Effect of precursors on the structure and photocatalytic performance of g-C_(3)N_(4) for NO oxidation and CO_(2) reduction  

作　　者：Liang Ma Zhou Li Zhiqiang Jiang Xiaofeng Wu Shixin Chang Sónia A.C.Carabineiro Kangle Lv 

机构地区：[1]College of Resources and Environment,South-Central Minzu University,Wuhan,430074,China [2]School of Chemical Engineering,East China University of Science and Technology,Shanghai,200237,China [3]School of Chemical and Environmental Engineering,Wuhan Polytechnic University,Wuhan,430023,China [4]LAQV-REQUIMTE,Department of Chemistry,NOVA School of Science and Technology,Universidade NOVA de Lisboa,Caparica,2829-516,Portugal

出　　处：《Chinese Journal of Structural Chemistry》2024年第11期27-36,共10页结构化学(英文)

基　　金：supported by the National Natural Science Foundation of China(51672312);Hubei Provincial Natural Science Foundation and Huangshi of China(2022CFD001);The Fundamental Research Funds for the Central Universities of South-Central Minzu University(CZP22001);the Fund for Academic Innovation Teams of South-Central Minzu University(XTZ24019);Portuguese Foundation for Science and Technology/Ministry of Science and Technology and Higher Teaching(FCT/MCTES).

摘　　要：Graphitic carbon nitride(g-C_(3)N_(4),CN)is recognized as the most extensively studied organic polymeric photo-catalyst for pollution control and energy conversion due to its facile synthesis and suitable electronic band structure.The aim of the present work is to explore the effect of precursors,such as urea(U,(NH_(2))_(2)CO),dicyandiamide(D,C_(2)H_(4)N_(4))and melamine(M,C_(3)H_(6)N_(6)),on the structure and photocatalytic activity of the ob-tained CN samples,denoted as UCN,DCN and MCN,respectively.The sheet-like UCN sample shows significantly enhanced photoreactivity in both NO oxidation and CO_(2)reduction compared to the bulk DCN and MCN materials.In addition,UCN demonstrates the ability to suppress the formation of toxic NO_(2)intermediate during the photocatalytic oxidation of NO.The improved photocatalytic activity of UCN can be attributed to a dual effect:first,its increased specific surface area provides more active sites for the photocatalytic reaction;second,it ex-hibits a stronger affinity for substrates like NO and CO_(2),which facilitates charge migration at the interface.

关 键 词：Graphitic carbon nitride Photocatalytic NO oxidation Photocatalytic CO_(2)reduction UREA 

分 类 号：O62[理学—有机化学]