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Zinc Tetrakis (4-Carboxyphenyl) Porphyrin Intercalation Modification in CoAl-Layered Double Hydroxides for Efficient
Taihua Lu1, Yucheng Feng1, Jiawei Ye1
1State Key Laboratory of Green and Efficient Development of Phosphorus Resources, Key Laboratory of Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan, P. R. China.
Abstract:
In order to enhance the light absorption capacity and promote the interlayer electron transport of CoAl-layered double hydroxides (CoAl-LDHs), a composite material of Zinc tetrakis (4-carboxyphenyl) porphyrin (ZnTCPP) intercalated into CoAl-LDHs interlayer was prepared by the exfoliation and re-stacking method. The optimized composite exhibited excellent performance toward photocatalytic CO2 reduction to CO, with an average CO evolution rate of 57.2 μmol·g-1·h-1, which was 5.84 times and 2.87 times higher than those of pristine CoAl-LDHs (9.8 μmol·g-1·h-1) and ZnTCPP (19.9 μmol·g-1·h-1), respectively. It is found that the intercalated ZnTCPP in CoAl-LDHs could greatly improve the light absorption capacity and promote the interlayer electron transport, resulting in high photocatalytic CO2 reduction performance.
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