1403/01/10
سید رضا حسینی زوارمحله

سید رضا حسینی زوارمحله

مرتبه علمی: دانشیار
ارکید:
تحصیلات: دکترای تخصصی
اسکاپوس:
دانشکده: دانشکده شیمی
نشانی:
تلفن: 01135302361

مشخصات پژوهش

عنوان
An Electrochemical Investigation of Methanol Oxidation on Nickel Hydroxide Nanoparticles
نوع پژوهش
JournalPaper
کلیدواژه‌ها
Cyclic voltammetry, electrooxidation, glassy carbon electrode, methanol, nickel hydroxide nanoparticles
سال
2013
مجله SOUTH AFRICAN JOURNAL OF CHEMISTRY-SUID-AFRIKAANSE TYDSKRIF VIR CHEMIE
شناسه DOI
پژوهشگران Jahan Bakhsh Raoof ، Reza Ojani ، Sayed Reza Hosseini-zavvarmahalleh

چکیده

In this work, a nickel-modified glassy carbon electrode (GCE) was prepared using a potentiostatic method in 0.1Macetate buffer solution at pH 4.0 containing 1.0 mM nickel nitrate. Nickel hydroxide nanoparticles were prepared using consecutive potential scanning in 0.1 M NaOH solution. The as-prepared catalyst was characterized by field emission scanning electron microscopy and electrochemical methods. Electrochemical characterization exhibited stable redox behaviour of the Ni(III)/Ni(II) couple. Cyclic voltammetric experiments showed that electrocatalytic oxidation of methanol can occur at the modified electrode, whereas it is not observed at a bare GCE. The effect of potential sweep rates and methanol concentration on its electrochemical behaviour was studied. The rate constant (k) for the chemical reaction between methanol and catalytic centres has been evaluated by chronoamperometry. In addition, long-term stability of the modified electrode was investigated by electrochemical methods.