Related Experiment Video
Updated: Mar 1, 2026

Preparation and Use of Photocatalytically Active Segmented Ag|ZnO and Coaxial TiO2-Ag Nanowires Made by Templated Electrodeposition
Published on: May 2, 2014
Efficient all p-type heterojunction photocathodes for photoelectrochemical water splitting
1School of Materials Science and Engineering, Tianjin Chengjian University, 300384, Tianjin, China. tjulzf@163.com.
Abstract:
In this paper, Co3O4 nanostructures with different morphologies (nanoparticles (NPs), nanosheets (NSs) and nanocubes (NCs)) are directly grown on an ITO substrate using a hydrothermal method. Sb2S3 is loaded onto Co3O4 to construct a Co3O4/Sb2S3 heterojunction, which is used as an all p-type photocathode for photoelectrochemical (PEC) water splitting for the first time. The specific morphologies of Co3O4 have been discussed in detail. The improved PEC properties of the Co3O4/Sb2S3 heterojunction are characterized. Among them, the outstanding photocurrent density of the Co3O4 NC/Sb2S3 heterojunction photocathode is accessed by -1.32 mA cm-2 at -0.4 V vs. RHE. The enhanced PEC properties result from more active sites of specific crystal planes, excellent optical performance, suitable band gradient alignment and increased charge separation and charge transfer rate.
Related Concept Videos
P-N junction
The Z-Scheme of Electron Transport in Photosynthesis
Photochemical Electrocyclic Reactions: Stereochemistry
Selection Rules: Photochemical Activation

