Issue 8, 2020

Effect of aspect ratios of rutile TiO2 nanorods on overall photocatalytic water splitting performance

Abstract

The spatial separation of reduction and oxidation reaction sites on the different facets of a semiconductor is an ideal and promising route for overall photocatalytic water splitting due to efficient charge carrier separation. Rutile TiO2 has separate oxidation and reduction crystal facets and can be used to achieve direct splitting of pure water under ultraviolet (UV) light irradiation. In order to improve the rate of water oxidation reaction, the ratio of different crystal facets of rutile should be regulated controllably. However, the preparation of rutile TiO2 architecture has been limited by the availability of synthetic techniques. In this study, rutile TiO2 nanorods with various aspect ratios were accurately prepared in the presence of Cl anions and H+ cations, which were found to play a crucial role in forming the morphology of rutile TiO2 nanorods. In addition, the mechanism involving the growth of rutile TiO2 nanorods with different aspect ratios is proposed. Rutile TiO2 nanorods with a high proportion of oxidative (111) facets provided higher overall water splitting reactivity.

Graphical abstract: Effect of aspect ratios of rutile TiO2 nanorods on overall photocatalytic water splitting performance

Associated articles

Supplementary files

Article information

Article type
Paper
Submitted
26 दिसम्बर 2019
Accepted
18 जनवरी 2020
First published
13 फरवरी 2020

Nanoscale, 2020,12, 4895-4902

Effect of aspect ratios of rutile TiO2 nanorods on overall photocatalytic water splitting performance

B. Fu, Z. Wu, S. Cao, K. Guo and L. Piao, Nanoscale, 2020, 12, 4895 DOI: 10.1039/C9NR10870J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements