Effect of Cetyl Trimethyl Ammonium Bromide as Template of Mesoporous Silica MCM-41 from Rice Husk by Sol-Gel Method

International Conference on Condensed Matters and Advanced Materials 2018

Purwaningsih, Hariyati^1 ; Ervianto, Yohan^1 ; Pratiwi, Vania Mitha^1 ; Susanti, Diah^1 ; Purniawan, Agung^1

Material Engineering Department, Industrial Faculty Engineering, Institut Teknologi Sepuluh Nopember (ITS), Surabaya

60111, Indonesia^1

关键词: Amorphous silica;    Cetyl trimethyl ammonium bromides;    Heating treatments;    Hexagonal structures;    Mesoporous silica MCM-41;    Porous structures;    Sol-gel technique;    Variable parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/515/1/012051/pdf
DOI  :  10.1088/1757-899X/515/1/012051

来源: IOP

【 摘 要 】

Rice husk is an agricultural waste that potentially produces high-purity amorphous silica as the source of the precursor of mesoporous silica MCM-41. To obtain pure silica, acid leaching was applied to the rice husk followed by heating treatment in the furnace and synthesized by a sol-gel technique to produce amorphous silica. In this research, mesoporous silica MCM-41 were synthesized by a sol-gel technique assisted by CTAB as a template, then titrated with acetic acid and hydrothermal in the teflon line-autoclave. Various CTAB concentrations were applied as the research variable parameters. X-ray diffraction pattern shows that silica has an amorphous-like curve. FTIR data showed the presence of Si-O-Si function groups in the sample. SEM results showed coral reefs-microstructure with the particle sizes about 243 - 482 nm. TEM image showed the porous structure on the silica surface and formed a hexagonal structure mcm-41. The diameter of the shaft was 3.13 - 3.58 nm, hence the resulted silica material is classified as mesoporous material.