Adsorption characteristics of parent and copper-sputtered RD silica gels

B. B. Saha, A. Chakraborty, S. Koyama, J. B. Lee, J. He, K. C. Ng

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Surface modification of type RD silica gel was achieved by depositing layers of thin-film copper on the parent silica gel surfaces so as to improve their performances, circumventing the poor thermal conductivity of the adsorbent. Porous properties (surface area, pore size and volume) were determined using nitrogen adsorption/desorption isotherm measurements, which were performed on adsorbents for both parent and Cu-sputtered silica gels in liquid nitrogen at a temperature of 77.4K. The copper sputtering experiments were conducted in a chamber of inert argon gas where the chamber was bombarded with a radio frequency (RF) of 13.56MHz. The comparative performance of the parent and Cu-sputtered silica gels was determined via various key measurements such the Brunauer-Emmett-Teller (BET), the Horvath and Kawazoe (HK) and the hot-disc sensor methods.

Original languageEnglish
Pages (from-to)1113-1121
Number of pages9
JournalPhilosophical Magazine
Volume87
Issue number7
DOIs
Publication statusPublished - Mar 1 2007

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silica gel
copper
adsorption
adsorbents
chambers
liquid nitrogen
surface properties
radio frequencies
isotherms
thermal conductivity
sputtering
desorption
argon
porosity
nitrogen
sensors
thin films
gases
temperature

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Adsorption characteristics of parent and copper-sputtered RD silica gels. / Saha, B. B.; Chakraborty, A.; Koyama, S.; Lee, J. B.; He, J.; Ng, K. C.

In: Philosophical Magazine, Vol. 87, No. 7, 01.03.2007, p. 1113-1121.

Research output: Contribution to journalArticle

Saha, BB, Chakraborty, A, Koyama, S, Lee, JB, He, J & Ng, KC 2007, 'Adsorption characteristics of parent and copper-sputtered RD silica gels', Philosophical Magazine, vol. 87, no. 7, pp. 1113-1121. https://doi.org/10.1080/14786430601032386
Saha, B. B. ; Chakraborty, A. ; Koyama, S. ; Lee, J. B. ; He, J. ; Ng, K. C. / Adsorption characteristics of parent and copper-sputtered RD silica gels. In: Philosophical Magazine. 2007 ; Vol. 87, No. 7. pp. 1113-1121.
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