Three-dimensional TiO2 nanobelt array with a disordered surface and oxygen vacancies for boosted photoelectrochemical water splitting†

IF 2.7 3区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY New Journal of Chemistry Pub Date : 2024-12-04 DOI:10.1039/D4NJ03722G
Ming Meng, Hucheng Zhou, Weifeng Liu, Jing Yang, Honglei Yuan and Zhixing Gan
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Abstract

The exploitation of photoelectrode materials with high-efficiency utilization of solar light, an outstanding separation property of photogenerated charges and a large surface area is extremely important yet significantly challenging. Herein, a three-dimensional array of reduced TiO2 nanobelts with a disordered surface and abundant oxygen vacancies was successfully constructed for PEC water splitting. As expected, the reduced 3D-TiO2 nanobelt array produced a photocurrent density of 0.96 mA cm−2 at 0.22 V vs. Ag/AgCl with a faradaic efficiency of 100%, corresponding to 2.4 times enhancement compared with that of the pristine 3D-TiO2 nanobelt array. Furthermore, IPCE was improved within both the UV and visible light regions. This enhancement originates primarily from the efficient utilization of UV-visible light as well as the promoted separation and transport of photogenerated charges induced by the cooperative effect of the disordered surface and oxygen vacancies. This research sheds new light on exploiting TiO2 nanobelts for PEC applications.

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来源期刊
New Journal of Chemistry
New Journal of Chemistry 化学-化学综合
CiteScore
5.30
自引率
6.10%
发文量
1832
审稿时长
2 months
期刊介绍: A journal for new directions in chemistry
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