天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

ChemicalBook >> journal list >> Sensors and Actuators B: Chemical >>article
Sensors and Actuators B: Chemical

Sensors and Actuators B: Chemical

IF: 8
Download PDF

PDDA electrostatic assembly of mesoporous MXene and AuNPs as a novel paper base SERS substrate for determination of CIP in milk

Published:9 December 2024 DOI: 10.1016/j.snb.2024.137100
Ruoyu Zhang, Xiaochan Zhao, Kai Kang, Xinyu Yang, Xiaoxin Tan, Lianfeng Ai, Weijun Kang

Abstract

In this study, a novel Surface Enhanced Raman Scattering (SERS) substrate was engineered by assembling mesoporous Ti3C2Tx (MesoTi3C2Tx) with gold nanoparticles (AuNPs) through cross-linking with poly (diallyl dimethyl ammonium chloride) (PDDA). MesoTi3C2Tx was first fabricated with a mesoporous structure and then modified with PDDA, after which the PDDA-coated MesoTi3C2Tx was applied to the rough surface of glass fiber filter paper. After drying, size-controlled AuNPs were dropped on the paper base PDDA-MesoTi3C2Tx substrate to form paper-based SERS substrate of PDDA-AuNPs/MesoTi3C2Tx. The adsorption capacity of MesoTi3C2Tx is 4.2-fold better than mono-few layer Ti3C2Tx, and the distribution of AuNPs on PDDA-MesoTi3C2Tx is more uniform than that on PDDA-Ti3C2Tx without mesoporous. After optimization, PDDA with the molecular weight of 100k - 200k can make paper-based PDDA-AuNPs/MesoTi3C2Tx substrate detect trace amount (10?ng/mL) of the methylene blue with significant Raman characteristic peak. The enhancement factor up to 2.09×106. The paper-based PDDA-AuNPs/MesoTi3C2Tx was used as SERS substrate to detect the ciprofloxacin. The result of detection is accurate, stable and sensitive especially in the application for milk detection. In conclusion, the novel paper-based PDDA-AuNPs/MesoTi3C2Tx constructed in this work as a SERS substrate can satisfy the needs of rapid SERS detection of veterinary drug residues in food.

Substances (4)

Materials
Procduct Name CAS Molecular Formula Supplier Price
Ascorbic Acid 50-81-7 C6H8O6 1627 suppliers $6.00-$2170.00
Acetonitrile 75-05-8 C2H3N 1022 suppliers $61180.00
Methanol 67-56-1 CH4O 833 suppliers $9.00-$7620.00
Sodium citrate 68-04-2 C6H9NaO7 663 suppliers $6.00-$1030.00

Similar articles

IF:16.1

Dimethylamine as a Substrate in Hydroaminoalkylation Reactions

Angewandte Chemie International Edition M.?Sc. Jens Bielefeld, Prof.?Dr. Sven Doye,etc Published: 10 October 2017
IF:3.7

2-(Methylamino)-5-chlorobenzophenone Imine: A Novel Product Formed in Base-Catalyzed Hydrolysis of Diazepam

Journal of pharmaceutical sciences Shen K. Yang, Ren Tang,etc Published: 1 July 1996