Adsorption of octadecyltrichlorosilane on mesoporous SBA-15

被引：31

作者：

Mirji, S. A. ^{[1
]}

Halligudi, S. B.

Sawant, Dhanashri P.

Jacob, Nalini E.

Patil, K. R.

Gaikwad, A. B.

Pradhan, S. D.

机构：

[1] Natl Chem Lab, Div Phys Chem, Pune 411008, Maharashtra, India

[2] Natl Chem Lab, Inorgan & Catalysis Div, Pune 411008, Maharashtra, India

[3] Natl Chem Lab, Ctr Mat Characterizat, Pune 411008, Maharashtra, India

来源：

APPLIED SURFACE SCIENCE | 2006年 / 252卷 / 12期

关键词：

SBA-15; OTS; self-assembly; adsorption; thermal stability;

D O I：

10.1016/j.apsusc.2005.06.009

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Adsorption of octadecyltrichlorosilane (OTS) on mesoporous SBA-15 has been studied by using Brunauer-Emmett-Teller (BET) surface area analysis, scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX), Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS) and thermo-gravimetric analysis (TGA) techniques. BET surface area analysis shows decrease of surface area from 930 to 416 m(2)/g after OTS adsorption. SEM pictures show close attachment of SBA-15 particles. EDAX measurements show increase of carbon weight percentage and decrease of oxygen and silicon weight percentage. XPS results closely support EDAX analysis. FTIR spectra shows presence of methyl (-CH3) and methylene (-CH2) bands and oriented OTS monolayer on SBA-15. Thermo-gravimetric analysis shows that the OTS adsorbed on SBA-15 are stable up to a temperature of 230 degrees C and that the OTS monolayers decompose between 230 and 400 degrees C. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：4097 / 4103

页数：7

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