Chemosensors
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2024
·Vol. 12
·期 6
·103
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IF 3.7
Yujie Cao,Xiangyu Zhou,Ziling Wang,Yi Li,Minglei Yan,Yun Zeng,Jie Xiao,Yang Zhao,Jun-Heng Fu
The utilization of bismuth as a sensing material for the detection of heavy metal ions has gained significant attention due to its exceptional interfacial activity and selective absorption properties. However, it also poses challenges in terms of agglomeration and its inferior electrical conductivity during the synthesis process. This paper employed a facile in situ synthesis and electrodeposition approach to uniformly grow a bismuth film on a conductive carbon cloth, designated as Bi/Ag@CC. The Bi/Ag@CC electrode material exhibited benign electrochemical properties, enabling its application for detecting Pb2+in tap water and lake water samples. Furthermore, this work investigated the impact of electrochemical parameters, including electrolyte pH, deposition potential and pre-enrichment time, on the detection performance. The results demonstrated the sensor’s wide linear range (from 20 to 400 ppb) and detection limits (0.15 ppb) for heavy metal ion detection, along with excellent anti-interference capabilities and satisfactory repeatability, with an RSD of less than 2.31% (n = 6). This paper offers a novel strategy for positioning the bismuth-based composite as a promising candidate for practical electrochemical sensing applications.
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
MICROCHEMICAL JOURNAL
·
2021
·
IF 4.821
Daixiong Zhang,Qing Xiang
In this work, a Sn-Bi film was successfully fabricated via the electrophoretic deposition (EPD) of nano-Sn powders and nano-Bi powders in an ethanol dispersion medium. Study on film composition showed that a coefficient of proportionality between the mass ratio in the deposited film and that in the suspension was observed for the EPD of Sn-Bi, which controlled the composition of the Sn-Bi film. Therefore, Sn-Bi films with different mass ratios were designed with this linear relationship for the codetection of Cd(II) and Pb(II). Square-wave anodic stripping voltammetry (SWASV) measurements using an in-situ plating strategy were performed after the electrochemical oxidation of Sn and Bi at 0.3 V for 120 s, and the results indicated that the Sn-Bi film with a mass ratio of 0.75 had the best determination ability.
研究领域:
分析化学
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环境科学
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DOI
高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2017
·Vol. 33
·期 6
·929-933
·
IF 1.024
Bu Luxia,Liu Daying,Wei Zhen,Ma Zhanlin
The preparation and characterization of homogeneous and colorless ionic liquid analogs(ILAs) containing choline chloride(ChCl), malonic acid and bismuth chloride were investigated. The structure of the above mixture was preliminarily analyzed, and then the physicochemical properties including viscosity, conductivity and density were investigated as functions of temperature and composition. Additionally, the thermal stability of the ILAs and the electrochemical behavior of Bi3+ ions in the medium were studied. Structure analysis reveals that the synthesis of deep eutectic solvents(DESs) is closely related to the formation of hydrogen bonds between malonic acid and ChCl, with their viscosity, conductivity and density being greatly dependent on the temperature and composition. Thermogravimetric analysis demonstrates that the ILAs are very stable between room temperature and 398.15 K. And the electrochemical experiments indicate that the bismuth films can be successfully deposited from this ILAs and the deposition mechanism of bismuth is a rather irreversible process. The surface morphology of bismuth films deposited on Cu substrates was very compact and smooth. Thus, ChCl-malonic acid DESs were shown to be a good alternative to aqueous solvents for various deposition-related applications.
研究领域:
材料科学
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电化学
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DOI
高影响因子
Nano Energy
·
2023
·
IF 17.6
Lei Shi,Ze Li,Wenyue Zhao,Zhao Wang,Yazhou Peng,Chang Gao,Wenjing Hua,Jie Wang,Xiaoxia Yang,Weidong Fei,Yu Zhao
Photovoltaic effects of single-layer films, with simple structure and low cost, are generally found in ferroelectric films , but their applications in solar cell are restricted by the large band gap of ferroelectrics . Here, we demonstrate a large photovoltaic effect can be obtained in paraelectric single-layer BiVO 4 (BVO) film based on the gradient distribution of charges. The circuit current density ( J SC ) and open circuit voltage ( V OC ) of the BVO film with best performance are 1.63 mA/cm 2 and 0.38 V, respectively. The J SC of BVO film kept 86% of the maximum value after continuous operation for 16 h. The high thermal stability of BVO is proved by long time operation and stable photovoltaic performance at high temperature. This work not only proposes a novel built-in electric field mechanism, but also indicates that the single-layer paraelectrics can be used as the next generation photovoltaic materials.
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
Frontiers in Energy
·
2023
·
IF 2.9
Wang Zhouzhou,Wu Qingwei,Wang Jieming,Yu Ying
Hydrogen production from photoelectrochemical (PEC) water splitting has been regarded as a promising way to utilize renewable and endless solar energy. However, semiconductor film grown on photoelectrode suffers from numerous challenges, leading to the poor PEC performance. Herein, a straightforward sol-gel method with the ligand-induced growth strategy was employed to obtain dense and homogeneous copper bismuthate photocathodes for PEC hydrogen evolution reaction. By various characterizations, it was found that the nucleation and surface growth of CuBi 2 O 4 layer induced by 2-methoxyethanol ligand (2-CuBi 2 O 4 ) demonstrated a decent crystallinity and coverage, as well as a large grain size and a low oxygen vacancy concentration, leading to the good ability of light absorption and carrier migration. Consequently, under simulated sunlight irradiation (AM1.5G, 100 mW/cm 2 ), the 2-CuBi 2 O 4 photocathode achieved an enhanced photocurrent density of −1.34 mA·cm −2 at 0.4 V versus the reversible hydrogen electrode and a promising applied bias photon-to-current efficiency of 0.586%. This surface modification by ligand growth strategy will shed light on the future design of advanced photoelectrodes for PEC water splitting.
研究领域:
材料科学
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能源科学
·
光催化
✓ 已验证
DOI
高影响因子
JOURNAL OF INORGANIC BIOCHEMISTRY
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2021
·
IF 4.155
Hui Chong,Gaomin Zhang,Yaohang Wu,Bin Xu,Guoxiu Wang,Chengyin Wang
Addition of D-Asp in the electrochemical deposition process of Bismuth film resulted the generation of a new diffraction peak in X-ray diffraction (XRD) spectrum. This phenomenon was not observed in the situation of L-Asp. The new diffraction peak might suggest D-Asp could result in the generation of a specific Bismuth structure. Enantioselective recognition of D- and L-Asp can be realized based on this new XRD peak. The limit of detection was determined to be 3.5 × 10 −8 and 1.7 × 10 −8 mol L −1 for D- and L-Asp, respectively. The XRD spectra of electrodeposited Copper films fabricated in the presence of D- or L-Asp showed different lattice plane diffraction peak intensity ratios. The reason was believed to be chirality induced different binding capabilities of Asp enantiomers that influenced Copper film growth. Therefore, the combination of electrochemical deposition using Copper as metal source and XRD technology can be used to achieve enantioselective recognition of Asp. The limit of detection for D- and L-Asp were determined to be 1.5 × 10 −10 and 1.2 × 10 −11 mol L −1 , respectively.
研究领域:
分析化学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CRYSTAL GROWTH & DESIGN
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2022
·
IF 4.01
Yao Chen,Bingchu Mei,Huiling Liu,Zaichun Sun,Huijuan Zhang
Achieving the synthesis of bismuth sulfide (Bi2S3) thin films with high crystallinity and controllable morphology via simple and energy-saving deposition processes is highly desired. A novel, green, and open-air pressure solution-based deposition technique was developed to prepare horizontally orientated Bi2S3 thin films by applying less toxic and commercially available BiCl3 and thiourea as precursors. The deposition time was effectively shortened to the minute level via controlling the mixing mode of the precursors. The crystallinity and surface morphology of Bi2S3 were highly dependent on the synthesis temperatures. Bi2S3 thin films synthesized at a moderate temperature of 450 °C possessed a continuous surface with high crystallinity and exhibited superior photoelectrochemical performance with a high photocurrent density of 2.6 mA/cm2 at 0.6 V vs Ag/AgCl. The promising photoelectrochemical performance can be attributed to the high transfer efficiency of photogenerated electron–hole pairs owing to the small interfacial resistance and long lifetime of photogenerated carriers.
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2020
·
IF 3.573
Daixiong Zhang,Qing Xiang
Nafion-modified coatings can enhance the detection performance of bismuth film electrodes (BFEs). In this work, different coatings (graphene sheets (GS), carbon nanotubes (CNTs), activated carbon (AC), bismuth (Bi), and bismuth trioxide (Bi2O3)) were prepared by Nafion-assisted electrophoretic deposition (EPD). For successful EPD in ethanol, 0.1 mM NaOH + 0.1 g·L–1 Nafion is suggested as a suitable biadditive. With the in situ formation of a BFE on a coating via the square wave anodic stripping voltammetry (SWASV) method, the GS coating prepared by Nafion-assisted EPD exhibits better detection sensitivity and repeatability than the GS coating prepared by the drop method. Therefore, based on the result that the coatings of GS, CNT, AC, Bi, and Bi2O3 can be prepared by EPD with the biadditives of NaOH + Nafion, as well as the fact that both Nafion and EPD can help improve the detection sensitivity of the BFEs formed on these coatings, a novel and general strategy for designing a series of Nafion-modified single-component coatings or bicomposite coatings to form BFEs with good detection performance can be feasibly realized via electrophoretic codeposition.
研究领域:
分析化学
·
材料科学
✓ 已验证
DOI
高影响因子
Journal of Physical Chemistry C
·
2014
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IF 4.835
Haijing Yu,Huili Bao,Ke Zhao,Zhonglin Du,Hua Zhang,Xinhua Zhong
Bi2S3 films consisting of two-dimensional interconnected Bi2S3 single-crystalline nanorod networks have been fabricated on a F:SnO2 (FTO) glass substrate through the formation of intermediate BiOI nanosheets from layer-structured BiI3 by chemical vapor deposition and subsequent hydrothermal transformation into Bi2S3 networks. A continuous lattice and structure-directed topotactic transformation mechanism is supposed for the formation of Bi2S3 network film. The prepared Bi2S3/FTO films were employed as counter electrode (CE) for CdSe quantum dot-sensitized solar cells for the first time and showed better photovoltaic performance than that from the convenient Pt CE. The influence of the preparation conditions for Bi2S3/FTO films on the resulting solar cell performance was systematically investigated and optimized with use of J–V curves, scanning electron microscopy (SEM), UV–vis absorption, and electrochemical impedance spectroscopy. To further improve the cell device efficiency, the modification of the Bi2S3 network CE with metal particles was also studied.
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
ELECTROCHIMICA ACTA
·
2013
·
IF 3.777
Ruizhuo Ouyang,Wangyao Zhang,Shilin Zhou,Zi-Ling Xue,Lina Xu,Yingying Gu,Yuqing Miao
We report here the successful fabrication of an improved Bi film wrapped single walled carbon nanotubes modified glassy carbon electrode (Bi/SWNTs/GCE) as a highly sensitive platform for ultratrace Cr(VI) detection through catalytic adsorptive cathodic stripping voltammetry (AdCSV). The introduction of negatively charged SWNTs extraordinarily decreased the size of Bi particles to nanoscale due to electrostatic interaction which made Bi(III) cations easily attracted onto the surface of SWNTs in good order, leading to higher quality of Bi film deposition. The obtained Bi/SWNTs composite was well characterized with electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM), the static water contact angle and the voltammetric measurements. The results demonstrate the improvements in the quality of Bi film deposited on the surface of SWNTs such as faster speed of electron transfer, more uniform and smoother morphology, better hydrophilicity and higher stripping signal. Using diethylene triaminepentaacetic acid (DTPA) as complexing ligand, the fabricated electrode displays a well-defined and highly sensitive peak for the reduction of Cr(III)–DTPA complex at −1.06 V (vs. Ag/AgCl) with a linear concentration range of 0–25 nM and a fairly low detection limit of 0.036 nM. No interference was found in the presence of coexisting ions, and good recoveries were achieved for the analysis of a river sample. In comparison to previous approaches using Bi film modified GCE, the newly designed electrode exhibits better reproducibility and repeatability toward aqueous detection of trace Cr(VI) and appears to be very promising as the basis of a highly sensitive and selective voltammetric procedure for Cr(VI) detection at trace level in real samples.
研究领域:
分析化学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROANALYSIS
·
2018
·Vol. 30
·期 9
·1906-1912
·
IF 2.851
Danfeng Qin,Le Wang,Sanshuang Gao,Ying Wang,Xamxikamar Mamat,Yongtao Li,Thomas Wagberg,Hao Cheng,Guangzhi Hu
In this work, N-doped hollow porous carbon spheres (N-HPCSs) were synthesized by silicon dioxide template-assisted polybenzoxazine (PB) coating strategy. The prepared N-HPCSs have a smooth hollow ball structure surrounded by a well-defined porous shell. Combining with in-situ plating of Bi film, the N-HPCSs were further fabricated a sensitive electrochemical platform for determination trace levels of Cd(II) by differential pulse anodic stripping voltammetry (DPASV). Under the optimized conditions, the Bi-N-HPCSs based sensor displays a linear response to Cd(II) over the range of 0.5 μg L −1 to 150 μg L −1 . Meanwhile, the limit of detection (LOD, S/N=3) is estimated to be around 0.16 μg L −1 for Cd(II), which is 31 times lower than the safety values set by United States Environmental Protection Agency (EPA) for the drinking water. Moreover, the proposed method was successfully applied to detection of Cd(II) in tap water and lake water, and the analytical results of the presented method are agreed well with inductively coupled plasma-mass spectrometry (ICP-MS) data. Due to the excellent analytical performance, the fabricated electrode is promised for future development in monitoring of cadmium pollution in the environment.
研究领域:
环境科学
·
分析化学
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产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2016
·
IF 4.803
Lili Xiao,Biwei Wang,Li Ji,Fu Wang,Qunhui Yuan,Guangzhi Hu,Angang Dong,Wei Gan
Recently, ordered mesoporous carbon has displayed attractive performance in electrochemical catalysis and sensing, benefiting from its rich and tunable pore texture. In this work, a novel electrochemical sensor based on a three-dimensionally interconnected mesoporous graphene framework (MGF) was developed for simultaneous determination of Cd(II) and Pb(II) in aqueous solution. Attributable to the abundant three-dimensional mesopores and good electrical conductivity of MGF, as well as the synergistic effect of Nafion and in-situ plated bismuth films, a highly sensitive determination of mixed metals at a Bi/MGF-Nafion/GCE is achieved. The proposed sensor exhibits wide linear responses for Cd(II) and Pb(II), ranging from 2–70 μg L −1 and 0.5–110 μg L −1 , respectively. The detection limits are about 0.5 and 0.1 μg L −1 for Cd(II) and Pb(II), respectively, which are about 6 and 100 times lower than the drinking water standards set by the World Health Organization (WHO). Moreover, Bi/MGF-Nafion/GCE has been applied for the detection of mixed metals in real water samples. The satisfying recoveries (87.5-109.2%) and relative standard deviations (RSD, 3.7-8.6%) make the proposed electrode a promising candidate for rapid and on-site monitoring of environmental metallic pollutants.
研究领域:
环境科学
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材料科学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）