Synthesis of Nanosized Silica Powder by Ultrasonic Process

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Nanosized silica powders were synthesized via w/o emulsion method using sodium silicate as SiO2 source under ultrasonic process. The powders were prepared under conventional process and ultrasonic process using the same reactants at ambient temperature for 1h varying the concentration of Na2SiO3 solution while fixing the concentration of surfactant in cyclohexane. The particle size of the silica powder decreased with decreasing the concentration of sodium silicate solution under both conditions, with and without ultrasounds. However, the particle size and size distribution of the silica powder with ultrasounds were smaller and narrower than those without ultrasounds, establishing that ultrasound treatments decrease the particle size and become narrow in particle size distribution.

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Periodical:

Advanced Materials Research (Volumes 11-12)

Main Theme:

Edited by:

Masayuki Nogami, Riguang Jin, Toshihiro Kasuga and Wantai Yang

Pages:

669-672

DOI:

10.4028/www.scientific.net/AMR.11-12.669

Citation:

S. G. Lee et al., "Synthesis of Nanosized Silica Powder by Ultrasonic Process", Advanced Materials Research, Vols. 11-12, pp. 669-672, 2006

Online since:

February 2006

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$35.00

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[10] [20] [30] [40] [50] [60] Frequency(%) Particle size(µµµµm) d=1. 05µµµµm (a) 0. 0 0. 5 1. 0 1. 5 2. 0 2. 5 3. 0 3. 5.

[10] [20] [30] [40] [50] [60] (b) Frequency(%) Particle size (µµµµm) d=0. 17µµµµm Fig. 5. Particle size distributions of SiO2 powders synthesized with 0. 5M Na2SiO3 under (a) conventional process and (b) ultrasonic process.

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