Effect of plasma treatment on surface properties of TiO2nanoparticulate films

Yaan Cao; Qingjiu Meng; Wensheng Yang; Jianghong Yao; Yongchun Shu; Wei Wang; Guohua Chen

doi:10.1016/j.colsurfa.2005.04.029

Effect of plasma treatment on surface properties of TiO₂nanoparticulate films

Yaan Cao, Qingjiu Meng, Wensheng Yang, Jianghong Yao, Yongchun Shu, Wei Wang, Guohua Chen

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

23 Citations (Scopus)

Abstract

TiO2nanoparticle films were prepared by plasma-enhanced chemical vapor deposition, and subsequently, their surfaces were treated by TiCl4and O2plasmas, respectively. Experiments of phenol photodegradation show that the TiO2film treated by O2plasma presents much higher photocatalytic activity than that treated by TiCl4plasma. X-ray photoelectron spectral analyses indicate that more active species, such as O2-, are formed on surface of the film treated by O2plasma than that treated by TiCl4plasma. The energy levels of the surface species and the photogenerated electronic transitions via these surface species are further investigated by surface photovoltage spectra (SPS) and electric field-induced surface photovoltage spectra (EFISPS).

Original language	English
Pages (from-to)	181-186
Number of pages	6
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	262
Issue number	1-3
DOIs	https://doi.org/10.1016/j.colsurfa.2005.04.029
Publication status	Published - 15 Jul 2005
Externally published	Yes

Keywords

PCVD
Photocatalytic activity
Surface species
TiO nanoparticulate film 2

ASJC Scopus subject areas

Surfaces and Interfaces
Physical and Theoretical Chemistry
Colloid and Surface Chemistry

More information

10.1016/j.colsurfa.2005.04.029

Cite this

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title = "Effect of plasma treatment on surface properties of TiO2nanoparticulate films",

abstract = "TiO2nanoparticle films were prepared by plasma-enhanced chemical vapor deposition, and subsequently, their surfaces were treated by TiCl4and O2plasmas, respectively. Experiments of phenol photodegradation show that the TiO2film treated by O2plasma presents much higher photocatalytic activity than that treated by TiCl4plasma. X-ray photoelectron spectral analyses indicate that more active species, such as O2-, are formed on surface of the film treated by O2plasma than that treated by TiCl4plasma. The energy levels of the surface species and the photogenerated electronic transitions via these surface species are further investigated by surface photovoltage spectra (SPS) and electric field-induced surface photovoltage spectra (EFISPS).",

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T1 - Effect of plasma treatment on surface properties of TiO2nanoparticulate films

AU - Cao, Yaan

AU - Meng, Qingjiu

AU - Yang, Wensheng

AU - Yao, Jianghong

AU - Shu, Yongchun

AU - Wang, Wei

AU - Chen, Guohua

PY - 2005/7/15

Y1 - 2005/7/15

N2 - TiO2nanoparticle films were prepared by plasma-enhanced chemical vapor deposition, and subsequently, their surfaces were treated by TiCl4and O2plasmas, respectively. Experiments of phenol photodegradation show that the TiO2film treated by O2plasma presents much higher photocatalytic activity than that treated by TiCl4plasma. X-ray photoelectron spectral analyses indicate that more active species, such as O2-, are formed on surface of the film treated by O2plasma than that treated by TiCl4plasma. The energy levels of the surface species and the photogenerated electronic transitions via these surface species are further investigated by surface photovoltage spectra (SPS) and electric field-induced surface photovoltage spectra (EFISPS).

AB - TiO2nanoparticle films were prepared by plasma-enhanced chemical vapor deposition, and subsequently, their surfaces were treated by TiCl4and O2plasmas, respectively. Experiments of phenol photodegradation show that the TiO2film treated by O2plasma presents much higher photocatalytic activity than that treated by TiCl4plasma. X-ray photoelectron spectral analyses indicate that more active species, such as O2-, are formed on surface of the film treated by O2plasma than that treated by TiCl4plasma. The energy levels of the surface species and the photogenerated electronic transitions via these surface species are further investigated by surface photovoltage spectra (SPS) and electric field-induced surface photovoltage spectra (EFISPS).

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