1403/01/10

رضا اوجانی

مرتبه علمی: استاد
ارکید:
تحصیلات: دکترای تخصصی
اسکاپوس:
دانشکده: دانشکده شیمی
نشانی:
تلفن: 011 35302350

مشخصات پژوهش

عنوان
Bimetallic Cu-Pt/nanoporous carbon composite as an efficient catalyst for methanol oxidation
نوع پژوهش
JournalPaper
کلیدواژه‌ها
Electrocatalysis; MOF-derived nanoporous carbons; MOF-199; Galvanic replacement reaction; Methanol electrooxidation
سال
2018
مجله Journal of the Iranian Chemical Society
شناسه DOI
پژوهشگران Sakineh Mandegarzad ، Jahan Bakhsh Raoof ، Sayed Reza Hosseini-zavvarmahalleh ، Reza Ojani

چکیده

A novel bimetallic Cu-Pt nanoparticles supported onto Cu/indirectly carbonized nanoporous carbon composite (Cu-Pt/ICNPCC) was prepared through a two-step process: first, carbonization of furfuryl alcohol-infiltrated MOF-199 (metal-organic framework Cu3(BTC)2 [BTC = 1,3,5-benzene tricarboxylate]), without removing the Cu metal with HF aqueous solution. Second, the partial galvanic replacement reaction (GRR) of Cu nanoparticles by PtIV upon immersion in a platinum(IV) chloride solution. The synthesized materials characterized by powder X-ray diffraction, Fourier transform infrared spectroscopy, field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy (EDS) and electrochemical methods. The EDS result revealed that part of Cu nanoparticles have been substituted by Pt nanoparticles after GRR. The methanol oxidation at the surface of Cu-Pt/ICNPCC was investigated by cyclic voltammetry method in 0.5 M H2SO4 and indicated good electro-catalytic activity towards methanol oxidation (Ep = 0.85 V vs. NHE and jf= 1.00 mA/cm2). It is suggested that this improvement is attributed to the effect of proper Cu/ICNPCC for fine dispersion, efficient adhesion and prevention of Pt coalescing.