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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Synthesis and Application of Ag Nanoparticles for an Undergraduate Laboratory: Ultrasensitive Method to Detect Copper(II) Ions

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Farinas, Pedro Sanchez [1] ; Doimo, Ana Luiza [1] ; da Silva, Marcos A. R. [1] ; Teixeira, Ivo F. [1]
Total Authors: 4
[1] Univ Fed Sao Carlos, Dept Chem, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Journal of Chemical Education; v. 97, n. 10, p. 3771-3777, OCT 13 2020.
Web of Science Citations: 0

Herein, we describe a simple laboratory experiment to address nanomaterial synthesis, plasmon resonance, and its application to detect Cu2+ in ultralow concentrations. The proposed experiment is very visual and appealing for chemistry students, especially the undergraduate-level chemistry major. In this experiment, the aggregation of silver nanoparticles (Ag NPs) promoted by interactions between the NPs and cations in solution induces a color change in the Ag NP suspension. This visual color change can be explained by concepts of plasmon resonance and nanomaterial properties which can be addressed in this laboratory course. The experiment comprises three main parts: (1) synthesis of Ag NPs using a well-established method reported in the literature; (2) functionalization of the Ag NP surface by l-cysteine; and (3) application of the Ag NPs to detect Cu2+ ions in ultralow concentrations. This experiment can be performed with a relatively simple laboratory infrastructure and with instrumentation that is generally widely available. (AU)

FAPESP's process: 17/50118-9 - Plasmonic nanoparticles supported on semiconductors and its applications in photocatalysis
Grantee:Ivo Freitas Teixeira
Support type: Regular Research Grants