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Surface polaron states on single-crystal rutile TiO2 nanorods array enhancing charge separation and transfer

Abstract

Polaron states on TiO2 photoanode are an important electron transfer pathway at the electrode-electrolyte interface. Here, we electrochemically doped the single-crystal rutile TiO2 nanorods array with exposed (110) facet to produce surface polaron states, Ti3+-OH, greatly contributing to the charge separation and transfer. Our results experimentally clarified the previous confusing understanding in the origination of the improved photoelectrochemical (PEC) water splitting and verified the enhanced PEC effects mainly from surface polaron states instead of the grain boundaries passivation.

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Supplementary files

Article information


Submitted
02 Sep 2020
Accepted
12 Oct 2020
First published
14 Oct 2020

Dalton Trans., 2020, Accepted Manuscript
Article type
Paper

Surface polaron states on single-crystal rutile TiO2 nanorods array enhancing charge separation and transfer

Q. Yang, H. Zhu, Y. Hou, D. Liu, H. Tang, D. Liu, W. Zhang, S. Yan and Z. Zou, Dalton Trans., 2020, Accepted Manuscript , DOI: 10.1039/D0DT03068F

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