Deyin Guo

South China University of Technology

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Jianshan Ye

South China University of Technology

Dan Li

Shanghai Jiao Tong University

Ping Yu

Chinese Academy of Sciences

Lanqun Mao

Beijing Normal University

Shunlong Yang

China National Nuclear Corporation

Ruixin Li

Sun Yat-sen University

Meining Zhang

Renmin University of China

Dan Zheng

Hubei Academy of Agricultural Sciences

Guangquan Mo

Guangzhou Medical University

Lei Su

East China Normal University

Cooperative Institutions

Chinese Academy of Sciences

University of Chinese Academy of Sciences

Beijing National Laboratory for Molecular Sciences

South China University of Technology

Harbin Institute of Technology

Shenzhen University

Institute of Chemistry

Shanghai Jiao Tong University

Xi'an Jiaotong University

Shanghai Advanced Research Institute

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Comparative studies on electrochemical activity of graphene nanosheets and carbon nanotubes

Electrochemistry Communications (2009)

Jingfang Wang Shunlong Yang Deyin Guo Ping Yu Dan Li

Carbon fibers

Glassy carbon

10.1016/j.elecom.2009.08.019

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Citations (146)

Adsorptive Stripping Voltammetric Detection of Tea Polyphenols at Multiwalled Carbon Nanotubes‐Chitosan Composite Electrode

Electroanalysis (2009)

Deyin Guo Dan Zheng Guangquan Mo Jianshan Ye

Abstract This study reports the catalytic oxidation and detection of tea polyphenols (TPs) at glassy‐carbon electrode modified with multiwalled carbon nanotubes‐chitosan (MWCNTs‐CS) film. The adsorption of TPs at the surface of the MWCNTs through π–π conjugation prevents the aggregation of nanotubes and induces a stable MWCNTs suspension in water over 30 days. Based on the adsorptive accumulation of polyphenols at MWCNTs, TPs is sensitively and selectively detected by adsorptive stripping voltammetry. The accumulation conditions and pH effect on the adsorptive stripping detection were examined. The linear range was found to be 100 to 1000 mg L −1 with a detection limit of 10 mg L −1 ( S / N =3) for 2.5 min accumulation. Additionally, the MWCNTs‐CS electrode is easily renewed by applying positive potential to remove the adsorbed TPs. This method was successfully applied to determine TPs in commercially available teas with satisfied result compared with that of conventional spectrometric analysis.

Stripping (fiber)

Adsorptive stripping voltammetry

Linear range

10.1002/elan.200804475

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Citations (49)

A facile method for preparation of graphene film electrodes with tailor-made dimensions with Vaseline as the insulating binder

Electrochemistry Communications (2009)

Shunlong Yang Deyin Guo Lei Su Ping Yu Dan Li

Vaseline

10.1016/j.elecom.2009.08.020

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