Amorphous TiO2-modified CuBi2O4 Photocathode with enhanced photoelectrochemical hydrogen production activity

doi:10.1016/S1872-2067(18)63127-4

Chinese Journal of Catalysis ›› 2018, Vol. 39 ›› Issue (10): 1704-1710.DOI: 10.1016/S1872-2067(18)63127-4

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Amorphous TiO₂-modified CuBi₂O₄ Photocathode with enhanced photoelectrochemical hydrogen production activity

Xianglin Zhu^a, Zihan Guan^a, Peng Wang^a, Qianqian Zhang^a, Ying Dai^b, Baibiao Huang^a

a State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, Shandong, China;
b School of Physics, Shandong University, Jinan 250100, Shandong, China

Received:2018-04-28 Revised:2018-05-30 Online:2018-10-18 Published:2018-08-03
Contact: 10.1016/S1872-2067(18)63127-4
Supported by:
This work was supported by the National Natural Science Foundation of China (51602179, 21333006, 21573135, 11374190) and the National Basic Research Program of China (973 Program, 2013CB632401).

Abstract

Abstract:

In this study, CuBi₂O₄ photocathodes were prepared using a simple electrodeposition method for photoelectrochemical (PEC) hydrogen production. The prepared photocathodes were modified with amorphous TiO₂ and a Pt co-catalyst, which resulted in the formation of CuBi₂O₄/TiO₂ p-n heterojunctions, and enhanced the activities of the as-prepared photocathodes. The novel Pt/TiO₂/CuBi₂O₄ photocathode exhibited a photocurrent of 0.35 mA/cm² at 0.60 V vs. Reversible Hydrogen Electrode (RHE), which was nearly twice that of the Pt/CuBi₂O₄ photocathode. The present study provides a facile method for increasing the efficiency of photocathodes and provides meaningful guidance for the preparation of high-performance CuBi₂O₄ photocathodes.

Key words: Photoelectrochemical hydrogen production, CuBi₂O₄, Amorphous TiO₂, p-n heterojunction, Carriers' separation

Xianglin Zhu, Zihan Guan, Peng Wang, Qianqian Zhang, Ying Dai, Baibiao Huang. Amorphous TiO₂-modified CuBi₂O₄ Photocathode with enhanced photoelectrochemical hydrogen production activity[J]. Chinese Journal of Catalysis, 2018, 39(10): 1704-1710.

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Amorphous TiO₂-modified CuBi₂O₄ Photocathode with enhanced photoelectrochemical hydrogen production activity

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