• 文献标题:   Amplified electrochemical sensor employing Ag NPs functionalized graphene paper electrode for high sensitive analysis of Sudan I
  • 文献类型:   Article
  • 作  者:   MENG FX, QIN YA, ZHANG WR, CHEN F, ZHENG L, XING J, AIHAITI A, ZHANG MW
  • 作者关键词:   ag np, graphene, sudan i, paper electrode, electrochemical sensor
  • 出版物名称:   FOOD CHEMISTRY
  • ISSN:   0308-8146 EI 1873-7072
  • 通讯作者地址:  
  • 被引频次:   13
  • DOI:   10.1016/j.foodchem.2021.131204 EA SEP 2021
  • 出版年:   2022

▎ 摘  要

In this study, a high-performance flexible reduced graphene oxide (rGO) paper electrode composed of silver nanoparticles (Ag NPs) for the detection of Sudan I was fabricated. Ag NPs were doped with rGO nanoheets by self-assemble and assembled into a paper electrode with layer-by-layer structure via vacuum filtration. Thanks to the highly efficient electrocatalysis of Ag NPs towards reduction of azo bond, the as-prepared hybrid paper can be used alone as a flexible sensor for the detection of Sudan I in chili powder, with the high sensitivity (22.93 mu A mu mol/L) and the low detection limit (41.3 nmol/L). The sensor also expressed good selectivity, repeatability, reproducibility, stability and recovery between 96.1% and 101.8% (RSD < 6%). With the advantages of low-cost and scalable production capacity, such Ag NPs/rGO functional papers can be used as flexible disposable sensors for electrochemical detection of Sudan I.