Encapsulatingperovskitequantumdotsinto3DCOFforvisiblelight-drivenCO2reduction<iclass="icon-zqcb"></i>

被引：0

作者：

Xinxin Wang ^{[1
,2
]}

Yucheng Jin ^{[2
]}

Xiya Yang ^{[2
]}

Qingyu Luan ^{[2
]}

Tianyu Wang ^{[2
]}

Dongdong Qi ^{[2
]}

Kang Wang ^{[2
]}

Jianzhuang Jiang ^{[1
,2
]}

机构：

[1] College of Chemistry and Materials Science,Anhui Normal University

[2] Beijing Advanced Innovation Center for Materials Genome Engineering,Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials,Department of Chemistry and Chemical Engineering,School of Chemistry and Biological Eng

来源：

Science China(Chemistry) | 2025年 / 68卷 / 04期

关键词：

D O I：

暂无

中图分类号：

X701 [废气的处理与利用]; O643.36 [催化剂]; O644.1 [光化学];

学科分类号：

083002 ; 081705 ; 070304 ; 081704 ;

摘要：

Lead halide perovskite quantum dots（LHP QDs） have been revealed to possess great potential in photocatalytic applications including CO2 reduction,which however suffer from poor stability.Herein,a high crystalline hydrazine-linked three-dimensional（3D） covalent organic framework,USTB-17,was fabricated from the reaction between 12-connected building block and 4-connected 3,5,7-tetrakis（4-aldophenyl）-adamantane.Post-modification with Ni2+affords the metallic framework USTB-17（Ni）followed by sequential deposition of the CH3NH2PbI3（MAPbI3） perovskite QDs into its pores,generating the USTB-17（Ni）@MAPbI3 composite.Powder X-ray diffraction analysis together with theoretical simulations and transmission electron microscopy discloses the crystalline nature of USTB-17,USTB-17（Ni）,and USTB-17（Ni）@MAPbI3 with an unprecedented noninterpenetrated hpt topology.The close contact of QDs inside the COF pores with the Ni catalytic site locating at the pore surface of COF allows a rapid transfer of the photogenerated electrons in QDs to the Ni catalytic sites,enhancing the photocatalytic activity for CO2reduction.This endows USTB-17（Ni）@MAPbI3 with efficient photocatalysis performance for photocatalytic CO2 reduction with CO generation rate of 365μmol g-1h-1and CO selectivity up to 96% under visible-light irradiation,7 times higher than that of USTB-17（Ni）.After four cycles of reactions,the photocatalytic CO generation rate remains almost unchanged,demonstrating its excellent cycle stability.

引用

页码：1478 / 1485

页数：8