Synthesis of Mesoporous Silica Immobilized with 3-[(Mercapto or amino)propyl]trialkoxysilane by a Simple One-pot Reaction |
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Authors: | Farook Adam Kasim Mohammed Hello Hasnah Osman |
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Institution: | School of Chemical Sciences, University Sains Malaysia, 11800 Penang, Malaysia |
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Abstract: | Sodium silicate from rice husk ash (RHA) was transformed to functionalized silica with 3‐(mercaptopropyl)‐trimethoxysilane (MPTMS) or 3‐(aminopropyl)triethoxysilane (APTES) via a simple sol‐gel technique in a one‐pot synthesis to give RHAPrSH and RHAPrNH2. The 29Si MAS NMR of RHAPrSH and RHAPrNH2 showed the presence of T1, T2, T3, Q2, Q3 and Q4 silicon centers. The 13C MAS NMR showed that RHAPrSH had chemical shifts at δ 16.59, 32.73, consistent with two of the carbon atoms of the MPTMS moiety, while the 13C MAS NMR of RHAPrNH2 had chemical shifts at δ 14.58, 26.13, 47.87, consistent with the three carbon atoms of the APTES moiety. The presence of carbon, silicon, sulfur and nitrogen in RHAPrSH and RHAPrNH2 was determined by a combination of elemental analysis and EDX study. |
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Keywords: | surface modification organic‐silica hybrid organic‐inorganic material 3‐(mercaptopropyl)‐triemthoxysilane 3‐(aminopropyl)triethoxysilane |
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