Nashrieh Shimi va Mohandesi Shimi Iran

Nashrieh Shimi va Mohandesi Shimi Iran

Copper and Cobalt-Based Bimetallic-Porous Coordination Polymers as an Efficient Electrocatalyst for Urea Oxidation

Document Type : Research Article

Authors
Reza Abazari 1
Jafar Shariati 2
1 Department of Chemistry, Faculty of Basic Sciences, Maragheh University, Maragheh, I.R. IRAN
2 Department of Chemical Engineering, Darab Branch, Islamic Azad University, Darab, I.R. IRAN
Abstract
In the current study, Cu-PCP, Co-PCP, and bimetallic CuCo-PCPs were synthesized through a single-step hydrothermal method utilizing 4,4-oxybis(benzoic acid) and N,N-bis-(4-pyridylformamide)-1,4-benzenediamine linkers. Excellent electrocatalytic activity toward the urea oxidation reaction was reported for the synthesized bimetallic CuCo-PCPs, achieving a high current density of 10 mA/cm2 at a potential of 1.495 V, a Tafel slope of 128 mV /dec, and a significant turnover frequency (TOF) of 0.068 s−1. Urea electrolysis achieved a current density of 10 mA/cm² at a low cell voltage of 1.53 V, approximately 200 mV lower than that required for conventional water electrolysis, while maintaining stability over 48 hours at 50 mA/cm² with no noticeable performance decline.  The 3D structures of bimetallic CuCo-PCPs can illustrate their exceptional catalytic performance, which is attributed to abundant accessible molecular active sites and efficient mass transport arising from their unique architecture. The synergistic interaction between Cu and Co within the PCP configuration facilitates faster electron transport, giving the newly developed bimetallic CuCo-PCPs more potential for water electrolysis and advanced energy storage applications.
Keywords
Electrocatalyst
Bimetallic&‌‌ndash؛ porous coordination polymer
Urea oxidation
Hydrogen production.

Subjects

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