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Mesoporous silica thin films with highly ordered cubic Pm-3n and three dimensional hexagonal P63/mmc symmetries were synthesized by evaporation induced self assembly (EISA) method controlling the ratio of HCl and tetramethoxysilane in the initial sol solution and the humidity in the dip-coating chamber. Using these optimized mesoporous silica thin films, highly ordered Pt nanodot arrays with cubic...
Pt nanowires are prepared in mesoporous FSM-16 by photoreduction of H2PtCl6, while H2-reduction of H2PtCl6/FSM-16 at 673 K gives Pt nanoparticles in FSM-16. The Pt nanowires and nanoparticles are characterized by physicochemical methods such as XAFS, TEM, XRD, and XPS. The formation mechanism of the Pt nanowires and the catalytic performance in the water–gas-shift reaction are also investigated.
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