物理化学学报2024，Vol.40Issue(10)：58-60,3.DOI:10.3866/PKU.WHXB202312014
AuCu双金属合金修饰共价有机框架用于高效光催化析氢
Bimetallic AuCu Alloy Decorated Covalent Organic Frameworks for Efficient Photocatalytic Hydrogen Production
摘要
Abstract
Covalent organic frameworks(COFs)represent a kind of novel crystalline porous organic substances with extended π-conjugation framework and tunable structures,which display great promise in photocatalysis.However,unadorned COFs suffer from sluggish reaction kinetics,and a cocatalyst is essentially needed to reduce the activation barrier toward specific surface reaction and accelerate reaction kinetics.In this work,bimetallic alloys serving as co-catalysts were decorated on COFs to enhance the photocatalytic hydrogen evolution performance.By precisely-tuning the ratio of AuCu alloy,the resultant Au1Cu5/COF-TpPa displays the highest photocatalytic hydrogen generation rate(8.24 mmol·g-1·h-1),even surpassing the Pt modified COF-TpPa(6.51 mmol·h-1·g-1).According to the systematic characterizations and theoretical calculation,Au1Cu5/COF-TpPa exhibits the significantly enhanced charge carrier separation efficiency and reduced H* formation energy barrier,thus possessing high photocatalytic performance.This work affords a valuable approach to advancing COF-based photocatalysts by employing bimetallic alloy cocatalysts.关键词
光催化/析氢/共价有机框架/双金属助催化剂Key words
Photocatalysis/H2 generation/Covalent organic framework/Bimetallic cocatalyst分类
化学化工引用本文复制引用
杨文秀,张金锋,徐全龙,杨云,张礼杰..AuCu双金属合金修饰共价有机框架用于高效光催化析氢[J].物理化学学报,2024,40(10):58-60,3.基金项目
The project was supported from the National Natural Science Foundation of China(52073263,52171145,21905209).国家自然科学基金(52073263,52171145,21905209)资助项目 （52073263,52171145,21905209）
