Electrochemical Detection of Hydrazine and 4-Nitrophenol Based on Layer-by-Layer Assembled Multilayer Films of Reduced Graphene Oxide/Gold Nanoparticles

Sensors & Transducers

Yueshan ZHOU¹  Yan GAO²  Huijun JIANG²  Shuohan HUANG²  Lei XU² 

[1] Nanjing Jinling Secondary Vocational School, Nanjing 210014, PR China;School of Pharmacy, Nanjing Medical University, No.140, Hanzhong Road, Nanjing 210029, PR China ;

关键词: Reduced graphene oxide;    Layer-by-layer;    Gold nanoparticle;    Hydrazine;    4-Nitrophenol.;   

DOI  :  

来源: DOAJ

【 摘 要 】

Based on poly sodium 4-styrenesulfonate (PSS) functionalized reduced graphene oxide (RGO) and polyamidoamine (PAMAM) dendrimer protected gold nanoparticles (AuNPs), a novel electrochemical sensing platform for sensitive detection of 4-nitrophenol and hydrazine was fabricated via electrostatic layer-by-layer (LBL) self-assembly on a gold electrode modified with a first layer of poly (diallyldimethylammonium chloride) (PDDA). The resulting nanocomposites were characterized by Raman and UV-Vis spectroscopes. Besides, electrochemical measurements were employed to investigate the electrocatalytic and sensing properties of the as-prepared modified electrode. The results indicate that the LBL assembled PSS-RGO/PAMAM-AuNPs multilayer films possess excellent electrocatalytic activities towards the reduction of 4-nitrophenol (4-NP) and the oxidation of hydrazine and also show good analytical performance for the amperometric detection of the potential poisonous substances. In addition, the combination of the reduced graphene oxide and gold nanoparticles in the LBL assembly films and their synergistic effect may account for the increased electrochemical activities.

【 授权许可】

Unknown