Flower-like Z-scheme heterostructure of cobalt porphyrin/ZnIn2S4 for boosting photocatalytic solar fuel production

被引：7
作者：
Qi Y. [1 ]
Li S. [1 ]
Bao T. [1 ]
She P. [1 ,2 ]
Rao H. [1 ]
Qin J.-S. [1 ]
机构：
[1] State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, International Center of Future Science, Jilin University, 2699 Qianjin Street, Changchun
[2] State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun
来源：
Applied Catalysis B: Environmental | 2024年 / 357卷
基金：
中国国家自然科学基金;
关键词：
Carbon dioxide reduction; Cobalt porphyrin; Photocatalysis; Z-scheme; ZnIn[!sub]2[!/sub]S[!sub]4[!/sub;
D O I：
10.1016/j.apcatb.2024.124299
中图分类号：
学科分类号：
摘要：
Molecular catalysts have attracted significant attention in photocatalytic CO2 reduction (PCR) due to well-defined structure and exceptional catalytic selectivity. However, they are still limited by recycling challenges and inherent instability. Forming an organic-inorganic composite can address these issues and enhance PCR performance simultaneously. Herein, we developed a flower-like Z-scheme heterojunction of cobalt porphyrin ([meso-tetra(4-sulfonatophenyl)porphyrin], CoTPPS) and ZnIn2S4 (ZIS). The optimized ZIS@CoTPPS exhibited a superior CO evolution rate of 388.26 μmol g−1 h−1, which is 8.96 times of pristine ZIS (43.32 μmol g−1 h−1). The superior PCR activity is contributed by the enhanced light absorption, and photoinduced charge separation facilitated by the Z-scheme structure and the cobalt active sites. Moreover, theoretical calculations confirm the heterojunction relies on a substantial interfacial coupling between the Zn atoms of ZIS and the sulfonic acid groups of CoTPPS through coordination assembly. This investigation affords a useful inspiration for consciously constructing novel ZIS-incorporated atomistic Z-scheme photocatalysts. © 2024 Elsevier B.V.
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