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Citation: MA Xue-Hui, ZHAO Yan-Bao, XIAO Gao-Feng, WU Zhi-Shen. Synthesis of Mercaptopropyl Functionalized Nanosized Mesoporous Silica[J]. Acta Physico-Chimica Sinica, ;2008, 24(03): 492-496. doi: 10.3866/PKU.WHXB20080325 shu

Synthesis of Mercaptopropyl Functionalized Nanosized Mesoporous Silica

1.
Key Laboratory of Special Functional Materials, Henan University, Kaifeng 475004, Henan Province, P. R. China

Received Date: 24 September 2007
Available Online: 25 December 2007

Thiol-functionalized nanosized mesoporous silica particles with a diameter of 50-200 nm were prepared and characterized by TEM, TG, and DTA. (3-mercaptopropyl) trimethoxy silane (MPTMS) was introduced into the silica networks through three synthesis routes. The mercapto group induces significant changes in the particle morphology, transforming highly ordered hexa nal particles into nanoscale bars. The size of mesoporous silica can be adjusted by controlling reacting time. The addition of triethanolamine instead of NaOH leads to the formation of functionalized spherical particles having a diameter of ca 100 nm. The template can be extracted by HCl-ethanol solution for protecting thiol functional group. In addition, the formation mechanism of the mesoporous silica particles was also discussed.
- Mesoporous silica; Thiol-functionalization; Colloidal suspension
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