High purity nano-silica from rice husk ash (RHA) via chemical methodas additive/stabilizing agent for CO2 capture application

Mahmud, Mudrikah Sofia and Mohd Daud, Farah Diana and Sarifuddin, Norshahida and Mohd Zaki, Hafizah Hanim and Nordin, Norhuda Hidayah and Mohammad, Nur Farahiyah (2022) High purity nano-silica from rice husk ash (RHA) via chemical methodas additive/stabilizing agent for CO2 capture application. Key Engineering Materials, 908. pp. 373-378. ISSN 1013-9826 E-ISSN 1662-9795

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Abstract

This paper aims to synthesize high purity nano-sized silica from rice husk ash (RHA) by chemical method and investigate its physical and chemical properties. Through a controlled burning of rice husk, the white-colored RHA is obtained. Next, the RHA is subjected to the pre-treatment of acid leaching and thermal treatment. The synthesizing process has been done through the precipitationmethod. The EDX and FTIR analysis confirmed that the prepared powder consists of high purity silica particles through the detection of characteristic peaks of O and Si elements and the presence of primary bonds in silica, which are silanol groups and siloxane bonds. Meanwhile, the FESEM micrograph shows that silica particles in nano-scale had been obtained with an average diameter of 74.0 nm – 84.0 nm. The XRF and XRD analysis confirmed that the prepared powder yields 99.68% nano-silica in an amorphous structure.

Item Type:	Article (Note)
Uncontrolled Keywords:	Rice husk ash (RHA), chemical/precipitation method, nano-silica, high purity
Subjects:	T Technology > T Technology (General)
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	DR FARAH DIANA MOHD DAUD
Date Deposited:	24 May 2022 07:57
Last Modified:	24 May 2022 07:57
URI:	http://irep.iium.edu.my/id/eprint/98011

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