Issue 17, 2011
From the journal:

CrystEngComm

Photo-induced nucleation of rutilenanorods—an ignored parameter in crystallization†

Tsung-Ying Ke,a   Po-Chin Chen,a   Min-Han Yang,a   Hsin-Tien Chiuc  and  Chi-Young Lee*ab  

* Corresponding authors

a Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, Taiwan, R. O. C
Fax: +886-3-5166687
Tel: +886-3-5742570

b Center for Nanotechnology, Materials Science, and Microsystems, National Tsing Hua University, Hsinchu, Taiwan, R. O. C
E-mail: cylee@mx.nthu.edu.tw
Fax: +886-3-5166687
Tel: +886-3-5742570

c Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan, R. O. C

Abstract

This work presents a surfactant-free and economical sol–gel method to synthesize multi-branched rutile TiO2 nano-trees. Simple illumination by incandescent light during synthesis causes numerous branches to grow from the sides of nanorods, this process is accompanied by hydroxylation of the crystal surface. A {101} twin is demonstrated to connect the trunk to the branches. The extents of branching and surface hydroxylation are controlled by either photo-illumination or the addition of an exciton scavenger (H2O2). The relationship between the quantity of the branches and the excitons can be elucidated by considering photo-induced defects.

Graphical abstract: Photo-induced nucleation of rutile nanorods—an ignored parameter in crystallization

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Article information

DOI
https://doi.org/10.1039/C1CE05317E
Article type
Communication
Submitted
15 Mar 2011
Accepted
23 Jun 2011
First published
13 Jul 2011

CrystEngComm, 2011,13, 5292-5295

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Photo-induced nucleation of rutile nanorods—an ignored parameter in crystallization

T. Ke, P. Chen, M. Yang, H. Chiu and C. Lee, CrystEngComm, 2011, 13, 5292 DOI: 10.1039/C1CE05317E

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