DataVXACS Applied Energy MaterialsPaper
journal article·2023-01-23

CeO2/TiO2 Heterojunction Nanotube Arrays for Highly Efficient Visible-Light Photoelectrochemical Water Splitting

Shi-Wei Lin, Mei-Hong Tong, Yan-Xin Chen, Rui Chen, Hai-Peng Zhao, Xia Jiang, Kai Yang, Can-Zhong Lu

ACS Applied Energy Materials· Volume 6· Issue 2
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Source abstract

Abstract

Composite of rare earth oxides with TiO 2 nanotube arrays can effectively modify the photoelectrochemical (PEC) behavior of TiO 2 . A CeO 2 /TiO 2 heterojunction was prepared by loading CeO 2 nanoparticles on anodized TiO 2 nanotube (TNT) arrays for PEC water splitting. The CeO 2 /TNT electrode exhibited a high photocurrent density of 2.11 mA·cm –2, 4.3 times that of pure TNT (0.49 mA·cm –2 ) at 1.23 V vs RHE under AM 1.5G light. And CeO 2 /TNT realized a high PEC H 2 evolution rate of 17.86 μmol/h, 4.5 times that of pure TNT at 1.55 V vs RHE. The effective performance of the CeO 2 /TNT electrode could be attributed to its reasonable band gap structure facilitating visible light absorption and efficient charge transfer, inhibiting the recombination of electron/hole pairs. This work confirms the successful construction of CeO 2 /TiO 2 heterojunction on TNT arrays for improving the PEC performance of TiO 2 for H 2 production.
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Research context

NanomaterialsComposites

OpenAlex topics: Advanced Photocatalysis Techniques · TiO2 Photocatalysis and Solar Cells · Copper-based nanomaterials and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou341000, Jiangxi, China

CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou350002, China

Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare-Earth Materials, Haixi Institutes, Chinese Academy of Sciences, Xiamen361021, China

Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou350108, China

College of Chemistry, Fuzhou University, Fuzhou350116, China

Funding

Youth Innovation Foundation of Xiamen · Jiangxi University of Science and Technology · Natural Science Foundation of Fujian Province · National Natural Science Foundation of China · Chinese Academy of Sciences · Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China · Major Research Project of Xiamen

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