JOURNAL OF THE CHINESE CHEMICAL SOCIETY
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2017
·Vol. 64
·期 7
·795-803
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IF 0.935
Junyu Lu,Lianqiang Wei,Dongmei Yao,Xiuju Yin,Hongfang Lai,Xiuxiang Huang
β-AgVO 3 nanorods have been demonstrated to exhibit intrinsic peroxidase-like activity. The oxidation of glucose can be catalyzed by glucose oxidase (GO x ) to generate H 2 O 2 in the presence of O 2 . The β-AgVO 3 nanorods can catalytically oxidize peroxidase substrates including o -phenylenediamine (OPD), 3,3′,5,5′-tetramethylbenzidine (TMB), and diammonium 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonate) (ABTS) by H 2 O 2 to produce typical color reactions: OPD from colorless to orange, TMB from colorless to blue, and ABTS from colorless to green. The catalyzed reaction by the β-AgVO 3 nanorods was found to follow the characteristic Michaelis–Menten kinetics. Compared with horseradish peroxidase and AgVO 3 nanobelts, β-AgVO 3 nanorods showed a higher affinity for TMB with a lower Michaelis–Menten constant ( K m ) value (0.04118 mM) at the optimal condition. Taking advantage of their high catalytic activity, the as-synthesized β-AgVO 3 nanorods were utilized to develop a colorimetric sensor for the determination of glucose. The linear range for glucose was 1.25–60 μM with the lower detection limit of 0.5 μM. The simple and sensitive GO x -β–AgVO 3 nanorods–TMB sensing system shows great promise for applications in the pharmaceutical, clinical, and biosensor detection of glucose.
研究领域:
生物化学
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医学诊断
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
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2021
·
IF 3.995
Yongbo Chen,Yi Zhou,Jin Zhang,Jiaxin Li,Tiantian Yao,Anna Chen,Zhiyue Chen
Construction of heterojunction is an effective way to improve the photocatalytic activity of photocatalyst . In this work, a simple precipitation method was adopted to anchor rod-like AgVO 3 on Bi 4 Ti 3 O 12 nanosheets to form heterojunction . The results show that Ag can act as an electronic medium to construct Z-scheme heterojunctions, that more visible light can be absorbed and facilitates the separation of electron hole pairs compared with the pure Bi 4 Ti 3 O 12 . The AgVO 3 /Bi 4 Ti 3 O 12 composites displayed superior photocatalytic photodegradation of tetracycline (TC) under visible irradiation (λ > 420 nm). 12%AgVO 3 /Bi 4 Ti 3 O 12 (AgVO 3 with the mass ratio of AgVO 3 /Bi 4 Ti 3 O 12 = 12%) showed the highest photocatalytic degradation efficiency, 57% of TC was degraded within 60 min which was the 9.5 times and 2.5 times higher than pure AgVO 3 and Bi 4 Ti 3 O 12 . The capture experiment results showed that ·O 2 − and h + are the main active radicals in the process of TC degradation. The improved photocatalytic activity is attributed to the construction of Z-scheme heterojunction , which leads to expand the light absorption range and efficient separation of photogenerated carriers. In addition, the mechanism of the photocatalytic degradation of antibiotics was proposed.
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
ENVIRONMENTAL RESEARCH
·
2023
·
IF 8.3
Xueyu Wei,Saraschandra Naraginti,Xiaofan Yang,Xiaoping Xu,Jiyuan Li,Junwei Sun,Zhigang Liu,Jiang Pei
A superior semiconductor material with efficient charge separation and easy reuse could be a promising route for efficient photocatalytic hydrogen evolution and pollutant degradation . AgVO 3 is one of the best visible light active materials which has attracted much attention for several biological and environmental applications. In the aim of enhancing its stability and recyclability a novel AgVO 3 /rGO/CuFe 2 O 4 heterojunction was prepared by hydrothermal method for hydrogen generation (H 2 ) and 4-nitrophenol (4-NP) degradation as well. The composite was well characterized by XRD, SEM, HR-TEM, XPS and VSM. The morphological images suggested the rod shaped AgVO 3 and irregular shaped CuFe 2 O 4 are unevenly distributed on reduced graphene oxide (rGO) layers. The hydrogen evolution results indicated that the composite showed around 8.937 mmol g −1 h −1 of H 2 generation which was ∼2.3 times and ∼9.2 times higher than pure AgVO 3 (3.895 mmol g −1 h −1 ) and CuFe 2 O 4 (0.96 mmol g −1 h −1 ) respectively. The 4-NP degradation efficiency of the prepared composite was observed as 94.7% (k = 0.01841 min −1 ) which is much higher than the AgVO 3 (66.3%) and CuFe 2 O 4 (38.2%) after 4 h of irradiation. The higher efficiency could be attributed to the heterojunction formation and faster charge separation. The radical trapping results indicated that the •OH, O 2 •− and photogenerated h + are the main species responsible for efficient activity. The AgVO 3 /rGO/CuFe 2 O 4 heterojunction showed 49.6 emu/g of saturation magnetization and confirms that it could be easily separated with an external magnet, and showed 85.3% of degradation efficiency even after 6 recycles which indicated its higher stability and recyclability. Thus, our study provides new insight into hydrogen generation and phenol degradation using AgVO 3 based recyclable composites.
研究领域:
材料科学
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环境科学
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化学
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产品关联
DOI
PubMed
高影响因子
OPTICAL MATERIALS
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2022
·
IF 3.754
Weili Huang,Junhui Yi,Xiaoying Liao,Changquan Jiao,Runkun Xie,Beifang Chen,Zebo Lin,Yupeng Yang,Weitao Liu,Huimei Mo
AgVO 3 and AgI have attracted great interest in environmental remediation. Aiming at enhancing the catalytic activity and stability of AgVO 3 . Visible light response Z-scheme AgI/Ag/AgVO 3 hybrid nanorods were prepared by in situ reduction and ion exchange grown. The results of characterization and experiment showed that obtained hybrid material are primarily composed of AgVO 3 nanorods, whose surface were closely attached to AgI and Ag particles. Compared with AgVO 3 and Ag/AgVO 3 , the absorbance of Z-scheme AgI/Ag/AgVO 3 hybrid nanorods in the visible light region is dramatically enhanced. The degradation efficiency of sample is five times of that of AgVO 3 and four times of that of Ag/AgVO 3 , respectively. And the degradation efficiency still keep 90% after the fourth repeat experiment. The trapping experiments of active species confirmed that the contribution of the degradation for AO-II is mainly attributed to h + and ∙O 2 − . The efficient photocatalytic activity can be explained by Z-type mechanism, which promote effective separation of photogenerated charges. This study provides an idea for the design of efficient visible light photocatalysts .
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Hong Tian,Yumin Li,Qingping Dai,Shunlang Wei,Zhibin Qiu,Wenzhong Wang
Cadmium sulfide (CdS), as a potential photoelectrochemical (PEC) photoanode candidate, generally exhibits unsatisfactory hydrogen generation because of the serious recombination of charge carriers and photocorrosion. In this work, a feasible p-n heterostructure CdS/AgVO 3 nanorod arrays (NRAs) photoanode was fabricated by modifying n-type CdS nanorod arrays with p-type AgVO 3 nanoparticles for enhancing PEC hydrogen evolution property of CdS NRAs photoanode. In this p-n heterostructure CdS/AgVO 3 nanorod arrays photoanode, AgVO 3 with narrower band gap not only distinctly heightens the visible light absorption ability of CdS, but also significantly integrates with CdS to establish charge transfer path at CdS and AgVO 3 interface. The built-in electric field of the p-n junction improves the separation and transfer efficiency of photogenerated electrons (e − ) and holes (h + ). The CdS/AgVO 3 NRAs photoanode achieves an evident hydrogen evolution rate of 165.05 μmol cm −2 h −1 , higher than that of bare CdS (121.85 μmol cm −2 h −1 ) NRAs photoanode. This work offers an effective scheme to fabricate photoanode for efficiently turning the solar energy into a green and clean energy.
研究领域:
材料科学
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能源科学
✓ 已验证
产品关联
DOI
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
ADVANCED POWDER TECHNOLOGY
·
2017
·
IF 2.659
Junhui Yi,Jiaxing Song,Huimei Mo,Yupeng Yang
Ag/AgVO 3 nanorods have been obtained for the first time by one step hydrothermal method with the contribution of pyridine. The prepared sample was systematically characterized. Their photocatalytic properties were investigated by degrading acid orange II (AO-II) under visible light. Compared with pure AgVO 3 , Ag/AgVO 3 nanorods showed much higher photocatalytic activity and stability. The enhanced photocatalytic activity was attributed to Ag nanoparticles (NPs) with a strong surface plasmon resonance (SPR). Further studies indicate that the photogenerated holes (h + ) and superoxide radical anions ( O 2 − ) were major active species. Ag/AgVO 3 nanorods has a huge potential application in wastewater treatment.
研究领域:
材料化学
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环境科学
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纳米科技
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光催化
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废水处理
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Yiying Yue,Kaiyang Hou,Jiayue Chen,Wanli Cheng,Qinglin Wu,Jingquan Han,Jianchun Jiang
A nanofiltration (NF) membrane containing a NaOH-treated electrospun polyacrylonitrile (HPAN) substrate, an interfacial polymerization (IP) polyamide (PA) layer, a chitosan (CS) coating layer, and an Ag/AgBr/AgVO3 photocatalyst loading layer was prepared. The structural evolution of the membranes was investigated, and their performance was estimated in accordance with the water flux and rejection rate. A probable mechanism for the photocatalytic activity of Ag/AgBr/AgVO3 was proposed. The loading of the Ag/AgBr/AgVO3 heterojunction on the HPAN/PA/CS NF membrane endowed the membrane with excellent self-cleaning properties owing to the photolytic degradation of the dye. The filtration and degradation processes of the Ag/AgBr/AgVO3-loaded membrane constantly promoted each other, and the treatment efficiency achieved with the integrated (filtration + degradation) process was superior to those obtained with the filtration and degradation processes alone. The Ag/AgBr/AgVO3-NF membrane exhibited excellent recyclability and stability when subjected to five integrated filtration–degradation processes. In addition, the Ag/AgBr/AgVO3-NF membrane exhibited an elastic modulus of 65.75 MPa and a toughness of 38.9 kJ/m3 along with a good disinfection effect on Escherichia coli in visible light. The as-prepared photocatalyst-loaded NF membrane with excellent antifouling performance, antimicrobial activity, high strength, and recyclability showed potential for continuous water purification operation.
研究领域:
材料科学
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环境科学
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
Analytical Methods
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2024
·
IF 2.7
Dangqin Jin,Jiali Xiao,Hui Zhou,Qin Gao,Aiqin Gong,Qin Xu,Yun Shu
An ultra-sensitive photoelectrochemical sensing platform for profenofos detection based on the inhibition of catalase activity was prepared in this work. First, the novel functional nanocomposite material AgVO3/BiOI was prepared by a hot solvent method and successive ion layer adsorption reaction. Then, chitosan was employed as a dispersion medium to disperse and immobilize the catalase. Under visible light irradiation, the prepared CAT/CS/AgVO3/BiOI/ITO nanocomposite electrode generates a stable low photocurrent in hydrogen peroxide solution. When this electrode is immersed in a phosphate buffer solution containing profenofos, the activity of the catalase is inhibited, resulting in an increase in the photocurrent. Under the optimized experimental conditions, the profenofos concentration and increase in photocurrent are linearly related in the concentration range of 1 × 10−10 to 5.0 × 10−8 mol L−1, and the limit of detection is 1.0 × 10−11 mol L−1. This biosensor shows good selectivity for detecting profenofos in fruits and vegetables, and the determination results of profenofos are satisfactory.
研究领域:
生物传感
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材料科学
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环境监测
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产品关联
DOI
PubMed
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2024
·
IF 5.5
Zhixin Chen
Background Energy shortages and environmental pollution are two of the most immediate problems all over the world. Photocatalysis is expanding into energy and environmental applications. Methods In this study, novel visible-light-driven Ag 2 WO 4 /AgVO 3 composite photocatalysts were constructed via a one-pot, controllable, ligand-free and eco-friendly approach and analyzed using different techniques. Under visible light irradiation, photocatalytic behavior of type-II heterojunctions in the degradation of levofloxacin hydrochloride is investigated. Significant findings Various characterizations showed that Ag 2 WO 4 was successfully loaded onto the AgVO 3 surface, which improved the separation and transfer efficiency of the photogenerated charge carriers. Under optimal experimental conditions, the removal efficiency of levofloxacin reached 0.0194 min - 1 for the Ag 2 WO 4 /AgVO 3 composites with a 3 : 5 mass ratio (3-WV), which was 5.87 and 17.64 times that of pure AgVO 3 and Ag 2 WO 4 , respectively. The photocatalytic mechanism of typical type-II heterojunction was discussed. Furthermore, possible photodegradation pathway of levofloxacin was comprehensively determined by LC-MS analysis. This work will provide new motivation for the design and synthesis of simple preparation and highly efficient photocatalysts for environmental purification.
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
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Lili Gao,Xuefeng Long,Shenqi Wei,Chenglong Wang,Tong Wang,Feng Li,Yiping Hu,Jiantai Ma,Jun Jin
BiVO 4 is largely restricted by its intrinsic poor electron mobility and sluggish surface reaction. Aiming at eliminating the deficiency of BiVO 4 , we assemble a novel composite photoanode through simultaneous bulk and surface modification. In detail, controllable Mo doping is manipulated through a spin-coating method, and AgVO 3 nanoparticles are loaded by successive ionic layer adsorption and reaction (SILAR) process. The as-prepared photoanode boosts the photocurrent density by 7 folds at 1.23 V vs. RHE and moves the onset potential negatively by 387 mV compared to the bare BiVO 4 . Furthermore, the charge injection efficiency is substantially boosted to 49% at 1.23 V RHE , nearly 5 times as that of pure BiVO 4 . With detailed physical and electrochemical characterization, we reveal the essential reason for the boosted photoelectrochemical activity. Appropriate Mo doping can simultaneously enhance the carrier density and electron mobility of BiVO 4 . Specifically, more (0 4 0) facet are exposed for retarding charge recombination and increasing photocatalytic reaction sites. Then the simple SILAR process grows AgVO 3 nanoparticles homogeneously with uniform diameter of 3–5 nm on BiVO 4 , forming p-n heterojunction to accelerate charge separation, and abundant oxygen vacancy emerged on the surface, which has been demonstrated as active sites for water oxidation reaction.
研究领域:
材料科学
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光电化学
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纳米技术
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电化学
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DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2025
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IF 4.6
Hong Tian,Yumin Li,Qingping Dai,Shunlang Wei,Bing Lv,Jun Wei,Yupei Qiao
FeVO 4 is recognized as a potential photoelectrode material on account of its relatively narrow bandgap and suitable conduction and valence band positions. However, its photoelectrochemical water splitting performance remains unsatisfactory owing to rapid carrier recombination and poor charge transport capabilities. Herein, a novel p-n FeVO 4 /AgVO 3 heterostructure photoanode was developed by depositing p-type AgVO 3 nanowires onto n-type FeVO 4 nanoporous structures, boosting the PEC properties of the base material. The incorporated AgVO 3 nanostructures enhance light absorption in the visible spectrum, facilitate effective electron-hole separation through optimized interfacial charge transport pathways, and simultaneously extend the carrier lifetime. The built-in electric field in the p-n heterostructure promotes more effective separation and directional motion of photoinduced charge carriers. As a result, the transient photocurrent density of the FeVO 4 /AgVO 3 heterojunction photoanode reaches 0.22 mA cm −2 , which is 3.35 times that of bare FeVO 4 (0.06 mA cm −2 ). Notably, the incorporation of AgVO 3 nanowires significantly improves the photostability of the FeVO 4 photoanode. This work provides a feasible strategy from the perspective of interface engineering for designing high-performance FeVO 4 -based photoelectrodes to enhance photoconversion efficiency.
研究领域:
材料科学
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物理化学
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能源化学
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纳米科技
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半导体光电化学
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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）