Synergistic SERS effects in organic/MoS_(2) heterojunctions with cavity structure enabling nanoplastics screening and antibiotic adsorption behavior detection  

作　　者：Liqi Ma Abdur Rahim Baiju Lü Muhammad Saleem Xiaoyu Zhang Mingyue Li Muhammad Zahid Mei Liu 马立琪;阿卜杜勒-拉希姆;吕白菊;穆罕默德-萨利姆;张晓雨;李明月;穆罕默德-扎希德;刘玫

机构地区：[1]School of Physics and Electronics,Shandong Normal University,Jinan 250358,China

出　　处：《Chinese Physics B》2025年第4期567-573,共7页中国物理B(英文版)

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.12074229).

摘　　要：The detection of nanoplastics(NPs)and their interactions with antibiotics is critical due to their potential environmental and health risks.Traditional detection methods are challenged by the small size and chemical similarity of NPs to microplastics.Current surface-enhanced Raman scattering(SERS)substrates for NP detection are limited by high cost,reliance on single enhancement modes,and insufficient sensitivity and selectivity,especially for NP-antibiotic complexes.In this study,the F/M-AAO substrate,which integrates 2,3,5,6-tetrafluoro-tetracyanoquinodimethane(F_(4)TCNQ)and molybdenum disulfide(MoS_(2))with anodic aluminum oxide(AAO)templates,is used to enhance the detection of NPs and NP-antibiotic complexes.The conical cavity structure of the substrate facilitates the enrichment and direct detection of NPs with diameters smaller than 450 nm.The three-dimensional(3D)F/M-AAO substrate achieved a limit of detection(LOD)of 1.73×10^(6)ng/L for 100-nm NPs and a minimum detection concentration of 10^(-10)M for ciprofloxacin adsorbed on NPs(NPs-CIP).It demonstrated remarkable sensitivity and selectivity in the detection of both individual NPs and NPantibiotic complexes.This work highlights the innovative application of the F/M-AAO substrate in the SERS detection of NPs and NP-antibiotic complexes,providing a low-cost and effective platform for monitoring emerging environmental contaminants.

关 键 词：synergistic SERS enhancement organic/MoS_(2)composite nanoplastics 

分 类 号：O657.37[理学—分析化学]