Synthesis and characterization of Ag deposited TiO2 particles by laser ablation in water
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 30nm 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 400nm. 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.
C H Liu M H Hong Y Zhou G X Chen M M Saw A T S Hor
Department of Electrical and Computer Engineering, 4 Engineering Drive 3, Singapore 117576;Chartered Department of Electrical and Computer Engineering, 4 Engineering Drive 3,Singapore 117576;Data Stora Data Storage Institute, 5 Engineering Drive 1, Singapore 117608 Chartered Semiconductor Manufacturing Ltd, 60 Woodlands Industrial Park D, Street 2, Singapore 73840 Department of Chemistry, 3 Science Drive 3, Singapore 117543
国际会议
第二届功能原料国际研讨会(The 2rd International Symposium on Functional Materials)
杭州
英文
326-328
2007-05-16（万方平台首次上网日期，不代表论文的发表时间）