| Summary: | 碩士 === 東海大學 === 化學系 === 101 === In this study, metal NPs@PSS was synthesized by using a simple wet photocatalytic method. We prepared the variant molar ratio of metal precursor solutions came into the mesostructure by ion excha-nge, and the polyoxometalates (POM) were used as immobilized photocatalyst for reduce metal ions to form nanoparticles.
The result of small angle X-ray scattering (SAXS) indicates that the mesostructure of as-synthesized silica thin film is 2D-hexagonal, p6mm. In additional, the UV-vis spectrum (UV-vis), Fourier transfo-rm infrared spectroscopy (FT-IR), transmission electron microscopy (TEM) and thermogravimetry analyzer (TGA) were used as charact- errrization instruments. The TEM images show the pore to pore length of mesostructure was ca. 3.0 nm, and the HRTEM images show the diameter of nanoparticles of platinum and ruthenium were ca.1.8 nm and 1.7 nm pack closely and uniformly in mesostructu-re of the PSS.
The Linear Sweep Voltammetry (LSV) was used in the hydrogen evolution reaction in the study to Investigate the catalytic active of metal NPs@PSS. When the sample loading is 7.65 mg/cm2, the current density is 163 mA/cm2, tafel slop is 33.2 mV/decade, and the current density was increased from 160 mA/cm2 to 164 mA
/cm2 after 1000 cycles, the result of high chemical stability of
this Material.
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