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Multi-modification enables TiO2 nanotube arrays with enhanced photoelectrochemical performance

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Abstract

The modification of TiO2 nanotube arrays (TiO2 NTS) to enhance the photoelectrochemical performance is highly applauded yet challenging. In this work, the multi-modification of TiO2 NTS has been achieved by introducing hydrogenation (self-doping) and sulfur-doping as well as semiconductor compounding of WO3, marked as H/S-WO3/TiO2 NTS. Benefiting from the synergistic effect of self-doping, sulfur-doping and WO3 compounding on TiO2 NTS, the as-prepared H/S-WO3/TiO2 NTS achieved a saturated photocurrent density of 2.48 mA/cm2. The corresponding photoconversion efficiency was 1.45%, which was 6.59 times than that of pure TiO2 NTS. Our superior TiO2 NTS enabled by semiconductor compounding, self-doping and sulfur-doping enlightens a new arena for the development of high-performance photoanode materials.

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Data are available on request from the corresponding author.

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Funding

This work was supported by the Plan for Scientific Innovation Talent of Henan University of Technology (11CXRC16).

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Authors and Affiliations

  1. School of Materials Science and Engineering, Henan University of Technology, Zhengzhou, 450001, China

    Tiantian Shangguan, Shikai Liu, Keke Liu, Deqiang Ruan, Haocheng Wu, Taihang Zhang, Runquan Zhao, Zhijian Song, Jialin Wang, Bibo Han & Guojin Yan

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  1. Tiantian Shangguan
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  2. Shikai Liu
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Correspondence to Shikai Liu.

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Shangguan, T., Liu, S., Liu, K. et al. Multi-modification enables TiO2 nanotube arrays with enhanced photoelectrochemical performance. MRS Communications 13, 466–472 (2023). https://doi.org/10.1557/s43579-023-00362-1

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