A Novel Combustion Method to Fabricate of Porous NiO: Application as Catalyst Support to Immobilize Palladium Nanoparticles for Methanol Electrooxidation

Publish Year: 1397
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:

IICC20_111

تاریخ نمایه سازی: 2 تیر 1398

Abstract:

A significant percentage of researches on fuel cells are focused on the presentation of electrocatalysts for the oxidation of alcohols [1]. Due to different properties of metal oxides such as: low thermal conductivity, great thermal stability and high resistance to chemical degradation [2]; they can be a convenient support for catalytic particles. In the present study, the solution combustion synthesis method (SCS) was utilized to fabricate NiO with high surface area and large porosity using glycine as a fuel. A self-sustained exothermic reaction among organic fuels (e.g., glycine) and oxidizers (e.g., metal nitrates) is occurred in SCS; so that, the combustion of organic fuels produced a much amount of gaseous products like H2O, CO2 H2, CO, and N2, leading to porous structures. In the following, the crystalline phases of as-prepared NiO were identified by X-ray diffractometer. Also, the morphology and particles size of the powder were detected through the scanning electron microscope. Then, the palladium nanoparticles were reduced onto the surface and into pores of NiO powder. The electro-catalytic activity of resultant nanocomposite was investigated towards the oxidation of methanol in alkaline solution by using electrochemical techniques.

Authors

Salehe Gomroki

Department of Chemistry, University of Sistan and Baluchestan, Zahedan, P.O. Box ۹۸۱۳۵-۶۷۴, Iran

Zahra Yavari

Department of Chemistry, University of Sistan and Baluchestan, Zahedan, P.O. Box ۹۸۱۳۵-۶۷۴, Iran

Ahmadreza Abbasian

Department of Materials Engineering, Faculty of Engineering, University of Sistan and Baluchestan, Zahedan, Iran

Meissam Noroozifar

Department of Chemistry, University of Sistan and Baluchestan, Zahedan, P.O. Box ۹۸۱۳۵-۶۷۴, Iran