Magnetic recoverable cobalt ferrite nanophotocatalyst for Crystal Violet dye degradation

IF 5.6 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2025-09-01 DOI:10.1016/j.ceramint.2025.06.198

Yu Shi Lee, Kian Mun Lee, Boon Hoong Ong

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引用次数: 0

Abstract

Water pollution caused by the release of organic dye waste has created 1.6 million litres of effluent daily, resulting in about 0.28 million tons of dye wastewater discharged annually. This study synthesized magnetic recoverable CoFe₂O₄ (MRCFO) nano photocatalysts via a facile solvothermal route. XRD confirmed the formation of single-phase spinel structures of the synthesized MRCFO, except for commercial MRCFO, where the hematite phase was found. The EG-100 showed the narrowest size distribution due to adding ethylene glycol, which precisely controlled the nucleation and growth process. Moreover, EG-100 achieved the highest recoverability, owing to its high saturation magnetization (68.2 emu/g). The MRCFO was used to photodegrade Crystal Violet dye under UV-light irradiation. It was observed that EG-100 showed the highest degradation rate (2.21 x 10⁻² min⁻¹) and is about 2 times greater than the commercial MRCFO. The excellent photocatalytic activity of EG-100 was due to its slit-open pore structure, which provides the greatest surface area for charge separation. EG-100 retained 53 % of its photoactivity after five cycles. Hence, the magnetic recoverability and chemical stability of MRCFO make it a potential photocatalyst for dye degradation and wastewater treatment.

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磁性可回收钴铁氧体纳米光催化剂用于晶紫染料降解

有机染料废水排放造成的水污染每天产生160万升废水，每年排放约28万吨染料废水。本研究采用简单的溶剂热法合成了磁性可回收的CoFe2O4 （MRCFO）纳米光催化剂。XRD证实，合成的MRCFO除含有赤铁矿相外，其余均为单相尖晶石结构。乙二醇的加入使EG-100的粒径分布最窄，乙二醇的加入精确地控制了成核和生长过程。此外，由于其高饱和磁化强度（68.2 emu/g）， EG-100的回收率最高。利用MRCFO在紫外光照射下对结晶紫染料进行了光降解。结果表明，EG-100的降解率最高（2.21 × 10−2 min−1），是商用MRCFO的2倍。EG-100具有优异的光催化活性是由于其开缝孔结构，为电荷分离提供了最大的表面积。5个循环后，EG-100仍保持53%的光活性。因此，MRCFO的磁性可恢复性和化学稳定性使其成为染料降解和废水处理的潜在光催化剂。

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.