TY - JOUR
T1 - Preparation and stabilization of gold nanoparticles formed by in situ reduction of aqueous chloroaurate ions within surface-modified mesoporous silica
AU - Ghosh, Anirban
AU - Patra, Chitta Ranjan
AU - Mukherjee, Priyabrata
AU - Sastry, Murali
AU - Kumar, Rajiv
N1 - Funding Information:
AG and CRP gratefully acknowledge the Council of Scientific and Industrial Research, Government of India for granting research fellowships. The authors thank Drs. A.B. Mandale and R. Parischa for their helpful co-operation in carrying out XPS and TEM experiments.
PY - 2003/3/18
Y1 - 2003/3/18
N2 - A convenient method for the synthesis and simultaneous stabilization of gold nanoparticles in organo-functionalized MCM-41 is described. The silanol groups present on the surface of the mesoporous matrix reduce aqueous chloroaurate ions, resulting in the formation of gold nanoparticles, which are subsequently anchored to the host matrix via organic functionality. The method, in which propylamine-MCM-41 or propylthiol-MCM-41 is treated with a dilute aqueous solution of HAuCl4 at ambient conditions, is quite simple and environmentally benign as there is no need to add any external reducing agent. The nano-Au-MCM-41 hybrid materials were characterized by XRD, UV-Vis, TEM, XPS, EDX and N2 adsorption measurements.
AB - A convenient method for the synthesis and simultaneous stabilization of gold nanoparticles in organo-functionalized MCM-41 is described. The silanol groups present on the surface of the mesoporous matrix reduce aqueous chloroaurate ions, resulting in the formation of gold nanoparticles, which are subsequently anchored to the host matrix via organic functionality. The method, in which propylamine-MCM-41 or propylthiol-MCM-41 is treated with a dilute aqueous solution of HAuCl4 at ambient conditions, is quite simple and environmentally benign as there is no need to add any external reducing agent. The nano-Au-MCM-41 hybrid materials were characterized by XRD, UV-Vis, TEM, XPS, EDX and N2 adsorption measurements.
KW - Auto-reduction
KW - Gold nanoparticle
KW - MCM-41
KW - Organo-functionalized mesoporous silica
KW - Organo-inorganic nanocomposite
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U2 - 10.1016/S1387-1811(02)00626-1
DO - 10.1016/S1387-1811(02)00626-1
M3 - Article
AN - SCOPUS:0037453045
SN - 1387-1811
VL - 58
SP - 201
EP - 211
JO - Microporous and Mesoporous Materials
JF - Microporous and Mesoporous Materials
IS - 3
ER -