RSC Advances
·
2020
·Vol. 10
·期 25
·14670-14678
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IF 3.119
Yang Yang,Junting Liang,Wenwen Jin,Yingyue Li,Menghui Xuan,Shijie Wang,Xiaoqian Sun,Chuanliang Chen,Jianhua Zhang
In this study, the CuS/BiVO4-X (where X represents the mass percentage of CuS associated with CuS/BiVO4; X = 2%, 5% and 7%) p–n heterostructures were fabricated using a two-step hydrothermal method. The structural and morphological features were ascertained in great detail using several physical characterization processes. According to the results of the photoelectrochemical (PEC) experimental processes, the PEC properties of CuS/BiVO4-5% were much more obvious as compared to those of pure BiVO4, CuS and CuS/BiVO4-X. Moreover, the photoluminescence (PL) and UV-vis diffuse reflection spectra (DRS) affirmed that the CuS/BiVO4-5% demonstrates an excellent capacity for absorbing visible light and low electron recombination rate as compared with the other composites. Accordingly, PEC sensors with CuS/BiVO4-5% were fabricated for the detection of dopamine (DA) and bisphenol A (BPA) with outstanding selectivity and stability. For DA, it implied a broad linear range from 0.01–10 μM and 10–120 μM, and for BPA, the broad linear range was 0.01–90 μM. Thus, the PEC sensor has significant potential application when it comes to DA and BPA detection.
研究领域:
材料科学
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分析化学
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DOI
PubMed
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
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2021
·
IF 4.094
Yaping Li,Xianglin Sun,Yiming Tang,Yun Hau Ng,Lintao Li,Feng Jiang,Jing Wang,Weirui Chen,Laisheng Li
The coral-like BiVO 4 was successfully constructed on ZnO nanorods grown on FTO substrates to reveal exceptional photoinduced charge migration kinetics as well as the underlying photoelectrocatalytic degradation process. The orderly ZnO nanorods array accelerated the separation of photogenerated carriers, while the three-dimensional coral structure of ZnO/BiVO 4 nanocomposite increased the efficiency of light absorption and mass transfer, thus improving the photoelectrochemical properties. Fine interfacial contact between ZnO and BiVO4 led to the optimized photoelectrochemical performance with a photocurrent density of 0.29 mA/cm2 at 0 V vs . Ag/AgCl under visible light illumination (λ ≧ 420 nm), which was 3.2 times, 1.6 times of that of pristine ZnO and BiVO4. Moreover, the photoelectrocatalytic degradation efficiency of tetracycline from the ZnO/BiVO4 nanocomposite on was c. a. 84.5% and the main degradation paths were analyzed by LC-MS. Radical scavengers were employed to evaluate the capability to produce •O 2 − and •OH active species upon visible light illumination. This study elucidated the reaction mechanisms of the ZnO/BiVO4 nanocomposite during the photoelectrocatalytic degradation process.
研究领域:
环境科学
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材料科学
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光催化
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Shengjun Ye,Xiao Zhou,Yanbin Xu,Weikang Lai,Kai Yan,Lu Huang,Jiayin Ling,Li Zheng
To enhance the photocatalytic performance of bismuth vanadate (BiVO 4 ) and reveal its catalytic mechanism, a multi-walled carbon nanotube photocatalyst (MWCNT/BiVO 4 ) was prepared by sol-gel preparation and an electro-spinning process. Oxytetracycline was used as the target trace persistent pollutant to research its potential degradation pathways catalyzed by MWCNT/BiVO 4 . X-ray powder diffraction spectroscopy (XRD), Raman spectra, field emission scanning electron microscopy (FE-SEM) and field emission transmission electron microscopy (FE-TEM) were used to observe the crystalline phase, morphological structure of MWCNT/BiVO 4 . The modification by MWCNTs caused changes of functional groups on the surface and a binding energy shift of Bi4f and V2p, as determined from X-ray photoelectron spectroscopy (XPS). Ultraviolet–visible diffuse reflectometry (UV–Vis DRS) revealed that the band gap became narrower and photoluminescence spectra suggested the recombination of photogenerated electron–hole pairs were inhibited after MWCNT modification. All of the characterizations showed enhancement of catalytic performance of MWCNT/BiVO 4 . The results from the high-performance liquid chromatography (HPLC) indicated that the degradation rate of oxytetracycline had increased by 42.2% and reached 88.7% within 60 min. Electron paramagnetic resonance (EPR) signals of ·OH and ·O 2 − were detected and potential photocatalytic mechanisms of the photocatalysts were put forward. Six reaction pathways were proposed based on ultra-performance liquid chromatography triple-quadrupole tandem mass spectrometry (UPLC–MS/MS) results: demethylation (−14 Da), secondary alcohol oxidation (−2 Da), dehydration (−18 Da), hydroxylation (+16 Da), decarbonylation (−28 Da) and deamination (−15 Da). The present study provides a reference for the application of photocatalytic degradation by MWCNT/BiVO 4 on hard degradable substances in aquatic environment.
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
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Sitong Liu,Wenzhong Wang,Ying Cheng,Lizhen Yao,Yuhong Liu,Mingjuan Lin,Huabin Chen,Yujie Liang,Junli Fu,Lijuan Wang
In this study, we demonstrate for the first time the construction of a ternary BiVO 4 /FeVO 4 /Cu 2 O nanorod array (NRA) photoelectrode via seed-assisted refluxing, hydrothermal and successive ionic-layer adsorption and reaction (SILAR) method and its photoelectrochemical (PEC) water oxidation performance. The energy band structures of the BiVO 4 , FeVO 4 and Cu 2 O show that two type-II band alignments with a ladder-like structure are formed in the constructed ternary BiVO 4 /FeVO 4 /Cu 2 O NRA photoelectrode, enabling the photoelectrode to display substantially enhanced PEC performance. The constructed ternary photoelectrode loaded with the optimized Cu 2 O nanoparticles achieves a zero-bias photocurrent density of 50 μA cm −2 , 5 times higher than that of the pure BiVO 4 NRA photoelectrode. The measurements of optical property reveal that the constructed BiVO 4 /FeVO 4 /Cu 2 O nanorod arrays (NRAs) demonstrate improved light absorption capability. The electrochemical impedance and photoluminescence measurements confirm that the charge carriers of the BiVO 4 /FeVO 4 /Cu 2 O heterojunction NRAs are transferred and separated effectively. The substantially boosted PEC water oxidation activity of the constructed ternary BiVO 4 /FeVO 4 /Cu 2 O heterojunction NRA photoelectrode is ascribed to the improved light harvesting and effective charge separation.
研究领域:
材料科学
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能源科学
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产品关联
DOI
高影响因子
POWDER TECHNOLOGY
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2025
·
IF 4.6
Chi Thi Ha Nguyen,Kien Trung Nguyen,Bac Quang Nguyen,Chuc Ngoc Pham,Quang Van Ngo,Hoanh Ngoc Dao,Ha Thi Viet Luu,Mai Vu Ngoc Nguyen,Nhiem Ngoc Dao
This work attempts to remediate amoxicillin (AMX) as a long-life antibiotic model in aquatic environments using the BiVO 4 (BVO) semiconductor photocatalyst. Monoclinic clinobisvanite BVO materials (BVO90, BVO120, BVO150, and BVO180) were prepared by the hydrothermal method at different calcination temperatures (90, 120, 150, and 180 °C). The homogeneous BVO150 particles with a visible-light-response bandgap energy of 2.36 eV showed the highest performance for AMX photodegradation within the as-prepared catalyst. AMX degradation in the solutions containing an initial AMX concentration of ≤10 ppm and a BVO150 dosage of ≥50 mg/L at pH 4 demonstrated a photodegradation efficiency of ≥93 % after 120 min. Moreover, AMX degradation on BVO photocatalysts also followed a pseudo-first-order kinetic model. The evaluation of BVO150 before and after five cycles of AMX photodegradation exhibited good durability and stability of materials. Finally, based on the data obtained from product analyses, a proposed mechanism and degradation pathway were discussed.
研究领域:
环境科学
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材料科学
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光催化技术
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Yifei Wang,Jing Niu,Xin Gao,Yanlin Zhang
In this study, Y-doped Ag 3 PO 4 , carbon quantum dots (CQDs), BiVO 4 were used to synthesize Z-scheme Y-Ag 3 PO 4 /CQDs/BiVO 4 . X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FT-IR) and UV–vis diffuse reflectance spectra (DRS) were employed to probe into the crystalline structure, morphology, optical property and chemical composition of Y-Ag 3 PO 4 /CQDs/BiVO 4 . The kinetic constant of the prepared Y-Ag 3 PO 4 /CQDs/BiVO 4 was approximately 2.8 times that of pristine Ag 3 PO 4 for atenolol degradation. The degradation of atenolol mainly depended on the excited holes, •OH and •O 2 − . The photocatalysis mechanism of Y-Ag 3 PO 4 /CQDs/BiVO 4 conforms to the Z-scheme mechanism deduced by reactive species trapping experiment, electron spin resonance (ESR) and photoelectrochemical measurement (photocurrent response and EIS). The introduction of yttrium, CQDs and BiVO 4 significantly promoted the photogenerated carriers separation of Ag 3 PO 4 and inhibited the photogenerated electron-holes pairs recombination of Ag 3 PO 4 during the degradation of atenolol. Oxygen defects caused by the doping of Y 3+ into Ag 3 PO 4 were the centers of capture of photogenerated electrons to generate •O 2 − , inhibiting the recombination of photogenerated electron-holes pairs and the photocorrosion of Ag 3 PO 4 .
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 POWER SOURCES
·
2025
·
IF 7.9
Jinwang Li,Jianglin Tu,Zhefei Pan,Xun Zhu,Dingding Ye,Yang Yang,Liang An,Rong Chen,Qiang Liao
BiVO 4 is a promising semiconductor for photoelectrochemical water oxidation, yet its performance is still limited by rapid charge recombination and sluggish reaction kinetics. To address these challenges, a WO 3 /BiVO 4 /Ti 3 C 2 /TiO 2 photoanode is developed via the integration of the WO 3 /BiVO 4 heterojunction with the Ti 3 C 2 /TiO 2 Schottky junction. This architecture establishes an internal electric field and cascaded charge transport pathway, collectively suppressing charge recombination. The carrier lifetime is extended to 3.112 ns compared to the WO 3 /BiVO 4 heterojunction (2.111 ns). The hydrophilic nature of Ti 3 C 2 facilitates charge transfer at the photoanode/electrolyte interface. Moreover, the optical absorption edge of the developed photoanode is extended, improving solar energy utilization. Because of these merits, the WO 3 /BiVO 4 /Ti 3 C 2 /TiO 2 photoanode yields a photocurrent density of 3.70 mA cm −2 at 1.23 V vs. RHE, presenting an increase by 126 % over the WO 3 /BiVO 4 photoanode. This work demonstrates a promising interfacial engineering approach to develop high-performance photoanodes.
研究领域:
材料科学
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电化学
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纳米技术
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能量转换
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半导体物理
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产品关联
DOI
高影响因子
CHEMICAL PHYSICS LETTERS
·
2022
·
IF 2.719
Zuxing Zhang,Liying Zhai,Mingqing Li,Jiahui Wu,Li Li
The obtained RGO/BiVO 4 composites were first applied to tetracycline hydrochloride (TCH) photoelectrochemical (PEC) monitoring platform. The RGO/BiVO 4 nanocomposites exhibited higher PEC activity, which benefited from the accelerated electron transfer induced by loading of RGO. The RGO/BiVO 4 electrode exhibited a linear response in the concentration range of 0.1 μM – 1 mM with a sensitivity of 45 μA mM cm −2 and a detection limit of 0.922 μM. Furthermore, the designed RGO/BiVO 4 PEC sensor exhibits good reproducibility, long-term stability and selectivity. In summary, the designed materials have outstanding electrochemical properties, which provide ideal candidates for PEC detection of TCH.
研究领域:
分析化学
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环境科学
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材料科学
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DOI
高影响因子
Science China-Materials
·
2024
·Vol. 67
·期 5
·1564-1573
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IF 6.8
Tian Ze,Wang Zhenxia,Ma Zizai,Li Jinping,Wang Xiaoguang
Photoinduced charge separation and transfer are the core factors affecting the photoelectrochemical performance of BiVO 4 -based photoanodes. Herein, a hole extraction layer was inserted between a BiVO 4 photoanode and an oxygen evolution cocatalyst (OEC). The introduction of Cu 2 O as a hole extraction layer between the OEC layer (FeOOH/NiOOH) and BiVO 4 optimized the migration paths and extended the lifetimes of the photogenerated holes, thus enhancing the photoelectrochemical performance of the photoelectrode. The charge separation efficiency of the optimized BiVO 4 /Cu 2 O/FeOOH/NiOOH photoanode was 92.0% significantly higher than the 70.6% efficiency for pure BiVO 4 . As expected, this photoanode also displayed a high photocurrent density of 3.85 mA cm −2 at 1.23 V RHE (under AM 1.5G illumination), which was 2.77 times greater than that of pure BiVO 4 . Our results indicate that electrodepositing a Cu 2 O hole extraction layer is a simple and scalable method for increasing the photoelectrochemical activity of BiVO 4 photoanodes for solar water splitting.
研究领域:
材料科学
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能源科学
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产品关联
DOI
高影响因子
RSC Advances
·
2025
·Vol. 15
·期 17
·13313-13322
·
IF 4.6
Hengxin Ren,Xinyu Sun,Tong Li,Zhixin Ren,Chaoyu Song,Yuguang Lv,Ying Wang
Herein, a new Z-scheme BiVO4/Cu2O/PPy heterostructure photocatalyst was developed with bismuth nitrate and ammonium vanadate as the precursors and sodium dodecyl benzyl sulfonate as the soft template. Through the spatial confinement effect of the sodium dodecyl benzyl sulfonate soft template, peanut-like BiVO4 and the BiVO4/Cu2O/PPy heterojunction were synthesized. The best performance was observed for BiVO4/Cu2O/PPy (5%), and its photodegradation rate was 6.57 times higher than that of pure BiVO4. The mechanism study showed that a light hole (h+), superoxide radical (·O2−), and hydroxyl radical (·OH) participated in the CO2 reduction process, which was different from the pure BiVO4 reaction system. Therefore, the proposed approach provides a new method for applying BiVO4/Cu2O/PPy photocatalysts and developing the same type of heterojunction photocatalyst, and they have effective practical application for environmental remediation.
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
PubMed
高影响因子
ENVIRONMENTAL RESEARCH
·
2023
·
IF 8.3
Xiaoju Wang,Shanshan Hu,Haitao Mao,Xueyu Wei,Saraschandra Naraginti
In the recent past, the development of efficient materials for degradation and detoxification of antibiotics has gained more attention in wastewater treatment process . As a visible light active material AgVO 3 has attracted much concern in environmental remediation. To improve its efficiency and stability, a novel heterojunction was prepared by combining AgVO 3 with rGO and BiVO 4 through a hydrothermal method. The prepared AgVO 3 /rGO/BiVO 4 composite was further utilized for effective detoxification of Norfloxacin (NFC) antibiotic. The morphological analysis revealed the clear rod shaped AgVO 3 and leaf like BiVO 4 that are evenly distributed on reduced graphene oxide (rGO) layers. The visible light absorbance and the catalytic activity of AgVO 3 /rGO/BiVO 4 was dramatically improved compared to pure AgVO 3 and BiVO 4 . From the results it showed that the degradation efficiency of AgVO 3 /rGO/BiVO 4 (∼96.1%, k = 0.01782 min −1 ) was 2.5 times higher than pure AgVO 3 and 3.4 times higher than the pure BiVO 4 respectively towards NFC after 90 min. The higher efficiency could be attributed to the heterojunction formation and faster charge separation. The radical trapping experiments results indicated that the •OH, and O 2 •− are the main species responsible for degradation. The degradation products of NFC were analysed through ESI-LC/MS and pathway was proposed. Furthermore, the toxicity assessment of pure NFC and its degradation products was studied using E. coli as the model bacteria through colony forming unit assay and the results indicated the efficient detoxification was attained during the degradation process. Thus, our study provides new insight into detoxification of antibiotics using AgVO 3 based composites
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 11
·6327-6336
·
IF 10.733
Jingchao Liu,Jianming Li,Mingfei Shao,Min Wei
To achieve highly efficient photoelectrochemical (PEC) water splitting, great efforts have been dedicated to develop various photoelectrode materials in pure water electrolytes. Recently, some studies are turning to hydrogen production from seawater or wastewater, to save valuable freshwater resources and make waste profitable. Here, we fabricate one-dimensional SnO2@BiVO4 core–shell nanorod arrays decorated with cobalt-phosphate cocatalyst (1D SnO2@BiVO4/Co-Pi NRAs), which show efficient charge separation and transport properties due to the rational design of conducting core-layer and introduction of the cocatalyst. The as-obtained SnO2@BiVO4/Co-Pi photoanodes exhibit largely enhanced PEC water oxidation performance: the maximum photocurrent density of 2.63 mA cm−2 at 1.23 V vs. RHE is 6.58 times higher than that of pristine BiVO4 films (∼0.40 mA cm−2). Moreover, the ternary photoanode exhibits promising PEC performance for urea oxidation, giving rise to a current density of 3.44 mA cm−2 at 1.23 V vs. RHE in a neutral urea electrolyte. This work presents a sunlight-driven, eco-friendly and sustainable method to produce hydrogen and simultaneously treat urea-rich wastewater.
研究领域:
材料科学
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能源与环境科学
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光催化
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）