Work

Highly efficient surface-enhanced Raman scatting performance of the Na2Ti3O7-Au chip for facile thiram or malachite green sensing

Year: 2025

Type: article

Abstract: Thiram and malachite green (MG) are widely used in daily life, but their excessive residues, as highlighted by the World Health Organization (WHO), pose significant health risks. In this study, Na 2 Ti 3 O 7 nanosheets (NTSs) with a 3D cross-linked morphology were prepared by hydrothermal synthesis and magnetron sputtering for rapid detection of thiram and MG. NTS-Au composites demonstrated excellent surface-enhanced Raman scattering (SERS) activity, with an enhancement factor (EF) of 1.43 × 10 7 . Notably, the NTS-Au composites showed excellent reproducibility and a good linear relationship in the concentration range of 10 −3 to 10 −8 M, achieving limits of detection (LODs) of 4.07 × 10 −10 for thiram and 1.82 × 10 −9 M for MG. The remarkable sensitivity arises from the unique nanosheet structure, which enables multiple reflections of electromagnetic waves . This light-trapping effect enhances resonance absorption, promoting charge transfer (CT) and exciton enhancement. This study provides a novel approach for the rapid and sensitive detection of thiram and MG.

Source: Colloids and Surfaces A Physicochemical and Engineering Aspects

DOI: 10.1016/j.colsurfa.2025.137051

Authors: Lu Yang, Jinping Tang, Shuang Guo, Eungyeong Park, Lei Chen, Young Mee Jung

Institutions: Jilin Normal University, Kangwon National University, Jilin Jianzhu University

Language: English

Topic: Gold and Silver Nanoparticles Synthesis and Applications

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,200

Funders: Ministry of Education of the People's Republic of China, Korea Basic Science Institute, National Research Foundation of Korea, Education Department of Jilin Province