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»»´óÃ×àÏ: ½ð±Ò+8 2012-09-03 15:47:36
http://pubs.acs.org/doi/abs/10.1021/jp075582m
Estimation of Surface Oxide on Surfactant-Free Gold Nanoparticles Laser-Ablated in Water
Surfactant-free gold nanoparticles were prepared by laser ablation of a gold metal plate in water. The nanoparticles were characterized by absorption spectroscopy, ¦Æ-potential measurements, and XPS spectroscopy. The nanoparticles are negatively charged because the surface atoms are partially oxidized to AuØó-, according to the literature by Sacher and co-workers (J. Phys. Chem. B, 2004, 108, 16864). We further examined electrostatic interactions between nanoparticle and cationic surfactants.
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