Facet-controlled synthesis and facet-dependent photocatalytic properties of SnO2 micropolyhedrons

Gengxia Zhou; Xinglong Wu; Lizhe Liu; Xiaobin Zhu; Xiaoshu Zhu; Yanling Hao; Paul K. Chu

doi:10.1016/j.apsusc.2015.05.069

Author(s)

Gengxia Zhou
Xinglong Wu
Lizhe Liu
Xiaobin Zhu
Xiaoshu Zhu
Yanling Hao

Detail(s)

Original language	English
Pages (from-to)	798-804
Journal / Publication	Applied Surface Science
Volume	349
Online published	16 May 2015
Publication status	Published - 15 Sept 2015

Link(s)

DOI	DOI https://doi.org/10.1016/j.apsusc.2015.05.069 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-84937699843&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(f9ba69be-09d7-4107-9f8a-720a6b6842e0).html

Abstract

The facet-dependent properties of SnO₂ are of fundamental and practical importance. In this study, by adjusting the deposition temperature during chemical vapor deposition, octahedral SnO₂ with the exposed (1 0 1) facet and two other kinds of SnO₂ polyhedrons with (1 0 1) and (1 0 0) facets with different ratios are fabricated controllably based on the vapor-solid growth mechanism. A slight increase in the deposition temperature from 1030 to 1070 °C decreases the surface energy of the reduced (1 0 1) facet with Sn termination, leading to the formation of polyhedrons with different area ratios of (1 0 1) to (1 0 0) facets. By adopting the terephthalic acid fluorescent method, the SnO₂ octahedrons are demonstrated to have the strongest photocatalytic activity due to the formation of surface states induced by 5s electrons of bivalent Sn on the (1 0 1) surface. The results reveal that the photocatalytic properties of SnO₂ microcrystals can be enhanced by facet-controlled synthesis.

Research Area(s)

Photocatalytic activity, SnO<inf>2</inf> polyhedron, Surface states

Citation Format(s)

[ RIS ] [ BibTeX ]

Facet-controlled synthesis and facet-dependent photocatalytic properties of SnO₂ micropolyhedrons. / Zhou, Gengxia; Wu, Xinglong; Liu, Lizhe et al.
In: Applied Surface Science, Vol. 349, 15.09.2015, p. 798-804.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Zhou, G, Wu, X, Liu, L, Zhu, X, Zhu, X, Hao, Y & Chu, PK 2015, 'Facet-controlled synthesis and facet-dependent photocatalytic properties of SnO₂ micropolyhedrons', Applied Surface Science, vol. 349, pp. 798-804. https://doi.org/10.1016/j.apsusc.2015.05.069

Zhou, G., Wu, X., Liu, L., Zhu, X., Zhu, X., Hao, Y., & Chu, P. K. (2015). Facet-controlled synthesis and facet-dependent photocatalytic properties of SnO₂ micropolyhedrons. Applied Surface Science, 349, 798-804. https://doi.org/10.1016/j.apsusc.2015.05.069

Zhou G, Wu X, Liu L, Zhu X, Zhu X, Hao Y et al. Facet-controlled synthesis and facet-dependent photocatalytic properties of SnO₂ micropolyhedrons. Applied Surface Science. 2015 Sept 15;349:798-804. Epub 2015 May 16. doi: 10.1016/j.apsusc.2015.05.069

Zhou, Gengxia ; Wu, Xinglong ; Liu, Lizhe et al. / Facet-controlled synthesis and facet-dependent photocatalytic properties of SnO₂ micropolyhedrons. In: Applied Surface Science. 2015 ; Vol. 349. pp. 798-804.