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Karim Kakaei

Karim Kakaei

Academic rank: Professor
ORCID:
Education: PhD.
ScopusId:
HIndex:
Faculty: 1
Address:
Phone: 37220475

Research

Title
High efficiency platinum nanoparticles based on carbon quantum dot and its application for oxygen reduction reaction
Type
JournalPaper
Keywords
Carbon quantum dot Electro synthesis Platinum nanoparticles Oxygen reduction reaction
Year
2017
Journal International Journal of Hydrogen Energy
DOI
Researchers Karim Kakaei

Abstract

Carbon quantum dots (CQDs) are synthesized by one pot electrochemical method using small molecule and applied as the support materials for platinum (Pt) catalysts. The effect of CQD on the catalytic activity and stability of the supported Pt catalysts for oxygen reduction reaction is investigated for the first time. The as-prepared Pt/CQD nanocomposites has been carefully characterized by spectroscopic and electrochemical techniques. X-ray diffractometer and tunneling electron microscopy techniques are employed to study the crystallite size. X-ray photoelectron spectroscopy revealed that Pt deposited to CQD. The electrochemical behavior, characterized by oxygen reduction reaction onset potentials, electrochemical active surface area, cyclic voltammetry stability (1000 cycles) and charge transfer resistance is attributed to the strong interaction between the nanosize platinum particles and the CQDs composite, which induces modulation in the electronic structure of the platinum clusters.