JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2019
·Vol. 31
·期 1
·667-676
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IF 2.195
Zhang Qi,Liu Miao,Liu Shujie,Qiao Liang,Hu Xiaoying,Tian Hongwei
BiVO 4 is known for its ability to decompose water under visible light irradiation. However, BiVO 4 overall suffers from rapid recombination of photogenerated carriers, low photochemical conversion efficiency, low specific surface area, poor conductivity, and weak adsorption capacity of dye. These features limited its application in photocatalysis. In this work, ternary Z-scheme g-C 3 N 4 /RGO/BiVO 4 nanocomposites were successfully fabricated by in situ electrostatic adsorption of g-C 3 N 4 sheets on RGO/BiVO 4 surface using hydrothermal and thermal oxidations processes. The ternary Z-scheme g-C 3 N 4 /RGO/BiVO 4 nanocomposites were then tested for photodegradation of Rhodamine B. The introduction of graphene into direct Z-scheme g-C 3 N 4 /BiVO 4 nanocomposites as an electronic accelerator efficiently enhanced the photocatalytic properties. The as-prepared g-C 3 N 4 /RGO/BiVO 4 composites exhibited optimal visible light responses with significantly improved photocatalytic performances toward degradation of Rhodamine B. The degradation efficiency using ternary photocatalyst reached 100% after 20 min of irradiation time. The reaction rate constant was estimated to 1.537, which was almost 29- and 20-folds higher than those of pure g-C 3 N 4 and binary g-C 3 N 4 /BiVO 4 , respectively. The synergistic effect between BiVO 4 , RGO and g-C 3 N 4 yielded g-C 3 N 4 /RGO/BiVO 4 composites with Z-scheme charge transfer mechanism, promoting rapid separation and slow recombination of photogenerated electron–hole pairs with strong photocatalytic activity. Overall, these findings look promising for design of future Z-scheme photocatalysts for environmental degradation of organic dyes.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Jingwei Huang,Wei Luo,Xiaoli Yuan,Jing Wang
In this work, bimetallic NiCo-MOF was fabricated on BiVO 4 by method of electrostatic attraction and then calcined to prepare Ni x Co 1−x O/BiVO 4 composite photoanode. The obtained Ni x Co 1−x O with high porosity and surface area showed excellent oxygen evolution performance. It is found that Ni x Co 1−x O acting as a strong hole extraction increases the rate of surface water oxidation by promoting charge separation efficiency. As a result, this composite photoanode can provide a photocurrent of 3.2 mA/cm 2 at 1.23 V vs RHE (0.5 M Na 2 SO 4 , AM 1.5 G illumination), far larger than that of pure BiVO 4 photoanode. The enhanced performance can be ascribed to synergistic effect between Ni and Co, which plays an important role for boosting water oxidation.
研究领域:
材料科学
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能源转换
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DOI
高影响因子
RESEARCH ON CHEMICAL INTERMEDIATES
·
2017
·Vol. 44
·期 2
·1013-1024
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IF 1.369
Li Yan,Hu Yingfei,Fang Tao,Li Zhaosheng,Zou Zhigang
BiVO 4 has emerged as a promising material for solar water splitting. The poor ability of charge transport and separation always limits its performance for photoelectrochemical water splitting. Herein, we coupled n-type BiVO 4 with p-type LaFeO 3 and LaCoO 3 , achieving a photocurrent more than two times as high as bare BiVO 4 at 1.23 V versus a reversible hydrogen electrode. Also, the onset potential was negatively shifted about 260 mV. The promotion of performance is mainly because the space charge layer in BiVO 4 is broadened, and the band bend is enhanced, which facilitates the separation and transport of photo-generated charges.
研究领域:
材料科学
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能源科学
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DOI
高影响因子
APPLIED CLAY SCIENCE
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2016
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IF 2.586
Yingying Shi,Youdong Hu,Lei Zhang,Zewei Yang,Qianghua Zhang,Hao Cui,Xiufang Zhu,Jizhong Wang,Jing Chen,Kanglin Wang
A novel bismuth vanadate-palygorskite (BiVO 4 -Pal) photocatalyst was successfully prepared by a hydrothermal method . The morphology, structure and chemical composition of the composite was characterized. The adsorption capacity and photocatalytic activity under visible light of this composite to tetracycline hydrochloride were also investigated. The results indicated that BiVO 4 was successfully loaded on the Pal. Pal, as a low cost support, improved the adsorption capacity of the photocatalyst, thus increased the contact possibility with the active radicals, hence, the degradation activity of BiVO 4 was improved. The maximum adsorption capacity of BiVO 4 -Pal for tetracycline (TC), calculated by the Langmuir model at 20 °C, was 33.11 mg·g − 1 . The pseudo-first-order degradation rate constant for BiVO 4 -Pal composites was approximately 2.1 times higher than that of pure BiVO 4 , and the photodegradation ratio on the BiVO 4 -Pal composite was 1.4 times greater than that of pure BiVO 4 . In addition, the recovery of the BiVO 4 -Pal composite was carried out after the reaction by calcination at 400 °C for 4 h. The test showed that the prepared BiVO 4 -Pal catalyst was stable during the photodegradation of TC. There was no obvious reduction in the degradation rate of TC over the four successive runs and might be useful for practical applications.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
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2022
·Vol. 57
·期 6
·4092-4103
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IF 4.682
Chen Zongchen,Jiang Jiwei,Wang Xin,Zhang Hui,Song Bo,Dong Bin
Inspired by the swarming behavior of various bacteria in nature, light-driven micromotor with collective behavior has attracted a great deal of attention, which will be a valuable tool to understand the cooperation and communication between bacterial populations and will contribute to the creation of reconfigurable microrobots and the cooperative transportation of large cargoes. However, it is still challenging to modulate the micromotors’ collective behavior based on local interaction and communication. Herein, we develop a light-powered BiVO 4 -based micromotor with self-propulsion and dynamic ‘predator-bait’ collective behavior, which is based on the photocatalytic reaction of BiVO 4 . The BiVO 4 -based micromotor has great potential in the field of organic pollutant degradation with enhanced apparent rate constant (0.076 min −1 ) which originates from the dynamic ‘predator-bait’ behavior.
研究领域:
材料科学
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环境科学
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仿生学
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DOI
高影响因子
ENVIRONMENTAL RESEARCH
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2023
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IF 8.3
Xiaofan Yang,Yutao Xu,Saraschandra Naraginti,Xueyu Wei
The emerging contaminants removal from the environment has recently been raised concerns due to their presence in higher concentrations. Over usage of emerging contaminant such as sulfamethazine poses serious threat to the aquatic and human health as well. This study deals with rationally structured a novel BiOCl (110)/NrGO/BiVO 4 heterojunction which is used to detoxify sulfamethazine (SMZ) antibiotic efficiently. The synthesised composite was well characterized and the morphological analysis evidenced the formation of heterojunction consisted of nanoplates BiOCl with dominant exposed (110) facets and leaf like BiVO 4 on NrGO layers. Further results revealed that the addition of BiVO 4 and NrGO tremendously increased the photocatalytic degradation efficiency of BiOCl with the rate of 96.9% (k = 0.01783 min −1 ) towards SMZ within 60 min of visible light irradiation. Furthermore, heterojunction energy-band theory was employed to determine the degradation mechanism of SMX in this study. The larger surface area of BiOCl and NrGO layers are believed to be the reason for higher activity which facilitates the excellent charge transfer and improved light absorption . In addition, SMZ degradation products identification was carried out by LC-ESI/MS/MS to determine the pathway of degradation. The toxicity assessment was studied using E. coli as a model microorganism through colony forming unit assay (CFU), and the results indicated a significant reduction in biotoxicity was observed in 60 min of degradation process. Thus, our work gives new methods in developing various materials that effectively treat emerging contaminants from the aqueous environment.
研究领域:
环境科学
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材料科学
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毒理学
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DOI
PubMed
高影响因子
OPTICAL MATERIALS
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2021
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IF 3.08
Xue Li,Li-Juan Jian,Li Wang,Rong-Han Liu,Yun Zhao,Jiang-Tao Chen,Yan Li
Strategy of designing new-structured semiconductor photocatalysts with great electron-hole pairs separation is meaningful for improving the photocatalytic pollution abatement. Herein, on the basis of decahedral BiVO 4 with largely exposed (040) crystal facet, p-n hetero-nanostructured NiS@(040)-BiVO 4 catalysts with various molar ratio of NiS were fabricated by a facile two-step hydrothermal method to study the photo-degradation activities under visible-light irradiation. To photo-degrade anion methyl orange (MO), cation rhodamine B (RhB) and tetracyclines (TC), such nanostructures can all exhibit excellent photocatalytic activities . Compared with pure (040)-BiVO 4 and NiS nanoparticles , 0.6 M ratio of NiS@(040)-BiVO 4 possesses 8.6, 8.9 and 6.5 times higher photocatalytic capacity (MO: 98.6%, RhB: 99.1%, TC: 98.4%) and 49.2, 64.2 and 27.7 times faster photocatalytic rate (MO: 8.4060 h −1 , RhB: 8.2854 h −1 , TC: 7.6230 h −1 ). Detailed analyses show the superior light-harvesting, higher photocurrent response, excellent charge separation and improved charge transport properties are the main factors resulting the high efficient photocatalytic performance of NiS@(040)-BiVO 4 nanostructures. Besides, the forming of facet isotype heterojunctions between (040) and (220) lattice planes in BiVO 4 can also help to get more active photo-induced electrons for photocatalysis .
研究领域:
材料科学
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环境科学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Xinxin Wei,Jing Zhang,Lei Wang,Yan Bai,Jingwei Huang,Houde She,Qizhao Wang
To address the issue of inefficient charge transfer efficiency at the semiconductor/cocatalyst interface, we engineered a BiVO 4 /MgO/FeCo 2 O 4 array, incorporating a MgO interlayer. This design aimed to enhance the performance of photoelectrochemical (PEC) water splitting on BiVO 4 and FeCo 2 O 4 . The introduced interlayer efficiently hinders hole backflow, promoting unimpeded charge migration within the multi-hybrid structure. This, in turn, significantly reduces the recombination of electron-hole pairs. In addition, the BiVO 4 /MgO/FeCo 2 O 4 undergoes a low-temperature plasma treatment, resulting in super-hydrophilicity. This treatment enhances charge migration efficiency and fosters extensive contact between the electrolyte and electrode interfaces. Photoelectrochemical analysis demonstrates that H-BiVO 4 /MgO/FeCo 2 O 4 exhibits exceptional performance for the oxygen evolution reaction (OER), showcasing a photocurrent density of 4.3 mA·cm −2 at 1.23 V vs. RHE in 0.5 M Na 2 SO 4 under AM 1.5 G (100 mW·cm −2 ) illumination. Remarkably, this value is 5.2 times higher than that observed for BiVO 4 . Furthermore, the maximum incident photon to current conversion efficiency (IPCE) reaches an impressive 61.7 %, surpassing that of BiVO 4 and BiVO 4 /FeCo 2 O 4 by approximately 5.1 and 1.7 times, respectively. Additionally, the charge separation efficiency of H-BiVO 4 /MgO/FeCo 2 O 4 achieves a notable 83.4 %, and the charge injection efficiency is substantially improved. This study advocates for a straightforward yet highly effective approach to mitigate interfacial electron-hole recombination.
研究领域:
材料科学
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能源科学
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光催化
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DOI
高影响因子
CHEMICAL PHYSICS LETTERS
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2024
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IF 2.8
Dongping Huang,Shuifa Shen
Monoclinic BiVO 4 material was successfully synthesized through a hydrothermal method, and silver (Ag) nanoparticles were deposited onto the surface of BiVO 4 using the photo deposition technique. The gas-sensing outcomes demonstrate that the BiVO 4 material loaded with 2 wt% Ag has a good gas-sensing response to isopropanol, which is about three times that of pure BiVO 4 . In addition, it exhibits a fast response within 10 s and well-stability. The improved gas sensing properties primarily come from the catalytic and spillover effect mechanism of Ag.
研究领域:
材料科学
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传感器技术
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DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-9
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IF 15.7
Wang Shuo,Li Chenyang,Qi Yu,Zhang Jiaming,Wang Ningning,Liu Meng,Zhang Boyang,Cai Xuefen,Zhang Hongbo,Wei Su-huai,Ma Guijun,Yang Jingxiu,Chen Shanshan,Zhang Fuxiang
Charge separation of particulate photocatalysts has been considered as the rate-determining step in artificial photocatalysis since the finding of Honda-Fujishima effect, whose efficiency is generally much lower than that of natural photosynthesis. To approach its upper limit, it requires the photoexcited electrons and holes be efficiently transferred to the spatially separated redox reaction sites over a single photocatalyst particle. Herein, it is demonstrated the spatial charge separation among facets of BiVO 4 :Mo can be notably promoted by creating an electron transfer layer. It not only favors electrons to transfer to its surface, but also promotes the built-in electric field intensity of the inter-facet junction by over 10 times. Consequently, the charge separation efficiency of the modified BiVO 4 :Mo with loading of CoFeO x oxidation cocatalyst exceeds 90% at 420 nm, comparable to that of the natural photosynthesis system, over which notably enhanced photocatalytic activities are achieved. Our findings demonstrate the effectiveness of electron transfer layer in intensifying charge separation of particulate photocatalysts.
研究领域:
材料科学
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光催化技术
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能源转换
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产品关联
DOI
PubMed
高影响因子
DALTON TRANSACTIONS
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2025
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IF 3.3
Leiting Si,Jiawei Yang,Guang Liu
BiVO4 is considered as one of the important candidate materials for photoelectrochemical water splitting technology. However, the low efficiency of charge separation and poor kinetics of water oxidation limit its performance in the PEC water splitting. In this work, BiVO4/MIL-53(FeNiCo) photoanode was constructed by a facile hydrothermal deposition method, exhibiting excellent water oxidation ability under AM 1.5 G light irradiation, and achieving a photocurrent density of 3.53 mA cm-2 at 1.23 VRHE, which is about 3.2 times that of pure BiVO4. The electrochemical test results demonstrate that the decoration of MIL-53(FeNiCo) could enhance the charge transfer and accelerate the kinetics of water oxidation reaction, thus leading to the excellent PEC water splitting performance. The PEC stability is also significantly improved, indicating that MIL-53(FeNiCo) allows BiVO4 to be used for water oxidation for stable PEC water oxidation.
研究领域:
材料科学
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能源技术
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产品关联
DOI
PubMed
高影响因子
Catalysts
·
2021
·Vol. 11
·期 9
·1083
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IF 4.146
Hsiang-Ning Luk,Tsong-Yung Chou,Bai-Hao Huang,Yu-Syuan Lin,Hui Li,Ren-Jang Wu
In this study, the Pd/BiVO4composite was prepared by hydrothermal method as an electrochemical sensing material for epinephrine. X-ray diffraction, scanning electron microscopy, and a transmission electron microscope were used to characterize the samples. In the electrochemical detection system, cyclic voltammetry and differential pulse voltammetry were applied to measure the concentration of the epinephrine solution (0.9–27.5 µM) with the Pd/BiVO4-coated glassy carbon electrode. As a result, the oxidation peak current of Pd/BiVO4/GCE demonstrated good linearity with the epinephrine concentration. The detection limit of the epinephrine concentration by cyclic voltammetry and differential pulse voltammetry were 0.262 µM and 0.154 µM, respectively. Additionally, the proposed sensing material exhibited good reproducibility, stability, and selectivity. A plausible sensing mechanism was proposed.Keywords:epinephrine;cyclic voltammetry;differential pulse voltammetry;Pd/BiVO4
研究领域:
生物医学
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材料科学
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电化学
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DOI
高影响因子
危险品化学品经营许可证（带存储）