Ag nanocubes monolayer-modified PDMS as flexible SERS substrates for pesticides sensing

被引：43

作者：

Xia, Dacheng ^{[1
]}

Jiang, Panpan ^{[1
]}

Cai, Zhiwei ^{[1
]}

Zhou, Rui ^{[1
]}

Tu, Bo ^{[1
]}

Gao, Nan ^{[1
]}

Chang, Gang ^{[1
]}

He, Hanping ^{[2
]}

He, Yunbin ^{[1
]}

机构：

[1] Hubei Univ, Sch Mat Sci & Engn, Hubei Key Lab Polymer Mat, Minist Educ,Key Lab Green Preparat & Applicat Fun, 368 Youyi Ave, Wuhan 430062, Peoples R China

[2] Hubei Univ, Coll Chem & Chem Engn, Key Lab Synth & Applicat Organ Funct Mol, Minist Educ, 368 Youyi Ave, Wuhan 430062, Peoples R China

来源：

MICROCHIMICA ACTA | 2022年 / 189卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Ag Nanocubes; Interface self-assemble; Flexible SERS substrates; Thiram; SILVER NANOCUBES; GOLD NANOPARTICLES; THIRAM; DEGRADATION; NANOWIRES; SENSORS; WATER;

D O I：

10.1007/s00604-022-05328-z

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new approach is presented to fabricate flexible surface-enhanced Raman scattering (SERS) substrate of Ag nanocubes monolayer-modified polydimethylsiloxane (Ag NCs/PDMS) through a powerful three-phase interface self-assemble method. The morphologies and crystal structures were characterized by scanning electron microscopy and X-ray diffraction. The self-assembled Ag NCs/PDMS substrate exhibited high SERS activity and good signal homogeneity, which was successfully used for quantitative detection of thiram; the detection limit reached 10 ng/mL, and the linear range is 10-1000 ng/mL. Furthermore, the flexible SERS substrates were successfully employed to detect thiram residues on factual apple samples, and trace amount (1 ng/cm(2)) of thiram residues was detected on apple peels. The excellent SERS detection ability of self-assembled Ag NCs/PDMS substrate indicated that it will play an important role in pesticide detection in the future. Graphical abstract

引用

页数：10

共 47 条

[1] Development of gold nanoparticles modified screen-printed carbon electrode for the analysis of thiram, disulfiram and their derivative in food using ultra-high performance liquid chromatography [J].