Magnetic optimizing surface-enhanced Raman scattering (SERS) strategy of detection and in-situ monitoring of photodegradation of Benzo[a]pyrene in water

Qinyi Li; Qiangting Zheng; Jiangli Shi; Yu Yan; Xiaoyu Guo; Haifeng Yang

doi:10.1016/j.aca.2024.343466

Magnetic optimizing surface-enhanced Raman scattering (SERS) strategy of detection and in-situ monitoring of photodegradation of Benzo[a]pyrene in water

Anal Chim Acta. 2025 Jan 22:1336:343466. doi: 10.1016/j.aca.2024.343466. Epub 2024 Nov 22.

Authors

Qinyi Li¹, Qiangting Zheng¹, Jiangli Shi¹, Yu Yan¹, Xiaoyu Guo², Haifeng Yang³

Affiliations

¹ The Education Ministry Key Laboratory of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, Shanghai Frontiers Science Center of Biomimetic Catalysis and College of chemistry and materials science, School of Environmental and Geographical Sciences. Shanghai Normal University, Shanghai, 200234, People's Republic of China.
² The Education Ministry Key Laboratory of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, Shanghai Frontiers Science Center of Biomimetic Catalysis and College of chemistry and materials science, School of Environmental and Geographical Sciences. Shanghai Normal University, Shanghai, 200234, People's Republic of China. Electronic address: gxy2012@shnu.edu.cn.
³ The Education Ministry Key Laboratory of Resource Chemistry, Joint International Research Laboratory of Resource Chemistry, Ministry of Education, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Municipal Education Committee Key Laboratory of Molecular Imaging Probes and Sensors, Shanghai Frontiers Science Center of Biomimetic Catalysis and College of chemistry and materials science, School of Environmental and Geographical Sciences. Shanghai Normal University, Shanghai, 200234, People's Republic of China. Electronic address: hfyang@shnu.edu.cn.

PMID: 39788651
DOI: 10.1016/j.aca.2024.343466

Abstract

Background: Polycyclic aromatic hydrocarbons (PAHs) are one of the most dangerous persistent organic pollutants in the environment. Due to the discharge of chemical plants and domestic water, the existence of PAHs in sea water and lake water is harmful to human health. A method for rapid detection and removal of PAHs in water needs to be developed.

Results: In this work, we fabricate Fe₃O₄ wrapped with gold nanoparticles decorated graphene oxide composite nanomaterial (Fe₃O₄/GO/Au). Excellent magnetism of Fe₃O₄ provides a means to enrich and separate the PAHs from substrates, which effectively improve the selectivity and avoid the coffee ring effect in traditional SERS detection. Fe₃O₄/GO/Au shows great response to PAHs owing to the π-π electronic interaction between PAHs and GO, and through the calculation of Material Studio, it is confirmed that GO has different adsorption capacity for polycyclic aromatic hydrocarbons with different number of benzene rings. The limit of detection (LOD) of Benzo[a]pyrene (BaP) can reach 3.8 μg⋅L^-1 and other PAHs can also be detected at μg⋅L^-1 level. Gold nanoparticles demonstrate prominent light absorption within the visible spectrum and are characterized by their localized surface plasmon resonance (LSPR) properties. Meanwhile, Au NPs facilitate electron migration and carrier separation of GO. Owing to the synergistic interplay, the composite system Fe₃O₄/GO/Au exhibits the capability for SERS sensitive detection and photocatalytic degradation of BaP under visible light irradiation, realizing in-situ monitor the photodegradation of BaP in water.

Significance and novelty: A rapid and accurate quantitative method is established for the detection and removal of PAHs in water, which is intended to provide new strategy for the quantitative analysis and removal of water environmental pollution.

Keywords: BaP; PAHs; Photocatalytic; Rapid detection; SERS.