A novel hydrogen peroxide sensor based on Ag nanoparticles decorated polyaniline/graphene composites. Issue 37 (11th June 2015)

• Record Type: Journal Article
• Authors: Li, Shan; Xiong, Jianxin; Shen, Jingsong; Qin, Yong; Li, Juan; Chu, Fuqiang; Kong, Yong; Deng, Linhong
• Is Part Of: Journal of applied polymer science. Volume 132:Issue 37(2015)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2015-06-11
• Subjects: Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.42409
• Languages: English
• ISSNs: 0021-8995

Abstract

<abstract abstract-type="main"> <title>ABSTRACT</title> <p>A novel electrochemical sensor based on Ag nanoparticles (AgNPs) decorated polyaniline/graphene composites (PANI/G) is developed, which can be used for sensitive determination of H₂O₂. For the construction of the H₂O₂ sensor, polyaniline (PANI) is first electrodeposited on the surface of graphene (G) to form PANI/G, and then horseradish peroxidase (HRP) loaded on AgNPs (HRP/AgNPs) is immobilized on to the PANI/G. H₂O₂ can be catalyzed by HRP to generate current response which can be significantly enhanced by AgNPs, and thus the PANI/G based sensor can be utilized for the detection of H₂O₂. Under the optimized conditions, the proposed H₂O₂ sensor exhibits wide linear response to H₂O₂ concentration ranging from 0.25 to 2.25 m<italic>M</italic> with a detection limit of 0.03 m<italic>M</italic> (signal‐to‐noise ratio of 3), and it also shows high selectivity and reproducibility. The method is simple and cost‐effective, and can be a promising candidate as the sensitive sensing platform for H₂O₂. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. <bold>2015</bold>, <italic>132</italic>, 42409.</p> </abstract>