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Reza Ojani

Academic rank: Professor
ORCID:
Education: PhD.
ScopusId:
HIndex:
Faculty: Faculty of Chemistry
Address:
Phone: 011 35302350

Research

Title
MOF-derived Cu/nanoporous carbon composite and its application for electro-catalysis of hydrogen evolution reaction
Type
JournalPaper
Keywords
MOF-199; MOF-derived Cu/nanoporous carbon composite; Direct carbonization; Non-platinum catalyst; Hydrogen evolution reaction
Year
2015
Journal Energy
DOI
Researchers Jahan Bakhsh Raoof ، Sayed Reza Hosseini-zavvarmahalleh ، Reza Ojani ، Sakineh Mandegarzad

Abstract

In this work, metal-organic framework Cu3(BTC)2 [BTC = 1,3,5-benzenetricarboxylate] (commonly known as MOF-199 or HKUST-1), is used as porous template for preparation of a Cu/nanoporous carbon composite. The MOF-derived Cu/nanoporous carbon composite (Cu/NPC composite) is synthesized by direct carbonization of the MOF-199 without any carbon precursor additive. The physical characterization of the solid catalyst is achieved by using a variety of different techniques, including XRD (X-ray powder diffraction), scanning electron microscopy, thermo-gravimetric analysis, and nitrogen physisorption measurements. The electrochemical results have shown that the Cu/NPC composite modified glassy carbon electrode (Cu/NPC/GCE) as a non-platinum electrocatalyst exhibited favorable catalytic activity for hydrogen evolution reaction, in spite of high resistance to faradic process. This behavior can be attributed to existence of Cu metal confirmed by XRD and/or high effective pore surface area (1025 m2 g−1) in the Cu/NPC composite. The electron transfer coefficient and exchange current density for the Cu/NPC/GCE is calculated by Tafel plot at about 0.34 and 1.2 × 10−3 mAcm−2, respectively.