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Solvothermal preparation of Ti3+ self-doped TiO2-x nanotube arrays for enhanced photoelectrochemical performance.
Hou, Junwei; Xu, Tengze; Ning, Yanbin; Huang, Bingxuan; Yang, Ye; Wang, Qingyao.
Afiliação
  • Hou J; State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing at Karamay, Karamay 834000, China. Electronic address: Junweihou@cupk.edu.cn.
  • Xu T; State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing at Karamay, Karamay 834000, China.
  • Ning Y; State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing at Karamay, Karamay 834000, China.
  • Huang B; State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing at Karamay, Karamay 834000, China.
  • Yang Y; State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing at Karamay, Karamay 834000, China.
  • Wang Q; School of Chemistry and Materials Science, Ludong University, Yantai 264025, China. Electronic address: wangqingyao0532@163.com.
Spectrochim Acta A Mol Biomol Spectrosc ; 244: 118896, 2021 Jan 05.
Article em En | MEDLINE | ID: mdl-32919156
Ti3+ self-doped TiO2-x nanotube arrays (TiO2-x NTs) were prepared by solvothermal treatment in KBH4 ethanol solution followed by calcination, and were characterized by field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and UV-vis diffusion reflection spectroscopy (DRS). The photoelectrochemical properties of TiO2-x NTs prepared in different KBH4 concentrations were investigated. The TiO2-x NTs exhibited high visible light response, visible light photocurrent and photoelectrocatalytic activities. The active species and photocatalytic mechanism for the dye degradation were proposed, and the improved photoelectrochemical performance was attributed to the synergistic effect of the narrowed energy gap and enhanced electron transportation. The ability to improve the photoelectrochemical properties of TiO2-x electrode materials should open up new opportunities for high-performance solar cells and photocatalysts.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Spectrochim Acta A Mol Biomol Spectrosc Assunto da revista: BIOLOGIA MOLECULAR Ano de publicação: 2021 Tipo de documento: Article País de publicação: Reino Unido

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Spectrochim Acta A Mol Biomol Spectrosc Assunto da revista: BIOLOGIA MOLECULAR Ano de publicação: 2021 Tipo de documento: Article País de publicação: Reino Unido