Morphology of metallic nanoparticles as a function of deposition time in electroless deposition of metal on multi-walled carbon nanotubes

Jeong Hoon Byeon, Jungho Hwang

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Abstract

Morphology of silver (or copper) nanoparticles as a function of deposition time was examined in electroless deposition of metal on multi-walled carbon nanotubes (MWCNTs). Silver (or copper) deposited MWCNTs were prepared using successively, surface oxidation, tin-palladium activation, hydrochloric acid-acceleration, and ELD of silver (or copper). The results show that nanoparticles of face-centered cubic silver (or copper) were deposited initially on the interior surface of a MWCNT (~ 50 nm in inner diameter) but later on its exterior surface. The percentage silver (or copper) in the coated MWCNTs increased from 7.0 (6.7) to 28.2 (25.5) wt.% by weight for a deposition time ranging from 3 to 10 min. The average diameter of silver (copper) nanoparticles increased from 1.3 (1.1) to 2.6 (2.3) nm, while the surface area and pore volume decreased from 261 to 144 (81) m2/g and from 1.02 to 0.38 (0.27) cm3/g, respectively. However, there was no silver deposition on the interior surface of a thin-MWCNT (~ 5 nm in inner diameter) observed because the capillarity decreases with decreasing tube diameter.

Original languageEnglish
Pages (from-to)357-363
Number of pages7
JournalSurface and Coatings Technology
Volume203
Issue number3-4
DOIs
Publication statusPublished - 2008 Nov 25

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All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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