| 초록 |
Photochemical solution-phase reactions have been widely used for loading co-catalyst Platinum (Pt) on graphitic carbon nitride (g-C3N4) for H2 evolution application. Recently, increasing focus has been placed on optimizing the growth and nucleation of nanoparticles in solids state by using the iced-photochemical reduction, which could prevent the aggregation of Pt atoms. Here in, we demonstrate a facile method to generate the Pt atoms utilization from nanoparticles to atomic metal scale supported on g-C3N4 via photochemical reduction of chloroplatinic acid (H2PtCl6) in g-C3N4 frozen solution by using ultraviolet light irradiation. The Pt atoms utilization via controlling the concentration of H2PtCl6 precursor and UV light intensities. The Pt sizes and Pt oxidation states on g-C3N4 layers are studied by HR-TEM, AFM, STM, XANES analyses. The photocatalytic performance evaluation was measured via an automatic injection, online gas chromatography with a thermal conductive detector, and a Carboxen 1000 column. |
