Origin of low photocatalytic activity of rutile TiO2

Hyun Suk Jung; Hyungtak Kim

doi:10.3365/eml.2009.06.073

Origin of low photocatalytic activity of rutile TiO₂

Hyun Suk Jung
, Hyungtak Kim

Kookmin University
Hongik University

Research output: Contribution to journal › Article › peer-review

47 Scopus citations

Abstract

Rutile TiO₂ nanoparticles were synthesized using the colloidal sol-gel process and their photocatalytic properties were characterized in comparison with anatase TiO₂ nanoparticles. The synthesized rutile nanoparticles were found to possess higher surfaces area than the anatase nanoparticles and to exhibit lower photocatalytic activities, demonstrating that rutile TiO₂ has intrinsically low photocatalytic properties. The photoluminescence (PL) study suggested that the inferior photocatalytic activity of rutile nanoparticles is correlated with the intrinsic recombination of photogenerated electron-hole pairs.

Original language	English
Pages (from-to)	73-76
Number of pages	4
Journal	Electronic Materials Letters
Volume	5
Issue number	2
DOIs	https://doi.org/10.3365/eml.2009.06.073
State	Published - Jun 2009
Externally published	Yes

Keywords

Anatase
Charge recombination
Nanoparticle
Photocatalyst
Rutile

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10.3365/eml.2009.06.073

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abstract = "Rutile TiO2 nanoparticles were synthesized using the colloidal sol-gel process and their photocatalytic properties were characterized in comparison with anatase TiO2 nanoparticles. The synthesized rutile nanoparticles were found to possess higher surfaces area than the anatase nanoparticles and to exhibit lower photocatalytic activities, demonstrating that rutile TiO2 has intrinsically low photocatalytic properties. The photoluminescence (PL) study suggested that the inferior photocatalytic activity of rutile nanoparticles is correlated with the intrinsic recombination of photogenerated electron-hole pairs.",

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AB - Rutile TiO2 nanoparticles were synthesized using the colloidal sol-gel process and their photocatalytic properties were characterized in comparison with anatase TiO2 nanoparticles. The synthesized rutile nanoparticles were found to possess higher surfaces area than the anatase nanoparticles and to exhibit lower photocatalytic activities, demonstrating that rutile TiO2 has intrinsically low photocatalytic properties. The photoluminescence (PL) study suggested that the inferior photocatalytic activity of rutile nanoparticles is correlated with the intrinsic recombination of photogenerated electron-hole pairs.

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KW - Charge recombination

KW - Nanoparticle

KW - Photocatalyst

KW - Rutile

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Origin of low photocatalytic activity of rutile TiO₂

Abstract

Keywords

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