Paper Title:
A New Insight into the Mechanistic Study on Synthesis of Silica Nanospheres
  Abstract

The physicochemical characteristics (SEM, N2 adsorption, FT-IR, MASNMR) of samples from kinetics (10 min, 20 min, 30 min, 1 h and 3h) of hydrolysis of tetraethyl orthosilicate (TEOS) gives new insight into the synthesis of nanosphere. The particle sizes are increased with time, however, the surface areas decreased. FT-IR investigation reveals the presence of high intensed silanol groups of 960 cm-1 at 10 min, which reduced on progress of the reaction time. This suggests the partial hydrolysis and condensation of alkoxy groups in TEOS. 29Si MASNMR analysis shows the presence three different silica species(Q4, Q3 and Q2) in 10 and 20 min samples. The intensity of Q2 species decreases with time and other species concentration were increased.

  Info
Periodical
Solid State Phenomena (Volumes 124-126)
Edited by
Byung Tae Ahn, Hyeongtag Jeon, Bo Young Hur, Kibae Kim and Jong Wan Park
Pages
1249-1252
DOI
10.4028/www.scientific.net/SSP.124-126.1249
Citation
D. S. Yun, H. J. Kim, H. C. Shin, V. Narayanan, J. W. Yoo, S. H. Lee, D. J. Lee, N. H. Kim, "A New Insight into the Mechanistic Study on Synthesis of Silica Nanospheres", Solid State Phenomena, Vols. 124-126, pp. 1249-1252, 2007
Online since
June 2007
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Price
$32.00
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