• 文献标题:   Investigation of Methanol Behavior at the Designed Electrochemical Sensor based on Ni(II) Complex and Graphene Nanosheets
  • 文献类型:   Article
  • 作  者:   BENVIDI A, TEZERJANI MD, FIROUZABADI AD, REZAEINASAB M, ARDAKANI MM, KIANFAR AH, SEDIGHIPOOR M
  • 作者关键词:   methanol, ni ii complex, electroxidation, reduced graphene oxide rgo, carbon paste electrode
  • 出版物名称:   JOURNAL OF THE CHINESE CHEMICAL SOCIETY
  • ISSN:   0009-4536 EI 2192-6549
  • 通讯作者地址:   Yazd Univ
  • 被引频次:   1
  • DOI:   10.1002/jccs.201700284
  • 出版年:   2018

▎ 摘  要

In this work, the electrochemical oxidation of methanol was investigated by different electrochemical methods at a carbon paste electrode (CPE) modified with (N-5-methoxysalicylaldehyde, N '-2-hydroxyacetophenon-1, 2 phenylenediimino nickel(II) complex (Ni(II)-MHP) and reduced graphene oxide (RGO), which is named Ni(II)-MHP/RGO/CPE, in an alkaline solution. This modified electrode was found to be efficient for the oxidation of methanol. It was found that methanol was oxidized by the NiOOH groups generated by further electrochemical oxidation of nickel(II) hydroxide on the surface of the modified electrode. Under optimum conditions, some parameters of the analyte (MeOH), such as the electron transfer coefficient (), the electron transfer rate constant) k(s)), and the diffusion coefficient of species in a 0.1 M solution (pH=13), were determined. The designed sensor showed a linear dynamic range of 2.0-100.0 and 100.0-1000.0 M and a detection limit of 0.68M for MeOH determination. The Ni(II)-MHP/RGO/CPE sensor was used in the determination of MeOH in a real sample.