Scalable routes to janus Au-SiO 2 and ternary Ag-Au-SiO 2 nanoparticles

Tao Chen, Gang Chen, Shuangxi Xing, Tao Wu, Hongyu Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

128 Scopus citations

Abstract

A study was conducted to develop approach to control silica deposition on partial surface of Au nanospheres (NS). The selective deposition was driven by the partitioned surface functionalities on AuNSs through competitive ligand coordination. AgNSs or Ag nanorods (NRs) were grown on the exposed Au surface, generating ternary Ag-Au-SiO 2 structures and reducing the symmetry. Tetraethyl orthosilicate (TEOS) was used as silica precursor to conduct the investigations. The surface of the AuNSs was partially encapsulated with SiO 2 after its hydrolysis and subsequent condensation catalyzed by ammonia.

Original languageEnglish (US)
Pages (from-to)3826-3828
Number of pages3
JournalChemistry of Materials
Volume22
Issue number13
DOIs
StatePublished - Jul 13 2010

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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