Novel g-C3N4@CaCO3 nanocomposite for excellent methylene blue adsorption and photocatalytic removal under visible light irradiation

IF 5.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Inorganic Chemistry Communications Pub Date : 2025-02-01 Epub Date: 2024-12-01 DOI:10.1016/j.inoche.2024.113685

Gang Huang, Danlin Zeng, Mengcheng Wei, Yang Chen, Aoxue Ma

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Abstract

It is well known that the resource utilization of renewable biomass waste is one of the feasible strategies to reduce environmental pollutants. In this study, a novel composite photocatalyst (g-C₃N₄@CaCO₃) was successfully designed and synthesized using a simple calcination method. The precursors of the composite were mainly melamine and waste eggshells. The prepared g-C₃N₄@CaCO₃ composite catalyst showed excellent photocatalytic degradation activity for methylene blue (MB) in wastewater. Compared with pure g-C₃N₄, the g-C₃N₄@CaCO₃ composite photocatalysts exhibited remarkably enhanced adsorption and catalytic degradation performance for MB removal under visible light irradiation. The improved catalytic performance of the g-C₃N₄@CaCO₃ photocatalyst can be attributed to alterations in the morphology and the formation of cyano defects, which facilitate the absorption and utilization of visible light, as well as the separation of photogenerated carriers. This work provides a strategy to develop a novel g-C₃N₄@CaCO₃ photocatalyst with enhanced performance for efficient treatment of dyeing wastewater.

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新型g-C3N4@CaCO3纳米复合材料在可见光照射下具有优异的亚甲基蓝吸附和光催化去除效果

众所周知，对可再生生物质废弃物进行资源化利用是减少环境污染物的可行策略之一。本研究成功设计并合成了一种新型复合光催化剂（g-C3N4@CaCO3），采用简单的煅烧方法。该复合材料的前体主要是三聚氰胺和废蛋壳。制备的g-C3N4@CaCO3复合催化剂对废水中的亚甲基蓝（MB）具有良好的光催化降解活性。与纯g-C3N4相比，g-C3N4@CaCO3复合光催化剂在可见光照射下对MB的吸附和催化降解性能显著增强。g-C3N4@CaCO3光催化剂的催化性能的提高可归因于形态的改变和氰基缺陷的形成，这有利于可见光的吸收和利用，以及光生载体的分离。这项工作为开发一种新型g-C3N4@CaCO3光催化剂提供了一种策略，该催化剂具有增强的性能，可用于高效处理印染废水。

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来源期刊

Inorganic Chemistry Communications 化学-无机化学与核化学

CiteScore

5.50

自引率

7.90%

发文量

1013

审稿时长

53 days

期刊介绍： Launched in January 1998, Inorganic Chemistry Communications is an international journal dedicated to the rapid publication of short communications in the major areas of inorganic, organometallic and supramolecular chemistry. Topics include synthetic and reaction chemistry, kinetics and mechanisms of reactions, bioinorganic chemistry, photochemistry and the use of metal and organometallic compounds in stoichiometric and catalytic synthesis or organic compounds.