Dissolved oxygen detection by galvanic displacement-induced graphene/silver nanocomposite

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• 作者：LI FU ; YUHONG ZHENG ; ZHUXIAN FU ; AIWU WANG ; WEN CAI
• 关键词：Nanocomposite ; graphene ; dissolved oxygen ; sensor.
• 刊名：Bulletin of Materials Science
• 出版年：2015
• 出版时间：June 2015
• 年：2015
• 卷：38
• 期：3
• 页码：611-616
• 全文大小：1,224 KB
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• 作者单位：LI FU (1) (2)
  YUHONG ZHENG (1)
  ZHUXIAN FU (2)
  AIWU WANG (3)
  WEN CAI (3)
  
  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
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Materials Science
  Engineering, general
  
• 出版者：Springer India
• ISSN：0973-7669

文摘

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.