Sol-flame synthesis: A general strategy to decorate nanowires with metal oxide/noble metal nanoparticles

Yunzhe Feng, In Sun Cho, Pratap M. Rao, Lili Cai, Xiaolin Zheng

Research output: Contribution to journalArticle

Abstract

The hybrid structure of nanoparticle-decorated nanowires (NP@NW) combines the merits of large specific surface areas for NPs and anisotropic properties for NWs and is a desirable structure for applications including batteries, dye-sensitized solar cells, photoelectrochemical water splitting, and catalysis. Here, we report a novel sol-flame method to synthesize the NP@NW hybrid structure with two unique characteristics: (1) large loading of NPs per NW with the morphology of NP chains fanning radially from the NW core and (2) intimate contact between NPs and NWs. Both features are advantageous for the above applications that involve both surface reactions and charge transport processes. Moreover, the sol-flame method is simple and general, with which we have successfully decorated various NWs with binary/ternary metal oxide and even noble metal NPs. The unique aspects of the sol-flame method arise from the ultrafast heating rate and the high temperature of flame, which enables rapid solvent evaporation and combustion, and the combustion gaseous products blow out NPs as they nucleate, forming the NP chains around NWs.

Original languageEnglish (US)
Pages (from-to)855-860
Number of pages6
JournalNano letters
Volume13
Issue number3
DOIs
StatePublished - Mar 13 2013
Externally publishedYes

Keywords

  • Hybrid structure
  • flame synthesis
  • hierarchical structure
  • nanowires
  • sol flame

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Sol-flame synthesis: A general strategy to decorate nanowires with metal oxide/noble metal nanoparticles'. Together they form a unique fingerprint.

  • Cite this