Electrochemical study of Sudan Ⅰ at ionic liquid-reduced graphene oxide modified electrode
Ionic liquid-reduced graphene oxide modified electrode (IL-rGO/GCE) was fabricated using a simple and green method,and it exhibited good electrochemical response on Sudan Ⅰ.The electrochemical behavior of Sudan Ⅰ was studied sufficiently,and two electrons and two protons are involved in the electrochemical process of Sudan Ⅰ at IL-rGO/GCE.Some dynamic parameters such as the diffusion coefficient (D) and adsorption capacity (Г*) were calculated as D=1.43 × 10-6 cm2/s,Г*=1.97×10-10 mol/cm2 by chronocoulometries.Meanwhile,supported by cyclic voltammetry experiments,the possible electrochemical reaction mechanism of Sudan Ⅰ was proposed,which is E1CE2 process.Finally,the effect of initial potential and the scanning direction on the electrochemical reaction of Sudan Ⅰ confirmed further the proposed electrochemical reaction mechanism.This study probably offers the possibility for preparation an excellent Sudan Ⅰ sensor.
Sudan Ⅰ Ionic liquid Reduced graphene oxide Electrochemical reaction mechanism
Lin Li Yanjun Zhang Tianyi Shang Huixia Guo Xiuhui Liu Xiaoquan Lu
Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province,College of Chemistry & Chemical Engineering,Northwest Normal University,Lanzhou 730070,China
国际会议
南京
英文
218-222
2016-12-23（万方平台首次上网日期，不代表论文的发表时间）