Tailored Structure and Antibacterial Properties of Silica-Coated Silver Nanoplates by Pulsed Laser Irradiation

Emi Takeda, Wei Xu, Mitsuhiro Terakawa, Takuro Niidome

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We coated triangular-shaped silver nanoparticles, a type of anisotropic nanoplate (NPL), with silica (i.e., prepared Ag@SiO2 NPLs). When we irradiated Ag@SiO2 NPLs with nanosecond-pulsed laser light for 10 s, the triangular shape changed to spherical because of the photothermal effect. A high laser power exposed the silver core, and the particles exhibited strong antimicrobial activity. In contrast, at a moderate laser power, the silica layer crystallized, and the particles’ antimicrobial activity decreased. Thus, a combination of Ag@SiO2 NPLs and an appropriately tuned power of pulsed laser irradiation facilitated a decreased or an increased antimicrobial activity.

Original languageEnglish
Pages (from-to)7251-7256
Number of pages6
JournalACS Omega
Volume7
Issue number8
DOIs
Publication statusPublished - 2022 Mar 1

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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