Engineering structural defects into a covalent organic framework for enhanced photocatalytic activity

Jixian Wang, Xin Xin Tian, Lei Yu, David J. Young, Wen Bao Wang, Hai Yan Li, Hong Xi Li

Research output: Contribution to journalArticlepeer-review

Abstract

Defect engineering is a promising methodology for modulating the electronic and band structure of semiconductive materials. A series of covalent organic frameworks, designated TAPT-COF-X (X = mole equivalents of modulator 3,5-dimethylbenzaldehyde relative to three equivalents of linker) for water-splitting have been prepared bearing a controlled proportion of structural defects. These defects significantly enhanced photocatalytic H2 production. Hydrogen evolution rates of 33 910 μmol g-1 h-1 were achieved, with the maximum H2 evolution rate for TAPT-COF-7 2.3 times that of parent TAPT-COF. Time-resolved fluorescence measurements and electrochemical impedance spectroscopy indicated that TAPT-COF-7 also possessed the highest charge separation efficiency.

Original languageEnglish
Pages (from-to)25474-25479
Number of pages6
JournalJournal of Materials Chemistry A
Volume9
Issue number45
DOIs
Publication statusPublished - 7 Dec 2021

Fingerprint

Dive into the research topics of 'Engineering structural defects into a covalent organic framework for enhanced photocatalytic activity'. Together they form a unique fingerprint.

Cite this