Technology Center (IKST), Jakkur, Bengaluru560065, India
- Electronic Materials Research Center, KIST, Seoul136-791, South Korea
| | - Subrata Kundu
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad201002, India
- CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi630003, Tamil Nadu, India
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14
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Chai H, Gao L, Jin J. Revealing the Essential Role of Iron Phosphide and its Surface-Evolved Species in the Photoelectrochemical Water Oxidation by Gd-Doped Hematite Photoanode. CHEMSUSCHEM 2022; 15:e202201030. [PMID: 35761757 DOI: 10.1002/cssc.202201030] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/24/2022] [Indexed: 06/15/2023]
Abstract
Phosphates are easily derived from transition metal phosphides under natural conditions, and the real roles of these two in catalytic reactions are not yet clear. Here, a multiphase FeP/Gd-Fe2 O3 shell-core structure photoanode was constructed and explored regarding the real role of FeP and its surface-reconstructed iron phosphate (Fe-Pi) in photoelectrochemical water oxidation. The FeP/Gd-Fe2 O3 photoanode exhibited an excellent photocurrent density of 2.56 mA cm-2 at 1.23 V versus the reversible hydrogen electrode, up to 4 times greater than those of the pristine α-Fe2 O3 (0.64 mA cm-2 ). Detailed studies showed that FeP could act as a photosensitizer to enhance light absorption and as a conductive layer to accelerate charge transfer. The FeP significantly enhanced the incident photon-to-current conversion efficiency of the photoanode and improved the electron transition within the photoanode. Naturally evolved Fe-Pi on the surface provided more active sites for water oxidation. They effectively passivated the surface capture state and synergistically inhibited the electron-hole recombination. Moreover, the in-situ constructed multiphase catalyst had a smaller interfacial contact resistance than the intentionally decorative cocatalyst. This work provides new insight into the understanding of the essential role of transition metal phosphides and their surface-reconstructed species in catalytic reactions.
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Affiliation(s)
- Huan Chai
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Catalytic Engineering of Gansu Province, Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Lili Gao
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Catalytic Engineering of Gansu Province, Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Jun Jin
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Catalytic Engineering of Gansu Province, Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
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15
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Pal D, Maity D, Sarkar A, Sarkar D, Khan GG. Effect of defect-rich Co-CeOx OER cocatalyst on the photocarrier dynamics and electronic structure of Sb-doped TiO2 nanorods photoanode. J Colloid Interface Sci 2022; 620:209-220. [DOI: 10.1016/j.jcis.2022.04.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/28/2022] [Accepted: 04/01/2022] [Indexed: 01/20/2023]
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16
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Bu Q, Liu X, Zhao Q, Lu G, Zhu X, Liu Q, Xie T. Unveiling the influence of 5,10,15,20-tetrakis (4-carboxyl phenyl) porphyrin on the photogenerated charge behavior and photoelectrochemical water oxidation of hematite photoanode. J Colloid Interface Sci 2022; 626:345-354. [DOI: 10.1016/j.jcis.2022.06.084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 05/21/2022] [Accepted: 06/19/2022] [Indexed: 10/31/2022]
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17
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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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18
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Chai H, Wang S, Wang X, Ma J, Jin J. Modulation of the Chemical Microenvironment at the Hematite-Based Photoanode Interface with a Covalent Triazine Framework for Efficient Photoelectrochemical Water Oxidation. ACS Catal 2022. [DOI: 10.1021/acscatal.2c00285] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Huan Chai
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), The Key Laboratory of Catalytic Engineering of Gansu Province, Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
| | - Shuoshuo Wang
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), The Key Laboratory of Catalytic Engineering of Gansu Province, Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
| | - Xu Wang
- State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory for Catalytic Conversion of Carbon Resources, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| | - Jiantai Ma
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), The Key Laboratory of Catalytic Engineering of Gansu Province, Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
| | - Jun Jin
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), The Key Laboratory of Catalytic Engineering of Gansu Province, Key Laboratory of Advanced Catalysis of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
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19
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Choi MJ, Kim TL, Choi KS, Sohn W, Lee TH, Lee SA, Park H, Jeong SY, Yang JW, Lee S, Jang HW. Controlled Band Offsets in Ultrathin Hematite for Enhancing the Photoelectrochemical Water Splitting Performance of Heterostructured Photoanodes. ACS APPLIED MATERIALS & INTERFACES 2022; 14:7788-7795. [PMID: 35040620 DOI: 10.1021/acsami.1c18886] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Formation of type II heterojunctions is a promising strategy to enhance the photoelectrochemical performance of water-splitting photoanodes, which has been tremendously studied. However, there have been few studies focusing on the formation of type II heterojunctions depending on the thickness of the overlayer. Here, enhanced photoelectrochemical activities of a Fe2O3 film deposited-BiVO4/WO3 heterostructure with different thicknesses of the Fe2O3 layer have been investigated. The Fe2O3 (10 nm)/BiVO4/WO3 heterojunction photoanode shows a much higher photocurrent density compared to the Fe2O3 (100 nm)/BiVO4/WO3 photoanode. The Fe2O3 (10 nm)/BiVO4/WO3 trilayer heterojunction anodes have sequential type II junctions, while a thick Fe2O3 overlayer forms an inverse type II junction between Fe2O3 and BiVO4. Furthermore, the incident-photon-to-current efficiency measured under back-illumination is higher than those measured under front-illumination, demonstrating the importance of the illumination sequence for light absorption and charge transfer and transport. This study shows that the thickness of the oxide overlayer influences the energy band alignment and can be a strategy to improve solar water splitting performance. Based on our findings, we propose a photoanode design strategy for efficient photoelectrochemical water splitting.
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Affiliation(s)
- Min-Ju Choi
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Gwanak-ro 1, Seoul 08826, Republic of Korea
| | - Taemin L Kim
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Gwanak-ro 1, Seoul 08826, Republic of Korea
| | - Kyoung Soon Choi
- Advanced Nano Surface Research Group, Korea Basic Science Institute, Daejeon 34133, Republic of Korea
| | - Woonbae Sohn
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Gwanak-ro 1, Seoul 08826, Republic of Korea
| | - Tae Hyung Lee
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Gwanak-ro 1, Seoul 08826, Republic of Korea
| | - Sol A Lee
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Gwanak-ro 1, Seoul 08826, Republic of Korea
| | - Hoonkee Park
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Gwanak-ro 1, Seoul 08826, Republic of Korea
| | - Sang Yun Jeong
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Jin Wook Yang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Gwanak-ro 1, Seoul 08826, Republic of Korea
| | - Sanghan Lee
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Ho Won Jang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Gwanak-ro 1, Seoul 08826, Republic of Korea
- Advanced Institute of Convergence Technology, Seoul National University, Suwon 16229, Republic of Korea
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20
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Ahmed MI, Arachchige LJ, Su Z, Hibbert DB, Sun C, Zhao C. Nitrogenase-Inspired Atomically Dispersed Fe–S–C Linkages for Improved Electrochemical Reduction of Dinitrogen to Ammonia. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05174] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Muhammad I. Ahmed
- School of Chemistry, and Materials and Manufacturing Futures Institute, University of New South Wales, Sydney 2052, Australia
| | - Lakshitha J. Arachchige
- Department of Chemistry and Biotechnology, and Centre for Translational Atomaterials, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
- Guangdong Provincial Key Laboratory of Distributed Energy Systems, Dongguan University of Technology, Dongguan 523808, China
| | - Zhen Su
- School of Chemistry, and Materials and Manufacturing Futures Institute, University of New South Wales, Sydney 2052, Australia
| | - David B. Hibbert
- School of Chemistry, and Materials and Manufacturing Futures Institute, University of New South Wales, Sydney 2052, Australia
| | - Chenghua Sun
- Department of Chemistry and Biotechnology, and Centre for Translational Atomaterials, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Chuan Zhao
- School of Chemistry, and Materials and Manufacturing Futures Institute, University of New South Wales, Sydney 2052, Australia
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21
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Wu Q, Liang X, Chen H, Yang L, Xie T, Zou X. Surface-oxidized titanium diboride as cocatalyst on hematite photoanode for solar water splitting. CrystEngComm 2022. [DOI: 10.1039/d2ce00122e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The PEC performance of α-Fe2O3/SO-TiB2 is attributed to the enhancement of photogenerated charge separation and injection efficiency under the driving force of the interfacial electric field.
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Affiliation(s)
- Qiannan Wu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Xiao Liang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Hui Chen
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Lan Yang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Tengfeng Xie
- College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Xiaoxin Zou
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
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