Scalable routes to janus Au-SiO2 and ternary Ag-Au-SiO 2 nanoparticles

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

184 Scopus citations


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-SiO2 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 SiO2 after its hydrolysis and subsequent condensation catalyzed by ammonia.

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

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • Materials Chemistry


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