标题:A glassy carbon electrode modified with gold nanoparticle-encapsulated graphene oxide hollow microspheres for voltammetric sensing of nitrite
作者:Zhang, Fuhua; Yuan, Yawen; Zheng, Yiqun; Wang, Hua; Liu, Tonghao; Hou, Shifeng
作者机构:[Zhang, Fuhua; Yuan, Yawen] Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Shandong, Peoples R China.; [Zhang, Fuhua; Yuan, Yawen; Zheng, Yiqun; 更多
通讯作者:Hou, SF;Hou, SF
通讯作者地址:[Hou, SF]Shandong Univ, Natl Engn Res Ctr Colloidal Mat, Jinan 250100, Shandong, Peoples R China;[Hou, SF]Jining Res Ctr Carbon Nanomat, Jining 272100 更多
来源:MICROCHIMICA ACTA
出版年:2017
卷:184
期:6
页码:1565-1572
DOI:10.1007/s00604-017-2264-6
关键词:Composite materials; AuNPs; Cyclic voltammetry; Spray drying;; Electrocatalysis
摘要:Reduced graphene oxide hollow microspheres (rGO HMS) were encapsulated with gold nanoparticles (AuNPs) by spray drying. Scanning electron microscopy, transmission electron microscopy, X-ray diffraction and Raman spectroscopy were used to characterize the AuNP/rGO HMS. When placed on a glassy carbon electrode (GCE), it exhibits excellent electrochemical catalytic properties towards the oxidation of nitrite. The electrocatalytic properties were studied using various electrochemical techniques. Compared to AuNP-decorated graphene sheet based electrodes documented in the literature, the one presented here provides a larger surface area. This enhances the catalytic activity towards nitrite. The electrode, typically operated at a working potential of 0.82 V (vs. SCE), has a linear response in the 5.0 mu M to 2.6 mM nitrate concentration range, and a detection limit as low as 0.5 mu M (at an S/N ratio of 3).
收录类别:SCOPUS;SCIE
WOS核心被引频次:4
Scopus被引频次:6
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85017502369&doi=10.1007%2fs00604-017-2264-6&partnerID=40&md5=15200d1d4b146901da54f65638089b3f
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