COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
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2024
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IF 8.1
Siyi Li,Bin Liu,Huayang Tian,Yujie Ning,Shuo Wu,Yihan Song,Qi Wang
The practical application of photocathodic protection (PCP) technology has been hindered by its failure in darkness. In this work, The BiVO 4 /MoO 3 composites were synthesized through a simple hydrothermal method, which were used as functional fillers, and then added to polyurethane resins to prepare energy-storing PCP coatings. This achievement enabled efficient PCP even in darkness. The 304 stainless steel coated with PCP coating (PB 10 M 1 ) exhibited excellent photoelectrochemical properties as photocurrent density of 394 μA/cm 2 , and the corrosion potential decreased by about 350 mV. Furthermore, the cathodic protection effect of PB 10 M 1 could last for 15 h in the dark, showing exceptional stability, superior energy-storage ability and potential application. The superior PCP performance of BiVO 4 /MoO 3 should be attributed to the cooperative effect in heterojunction structure and electronic regulation revealed by electrochemical characterizations and DFT calculation.
研究领域:
材料科学
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电化学
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涂层技术
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产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
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2024
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IF 8.1
Lei Shi,Wenyue Zhao,Zhao Wang,Wenjing Hua,Xiaoxia Yang,Xinyu Cao,Weidong Fei,Yu Zhao
The novel photovoltaic effect mechanism has been consistently corroborated over the last decade, however, the low photocurrent density remains a significant impediment to its practical applications. In this study, an extra-large photocurrent density is achieved in the acceptor (A 2+ , A = Ca, Sr, Ba)-donor (W 6+ ) co-doped BiVO 4 (BVO) films prepared with a sol-gel method. A photocurrent density of 4.05 mA/cm 2 under 450 nm light illumination and a large detection rate of 8.4 × 10 11 Jones and 5.4 × 10 11 Jones for 365 nm and 450 nm are respectively obtained. The high photoelectric conversion efficiency (PCE) of 2.4 % is obtained in the Au/BVO/Pt sandwich structure under 365 nm (10 mW/cm 2 ) light illumination using Sr 2+ -W 6+ co-doped film, even if the light is obstructed by Au top electrode. A possible mechanism based on uneven composition formed by acceptor-donor ions is proposed to explain the enhancement of the photovoltaic effect in A 2+ -W 6+ co-doped BVO films. The composite ion doping engineering presents a novel strategy for improving the photoelectric conversion efficiency in single-layer films.
研究领域:
材料科学
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光伏技术
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产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2019
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IF 14.229
Fang Li,Wei Zhao,Dennis Y.C. Leung
Photoelectrocatalytic hydrogen production is a clean and sustainable way to combat energy crises and environmental issues. The performance of BiVO 4 which acts as a promising photoanode could be effectively enhanced by loading with Bi nanoparticles. In this study, a viable method to fabricate Bi/BiVO 4 electrode was proposed to enhance hydrogen production through a photoelectrocatalytic reaction. The results indicated that Bi nanoparticles loaded under optimal condition could obviously increase the photocurrent density of the BiVO 4 electrode from 0.9 mA cm −2 to 2.0 mA cm −2 under visible light illumination. Furthermore, the photoelectrochemical hydrogen production efficiency could have a 2.5-fold improvement with the addition of 20 ppm phenol. The possible mechanism of the enhanced performance and the function of phenol in the overall reaction was discussed.
研究领域:
材料科学
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能源化学
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产品关联
DOI
高影响因子
Journal of Physical Chemistry Letters
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2024
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IF 4.8
Zhe Liu,Jiaqi Li,Shaojie Liu,Yao Yuan,Ainong Chen,Haolin Yu,Shouxiong Wang,Jie Ding,Huajing Fang
The organic–inorganic hybrid heterojunction is introduced for the first time to break through the performance bottleneck of BiVO4-based photodetectors. Through a facile solution process, a p-n heterojunction is established at the BiVO4/PEDOT:PSS interface, and the built-in electric field is designed to separate photogenerated charge carriers. The hybrid heterojunction outputs a significantly increased photocurrent, which is 24 000 times larger than that of the bare BiVO4 thin film. The photodetector shows a satisfactory performance with a responsivity (R) and specific detectivity (D*) of 107.8 mA/W and 4.13 × 1010 Jones at 482 nm illumination. In addition to the fast response speed (100 ms), the device also exhibits an impressive long-term stability with a negligible attenuation in photocurrent after more than 700 cycles. This work provides a novel strategy to suppress carrier recombination of BiVO4, and the coupling of metal oxides and organic semiconductors opens up a new avenue for fabricating high-performance photodetectors.
研究领域:
光电子学
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材料科学
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半导体物理
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纳米技术
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DOI
高影响因子
CATALYSIS LETTERS
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2020
·Vol. 151
·期 5
·1231-1238
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IF 2.482
Ge Jianhua,Ding Xiulong,Jiang Daochuan,Zhang Lei,Du Pingwu
Abstract Photoelectrochemical (PEC) water splitting using BiVO 4 semiconductor photoanodes have been appealed to plenty of attentions in the past few decades. In this study, FeP was used as an active precious-metal-free cocatalyst for the first time to enhance the performance of worm-like nanoporous BiVO 4 photoanodes for PEC water splitting. Characterization results demonstrate that FeP nanoparticles were successfully deposited on surface of the pritine BiVO 4 photoanodes, and served as an noble metal-free cocatalyst for solar-driven PEC water splitting. Furthermore, a maximum photocurrent density of ~ 3.05 mA/cm 2 at 1.23 V vs RHE could be achieved by loading moderate amount of FeP on the surface of BiVO 4 , which is about 1.6 times higher than that of the unmodified BiVO 4 . Meanwhile, the efficient suppression of surface recombination by FeP was also confirmed by the PEC measurements in Na 2 SO 3 solution. The maximum ABPE of FeP/BiVO 4 photoanodes was ~ 0.53% at 0.60 V vs RHE, indicating the potential application for overall solar-driven water splitting. Graphic Abstract
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
CHINESE JOURNAL OF CATALYSIS
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2018
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IF 3.525
Zhen Qin,Wenjian Fang,Junying Liu,Zhidong Wei,Zhi Jiang,Wenfeng Shangguan
A two-step photocatalytic water splitting system, termed a “Z-scheme system”, was achieved using Zn-doped g-C 3 N 4 for H 2 evolution and BiVO 4 for O 2 evolution with Fe 2+ /Fe 3+ as a shuttle redox mediator. H 2 and O 2 were evaluated simultaneously when the doping amount of zinc was 10%. Moreover, Zn-doped (10%) g-C 3 N 4 synthesized by an impregnation method showed superior active ability to form the Z-scheme with BiVO 4 than by in-situ synthesis. X-ray diffraction, UV-Vis spectroscopy, scanning electron microscopy, and X-ray photoelectron spectroscopy were used to characterize the samples. It was determined that more Zn–N bonds could be formed on the surface of g-C 3 N 4 by impregnation, which could facilitate charge transfer.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
TALANTA
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2024
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IF 5.6
Zhuangzhuang Ma,Zelin Ma,Zihuan Tang,Peijin Zou,Changlin Xiao,Jiale Zhang,Hongqiang Wang,Lichao Jia
Constructing heterostructures is an effective way to improve the carrier mobility for metal oxide sensing material, since heterojunctions are usually built only on the surface of the material, the carrier transport efficiency inside the material still needs to be improved. In this paper, BiVO 4 nanocrystals (BVO NCs) with an average size of 1 nm generated by pulsed laser irradiation were embedded in situ at the particle boundaries (PBs) of SnO 2 nanofibers to form an effective n-n heterojunctions inside the material. After embedding the BVO NCs in the SnO 2 samples, the response value for 10 ppm NO was improved to 48.91, which was 2.5 times higher than that of pure SnO 2 at near room temperature (50 °C). Meanwhile, the detection limit was lowered to 50 ppb with excellent long term stability. Detailed analysis and theoretical calculations demonstrated that the formation of abundant n-n heterojunctions not only promotes the electron-hole separation and the carrier mobility, but also reduces the conductivity and adsorption energy of the material, which significantly improves its sensing performance. This work demonstrates a new approach to modulate the gas-sensing performance of metal oxide semiconductors by generating heterostructure inside the bulk of the material.
研究领域:
材料科学
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传感器技术
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产品关联
DOI
PubMed
高影响因子
RSC Advances
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2013
·Vol. 3
·期 43
·20606-20612
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IF 2.562
Yongliang Cheng,Jiangtao Chen,Xingbin Yan,Zongmin Zheng,Qunji Xue
In this study, porous BiVO4 fibers were fabricated by a simple electrospinning technique followed by a controllable annealing of electrospun precursor fibers at different temperatures. The crystal structure, morphology, pore structure and photocatalytic properties of as-made porous BiVO4 fibers were systematically investigated. The results show that the final products have fibrous morphology and the phase structure of porous fibers belongs to monoclinic scheelite structure. The crystallinity and crystalline size increases, but the specific surface area decrease with increasing calcination temperature. These porous fibers all exhibit good optical absorption in visible light. As the sample calcined at 500 °C has larger specific surface area and better crystallinity, it exhibits the best photodegrading properties for rhodamine B solution.
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 Materials Chemistry A
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2015
·Vol. 3
·期 43
·21630-21636
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IF 7.443
Xiaofan Zhang,Bingyan Zhang,Kun Cao,Jérémie Brillet,Jianyou Chen,Mingkui Wang,Yan Shen
Converting solar energy into hydrogen via photoelectrochemical water splitting has attracted significant attention during the past decades. Herein, we design a novel core/shell TiO2@BiVO4 photoanode in combination with a CH3NH3PbI3-based perovskite solar cell for unassisted solar water splitting. Compared to pristine TiO2 NRs, the resulting TiO2@BiVO4 film exhibits a 3.25-fold enhanced photocurrent density (∼1.3 mA cm−2) under irradiation (xenon lamp coupled with an AM 1.5 G filter, 100 mW cm−2). This significant enhancement is attributed to the excellent light absorption properties of BiVO4 and a fast electron transfer process in the single crystalline TiO2 NRs. Especially, the type-II band alignment between the BiVO4 and rutile TiO2 NRs provides a large driving force for electron injection from the BiVO4 to the TiO2. The perovskite solar cell-TiO2@BiVO4 photoelectrochemical tandem device exhibits an overall solar-to-hydrogen efficiency of 1.24%, comparable to other TiO2-based PV/PEC systems.
研究领域:
材料科学
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能源转换技术
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光催化
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DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2020
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IF 3.085
Li Chen,Lili Miao,Yu Chen,Yiming Gao,Junwei Di
A cathodic photoelectrochemical glucose biosensor based on the Au nanoparticles (AuNPs) and BiVO 4 modified indium tin oxide (ITO) photoelectrode was developed successfully. The prepared ITO/AuNPs/BiVO 4 photoelectrode showed a large and stable cathodic photocurrent in the presence of oxygen as electron acceptor . Moreover, it could act as mimic glucose oxidase under visible light irradiation and catalytically oxidized glucose to produce gluconic acid and H 2 O 2 in the presence of O 2 . Meanwhile, the cathodic photocurrent decreased markedly because of simultaneous combination of the glucose oxidation and consumption of oxygen. Under the optimized condition, a linear relationship between photocurrent decrease and glucose concentration was obtained over the range of 1 n M to 1 mM with a detection limit of 2.6 × 10 −10 M (S/N = 3). This PEC biosensor shows a good selectivity, stability, repeatability and high sensitivity. This work provides a promising method for constructing a new type of cathode photochemical biosensor based on nanomaterials .
研究领域:
生物传感技术
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纳米材料科学
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分析化学
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产品关联
DOI
高影响因子
Journal of Physical Chemistry C
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2013
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IF 4.814
Zhiqiao He,Yuanqiao Shi,Chao Gao,Lina Wen,Jianmeng Chen,Shuang Song
A novel visible-light-active BiOCl/BiVO4 photocatalyst with a p–n heterojunction structure was prepared using a hydrothermal method. The photocatalytic activity of the heterojunction was investigated by monitoring the change in methyl orange (MO) concentration under visible-light irradiation. The results reveal that the composite exhibited markedly improved efficiency for MO photodegradation in comparison with pure BiVO4, BiOCl, and Degussa P25. This is ascribed to the B-type heterojunction structure with a strong oxidative ability and efficient charge separation and transfer across the BiOCl/BiVO4 p–n junction. The highest activity was obtained in the BiOCl/BiVO4 heterojunction using a composite of 13 mol % BiOCl and 87 mol % BiVO4. The removal of MO was mainly initiated by valence-band holes, but dissolved oxygen also played a crucial role in consuming the conduction-band electrons. This was verified by the effects of scavengers and N2 purging.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
KEY ENGINEERING MATERIALS
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2016
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IF 0
Peng Cheng Ruan,Hai Feng Chen,Jing Ling Hu,Jian Qiang Ye
Using Bi (NO3)3•5H2O, NH4VO3 as raw material and AgNO3, the Ag/BiVO4 were successfully prepared by a low-temperature solid-phase reaction. And Ag/BiVO4 samples were characterized by X-ray diffraction (XRD), Differential thermal analysis (DTA) and UV - visible diffuse reflectance spectroscopy (DRS). The Methyl Orange (MO) was simulated as the sewage under the visible light to study the influence of the illumination time and the amount of photocatalyst. The visible-light absorption scopes of BiVO4 were broaden by doping Ag, the UV-Visible absorption edge were slightly red shifted and the band gap was narrower comparing with the pure BiVO4. It was found that the catalytic effect of the Ag doped catalysts enhanced under the visible-light irradiation. And the cause of the enhanced catalytic effect also has been analyzed and discussed in the article.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
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