【摘 要】
：
Photocatalytic reduction of CO2 was carried out on villiform spherical catalysts of Pd-TiO2 in isopropanol solution.The catalysts were synthesized by hydrothermal method,their structures,morphologies and optical absorption properties were characterized by
【机 构】
：
Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion,School of Chemistry and C
【出 处】
：
武汉理工大学学报（材料科学版）（英文版）
论文部分内容阅读
Photocatalytic reduction of CO2 was carried out on villiform spherical catalysts of Pd-TiO2 in isopropanol solution.The catalysts were synthesized by hydrothermal method,their structures,morphologies and optical absorption properties were characterized by X-ray diffraction(XRD),energy dispersive X-ray spectroscopy(EDS),scanning electron microscopy(SEM),transmission electron microscopy(TEM),highresolution transmission electron microscopy(HRTEM)and UV-vis absorption spectroscopy(UV-vis).The photocatalytic activities with different loading amounts and morphologies were evaluated for determining the dominant effect and optimizing the catalyst preparation.Based on a villiform spherical TiO2 with the largest specific surface area in our experiments,we prepared a set of catalysts with various loading amounts of palladium and tested them by bubbling CO2 through the slurry of catalyst and isopropanol.The highest formation rate of isopropyl formate was 276.6 μmol/g·cat/h.Eventually we proposed the reaction mechanism.
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