TY - JOUR
T1 - Deposition of gold nanoparticles on silica spheres by electroless metal plating technique
AU - Kobayashi, Yoshio
AU - Tadaki, Yohei
AU - Nagao, Daisuke
AU - Konno, Mikio
N1 - Funding Information:
This research was partially supported by the Ministry of Education, Culture, Sports, Science and Technology, a Grant-in-Aid for the COE project Giant Molecules and Complex Systems.
PY - 2005/3/15
Y1 - 2005/3/15
N2 - A previously proposed method for metal deposition with silver [Kobayashi et al., Chem. Mater. 13 (2001) 1630] was extended to uniform deposition of gold nanoparticles on submicrometer-sized silica spheres. The present method consisted of three steps: (1) the adsorption of Sn2+ ions took place on surface of silica particles, (2) Ag+ ions added were reduced and simultaneously adsorbed to the surface, while Sn2+ was oxidized to Sn4+, and (3) Au+ ions added were reduced and deposited on the Ag surface. TEM observation, X-ray diffractometry, and UV-vis absorption spectroscopy revealed that gold metal nanoparticles with an average particle size of 13 nm and a crystal size of 5.1 nm were formed on the silica spheres with a size of 273 nm at an Au concentration of 0.77 M.
AB - A previously proposed method for metal deposition with silver [Kobayashi et al., Chem. Mater. 13 (2001) 1630] was extended to uniform deposition of gold nanoparticles on submicrometer-sized silica spheres. The present method consisted of three steps: (1) the adsorption of Sn2+ ions took place on surface of silica particles, (2) Ag+ ions added were reduced and simultaneously adsorbed to the surface, while Sn2+ was oxidized to Sn4+, and (3) Au+ ions added were reduced and deposited on the Ag surface. TEM observation, X-ray diffractometry, and UV-vis absorption spectroscopy revealed that gold metal nanoparticles with an average particle size of 13 nm and a crystal size of 5.1 nm were formed on the silica spheres with a size of 273 nm at an Au concentration of 0.77 M.
KW - Deposition
KW - Electroless metal plating
KW - Gold
KW - Nanoparticles
KW - Silica
KW - Surface plasmon resonance
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U2 - 10.1016/j.jcis.2004.09.002
DO - 10.1016/j.jcis.2004.09.002
M3 - Article
C2 - 15721938
AN - SCOPUS:13844254364
VL - 283
SP - 601
EP - 604
JO - Journal of Colloid and Interface Science
JF - Journal of Colloid and Interface Science
SN - 0021-9797
IS - 2
ER -