Photothermal reverse water gas shift(RWGS)catalysis holds promise for efficient conversions of greenhouse gas CO_(2) and renewable H_(2),powered solely by sunlight,into CO,an important feedstock for the chemical indus...Photothermal reverse water gas shift(RWGS)catalysis holds promise for efficient conversions of greenhouse gas CO_(2) and renewable H_(2),powered solely by sunlight,into CO,an important feedstock for the chemical industry.However,the performance of photothermal RWGS catalysis over existing supported catalysts is limited by the balance between the catalyst loading and dispersity,as well as stability against sintering.Herein,we report a core-shell strategy for the design of photothermal catalysts,by using Ni1_(2)P_(5) as an example,with simultaneously strong light absorption ability,high dispersity and stability.The core-shell structured Ni1_(2)P_(5)@SiO_(2) catalyst with a relatively small Ni1_(2)P_(5) particle size of 15 nm at a high Ni1_(2)P_(5) loading of 30 wt%exhibits improved activity,nearly 100%CO selectivity,and superior stability in photothermal RWGS catalysis,particularly under intense illuminations.Our study clearly reveals the effectiveness of the core-shell strategy in breaking the limitation of supported catalysts and boosting the performance of photothermal CO_(2) catalysis.展开更多
基金financially supported by the National Natural Science Foundation of China (51802208, 51920105005, 21902113, 51821002 and 91833303)the Natural Science Foundation of Jiangsu Province (BK20200101)the Collaborative Innovation Centre of Suzhou Nano Science & Technology, and the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)the Natural Sciences and Engineering Council of Canada for support of this work
文摘Photothermal reverse water gas shift(RWGS)catalysis holds promise for efficient conversions of greenhouse gas CO_(2) and renewable H_(2),powered solely by sunlight,into CO,an important feedstock for the chemical industry.However,the performance of photothermal RWGS catalysis over existing supported catalysts is limited by the balance between the catalyst loading and dispersity,as well as stability against sintering.Herein,we report a core-shell strategy for the design of photothermal catalysts,by using Ni1_(2)P_(5) as an example,with simultaneously strong light absorption ability,high dispersity and stability.The core-shell structured Ni1_(2)P_(5)@SiO_(2) catalyst with a relatively small Ni1_(2)P_(5) particle size of 15 nm at a high Ni1_(2)P_(5) loading of 30 wt%exhibits improved activity,nearly 100%CO selectivity,and superior stability in photothermal RWGS catalysis,particularly under intense illuminations.Our study clearly reveals the effectiveness of the core-shell strategy in breaking the limitation of supported catalysts and boosting the performance of photothermal CO_(2) catalysis.
