化工新型材料

化工新型材料 ›› 2025, Vol. 53 ›› Issue (4) : 200-205. DOI: 10.19817/j.cnki.issn1006-3536.2025.04.024

科学研究

Co₃O₄/g-C₃N₄复合材料的制备及其光催化性能

汤春妮

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Synthesis and photocatalytic properties of Co₃O₄/g-C₃N₄ composite

Tang Chunni

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Received		Published
2024-04-01		2025-04-20
Issue Date	Revised Date
2025-04-21	2024-04-01

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摘要

采用原位煅烧法制备了四氧化三钴/石墨相氮化碳(Co₃O₄/g-C₃N₄)复合材料,利用XRD、FT-IR、SEM、TEM、UV-Vis、XPS和PL等进行表征。在模拟太阳光下,Co₃O₄/g-C₃N₄复合材料光催化清除罗丹明B(RhB)的性能显著优于g-C₃N₄和Co₃O₄,最优的1% Co₃O₄/g-C₃N₄在60min内RhB清除率达93%。原位生成的Co₃O₄纳米粒子在g-C₃N₄表面形成异质结构,有助于光生载流子的转移和迁移、降低光生e^--h⁺对复合率、提升光吸收,是复合材料光催化性能增强的主要原因。

Abstract

The Co₃O₄/g-C₃N₄ composite was prepared by in-situ calcination method and characterized by XRD,FT-IR,SEM,TEM,UV-Vis,XPS and PL.Compared with g-C₃N₄ and Co₃O₄,Co₃O₄/g-C₃N₄ exhibited significantly better performance for the photocatalytic removal of Rhodamine B (RhB) under simulated sunlight irradiation.The photocatalytic removal rate of RhB within 60min was 93% on the optimal photocatalyst (1% Co₃O₄/g-C₃N₄).The in-situ generated Co₃O₄ nanoparticles formed heterostructures on the surface of g-C₃N₄,which facilitated the transfer and migration of photogenerated carriers,reduced the photogenerated e^--h⁺ pair recombination rate,and improved the light absorption.These factors were main reasons for the enhanced photocatalytic performance of the composite.

关键词

石墨相氮化碳 / 四氧化三钴 / 光催化

Key words

graphitic carbon nitride / Co₃O₄ / photocatalysis

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Co₃O₄/g-C₃N₄复合材料的制备及其光催化性能[J]. 化工新型材料, 2025, 53(4): 200-205 DOI:10.19817/j.cnki.issn1006-3536.2025.04.024

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