Rapid detection and mechanistic analysis of 3,4-Benzo(a)pyrene by surface-enhanced Raman scattering
Source abstract
Abstract
In response to the difficulty of adsorbing 3,4-Benzo(a)pyrene (3,4-Bap) molecules onto the surface of precious metal substrates due to their hydrophobicity, a surface-enhanced Raman scattering (SERS) substrate (SD@AuNPs substrate) was constructed with the dual function of adsorption–detection. The substrate is a gold nanoparticle modified by sulfhydryl cyclodextrin, and the hollow cylindrical structure of cyclodextrin lends hydrophobicity to capture the molecule, which is utilized to achieve on-site selective analysis of 3,4-Bap pollutants using the signal changes in SERS spectra. The theoretical simulations and experimental results presented in this paper show that the maximum value of the electromagnetic enhancement property |E/E0| of the substrate reaches 161. Under the synergistic ‘electromagnetic-chemical’ dual enhancement mechanism, the enhancement factor value of the substrate (EFt = 4.87 × 109) was comparable in order of magnitude to the experimental value (EFe = 1.99 × 108). The construction of the SD@AuNPs substrate and its mechanism study provide a theoretical and practical basis for SERS sensing of 3,4-Bap molecules in complex systems.
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Research context
OpenAlex topics: Gold and Silver Nanoparticles Synthesis and Applications · Nanomaterials for catalytic reactions · Melamine detection and toxicity
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Jiangsu Normal University School of Physics and Electronic Engineering, , Xuzhou,
China University of Mining and Technology School of Information and Control Engineering, , Xuzhou, ; Kewen College, Jiangsu Normal University, Xuzhou, China
Jiangsu Normal University School of Chemistry and Materials Science, , Xuzhou,
Jiangsu Normal University School of Physics and Electronic Engineering, , Xuzhou, ; School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou, China
Funding
Natural Science Foundation of Jiangsu Province Outstanding Youth Fund Program · 2022 Jiangsu Universities’ Qinglan Project Funding · National Natural Science Foundation of China Youth Program · Postgraduate Research and Practice Innovation Program of Jiangsu Province
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