g-C3Nx@CN composite preparation and its photocatalytic degradation property under visible light

g-C3Nx@CN composite preparation and its photocatalytic degradation property under visible light

A photocatalyst g-C3Nx@CN with defective carbon nitride （g-C3Nx） encapsulated by CN shells is prepared by in-situ growth and high-temperature dezincification. The structural， morphological， and compositional characterization of g-C3Nx@CN has been analyzed and characterized by various analytical mean...

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Bibliographic Details
Main Authors: ZHU Yiren, HE Chunpeng, NIE Xuetong, GAO Zhong, LI Ying
Format: Article
Language:zho
Published: Journal of Materials Engineering 2025-05-01
Series:Cailiao gongcheng
Subjects:
g-c3nx
zif-8
photocatalysis
degradation
methylene blue
2，4-dcp
Online Access:https://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2024.000080
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Summary:A photocatalyst g-C3Nx@CN with defective carbon nitride （g-C3Nx） encapsulated by CN shells is prepared by in-situ growth and high-temperature dezincification. The structural， morphological， and compositional characterization of g-C3Nx@CN has been analyzed and characterized by various analytical means. First， g-C3Nx with nitrogen defects is prepared by high-temperature polycondensation of melamine and high-temperature denitration of Mg powder， followed by in-situ growth of ZIF-8 by loading ZnO nanoparticles. Finally， g-C3Nx@ZIF-8 is dezincified at high temperature， and the CN shell-encapsulated visible light catalyst material g-C3Nx@CN with double defects （N， Zn） with ZIF-8 is prepared. The study demonstrates that the g-C3Nx@CN catalyst exhibits strong visible photocatalytic activity and effectively degrades methylene blue and 2，4-dichlorophenol within 240 min， with the best performance of the g-C3Nx@CN-5∶4 composite. The single linear oxygen （1O2） plays a dominant role in the reaction system. In the cycle test， the g-C3Nx@CN shows excellent recycling and light stability. This study extends the study of defective carbon nitride materials in visible light absorption and provides a viable method for the derivation of metal catalysts to inorganic non-metal catalysts.
ISSN:1001-4381

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