Competitive assembling strategy to construct carbon nitride homojunctions for boosting photocatalytic performance  

作　　者：Hua-Wei Zhang Yuan-Yuan Li Bo Li Jing-Hui Shi Tao Huang Gui-Fang Huang Anlian Pan Wangyu Hu Wei-Qing Huang 

机构地区：[1]School of Physics&Electronic Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,China [2]Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education&Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices,School of Physics and Electronics,Hunan University,Changsha 410082,China [3]College of Materials Science and Engineering,Hunan University,Changsha 410082,China

出　　处：《Journal of Materials Science & Technology》2024年第5期23-32,共10页材料科学技术（英文版）

基　　金：the National Natural Science Foundation of China(Nos.51772085,12072110);the Natural Science Foundation of Hunan Province(No.2020JJ4190).

摘　　要：Both morphology and composition have a great influence on the properties and functions of materials,however,how to rational modulate both of them to achieve their synergistic effects has been a longstanding expectation.Herein,we demonstrate a competitive assembling strategy for the construction of metal-free graphite carbon nitride(CN)homojunctions in which morphology and composition can be easily controlled simultaneously by only changing the ratio of assembly raw materials.These homojunctions are comprised of porous nanotubular S-doped CN(SCN)grafted with CN nanovesicles,which are derived from thermal polycondensation of melamine-thiocyanuric acid(M-T)/melamine-cyanuric acid(M-C)supramolecular hybrid blocks.This unique architecture and component engineering endows the novel SCN-CN homojunction with abundant active sites,enhanced visible trapping ability,and intimate interface contact.As a result,the synthesized SCN-CN homojunctions demonstrate high photocatalytic activity for hydrogen evolution and pollutant degradation.This developed strategy opens up intriguing opportu-nities for the rational construction of intricate metal-free heterostructures with controllable architecture and interfacial contact for applications in energy-related fields.

关 键 词：Competitive assembling strategy Supramolecular hybrid blocks HOMOJUNCTIONS Graphite carbon nitride Photocatalytic 

分 类 号：TG1[金属学及工艺—金属学]