Preparation of size controlled nanometric spheres of colloidal silica for synthetic opal manufacture

C. A.Cortés Escobedo, J. Muñoz-Saldaña, D. Jaramillo Vigueras, F. J.Espinoza Beltrán

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

In this work, we present a modification of the sol-gel based, Stöber, Fink and Bohn's (SBF) procedure for the preparation of nanometric spheres of silica with a monomodal distribution of size and controlled diameter. In the SBF method, tetraethyl orthosilicate (TEOS) is used as a precursor molecule and hydrolysis and condensation reactions to form chains and branches of Si-O bonds are carried out. The novelty of this work consists in the use of an aqueous ammonium hydroxide solution as ammonia source. Graphics of particle size as a function of reagent contents are presented (reaction yield control) and differences to the results from the original SBF method are discussed. This procedure is the very first step for the development of a sol-gel synthetic opals preparation process. As a result, the best route to prepare monodisperse spheres in the whole range of 250 to 850 nm is that of keeping constant the TEOS and NH3 contents at 0.28:1M varying water contents in the range of 8-12.5 M.
Original languageAmerican English
Title of host publicationPreparation of size controlled nanometric spheres of colloidal silica for synthetic opal manufacture
Pages187-192
Number of pages167
ISBN (Electronic)0878499938, 9780878499939
DOIs
StatePublished - 1 Dec 2006
Externally publishedYes
EventMaterials Science Forum -
Duration: 1 Dec 2006 → …

Publication series

NameMaterials Science Forum
Volume509
ISSN (Print)0255-5476

Conference

ConferenceMaterials Science Forum
Period1/12/06 → …

Fingerprint

tetraethyl orthosilicate
Silicon Dioxide
Sol-gels
Ammonium Hydroxide
Silica
gels
silicon dioxide
Ammonium hydroxide
preparation
Condensation reactions
Ammonia
Water content
moisture content
hydroxides
reagents
hydrolysis
ammonia
Hydrolysis
condensation
Particle size

Cite this

Escobedo, C. A. C., Muñoz-Saldaña, J., Vigueras, D. J., & Beltrán, F. J. E. (2006). Preparation of size controlled nanometric spheres of colloidal silica for synthetic opal manufacture. In Preparation of size controlled nanometric spheres of colloidal silica for synthetic opal manufacture (pp. 187-192). (Materials Science Forum; Vol. 509). https://doi.org/10.4028/0-87849-993-8.187
Escobedo, C. A.Cortés ; Muñoz-Saldaña, J. ; Vigueras, D. Jaramillo ; Beltrán, F. J.Espinoza. / Preparation of size controlled nanometric spheres of colloidal silica for synthetic opal manufacture. Preparation of size controlled nanometric spheres of colloidal silica for synthetic opal manufacture. 2006. pp. 187-192 (Materials Science Forum).
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Escobedo, CAC, Muñoz-Saldaña, J, Vigueras, DJ & Beltrán, FJE 2006, Preparation of size controlled nanometric spheres of colloidal silica for synthetic opal manufacture. in Preparation of size controlled nanometric spheres of colloidal silica for synthetic opal manufacture. Materials Science Forum, vol. 509, pp. 187-192, Materials Science Forum, 1/12/06. https://doi.org/10.4028/0-87849-993-8.187

Preparation of size controlled nanometric spheres of colloidal silica for synthetic opal manufacture. / Escobedo, C. A.Cortés; Muñoz-Saldaña, J.; Vigueras, D. Jaramillo; Beltrán, F. J.Espinoza.

Preparation of size controlled nanometric spheres of colloidal silica for synthetic opal manufacture. 2006. p. 187-192 (Materials Science Forum; Vol. 509).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Escobedo CAC, Muñoz-Saldaña J, Vigueras DJ, Beltrán FJE. Preparation of size controlled nanometric spheres of colloidal silica for synthetic opal manufacture. In Preparation of size controlled nanometric spheres of colloidal silica for synthetic opal manufacture. 2006. p. 187-192. (Materials Science Forum). https://doi.org/10.4028/0-87849-993-8.187