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采用浸渍-氢气还原法制备了RuO2/Ru/TiO2光催化剂,并采用XRD、SEM、UV-vis漫反射光谱和荧光光谱(FS)等手段对样品进行了表征,以草酸为电子给体,研究了RuO2的负载量对P25-TiO2光催化产氢活性的影响。结果表明,P25-TiO2表面负载RuO2大大地提高了其光催化产氢速度,模拟太阳光下2wt%负载量下达到最佳产氢活性,6h内的产氢量达到45mmol。
The RuO2 / Ru / TiO2 photocatalyst was prepared by impregnation-hydrogen reduction method. The samples were characterized by XRD, SEM, UV-vis diffuse reflectance spectroscopy and fluorescence spectroscopy. With oxalic acid as electron donor, Effect of RuO2 loading on photocatalytic hydrogen evolution of P25-TiO2. The results showed that the RuO2 loading on the surface of P25-TiO2 greatly increased the photocatalytic H2 production rate, and reached the optimum hydrogen production activity under 2wt% loading under simulated sunlight. The hydrogen production reached 45mmol within 6h.