Effect of citrate ions on laser ablation of Ag foil in aqueous medium

0085586 - ÚMCH 2008 RIV GB eng J - Journal Article
Šišková, K. - Vlčková, B. - Turpin, P. Y. - Fayet, C. - Hromádková, Jiřina - Šlouf, Miroslav
Effect of citrate ions on laser ablation of Ag foil in aqueous medium.
[Vliv citrátových iontů na laserovou ablaci stříbrné fólie ve vodě.]
Journal of Physics: Conference Series. Roč. 59, - (2007), s. 202-205. ISSN 1742-6588. E-ISSN 1742-6596.
[International Conference on Laser Ablation /8./. Banff, 11.09.2005-16.09.2005]
R&D Projects: GA ČR GA203/04/0688
Grant - others:GA ČR(CZ) GD203/05/H001
Program: GD
Institutional research plan: CEZ:AV0Z40500505
Keywords : laser ablation * Ag nanoparticles
Subject RIV: CF - Physical ; Theoretical Chemistry

Promoting effect of citrate in 1x10^-5 - 1x10^-2 M concentrations on laser ablation (LA)of a Ag foil in aqueous solution performed by ns laser pulses at 1064 nm is reported. Furthermore, adsorption of citrate ions was found to increase markedly the stability of the resulting LA-Ag hydrosol. The results are discussed on the basis of comparison of surface plasmon extinction spectral characteristics, transmission electron microscopy images, nanoparticle size distributions and surface-enhanced Raman scattering (SERS) spectral tests of hydrosols resulting from LA in neutral and acidic aqueous citrate solutions and in pure water.

Citrátové ionty v koncentračním rozmezí 1x10^-5 - 1x10^-2 M zesilují účinky laserové ablace aplikované na Ag-fólii ve vodě. Navíc tyto ionty výrazně zvyšují stabilitu získaného Ag-koloidu. Tyto skutečnosti byly prokázány pomocí spektrálních charakteristik extinkce povrchového plasmonu, obrazové analýzy TEM mikrofotografií a SERS spektroskopie.
Permanent Link: http://hdl.handle.net/11104/0148066