• 文献标题:   One-pot aqueous method for facile synthesis of platinum-copper bimetallic catalyst based on graphene oxide and its highly enhanced sensing of nitrite
  • 文献类型:   Article
  • 作  者:   LI YS, ZHANG XJ, ZHENG JB
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF MATERIALS SCIENCEMATERIALS IN ELECTRONICS
  • ISSN:   0957-4522 EI 1573-482X
  • 通讯作者地址:   Northwest Univ
  • 被引频次:   0
  • DOI:   10.1007/s10854-020-03883-w EA JUL 2020
  • 出版年:   2020

▎ 摘  要

A bimetallic catalyst consisting of platinum-copper (Pt-CuNCs) anchored on graphene oxide (Pt-Cu/GO) was successfully synthesized by a one-pot aqueous method to detect sodium nitrite(NaNO2). The alloy was reduced and grown directly on the surface of graphene oxide(GO), which can maximize the interaction between metals and GO to achieve the enhanced catalytic activity. The transmission electron microscopy (TEM) results showed Pt-CuNCs were of spherical shape with an edge length of 5 +/- 2 nm. Cyclicvoltammetry and chronoamperometry were used to test the electrochemical behavior of these nanocomposites and the results showed that Pt-Cu/GO nanocomposites have an excellent catalytic effect for nitrite analysis with a wide linear range of 2.0 x 10(-7)to 9 x 10(-3) mol L-1, low detection limit 3 mu mol L-1(SNR = 3), and high sensitivity (139.9 mu A center dot mM(-1) cm(-2)). Furthermore, the sensor exhibited good stability, selectivity, and reproducibility.