【摘要】 实验室前期搭建太阳能有序转化系统，利用太阳辐射高频波段合成碳氢燃料，低频波段转化为高品质热能。基于该系统，制备Au和MgO负载的TiO₂球壳材料，进行光热协同反应转化CO₂和H₂O，同时结合集热层利用导热油集热，结果表明，H₂、CH₄、CO产量分别为30.1、3.2、30.9μmol/g，系统集热效率可达39.85%。实验结合表征显示，球壳结构、Au和MgO共负载可提高材料光吸收，增强光热性能，降低电子空穴对复合率，产生氧空位，促进光热协同反应还原CO₂。更多还原

【Abstract】 The solar energy orderly conversion system has been set up to synthesize hydrocarbon fuel with the high-frequency solar radiation and the low-frequency part is converted into high temperature thermal energy.Based on this system,TiO₂spherical shell materials loaded with Au and MgO are prepared to transform CO₂and H₂O through photothermal chemical reaction,and thermal of heat-collection layer is collected by thermal oil.The results show that H₂,CH₄and CO yield are 30.1,3.2 and 30.9μmol/g respectively,and the heat collection efficiency of the system is 39.85%.The characterization results indicate that the spherical shell structure,Au and MgO co-loading improves the light absorption,enhances the photothermal properties,reduces the recombination rate of electron hole pair,generates oxygen vacancies,and promotes the photothermal chemical reaction to reduce CO₂.更多还原