CoFe2O4/MoS2@Au: Multifunction Z-Scheme Heterojunction for SERS Monitoring and Photocatalytic Degradation of Fungicides

IF 2.5 4区工程技术 Q3 CHEMISTRY, ANALYTICAL Separations Pub Date : 2023-09-28 DOI:10.3390/separations10100526

Qirong Dong, Qingyi Wei, Hongbin Pu

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Abstract

Efficient detection and degradation of fungicides are greatly concerned with aquatic food safety. Herein, a multifunction CoFe2O4/MoS2@Au (ACMS) composite was synthesized for crystal violet (CV) and malachite green (MG) photocatalytic degradation and SERS determination. As the construction of the Z-scheme heterostructure of ACMS, which enhanced the light absorption capability and the separation efficiency of photoexcited carrier significantly, ACMS possessed an excellent photocatalytic performance with a degradation rate of 94.76% for CV under simulated solar light irradiation. Furthermore, the multifunction ACMS exhibited superior SERS capability with a detection limit (LOD) of 4.309 × 10−2 μg L−1 for MG residues in water. And the ACMS substrates could be utilized to determine the MG residues in crucian carp extract, resulting in a recovery rate of 96.00~116.00%. In addition, such multifunction heterojunctions were performed for in situ monitoring of the photodegradation process. This research opened up a novel perspective on the applications of heterojunction-based multifunction materials for food safety control.

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CoFe2O4/MoS2@Au:多功能Z-Scheme异质结用于SERS监测和光催化降解杀菌剂

杀菌剂的高效检测与降解关系到水产食品安全。本文合成了一种多功能CoFe2O4/MoS2@Au (ACMS)复合材料，用于结晶紫(CV)和孔雀石绿(MG)的光催化降解和SERS测定。由于ACMS的z型异质结构的构建，显著增强了ACMS的光吸收能力和光激发载流子的分离效率，ACMS在模拟太阳光照下对CV的降解率达到94.76%，具有优异的光催化性能。此外，多功能ACMS对水中MG残留的检测限(LOD)为4.309 × 10−2 μg L−1，具有良好的SERS检测能力。ACMS底物可用于测定鲫鱼提取物中MG的残留量，回收率为96.00~116.00%。此外，这种多功能异质结被用于光降解过程的原位监测。本研究为异质结多功能材料在食品安全控制中的应用开辟了新的前景。

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来源期刊

Separations Chemistry-Analytical Chemistry

CiteScore

3.00

自引率

15.40%

发文量

342

审稿时长

12 weeks

期刊介绍： Separations (formerly Chromatography, ISSN 2227-9075, CODEN: CHROBV) provides an advanced forum for separation and purification science and technology in all areas of chemical, biological and physical science. It publishes reviews, regular research papers and communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. There are, in addition, unique features of this journal: Manuscripts regarding research proposals and research ideas will be particularly welcomed. Electronic files and software regarding the full details of the calculation and experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. Manuscripts concerning summaries and surveys on research cooperation and projects (that are funded by national governments) to give information for a broad field of users. The scope of the journal includes but is not limited to: Theory and methodology (theory of separation methods, sample preparation, instrumental and column developments, new separation methodologies, etc.) Equipment and techniques, novel hyphenated analytical solutions (significantly extended by their combination with spectroscopic methods and in particular, mass spectrometry) Novel analysis approaches and applications to solve analytical challenges which utilize chromatographic separations as a key step in the overall solution Computational modelling of separations for the purpose of fundamental understanding and/or chromatographic optimization