【作者】 贺学智； 李炳杰； 陈威； 吴志坚； 袁坚；

【Author】 Xuezhi He,Bingjie Li,Wei Chen,Zhijian Wu,Wenfeng Shangguan,Jian Yuan

【机构】 上海交通大学机械与动力学院；

【摘要】 <正>在能源和环境的双重压力下,常温常压下利用太阳能光催化分解水制氢,并进一步光催化氢化还原二氧化碳制备碳氢燃料被认为是具有潜力的未来能源技术之一,相应的高效催化剂材料的设计、制备及其光催化转化过程研究是该技术的关键。层状双羟基复合金属氢氧化物(Layered Double Hydroxides,LDHs)为阴离子层状化合更多还原

【Abstract】 The greenhouse effect has become a threat to the living environment of mankind.The conversion of CO₂ at room temperature and atmospheric pressure using solar light is a highly challenging and promising approach to close the CO₂ cycle,and to develop photosynthesis mimetic approaches.This option requires technologies both to capture CO₂ from the atmosphere and to convert it into fuel.Layered double hydroxides（LDHs） were Zn（Cu）-AI（Ti）-LDHs were synthesized by co-precipitation method,which were applied as photocatalysts to convert gaseous CO₂ and H₂O to carbon fuels under full spectra.Zn-AI-Ti LDH was the most active catalyst for CO₂ photoreduction and the major product was CH₄ and CO,which was online characterized by Gas Chromatography.XRD,SEM,TG-DSC,UV-Vis N2 adsorb-desorption measurements revealed that the prepared LDHs samples possess high crystallinity,hierarchical structure as well as large specific surface.The mechanism of photocatalytic reduction of CO₂ with H₂O over the catalyst samples was investigated.This work demonstrates the potential application of LDHs in the field of photocatalysis.更多还原