ACADSTAFF UGM
| Title | : | Coating of L-Arginine Modified Silica on Magnetite through Two Different Sol-Gel Routes |
| Author | : |
AMARIA (1) Dr. Suyanta, M.Si. (2) Prof. Dr.rer.nat. Nuryono, M.S. (3) |
| Date | : | 0 2017 |
| Keyword | : | L-arginine, magnetite, silica, sol-gel, coating L-arginine, magnetite, silica, sol-gel, coating |
| Abstract | : | In this research, magnetite coated with L-arginine modified silica (Fe3O4/SiO2-GPTMS-Arg) has beensynthesized through a sol-gel process at a room temperature in two Routes. In Route 1, a precursor of sodiumsilicate solution (source of SiO2), 3-glycidoxypropyltrimethoxysilane (GPTMS) as a coupling agent and L-arginine(Arg) as the source of functional groups were added sequentially to magnetite nanoparticles (Fe3O4). Gelling wascarried out by adding HCl solution dropwise to the mixture to reach pH of 7.0. The product was washed with waterand ethanol and then dried at 65 °C for 1 day. In Route 2, sodium silicate solution was added to a mixture of GPTMSand L-arginine, and then the sol obtained was added into magnetite nanoparticles. The results were characterizedwith FTIR spectroscopy, X-ray diffraction, atomic absorption spectroscopy and volumetric method to identifyfunctional groups, crystal size, iron ions released and amino groups content, respectively. The results showed thatFe3O4/SiO2-GPTMS-Arg has been successfully synthesized through both two routes. Route 1, however, gaveproduct of Fe3O4/SiO2-GPTMS-Arg more stable and more content of amino groups than Route 2. The presence ofamino groups leads to the application of the product for metal ion removal from aqueous solution. |
| Group of Knowledge | : | Kimia |
| Original Language | : | English |
| Level | : | Internasional |
| Status | : |
Published
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