Enhanced Performance of Porphyrin-Modified CuO-Co3O4 Heterojunction as a Photoelectrocatalyst for Methanol Oxidation

Shu Li; Zhenchao Liu; Ying Chu; Xiaohan Li; Qijing Bu; Qingyun Liu

doi:10.1021/acs.langmuir.3c00971

Enhanced Performance of Porphyrin-Modified CuO-Co₃O₄ Heterojunction as a Photoelectrocatalyst for Methanol Oxidation

Langmuir. 2023 Aug 8;39(31):10863-10871. doi: 10.1021/acs.langmuir.3c00971. Epub 2023 Jul 25.

Authors

Shu Li¹, Zhenchao Liu¹, Ying Chu¹, Xiaohan Li², Qijing Bu¹, Qingyun Liu¹

Affiliations

¹ College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
² School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.

PMID: 37491702
DOI: 10.1021/acs.langmuir.3c00971

Abstract

It is desirable to improve the methanol oxidation ability of heterojunction catalysts because of their potential in the field of electrocatalysis. In this article, we have integrated CuO/Co₃O₄ heterojunction with porphyrin (TCPP) for TCPP/Cu₂Co₁. The results demonstrate that the specific surface area and electrochemical active surface area (ECSA) are enhanced, and the unblocked separation and transfer of photogenerated charges are guaranteed by the matched band energy of CuO, Co₃O₄, and TCPP. As such, the photocatalytic methanol oxidation reaction (MOR) performance and stability of TCPP/Cu₂Co₁ are significantly enhanced compared with those of Cu₂Co₁. This study provides a promising pathway for the design of MOR catalysts with high MOR activity.