Template Synthesis of Nanoparticle Arrays of Gold and Platinum in Mesoporous Silica Films

Abstract

Mesoporous silica films work as templates to form uniform nanoparticles of Au and Pt. The composite materials form an array of metal nanoparticles (diameter ca. 2.5 nm) in the one-dimensional mesopores (pore diameter 2.7 nm), showing an ordered structure in the TEM observation. The nanoparticles are isolated from the silica film by dissolving with a diluted HF solution, and in the presence of 1-dodecanethiol unsupported Au nanoparticles form a superlattice structure.

Synthesis of Gold Catalysts Supported on Mesoporous Silica Materials: Recent Developments

“…AuNPs (2.5 ± 0.3 nm) closely packed in the mesopores of MCM-41-type mesoporous silica films were prepared by impregnation with HAuCl 4 by Fukuoka et al [176,183]. The silica materials were immersed in aqueous solution of HAuCl 4 .…”

Synthesis and electronic property of platinum nanowire and nanoparticle in mesoporous silica template

“…Similar results were obtained using MCM-41, SBA-15, and HMM-1 as supports. We have so far synthesized nanowires of Rh, Pd, Pt, Au and bimetallic Pt-Rh, Pt-Pd by the photoreduction method [14][15][16][17][18][19][20][21][22][23][24].…”

“…Therefore, the mesoporous silicas provide great opportunities as a template of nanostructured materials. 2 In our study of the ship-in-bottle synthesis of metal clusters in microporous zeolites [7,13], we extended this chemistry from zeolites to mesoporous silicas and found the formation of metal nanowires in the mesopores [14][15][16][17][18][19][20][21][22][23][24]. Here we report selective synthesis of metal nanowires and nanoparticles in FSM-16 and HMM-1.…”

The modification of MoO3 nanoparticles supported on mesoporous SBA-15: characterization using X-ray scattering, N2 physisorption, transmission electron microscopy, high-angle annular darkfield technique, Raman and XAFS spectroscopy

“…Such incorporated nanoparticles may have interesting optical, magnetic, and catalytic properties. In addition to the studies of the formation of metal nanoparticles and nanowires, such as Pt [3][4][5], Pd [6][7][8][9], Au [3-5, 10, 11], Ag [3], and Ti [12], the formation of binary nanomaterials such as PbS [13], CdS [14], TiN [15], and GaN [16] within the nanoscale channels of these mesoporous materials have been explored. More recently, highly ordered quantum wires of Zn 1-x Mn x S [17] and Cd 1-x Mn x S [18] have been successfully synthesized within the mesopores of SBA-15.…”