Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/105619
Title: The influence of Ti doping on morphology and photoelectrochemical properties of hematite grown from aqueous solution for water splitting
Authors: Zhao, Xin
Feng, Jianyong
Wang, Ning
Yao, Xin
Chen, Wei
Chen, Shi
Huang, Zhaohong
Chen, Zhong
Keywords: Hematite
Engineering::Materials::Energy materials
Photoelectrochemical Water Splitting
Issue Date: 2018
Source: Zhao, X., Feng, J., Wang, N., Yao, X., Chen, W., Chen, S., . . . Chen, Z. (2018). The influence of Ti doping on morphology and photoelectrochemical properties of hematite grown from aqueous solution for water splitting. Energy Technology, 6(11), 2188-2199. doi:10.1002/ente.201800286
Series/Report no.: Energy Technology
Abstract: Hematite (α‐Fe2O3) is a promising material for photoelectrochemical (PEC) water splitting. However, the poor conductivity and short hole diffusion length have limited its energy conversion efficiency. Nanorod structure could improve the transport of charge carriers and increase the reaction sites. Herein, we have investigated the influence of Ti doping on the morphology change and find that insufficient precursor concentration is the main reason for the morphology deviation from the optimized nanorod structure. The photoelectrochemical performance of the Ti‐doped nanorod hematite was investigated and optimized. Analysis shows Ti plays a crucial role in improving both the bulk charge separation and surface charge transfer. We have also analyzed the limiting factor of the performance and the corresponding solution. Our systematic investigation indicates that the electron transport is still a limiting factor for the PEC performance of hematite. Further improvement can be obtained through replenishing the Ti source during the nanorod growth, and by subsequent nitrogen treatment.
URI: https://hdl.handle.net/10356/105619
http://hdl.handle.net/10220/50245
DOI: 10.1002/ente.201800286
Rights: This is the peer reviewed version of the following article: Zhao, X., Feng, J., Wang, N., Yao, X., Chen, W., Chen, S., Huang, Z., & Chen, Z. (2018). The influence of Ti doping on morphology and photoelectrochemical properties of hematite grown from aqueous solution for water splitting. Energy Technology, 6(11), 2188-2199, which has been published in final form at https://doi.org/10.1002/ente.201800286. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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