Multifunctional magnetic Fe3O4/Cu2O-Ag nanocomposites with high sensitivity for SERS detection and efficient visible light-driven photocatalytic degradation of polycyclic aromatic hydrocarbons (PAHs)

doi:10.1016/j.jcis.2022.08.036

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	Multifunctional magnetic Fe3O4/Cu2O-Ag nanocomposites with high sensitivity for SERS detection and efficient visible light-driven photocatalytic degradation of polycyclic aromatic hydrocarbons (PAHs)
	J. Huang; T. X. Zhou; W. S. Zhao; S. C. Cui; R. Guo; D. Li; N. R. Kadasala; D. L. Han; Y. H. Jiang; Y. Liu and H. L. Liu
	2022
Source Publication	Journal of Colloid and Interface Science
ISSN	0021-9797
Volume	628 Pages:315-326
Abstract	Polycyclic aromatic hydrocarbons (PAHs) with carcinogenic, teratogenic and mutagenic properties are persistent organic pollutants in the environment. Herein, the novel multifunctional Fe3O4/Cu2O-Ag nanocomposites (NCs) have been established for ultra-sensitive surface-enhanced Raman scattering (SERS) detection and visible light-driven photocatalytic degradation of PAHs. Fe3O4/Cu2O-Ag NCs with different amounts of Ag nanocrystals were synthesized, and the effect of Ag contents on SERS performance was studied by finite-difference time-domain (FDTD) algorithm. The synergistic interplay of electromagnetic and chemical enhancement was responsible for excellent SERS sensitivity of Fe3O4/Cu2O-Ag NCs. The limit of detection (LOD) of optimal SERS substrates (FCA-2 NCs) for Nap, BaP, Pyr and Ant was as low as 10-9, 10-9, 10-9 and 10-10 M, respectively. The SERS detection of PAHs in actual soil environment was also studied. Moreover, a simple SERS method was used to monitor the photocatalytic process of PAHs. The recovery and reuse of Fe3O4/Cu2O-Ag NCs were achieved through magnetic field, and the outstanding SERS and photocatalytic performance were still maintained even after eight cycles. This magnetic multifunctional NCs provide a unique idea for the integration of ultra-sensitive SERS detection and efficient photocatalytic degradation of PAHs, and thus will have more hopeful prospects in the field of environmental protection.(c) 2022 Elsevier Inc. All rights reserved.
DOI	10.1016/j.jcis.2022.08.036
URL	查看原文
Indexed By	sci ; ei
Language	英语
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Document Type	期刊论文
Identifier	http://ir.ciomp.ac.cn/handle/181722/66870
Collection	中国科学院长春光学精密机械与物理研究所
Recommended Citation GB/T 7714	J. Huang,T. X. Zhou,W. S. Zhao,et al. Multifunctional magnetic Fe3O4/Cu2O-Ag nanocomposites with high sensitivity for SERS detection and efficient visible light-driven photocatalytic degradation of polycyclic aromatic hydrocarbons (PAHs)[J]. Journal of Colloid and Interface Science,2022,628:315-326.
APA	J. Huang.,T. X. Zhou.,W. S. Zhao.,S. C. Cui.,R. Guo.,...&Y. Liu and H. L. Liu.(2022).Multifunctional magnetic Fe3O4/Cu2O-Ag nanocomposites with high sensitivity for SERS detection and efficient visible light-driven photocatalytic degradation of polycyclic aromatic hydrocarbons (PAHs).Journal of Colloid and Interface Science,628,315-326.
MLA	J. Huang,et al."Multifunctional magnetic Fe3O4/Cu2O-Ag nanocomposites with high sensitivity for SERS detection and efficient visible light-driven photocatalytic degradation of polycyclic aromatic hydrocarbons (PAHs)".Journal of Colloid and Interface Science 628(2022):315-326.

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中国科学院长春光学精密机械与物理研究所