Comparative Characterization of Cupric Oxide Thin Film and Nanorod Photocathodes for Photoelectrochemical Water Splitting

Jong-Hyun Park; Hyojin Kim

doi:10.3740/MRSK.2024.34.12.602

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2024 Vol.34, Issue 12 Preview Page Next Page

Research Paper

Comparative Characterization of Cupric Oxide Thin Film and Nanorod Photocathodes for Photoelectrochemical Water Splitting

27 December 2024. pp. 602-608

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Abstract

Hydrogen production via photoelectrochemical water splitting relies on the effectiveness of the photoelectrodes. Preparing low-dimensional structures of oxide semiconductors is a promising approach to fabricating effective photoelectrodes, by enhancing the surface-to-volume ratios of the photocatalytic materials. In this study, we performed a comparative investigation of the photoelectrochemical characteristics of p-type oxide semiconductor cupric oxide (CuO) photocathodes based on CuO thin film and nanorods. The CuO thin film was prepared via a facile method involving sputtering a Cu metallic film and subsequent thermal oxidation, while the CuO nanorods were grown via a seed-mediated hydrothermal synthesis method using a CuO nanoparticle seed layer. The structural, optical, and photoelectrochemical properties of the prepared CuO thin film and nanorods were comparatively examined. Our results confirmed that the CuO nanorod photocathode has a higher photocurrent density and better photoconversion efficiency than the CuO thin film photocathode for photoelectrochemical water splitting, implying a promising route to the fabrication of CuO-based photoelectrodes.

Keywords

oxide semiconductor

cupric oxide

photocathode

photoelectrochemical water splitting

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Information

Publisher :Materials Research Society of Korea
Publisher(Ko) :한국재료학회
Journal Title :Korean Journal of Materials Research
Journal Title(Ko) :한국재료학회지
Volume : 34
No :12
Pages :602-608
Received Date : 2024-11-19
Revised Date : 2024-12-11
Accepted Date : 2024-12-11
DOI :https://doi.org/10.3740/MRSK.2024.34.12.602

Korean Journal of Materials Research ISSN:1225-0562(Print) 2287-7258(Online) 한국재료학회지

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