TY - GEN
T1 - In-Situ quick XAFS study on the formation mechanism of Cu nanoparticles synthesized in aqueous phase
AU - Nishimura, Shun
AU - Takagaki, Atsushi
AU - Maenosono, Shinya
AU - Ebitani, Kohki
PY - 2010
Y1 - 2010
N2 - The formation process of Cu nanoparticles (NPs) capped by poly(N-vinyl-2-pyrrolidone) (PVP) using a wet-chemical reduction method was observed with in-situ time-resolved X-ray adsorption fine structure (XAFS) method in combination with other analytical techniques. XAFS analysis directly indicated that the Cu(OH)2 and Cu+ species were formed as intermediates, and their life-time were extended by adding PVP capping agent. The morphology analysis and indicator method also supported that both reticulated Cu(OH)2 structure and Cu+ intermediate remained for a long time with an increase in PVP capping agent. Our results suggested that the PVP capping agent plays an important role to the reaction kinetic resulting from extending the life-time of intermediates such as Cu(OH)2 and Cu+ species.
AB - The formation process of Cu nanoparticles (NPs) capped by poly(N-vinyl-2-pyrrolidone) (PVP) using a wet-chemical reduction method was observed with in-situ time-resolved X-ray adsorption fine structure (XAFS) method in combination with other analytical techniques. XAFS analysis directly indicated that the Cu(OH)2 and Cu+ species were formed as intermediates, and their life-time were extended by adding PVP capping agent. The morphology analysis and indicator method also supported that both reticulated Cu(OH)2 structure and Cu+ intermediate remained for a long time with an increase in PVP capping agent. Our results suggested that the PVP capping agent plays an important role to the reaction kinetic resulting from extending the life-time of intermediates such as Cu(OH)2 and Cu+ species.
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M3 - Conference contribution
AN - SCOPUS:78049451821
SN - 9781439834015
T3 - Nanotechnology 2010: Advanced Materials, CNTs, Particles, Films and Composites - Technical Proceedings of the 2010 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2010
SP - 356
EP - 359
BT - Nanotechnology 2010
T2 - Nanotechnology 2010: Advanced Materials, CNTs, Particles, Films and Composites - 2010 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2010
Y2 - 21 June 2010 through 24 June 2010
ER -