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Surfactant-assisted shape evolution of thermally synthesized TiO <inf>2</inf> nanocrystals and their applications to efficient photoelectrodes

Kim, JY and Choi, SB and Kim, DW and Lee, S and Jung, HS and Lee, JK and Hong, KS (2008) Surfactant-assisted shape evolution of thermally synthesized TiO <inf>2</inf> nanocrystals and their applications to efficient photoelectrodes. Langmuir, 24 (8). 4316 - 4319. ISSN 0743-7463

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Abstract

TiO2 nanocrystals were synthesized via a two-phase thermal process, and the shape of the nanocrystals was controlled from nanospheres to nanorods by the ratio of two surfactants. The shape control of nanocrystals was ascribed to the selective adsorption of the two surfactants. The shape of TiO2 nanocrystals influenced the photocatalytic performances of the photoelectrodes through two compromising factors: the relative surface area and the electron transport. The photoelectrode composed of nanorods showed a slower charge recombination rate, while it showed a smaller specific surface area, compared to nanospheres. As a result, the photoelectrodes showed the optimal photocatalytic performance when the nanospheres and the nanorods were mixed. © 2008 American Chemical Society.


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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Kim, JY
Choi, SB
Kim, DW
Lee, S
Jung, HS
Lee, JKjul37@pitt.eduJUL370000-0002-7778-7679
Hong, KS
Centers: Other Centers, Institutes, or Units > Petersen Institute of NanoScience and Engineering
Date: 15 April 2008
Date Type: Publication
Journal or Publication Title: Langmuir
Volume: 24
Number: 8
Page Range: 4316 - 4319
DOI or Unique Handle: 10.1021/la703497e
Schools and Programs: Swanson School of Engineering > Mechanical Engineering and Materials Science
Refereed: Yes
ISSN: 0743-7463
PubMed ID: 18324858
Date Deposited: 30 Oct 2014 16:30
Last Modified: 02 Feb 2019 16:58
URI: http://d-scholarship.pitt.edu/id/eprint/23433

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