Electronic Structure Optimization of PdZn-Graphitic Carbon Nitride Nanocomposites as Electrocatalysts for Selective CO₂ to CO Conversion.

ABSTRACT: Herein, a novel PdZn/g-C₃N₄ nanocomposite electrocatalyst, PdZnGCN, prepared from a facile hydrothermal reduction procedure for an efficient CO₂ to CO conversion has been examined. This composite catalyst reduces CO₂ at a thermodynamic overpotential of 0.79 V versus RHE with a 93.6% CO Faradaic efficiency and a CO partial current density of 4.4 mA cm^-2. Moreover, the turnover frequency for PdZnGCN reaches 20 974 h^-1 with an average selectivity of 95.4% for CO after 1 h and an energy efficiency approaching 59%, which is superior to most reported noble metals and metal alloys as electrocatalysts. The enhanced catalytic activity of this nanocomposite is due to synergistic interactions between PdZn and g-C₃N₄

SUBMITTER: Woyessa GW 

PROVIDER: S-EPMC9134383 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature