- 期刊
Preparation of Solvent-dispersible Nano-silica Powder by Sol-gel Method
摘要
Solvent dispersible nano-silica powder was prepared by a dual-step sol-gel process: first, SiO_2nanoparticles were synthesized through acid-catalyzed hydrolysis and condensation of tetraethyl orthosilicate in 2-propanol aqueous solution. Then, the particles were surface-modified by means of the capping agent trimethylethoxysilane (TMES). The formed product, termed TSiO_2 nanopowder, was dispersible in many organic solvents, and the dispersibility was found to depend on the amounts of TMES bounded to the SiO_2 nanoparticles. FTIR spectra of TSiO_2 samples confirm Si-O-Si linkage being formed between TMES and SiO_2 through the capping reaction. The sizes of TSiO_2 dispersed in various solvents, as determined by dynamic light scattering (DLS), fell largely over the range 2-20 nm for solvents with solubility parameters of 16-29.6 MPa^(1/2). TEM imaging of the nanoparticles indicated that they were well separated with the largest identifiable size of ~10 nm, agreeing with the results obtained from DLS.
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延伸閱讀
- Kaneko, Y., & Arake, T. (2012). Sol-Gel Preparation of Highly Water-Dispersible Silsesquioxane/Zirconium Oxide Hybrid Nanoparticles. International Journal of Polymer Science, 2012(), 534-539. https://doi.org/10.1155/2012/984501
- Cheng, C., Du, Y., Huang, Z., Yu, K., Gao, Y., & Xiao, S. (2022). Preparation of Evodiamine Molecularly Imprinted Composite Membrane by Sol-gel Method. Frontiers in Science and Engineering, 2(2), 1-7. https://doi.org/10.29556/FSE.202202_2(2).0001
- 楊文華（2018）。Preparation and Characterization of La-doped SnO2 by Sol-Gel Method〔碩士論文，國立屏東科技大學〕。華藝線上圖書館。https://doi.org/10.6346/THE.NPUST.ME.019.2018.E06
- 宋憶青、李文昭、劉正字（2005）。Preparation of PVA/Silica Hybrids by Sol-Gel Process with Various Blending Ratios and Catalyst Concentrations。林產工業，24(2)，147-159。https://doi.org/10.6561/FPI.2005.24.(2).6
- 蘇一哲、湯偉鉦（2012）。Nanocomposites Prepared by Sol-Gel Process。化學，70(1)，39-51。https://doi.org/10.6623/chem.2012005