Improving the CO2 electrochemical reduction to formic acid using iridium-oxide-modified boron-doped diamond electrodes

被引：31

作者：

Jiwanti, Prastika K. ^{[1
]}

Ichzan, Andi M. ^{[2
]}

Dewandaru, Respati K. P. ^{[2
]}

Atriardi, Shafrizal R. ^{[2
]}

Einaga, Yasuaki ^{[3
]}

Ivandini, Tribidasari A. ^{[2
]}

机构：

[1] Airlangga Univ, Fac Sci & Technol, Kampus C Mulyorejo, Surabaya 60115, Indonesia

[2] Univ Indonesia, Fac Math & Sci, Dept Chem, Kampus UI Depok, Jakarta 16424, Indonesia

[3] Keio Univ, Fac Sci & Technol, Dept Chem, 3-14-1 Hiyoshi, Yokohama, Kanagawa 2238522, Japan

来源：

关键词：

Boron-doped diamond; Iridium oxide; Formate; CO2 electrochemical reduction; CARBON-DIOXIDE; CU; DEPOSITION; CATALYST; FORMATE;

D O I：

10.1016/j.diamond.2020.107874

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Modification of iridium on the surface of boron-doped diamond (BDD) electrode has been performed to decrease the overpotential reduction of carbon dioxide (CO2) and produce value-added carbon compounds. The modification was performed using the cyclic voltammetry (CV) technique that successfully deposited iridium oxide on the surface of the BDD electrode with an Ir-to-C ratio of approximately 1:100. When the modified BDD electrode was utilized for CV of a dissolved-CO2-saturated solution, hydrogen evolution occurred at a potential of approximately - 1.2 V (vs. Ag/AgCl), which was lower than that when an unmodified BDD was used. Furthermore, when this electrode was utilized for amperometry of the same solution at - 1.7 V for 1 h, formic acid (HCOOH) was produced with a Faradaic efficiency of approximately 50%. Results indicated that the modified electrode has considerable potential for application to CO2 electrochemical reduction.

引用

页数：6

共 36 条

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