Simulating photosynthesis to convert CO_(2)into valuable chemicals is an effective strategy to achieve sustainable carbon recycles,and the high conversion efficiency and selectivity of photocatalytic conversion CO_(2)...Simulating photosynthesis to convert CO_(2)into valuable chemicals is an effective strategy to achieve sustainable carbon recycles,and the high conversion efficiency and selectivity of photocatalytic conversion CO_(2)to specific chemicals are the key challenges.Herein,a direct Z-scheme Bi_(2)WO_(6)/La_(2)Ti_(2)O_(7)photocatalyst is successfully syn-thesized by electrostatic self-assembly method.The selectivity of CO_(2)reduction to CO is improved from 74%of La_(2)Ti_(2)O_(7)to nearly 100%,and the CO yield is 7.5 times that of individual La_(2)Ti_(2)O_(7).The improvement of the photocatalytic performance is attributed to the formation of Z-scheme heterojunction between Bi_(2)WO_(6)and La_(2)Ti_(2)O_(7),which facilitates the separation and transfer of photogenerated carriers.This work provides a new insight for the construction of efficient photocatalyst for selective reduction of CO_(2)to CO.展开更多
基金supported by the National Natural Science Foundation of China(21972020 and 22172031)the Natural Science Foundation of Fujian Province(2021L3003)
文摘Simulating photosynthesis to convert CO_(2)into valuable chemicals is an effective strategy to achieve sustainable carbon recycles,and the high conversion efficiency and selectivity of photocatalytic conversion CO_(2)to specific chemicals are the key challenges.Herein,a direct Z-scheme Bi_(2)WO_(6)/La_(2)Ti_(2)O_(7)photocatalyst is successfully syn-thesized by electrostatic self-assembly method.The selectivity of CO_(2)reduction to CO is improved from 74%of La_(2)Ti_(2)O_(7)to nearly 100%,and the CO yield is 7.5 times that of individual La_(2)Ti_(2)O_(7).The improvement of the photocatalytic performance is attributed to the formation of Z-scheme heterojunction between Bi_(2)WO_(6)and La_(2)Ti_(2)O_(7),which facilitates the separation and transfer of photogenerated carriers.This work provides a new insight for the construction of efficient photocatalyst for selective reduction of CO_(2)to CO.
