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 language | English |
---|---|
Pages (from-to) | 357-363 |
Number of pages | 7 |
Journal | Surface and Coatings Technology |
Volume | 203 |
Issue number | 3-4 |
DOIs | |
Publication status | Published - 2008 Nov 25 |
Bibliographical note
Funding Information:This study was supported by Seoul R&DB Program (Grant No. 10593).
All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry