TY - JOUR
T1 - Preparation of noble metal nanoparticles @ titania precursor composite electrostatic self-assembled film
AU - Miyazaki, Yasuo
AU - Shiratori, Seimei
N1 - Funding Information:
The authors thanks S. Shinagawa, K. Kawano and T. Mitani (Central Service Facilities for Research, Keio University) for FE-TEM measurements, B. Ding (Keio University) for critical reading of the manuscript. This work was partly supported by KEIO Life Conjugated Chemistry (LCC) Programme of the Centre of Excellence (COE) Research Project in the 21st century sponsored by Japanese Ministry of Education, Science, Culture, and Sports.
PY - 2006/3/21
Y1 - 2006/3/21
N2 - Noble metal nanoparticles as Au, Pd, and Pt were successfully incorporated throughout titania precursor composite layer-by-layer electrostatic self-assembled (LbL-ESA) film under basic condition because the LbL-ESA film is rich in 'free' imine groups, which can behave as ion-adsorption sites to the anionic precursors. The precursors were bound to the imine groups, resulting in formation of nanoparticles in the film through reduction. In case of Au composites, repetition of ion exchange-reduction treatment led to increase of the concentration of Au loaded and growth of these crystal sizes. The subsequent formation of nano particles at LbL-ESA film was convenient process to fabricate nanocomposites, and has a wide range of applications in the fields of catalysis, optoelectronics, and sensing materials.
AB - Noble metal nanoparticles as Au, Pd, and Pt were successfully incorporated throughout titania precursor composite layer-by-layer electrostatic self-assembled (LbL-ESA) film under basic condition because the LbL-ESA film is rich in 'free' imine groups, which can behave as ion-adsorption sites to the anionic precursors. The precursors were bound to the imine groups, resulting in formation of nanoparticles in the film through reduction. In case of Au composites, repetition of ion exchange-reduction treatment led to increase of the concentration of Au loaded and growth of these crystal sizes. The subsequent formation of nano particles at LbL-ESA film was convenient process to fabricate nanocomposites, and has a wide range of applications in the fields of catalysis, optoelectronics, and sensing materials.
KW - In situ formation
KW - Layer-by-layer electrostatic self-assembly (LbL-ESA)
KW - Nanoparticles
KW - Polyelectrolyte
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U2 - 10.1016/j.tsf.2005.07.041
DO - 10.1016/j.tsf.2005.07.041
M3 - Conference article
AN - SCOPUS:31544442686
VL - 499
SP - 29
EP - 34
JO - Thin Solid Films
JF - Thin Solid Films
SN - 0040-6090
IS - 1-2
T2 - Proceedings of the Sixth International Conference on Nano-Molecular Electronics (ICNME 2004)
Y2 - 15 December 2004 through 17 December 2004
ER -