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Dive into the research topics where Zifei Wang is active.

Publication


Featured researches published by Zifei Wang.


Analytica Chimica Acta | 2014

Electrochemical recognition and trace-level detection of bactericide carbendazim using carboxylic group functionalized poly(3,4- ethylenedioxythiophene) mimic electrode

Yuanyuan Yao; Yangping Wen; Long Zhang; Zifei Wang; Hui Zhang; Jingkun Xu

The electrochemical recognition and trace-level detection of bactericide carbendazim (MBC) in paddy water and commercial juice were realized using carboxylic group functionalized poly(3,4-ethylenedioxythiophene) (PC4-EDOT-COOH) film electrode. PC4-EDOT-COOH film was prepared by one step, low-cost, and green electrosynthesis in aqueous microemulsion system and characterized by FT-IR, cyclic voltammetry, UV-vis and SEM. In comparison with poly(3,4-ethylenedioxythiophene) (PEDOT) and poly(hydroxymethylated-3,4-ethylenedioxylthiophene) (PEDTM), PC4-EDOT-COOH exhibited the best electrochemical recognition towards MBC and the recognition mechanism was proved by quantitative calculation. Sensing parameters such as pH values, accumulation potential, accumulation time, supporting electrolyte, and scan rate on the current response of MBC were discussed. In addition, the sensor can be applied to quantification of MBC in the concentration range of 0.012-0.35 μM with a low detection limit of 3.5 nM (S/N=3). Moreover, PC4-EDOT-COOH film electrode showed good stability, high selectivity, and satisfactory anti-interference ability. Satisfactory results indicated that PC4-EDOT-COOH film is a promising sensing platform for the trace-level analysis of bactericide residue carbendazim in agricultural crops and environment.


Food Chemistry | 2015

Trace analysis of Ponceau 4R in soft drinks using differential pulse stripping voltammetry at SWCNTs composite electrodes based on PEDOT:PSS derivatives.

Zifei Wang; Hui Zhang; Zhipeng Wang; Xuemin Duan; Jingkun Xu; Yangping Wen

Ponceau 4R, an edible synthetic colorant used in drinks, syrups, and sweets, has been successfully detected using differential pulse voltammetry at a single-walled carbon nanotubes-modified composite electrode based on poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) and two derivatives thereof. The electrochemical parameters of three Ponceau 4R sensors, such as pH value, pre-concentration time, and scan rate, have been optimized, and their electrochemical performances have been compared. A poly(acrylate-modified 3,4-ethylenedioxythiophene-co-3,4-ethylenedioxythiophene):poly(styrene sulfonate)-single-walled carbon nanotubes-poly(vinyl alcohol)-modified electrode showed the best electrocatalytic activity, with the highest response current, lowest detection limit (1.8 nm), widest linear range (0.0055-110.6 μm), and best sensing stability. Additionally, the modified electrode has also been successfully employed for real sample analysis with soft drinks. Satisfactory results were obtained, demonstrating this to be an easy and effective approach for trace analysis of Ponceau 4R in food samples.


RSC Advances | 2015

Electrochemical sensing application of poly(acrylic acid modified EDOT- co -EDOT):PSS and its inorganic nanocomposite with high soaking stability, adhesion ability and flexibility

Zifei Wang; Zhipeng Wang; Hui Zhang; Xuemin Duan; Jingkun Xu; Yangping Wen

A novel and simple strategy to prevent swelling, disintegration, cracking and peeling-off of poly(3,4-ethylenedioxythiophene):poly(styrene-sulfonate) (PEDOT:PSS) film in water was developed. This strategy was based on the film of a conducting polymer, poly(acrylic acid modified EDOT-co-EDOT):PSS (poly(EDOT-co-EDOT-AA):PSS). The film had high soaking stability, good adhesive ability, and high flexibility, which are crucial to maintaining long-term electrode stability in water of the PEDOT:PSS film. The most widely studied novel carbon nanomaterial, graphene, and a unique and versatile clay nanomaterial, halloysite, were introduced into poly(EDOT-co-EDOT-AA):PSS aqueous dispersion to prepare organic polymer–inorganic nanocomposites. Use of poly(EDOT-co-EDOT-AA):PSS film and its composite films as electrode coatings enabled long-term high performance of the film electrodes and provided high electrode stability and high adhesive ability. The structure, optical, flexibility, conductivity properties and morphology of poly(EDOT-co-EDOT-AA):PSS and its composites were systematically investigated. The performance of poly(EDOT-co-EDOT-AA):PSS film and its composite films, and their electrodes in sensing applications was also evaluated. The as-prepared electrochemical electrodes displayed high electrocatalytic activity in the detection of epinephrine, tryptophan, maleic hydrazide, and vitamin B6, as well as high sensing stability. The results indicated that poly(EDOT-co-EDOT-AA):PSS and its composites had potential applications for various electrode coatings.


RSC Advances | 2015

Nickel clusters grown on three-dimensional graphene oxide–multi-wall carbon nanotubes as an electrochemical sensing platform for luteolin at the picomolar level

Taotao Yang; Yansha Gao; Jingkun Xu; Limin Lu; Yuanyuan Yao; Zifei Wang; Xiaofei Zhu; Huakun Xing

This study focuses on enhancing the catalytic activity of metallic Ni by using various nanostructured carbon materials, including 1D multi-wall carbon nanotubes (MWCNTs), 2D graphene oxide (GO) and graphene (GR), and 3D graphene oxide–multi-wall carbon nanotubes (GO–MWCNTs) as supporting matrices for the fabrication of an electrochemical sensor for detecting the flavonoid luteolin. Ni clusters were prepared by a facile electrochemical approach and the metallic Ni on various carbon supports exhibited different morphologies, which were characterized by scanning electron microscopy (SEM) and Raman spectra. The electrocatalytic performance of Ni-based materials towards luteolin oxidation was studied by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). It was found that Ni clusters supported on GO–MWCNTs (Ni/GO–MWCNTs) were profoundly superior to other carbon materials, with a greatly enhanced current. This is attributed not only to the excellent electric conductivity and large surface-to-volume ratio of Ni/GO–MWCNTs, but also to the unique 3D carbon nanostructure that facilitates the easy access of the electrolyte and analyte to the modified electrode surface and promotes the reaction kinetics. Under the optimal conditions, the anodic peak current was linear to the concentration of luteolin in the range from 1 pM to 15 μM with a detection limit of 0.34 pM (S/N = 3). The good analytical performance, low cost and straightforward preparation method made this novel electrode material promising for the development of an effective luteolin sensor.


Sensors and Actuators B-chemical | 2014

Facile preparation of highly water-stable and flexible PEDOT:PSS organic/inorganic composite materials and their application in electrochemical sensors

Zifei Wang; Jingkun Xu; Yuanyuan Yao; Long Zhang; Yangping Wen; Haijun Song; Danhua Zhu


Chinese Chemical Letters | 2014

Electrochemical sensor based on f-SWCNT and carboxylic group functionalized PEDOT for the sensitive determination of bisphenol A

Long Zhang; Yangping Wen; Yuanyuan Yao; Zifei Wang; Xuemin Duan; Jingkun Xu


Synthetic Metals | 2015

Conducting poly(3,4-ethylenedioxythiophene):poly(styrene- sulfonate) film electrode with superior long-term electrode stability in water and synergistically enhanced electrocatalytic ability for application in electrochemical sensors

Hui Zhang; Jingkun Xu; Yangping Wen; Zifei Wang; Wanchuan Ding


Chinese Chemical Letters | 2014

Electrochemical determination of quercetin by self-assembled platinum nanoparticles/poly(hydroxymethylated-3,4- ethylenedioxylthiophene) nanocomposite modified glassy carbon electrode

Yuanyuan Yao; Long Zhang; Zifei Wang; Jingkun Xu; Yangping Wen


Chinese Chemical Letters | 2014

One-step co-electrodeposition of graphene oxide doped poly(hydroxymethylated-3,4-ethylenedioxythiophene) film and its electrochemical studies of indole-3-acetic acid

Zi-Lan Feng; Yuanyuan Yao; Jingkun Xu; Long Zhang; Zifei Wang; Yangping Wen


Journal of Electroanalytical Chemistry | 2015

Voltammetric determination of phytoinhibitor maleic hydrazide using PEDOT:PSS composite electrode

Jie Zhang; Jingkun Xu; Yangping Wen; Zifei Wang; Hui Zhang; Wanchuan Ding

Collaboration


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Jingkun Xu

Jiangxi Science and Technology Normal University

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Yangping Wen

Jiangxi Agricultural University

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Yuanyuan Yao

Jiangxi Science and Technology Normal University

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Long Zhang

Jiangxi Science and Technology Normal University

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Hui Zhang

Jiangxi Science and Technology Normal University

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Xuemin Duan

Jiangxi Science and Technology Normal University

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Wanchuan Ding

Jiangxi Science and Technology Normal University

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Zhipeng Wang

Jiangxi Science and Technology Normal University

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Danhua Zhu

Jiangxi Science and Technology Normal University

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Dufen Hu

Jiangxi Science and Technology Normal University

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