Synthesis and characterization of Ag deposited TiO2 particles by laser ablation in water

被引：15

作者：

Liu, C. H. ^{[1
,2
]}

Hong, M. H. ^{[1
,3
]}

Zhou, Y. ^{[3
]}

Chen, G. X. ^{[2
]}

Saw, M. M. ^{[4
]}

Hor, A. T. S. ^{[4
]}

机构：

[1] Dept Elect & Comp Engn, Singapore 117576, Singapore

[2] Charted Semicond Mfg Ltd, Singapore 738406, Singapore

[3] Data Storage Div, Singapore 117608, Singapore

[4] Natl Univ Singapore, Dept Chem, Singapore 117543, Singapore

来源：

PHYSICA SCRIPTA | 2007年 / T129卷

关键词：

D O I：

10.1088/0031-8949/2007/T129/072

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Ag deposited TiO2 (Ag/TiO2) particles were synthesized by laser ablation of silver and titanium targets in de-ionized (DI) water. Post-annealing makes the structure stable and the materials change to crystalline state. It is a new approach to form Ag) TiO2 particles with a simple system and non-toxic materials. TiO2 particles with size from 20 to 30 nm coated with silver nano-clusters were observed. The silver nano-clusters can enhance the absorption capability of TiO2 photocatalysts. UV-vis spectrum analysis shows that there is a strong absorption peak at around 400 nm. It is attributed to Ag nanoparticles surface plasmon resonance (SPR) effect. This effect helps to improve the spectral characteristics of TiO2 nanoparticles with its absorption spectra shifted to a longer wavelength region. From the above properties, Ag/TiO2 nanoparticles would have new potential applications in photocatalyst and photo-anode.

引用

页码：326 / 328

页数：3

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