Zn phthalocyanine/carbon nitride heterojunction for visible light photoelectrocatalytic conversion of CO 2 to methanol
Author Identifier
Hongqi Sun
https://orcid.org/0000-0003-0907-5626
Document Type
Journal Article
Publication Title
Journal of Catalysis
Publisher
Academic Press Inc.
School
School of Engineering
RAS ID
30556
Grant Number
ARC Number : DP170104264
Abstract
Zinc phthalocyanine/carbon nitride nanosheets photoelectrocatalysts were obtained by evaporation and calcination of the mixture of ZnPc and carbon nitride. It exhibits highly efficient synergistic function between PC-CO2 RR and EC-CO2 RR. The energy band matching between the ZnPc and carbon nitride results in the faster electrons transfer and less electron-hole pairs recombination. The optimized ZnPc/carbon nitride at a ratio of 0.1 wt% demonstrates high efficiency in photoelectrocalytic reduction of CO2 under visible light, generating a major product of methanol at a yield of 13 μmol·cm −2 after 8 h. The efficiency of photoelectrocalytic reduction of CO2 to methanol is 2.6 times as high as that of electrocatalytic CO2 reduction reaction, and 5.9 times as high as that of photocatalytic CO2 reduction reaction. The mechanism of the photoelectrocatalytic CO2 reduction reaction to methanol was discussed in detail.
DOI
10.1016/j.jcat.2019.01.022
Access Rights
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Comments
Zheng, J., Li, X., Qin, Y., Zhang, S., Sun, M., Duan, X., . . . Wang, S. (2019). Zn phthalocyanine/carbon nitride heterojunction for visible light photoelectrocatalytic conversion of CO2 to methanol. Journal of Catalysis, 317. 214-223.
https://doi.org/10.1016/j.jcat.2019.01.022