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https://www.ias.ac.in/article/fulltext/boms/038/03/0611-0616

Nanocomposite; graphene; dissolved oxygen; sensor.

This paper proposed a simple, efficient and sensitive electrochemical sensor for dissolved oxygen (DO) detection based on a galvanic displacement synthesized reduced graphene oxide–silver nanoparticles (RGO/Ag) composite modified grassy carbon electrode (GCE). The synthesized RGO/Ag nanocomposite was characterized by UV–vis spectroscopy, Raman spectroscopy, scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results indicate the graphene oxide (GO) has been successfully reduced during the galvanic displacement process and the average size of Ag nanoparticle is 52 nm. The RGO/Ag nanocomposite-modified GCE showed a significant enhancement of DO detection compared with bare and RGO-modified GCEs. Moreover, the proposed DO sensor also exhibited an excellent repeatability, reproducibility and anti-interference ability

Li Fu^{1 2} Yuhong Zheng¹ Zhuxian Fu² Aiwu Wang³ Wen Cai³

1. Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing Botanical Garden, Mem. Sun Yat-Sen, Nanjing 210014, PR China
2. Golden Yuanta Construction Engineering Co., Ltd., Zhejiang 311200, PR China
3. Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Hong Kong

Published

June 2015

Manuscript received

12 August 2014

Manuscript revised

6 November 2014