Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/162423
Title: Heterostructure-induced light absorption and charge-transfer optimization of a TiO₂ photoanode for photoelectrochemical water splitting
Authors: Yi, Qinghua
Cong, Shan
Wang, Hao
Zhou, Xinjie
Chen, Jianmei
Li, Ke
Liu, Yushen
Lee, Jong-Min
Keywords: Engineering::Chemical technology
Issue Date: 2021
Source: Yi, Q., Cong, S., Wang, H., Zhou, X., Chen, J., Li, K., Liu, Y. & Lee, J. (2021). Heterostructure-induced light absorption and charge-transfer optimization of a TiO₂ photoanode for photoelectrochemical water splitting. ACS Applied Energy Materials, 4(12), 14440-14446. https://dx.doi.org/10.1021/acsaem.1c03112
Journal: ACS Applied Energy Materials
Abstract: Rutile titanium dioxide (TiO2) exhibits excellent photoelectrochemical properties but limited photocatalytic performance due to its large band gap and fast electron-hole recombination. Here, we report a composite catalyst of NiTiO3 nanoparticle-coated TiO2 nanorod arrays (NiTiO3/TiO2 NRAs) via an electrostatic assembly strategy. The NiTiO3/TiO2 heterostructure endows an enlarged absorption range and enhanced electron-hole separation efficiency. When being used as an electrode in photoelectrochemical water splitting, it achieves the highest photocurrent density of 1.94 mA cm-2 at 1.0 V versus reversible hydrogen electrode, which is 3.74 times higher than the photocurrent density of pristine rutile TiO2 NRAs (0.51 mA cm-2). The heterostructure engineering strategy is demonstrated to enhance the photoelectrochemical performance, which can be extended to optimize various semiconductor photocatalysts.
URI: https://hdl.handle.net/10356/162423
ISSN: 2574-0962
DOI: 10.1021/acsaem.1c03112
Rights: © 2021 American Chemical Society. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SCBE Journal Articles

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