JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Xing Cao,Huanhui Chen,Ziqian Lu,Yubin Zhao,Shoujing Wei,Ya Liu,Junrong Zeng,Gaowei Zhang,Qing Ma,Liubiao Zhong,Lijuan Song,Yejun Qiu
The industrial development of BiVO 4 photoanode–based photoelectrochemical (PEC) water splitting is constrained by the poor stability of the BiVO 4 photoanode. However, the effect of phosphorus (P) in commonly used electrolytes on BiVO 4 photoanode stability and the associated mechanism are still scarce. Herein, we investigate the effects of different P-containing electrolytes on the PEC performance of BiVO 4 , as well as the changes in the composition, microstructure, light-absorption properties, and carrier transport and separation efficiencies of BiVO 4 between before and after the reaction. Results demonstrate that at 1.23 V versus reversible hydrogen electrode (V RHE ), the photocurrent decay of BiVO 4 in all P-containing electrolytes after 24 h is >95 %. In acidic environments, H + and PO 4 3− convert BiVO 4 into BiPO 4 , with a larger band gap, resulting in decrease in PEC activity and stability. Under alkaline conditions, P deposits as a phosphorus oxide onto the BiVO 4 surface, resulting in severe carrier recombination and slower water oxidation kinetics. The 24-h photocurrent attenuation is alleviated to 33.5 % via a strategy involving low applied potential (0.8 V RHE ), introduction of labile V ions (NaVO 3 ), and deposition of a cocatalyst layer (NiOOH/FeOOH). This study emphasizes the effect of electrolyte composition on the PEC stability of BiVO 4 and provides a reference for the modification of BiVO 4 .
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
PubMed
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-12
·
IF 14.7
Liu Yang,Shang Huishan,Zhang Bing,Yan Dongpeng,Xiang Xu
The C–C bond cleavage of biomass-derived glycerol to generate value-added C1 products remains challenging owing to its slow kinetics. We propose a surface fluorination strategy to construct dynamic dual hydrogen bonds on a semiconducting BiVO 4 photoelectrode to overcome the kinetic limit of the oxidation of glycerol to produce formic acid (FA) in acidic media. Intensive spectroscopic characterizations confirm that double hydrogen bonds are formed by the interaction of the F–Bi–F sites of modified BiVO 4 with water molecules, and the unique structure promotes the generation of hydroxyl radicals under light irradiation, which accelerates the kinetics of C–C bond cleavage. Theoretical investigations and infrared adsorption spectroscopy reveal that the double hydrogen bond enhances the C=O adsorption of the key intermediate product 1,3-dihydroxyacetone on the Bi–O sites to initiate the FA pathway. We fabricated a self-powered tandem device with an FA selectivity of 79% at the anode and a solar-to-H 2 conversion efficiency of 5.8% at the cathode, and these results are superior to most reported results in acidic electrolytes.
研究领域:
材料科学
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光电化学
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催化反应
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 22
·10456-10465
·
IF 9.931
Xiaohui Zhong,Huichao He,Minji Yang,Gaili Ke,Zongyan Zhao,Faqin Dong,Bowen Wang,Yaqi Chen,Xianying Shi,Yong Zhou
BiVO4 is a promising photoanode material for photoelectrochemical water splitting, but its actual activity is hindered by the high energy surface states. Here, we report that In3+ can be used as a dopant to substitute the partial sites of Bi3+ in BiVO4 for modifying the surface states and improving the water oxidation activity of a BiVO4 nanoflake film. Among the In3+-doped BiVO4 film photoanodes, the 7% In3+-doped BiVO4 film shows optimal photoelectrochemical water oxidation activity. At 1.23 V vs. RHE, the 7% In3+-doped BiVO4 photoanode exhibits a photocurrent density of 1.56 mA cm−2 in 0.1 M Na2SO4, which is over 200% greater than that of the undoped BiVO4 photoanode. In3+-doping did not change the morphology, phase and band gap of BiVO4 obviously, but resulted in a positive shift of the flat band position and higher surface charge separation efficiency for water oxidation. Density functional theory calculations indicate that the surface energy of BiVO4 decreased after In3+-doping that involved more unsaturated electrons of the Bi atom in the Bi–O bonds, thus reducing the amount of exposed unsaturated Bi atoms and broken Bi–O bonds. Therefore, the enhanced water oxidation activity on the In3+-doped BiVO4 photoanode can be ascribed to In3+-doping that passivated the surface states of BiVO4 and thus inhibited the surface charge recombination.
研究领域:
材料科学
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能源科学
✓ 已验证
DOI
高影响因子
Energy Advances
·
2023
·Vol. 2
·期 9
·1366-1374
·
IF 0
Zhengzhe Xie,Xiaoyuan Liu,Pengpeng Jia,Yu Zou,Jiang Jiang
Replacing water oxidation by the thermodynamically more favorable glycerol oxidation reaction in a photoelectrochemical (PEC) cell is highly desirable, which can not only improve the energy efficiency of hydrogen evolution, but also produce value-added chemicals, given that glycerol is easily accessible as a major byproduct from the biodiesel industry. Herein, a BiVO4/CoV-LDHs/Ag photoanode has been fabricated via a simple electrodeposition and redox strategy, which exhibits excellent PEC activity toward glycerol oxidation. A high photocurrent density of 7.15 mA cm−2 can be achieved at 1.23 V vs. reversible hydrogen electrode, in 0.5 M Na2SO4 solution with 0.1 M glycerol under AM 1.5G illumination, which is 2.7 times that of the pristine BiVO4 photoanode. The significantly enhanced PEC performance can be attributed to the narrowed optical band gap, and improved charge separation and injection efficiencies after surface deposition of CoV-LDHs/Ag on the BiVO4 photoanode. As a result, greatly improved hydrogen production efficiency has been achieved by coupling the photo-electrochemical glycerol oxidation on the BiVO4/CoV-LDHs/Ag photoanode, with the evolved hydrogen gas (123.5 mmol m−2 h−1) nearly double that when using the pristine BiVO4 photoanode.
研究领域:
材料科学
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电化学
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可再生能源
✓ 已验证
DOI
ADVANCED FUNCTIONAL MATERIALS
·
2024
·Vol. 34
·期 26
·2314973
·
IF 18.5
Qian Zhang,Yifan Wang,Wenran Zhang,Xiangdong Yao,Qijie Liang
Photoelectrochemical solar to hydrogen conversion is a promising approach to solve energy and environmental problems. One of the paramount challenges to overcome is to achieve high solar to hydrogen efficiency while retaining stable service behavior without photocorrosion of the photoanode. In this study, a hydrogel-enabled dual-shielding (FeCoO x /PAAM) strategy is reported to improve efficiency and suppress photocorrosion of photoanode during solar water splitting especially in a high-intensity illumination. Anodic photocorrosion of BiVO 4 photoanodes involves the chemical and physical construction changes under the conditions of light field, electric field, and electrolyte. The utilization of FeCoO x /PAAM on BiVO 4 inhibits the improvement of oxygen evolution reaction kinetics, bubble dynamics, and blocking ion dissolution diffusion, which effectively suppresses anodic photocorrosion and simultaneously improves efficiency of BiVO 4 photoanode. The improved BiVO 4 /FeCoO x /PAAM photoanode shows a superior photocurrent density of 19.88 mA cm −2 at 1.23 V versus RHE, and a high charge separation efficiency of 98% with enhanced stability over 60 h (300 mW cm −2 ). This study contributes to developing a universal method of photoanode protection to anti-photocorrosion, facilitating the development of high-efficiency, high-stability, and pollution-free hydrogen production.
研究领域:
材料科学
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能源科学
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环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
·
IF 9.965
Yuntao Xu,Yanfei Cao,Li Tan,Qiao Chen,Yuanxing Fang
Photoanodic hydrogen peroxide (H 2 O 2 ) production via water oxidation is limited by low yields and poor selectivity. Herein, four variations of cobalt phosphides, including pristine CoP and Co 2 P crystals, and two mixed-phase cobalt phosphides (CoP/Co 2 P) with different ratios, were applied as co-catalysts on the BiVO 4 (BVO) photoanode to improve H 2 O 2 production. The optimal yield and selectivity were approximately 9.6 µmol‧h −1 ‧cm −2 and 25.2 % at a voltage bias of 1.7 V vs reversible hydrogen electrode (V RHE ) under sunlight illumination, respectively. This performance is approximately 1.8 times that of pristine BVO photoanode. The roles of the Co and P sites were investigated. In particular, the Co site promotes the breaking of one H O bond in water to form OH • radicals, which is the rate-determining step in H 2 O 2 production. The P site plays an important role in the desorption of H 2 O 2 formed from the catalyst, which is responsible for the recovery of fresh catalytic sites. Among the four samples, Co 2 P exhibited the best performance for H 2 O 2 production because it had the highest rate of OH • formation owing to its improved accumulation property. This study offers a rational design strategy for co-catalysts for photoanodic H 2 O 2 production.
研究领域:
材料科学
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环境科学
·
化学
✓ 已验证
DOI
PubMed
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2025
·
IF 17.7
Zhixing Guan,Ying Zhang,Fangfang Feng,Zhaohui Li,Yanli Liu,Zifeng Wu,Xingxing Zheng,Xionghui Fu,Yuanming Zhang,Wenbin Liao,Jialu Chen,Hongguang Liu,Yi Zhu,Yongge Wei
The slow-proton-fast-electron process severely limits the catalytic efficiency of oxygen evolution reaction. A method is proposed to accelerate proton transfer by building up local electric fields. Modifying acetic, ethanedioic and propanetricarboxylic (C 6 H 8 O 6 ) ligands on BiVO 4 surface results in a potential difference between BiVO 4 and ligands that generates a local electric field which serves as a driving force for proton transfer. Among the ligands, carrying the strongest electron-withdrawing ability, the modification of C 6 H 8 O 6 forms the strongest local electric field and leads to the fastest proton transfer and the smallest thermodynamic overpotential. C 6 H 8 O 6 -BiVO 4 exhibits 3.5 times photocurrent density as high as that of pure BiVO 4 , which is 3.50 mA cm –2 at 1.23 V RHE . The onset potential of C 6 H 8 O 6 -BiVO 4 shifts negatively from 0.70 to 0.38 V RHE . The mechanism for OER transitions from thermodynamically high energy proton-coupled electron transfer to thermodynamically low energy electron transfer as proton transfer is accelerated.
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Yang Zhang,Xintong Zhang,Dan Wang,Fangxu Wan,Yichun Liu
Introducing appropriate amount of oxygen vacancies by hydrogenation treatment is a simple and efficient way to improve the photoelectrochemical performance of nanostructured oxide photoanodes. However, the hydrogenation effect is often not durable due to the gradual healing of oxygen vacancies at or close to surface of photoanodes. Herein, we tackled the problem by conformal coating the hydrogenated nanoporous BiVO 4 (H-BiVO 4 ) photoanode with an ultrathin layer of amorphous TiO 2 . Photoelectrochemical measurements showed that a 4 nm-thick TiO 2 layer could significantly improve the stability of H-BiVO 4 photoanode for repeated working test, with negligible influence on the initial photocurrent compared to the uncoated one. Mott–Schottky and linear sweep voltammetry measurements showed that donor density and photocurrent density of the H-BiVO 4 electrode almost decayed to the values of pristine BiVO 4 electrode after 3 h test, while the amorphous TiO 2 -coated electrode only degraded by 6% and 5% of the initial values respectively in the same period. The investigation thus suggested that the amorphous TiO 2 layer did protect the oxygen vacancies in H-BiVO 4 photoanode by isolating these oxygen vacancies from environmental oxygen, while at the same time not impeding the interfacial charge transfer to water molecules due to its leaky nature.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Gaili Ke,Binyao Liu,Feng Duan,Xiaotian Liu,Jinyu Wen,Bi Jia,Xiaoyan Liu,Huichao He,Yong Zhou
The poor properties of carrier separation and transfer on BiVO 4 surface are two major bottlenecks for nanostructured BiVO 4 photoanodes during solar water oxidation. Herein, BiVO 4 /resorcinol–formaldehyde resin (BiVO 4 /RFS) heterojunction films were prepared by coupling resorcinol–formaldehyde resin (RFS) nanoparticles on BiVO 4 films’ surface, and investigated as photoanodes for solar water oxidation. The light harvesting and electrochemical properties of the resultant BiVO 4 /RFS film was close to the BiVO 4 film, but its carrier radiative recombination was weakened significantly. Relative to the BiVO 4 film photoanode, better water oxidation activity, kinetics and stability were observed on the BiVO 4 /RFS film photoanode. The conduction and valence band potential of RFS nanoparticles were discovered to be lower than those of BiVO 4 , and the surface photogenerated holes and electrons could be directionally transferred to RFS nanoparticles and BiVO 4 film, respectively. The higher solar water oxidation performance on the BiVO 4 /RFS photoanode was mainly originated from the separation and transfer of surface carrier through the BiVO 4 /RFS coupling interfaces under AM 1.5G irradiation. The present work could provide inspiration in the design and development of similar heterojunction materials for solar water splitting.
研究领域:
材料科学
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能源科学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2016
·
IF 4.803
Yang Zhang,Dan Wang,Xintong Zhang,Ying Chen,Lina Kong,Peng Chen,Yinglin Wang,Changhua Wang,Lingling Wang,Yichun Liu
Improving charge transportation and interfacial charge transfer in semiconductor photoelectrodes are two critical issues for achieving high-efficiency photoelectrochemical (PEC) water splitting. Herein, a combined hydrogenation treatment and cobalt-phosphate (Co-Pi) deposition is reported to dramatically enhance the PEC performance of nanoporous BiVO 4 photoanode. Linear sweep voltammograms show that after the combined treatment, photocurrent density of nanoporous BiVO 4 photoanode is increased for ca. 3 times at 1.23 V versus reversible hydrogen electrode (RHE), and the onset potential is negatively shifted from 0.53 V to 0.23 V versus RHE. Combined photoluminescence, Mott-Schottky, open circuit potential, as well as electrochemical impedance spectroscopy analyses reveal the synergistic effect of hydrogenation treatment and Co-Pi deposition on enhancing the PEC performance of nanoporous BiVO 4 photoanode, facilitating both charge transportation and interfacial charge transfer without aggravating charge recombination.
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Ling Cheng,Tao Jiang,Kai Yan,Jianyu Gong,Jingdong Zhang
When photoelectrocatalysis (PEC) couples with electroenzymatic catalysis (EEC), effective utilization of electrons from PEC process for yield of H 2 O 2 plays an important role in the enzymatic catalysis. In the present work, we designed a novel dual-cathode PEC-EEC system for pollutant removal. In this system, BiVO 4 photoanode was prepared by electrodeposition for visible light-driven PEC process while carbon cloth was used as the first cathode for electrogeneration of H 2 O 2 and hemin/Cu prepared by electrophoretic deposition acted as the second cathode for enzymatic catalysis. The performances of the constructed dual-cathode PEC-EEC system were evaluated by decoloring Rhodamine B (RhB), which showed high decoloration percentage with acceptable stability and reusability. Further, the system was applied to degradation of tetracycline (TC), indicating that about 93.6% of TC was removed after 2-h treatment. A pathway for TC degradation in such a dual-cathode PEC-EEC system was proposed based on the intermediates determined by liquid chromatography coupled to mass spectrometry in tandem (LC-ESI-MS/MS).
研究领域:
环境科学
·
光催化
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 35
·1-11
·
IF 2.8
Sui Meirong,Gu Xiuquan
In this work, a facile metal organic decomposition route was developed for synthesizing the ZnO quantum dots (QDs), which were then in situ deposited onto a BiVO 4 nanoporous films for enhancing its photoelectrochemical (PEC) water oxidization activity. The results shows that there aren’t significant changes in both the color and surface morphology of the BiVO 4 membrane after QD modification. Nevertheless, the ZnO/BiVO 4 photoanode demonstrates a maximum photocurrent density of 2.56 mA/cm 2 at a bias of 1.23 V RHE with simulated solar irradiation, which is almost 2 times higher than that of the unmodified BiVO 4 one. The enhanced PEC performance is attributed to the formation of type II heterojunction, which promotes charge transfer/separation. This work might shield light on enhancing the PEC performance of BiVO 4 towards water oxidization.
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）