Regulating local electron transfer environment of covalent triazine frameworks through F,N co-modification towards optimized oxygen reduction reaction  

作　　者：Quanyou Guo Yue Yang Tingting Hu Hongqi Chu Lijun Liao Xuepeng Wang Zhenzi Li Liping Guo Wei Zhou 

机构地区：[1]Shandong Provincial Key Laboratory of Molecular Engineering,School of Chemistry and Chemical Engineering,Qilu University of Technology(Shandong Academy of Sciences),Ji’nan 250353,China

出　　处：《Chinese Chemical Letters》2025年第1期344-348,共5页中国化学快报(英文版)

基　　金：the financial support by the National Natural Science Foundation of China(Nos.22205124,52172206);Natural Science Foundation of Shandong province(Nos.ZR2021QB070,ZR2023QB110);Basic Research Projects for the Pilot Project of Integrating Science and Education and Industry of Qilu University of Technology(Shandong Academy of Sciences)(Nos.2023PY024,2023PX108);Special Fund for Taishan Scholars Project;the Development Plan of Youth Innovation Team in Colleges and Universities of Shandong Province。

摘　　要：The high conductivity of electrocatalyst can eliminate the Schottky energy barrier at the interface of heterogeneous phases during an electrocatalytic reaction and accelerate the rapid electron transfer to the catalytic active center.Therefore,the electronic conductivity is a vital parameter for oxygen reduction reaction(ORR).Covalent triazine frameworks(CTFs)have shown great potential application as electrocatalysts in ORR with a merit of the diverse building blocks.However,the intrinsic low conductivity and high impedance of CTFs could be significant setbacks in electrocatalytic application.Herein,CTFs were constructed by introducing F and N co-modification for efficient 2e^(-)ORR.Compared with the pristine CTF,the co-presence of F,N could increase the conductivity obviously by 1000-fold.As a result,F-N-CTF exhibits enhanced catalytic performance of H_(2)O_(2)generation and selectivity towards reaction pathways.This work reveals the importance of conductivity optimization for CTFs and provides guidance for designing high conductivity non-metallic organic semiconductor catalysts for 2e^(-)ORR.

关 键 词：Covalent triazine frameworks CONDUCTIVITY Co-modification ELECTROCATALYSIS Oxygen reduction reaction 

分 类 号：O64[理学—物理化学]