The shape-specific photocatalytic efficiency of quantum size TiO 2 nanoparticles

Zheng Chen; Jinghai Liu; Song Qiu; Graham Dawson; Wei Chen

doi:10.1016/j.catcom.2012.01.021

The shape-specific photocatalytic efficiency of quantum size TiO ₂ nanoparticles

Zheng Chen, Jinghai Liu, Song Qiu, Graham Dawson, Wei Chen

Research output: Journal article publication › Journal article › Academic research › peer-review

11 Citations (Scopus)

Abstract

The hypothesis of increasing electron/hole separation and photocatalytic activity by elongating one dimension size of extremely small nanoparticles was verified. Comparable TiO ₂ nanorods and nanodots were prepared using very similar hydrolysis processes in oleic acid. The oleic acid coating on the TiO ₂ surface was removed using UV irradiation. The structure, surface and absorption properties of samples were characterized. Photoluminescence and photocatalytic activity of samples were evaluated semi-quantitatively. The experimental results proved that the nanorods did have more efficient electron/hole separation and higher photocatalytic activity than spherical nanodots.

Original language	English
Pages (from-to)	1-4
Number of pages	4
Journal	Catalysis Communications
Volume	21
DOIs	https://doi.org/10.1016/j.catcom.2012.01.021
Publication status	Published - 5 May 2012

Keywords

1D
One dimension
PL
Shape

ASJC Scopus subject areas

Catalysis
General Chemistry
Process Chemistry and Technology

More information

10.1016/j.catcom.2012.01.021

Cite this

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title = "The shape-specific photocatalytic efficiency of quantum size TiO 2 nanoparticles",

abstract = "The hypothesis of increasing electron/hole separation and photocatalytic activity by elongating one dimension size of extremely small nanoparticles was verified. Comparable TiO 2 nanorods and nanodots were prepared using very similar hydrolysis processes in oleic acid. The oleic acid coating on the TiO 2 surface was removed using UV irradiation. The structure, surface and absorption properties of samples were characterized. Photoluminescence and photocatalytic activity of samples were evaluated semi-quantitatively. The experimental results proved that the nanorods did have more efficient electron/hole separation and higher photocatalytic activity than spherical nanodots.",

keywords = "1D, One dimension, PL, Shape",

author = "Zheng Chen and Jinghai Liu and Song Qiu and Graham Dawson and Wei Chen",

note = "Funding Information: This work is financial supported by the National Science Foundation of China ( 20803051 ). ",

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doi = "10.1016/j.catcom.2012.01.021",

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T1 - The shape-specific photocatalytic efficiency of quantum size TiO 2 nanoparticles

AU - Chen, Zheng

AU - Liu, Jinghai

AU - Qiu, Song

AU - Dawson, Graham

AU - Chen, Wei

N1 - Funding Information: This work is financial supported by the National Science Foundation of China ( 20803051 ).

PY - 2012/5/5

Y1 - 2012/5/5

N2 - The hypothesis of increasing electron/hole separation and photocatalytic activity by elongating one dimension size of extremely small nanoparticles was verified. Comparable TiO 2 nanorods and nanodots were prepared using very similar hydrolysis processes in oleic acid. The oleic acid coating on the TiO 2 surface was removed using UV irradiation. The structure, surface and absorption properties of samples were characterized. Photoluminescence and photocatalytic activity of samples were evaluated semi-quantitatively. The experimental results proved that the nanorods did have more efficient electron/hole separation and higher photocatalytic activity than spherical nanodots.

AB - The hypothesis of increasing electron/hole separation and photocatalytic activity by elongating one dimension size of extremely small nanoparticles was verified. Comparable TiO 2 nanorods and nanodots were prepared using very similar hydrolysis processes in oleic acid. The oleic acid coating on the TiO 2 surface was removed using UV irradiation. The structure, surface and absorption properties of samples were characterized. Photoluminescence and photocatalytic activity of samples were evaluated semi-quantitatively. The experimental results proved that the nanorods did have more efficient electron/hole separation and higher photocatalytic activity than spherical nanodots.

KW - 1D

KW - One dimension

KW - PL

KW - Shape

UR - https://www.scopus.com/pages/publications/84862831384

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DO - 10.1016/j.catcom.2012.01.021

M3 - Journal article

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SN - 1566-7367

VL - 21

SP - 1

EP - 4

JO - Catalysis Communications

JF - Catalysis Communications

ER -