• 文献标题:   Fabrication of sensitive non-enzymatic nitrite sensor using silver-reduced graphene oxide nanocomposite
  • 文献类型:   Article
  • 作  者:   AHMAD R, MAHMOUD T, AHN MS, YOO JY, HAHN YB
  • 作者关键词:   reduced graphene oxide, silver nanoparticle, nanocomposite, nonenzymatic, sensitive, nitrite sensor
  • 出版物名称:   JOURNAL OF COLLOID INTERFACE SCIENCE
  • ISSN:   0021-9797 EI 1095-7103
  • 通讯作者地址:   Chonbuk Natl Univ
  • 被引频次:   10
  • DOI:   10.1016/j.jcis.2018.01.052
  • 出版年:   2018

▎ 摘  要

There are increasing demands of more sensitive sensors for monitoring potential hazards in real water that may cause serious problems to human health. Herein, we report the development of a non-enzymatic nitrite sensor using nanocomposite of reduced graphene oxide decorated with silver nanoparticle (Ag-rGO). First, Ag-rGO nanocomposite was synthesized using a facile and cost-effective microwave-assisted approach. Then, as-synthesized Ag-rGO nanocomposite was used to modify glassy carbon electrode (GCE) and applied for the sensitive and selective detection of nitrite in the aqueous medium with increasing concentration of nitrite. Under optimized conditions, sensor achieved high sensitive response (18.4 mu A/mu M.cm(2)) in a wide linear range (0.1-120 mu M), low limit of detection (similar to 0.012 mu M), and good selectivity using differential pulse voltammograms (DPV). The applicability of fabricated non enzymatic nitrite sensor was checked in real sample with satisfactory results. (C) 2018 Elsevier Inc. All rights reserved.