From Redox Reactions to Nanomaterials: Visual Lab Activity for Exploring the Stabilization and Aggregation of Silver Nanoparticles

Riam Abu-Much

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

This study proposes a lab experiment consisting of three consecutive steps designed to expose undergraduate students to the fundamental aspects of nanoscience. Two different procedures for the reduction of silver ions were provided: The first resulted in a precipitate, and in the second reaction a colored suspension of silver nanoparticles was obtained. Next, the students explored the aggregation process of silver nanoparticles by converting one solution to the other, which produced interesting color changes. The present discussion centers on the role of this lab activity as a visual means to introduce students to basic concepts related to nanomaterials: metal nanoparticles, colloidal suspension, colloid stability, surface plasmon resonance of metal nanoparticles, zeta potential, electric double layers, and the aggregation process. The experiments were carried out by a group of second-year college students majoring in chemistry.

Original languageEnglish
Pages (from-to)4037-4045
Number of pages9
JournalJournal of Chemical Education
Volume98
Issue number12
DOIs
StatePublished - 14 Dec 2021
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2021 American Chemical Society and Division of Chemical Education, Inc.

Keywords

  • Aqueous Solution Chemistry
  • Colloids
  • Hands-On Learning/Manipulatives
  • Interdisciplinary/Multidisciplinary
  • Laboratory Instruction
  • Nanotechnology
  • Oxidation/Reduction
  • Second-Year Undergraduate
  • Solid State Chemistry
  • UV-Vis Spectroscopy

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