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Rice Starch-Templated Synthesis of Nanostructured Silica and Hematite
1  Centre of Foundation Studies UiTM, Universiti Teknologi MARA (UiTM), Cawangan Selangor, Kampus Dengkil, Dengkil 43800, Selangor, Malaysia.

Published: 30 August 2018 by MDPI in 1st International Online Conference on Nanomaterials session Synthesis

Synthesis of nanostructured materials is not straightforward that involve the complicated use of surfactant templates. Currently, only non-renewable resources that are hazardous and toxic are used to produce the surfactant templates in the industries. This study presents an environmentally friendly and efficient route for the synthesis of nanostructured of both silica and hematite using rice starch as a promising biomaterials template. The rice starch-templated synthesis yield both hematite and silica with nano-sized and high surface area. In particular, the nanostructured silica showed a pseudo-spherical morphology with nano-sized from 13 to 22 nm, amorphous structure and surface area of 538.74 m2•g−1. On the other hand, the nanostructured hematite showed an oval-shaped morphology with nano-sized from 24 to 48 nm, rhombohedral structure, and surface area of 20.04 m2•g−1. Interestingly, both synthesized silica and hematite showed capability as good nano-catalysts. More importantly, the used of rice starch-template a greener approach in the synthesis of nanomaterials have been successfully outlined.

Keywords: nanostructured materials; rice starch; template-assisted synthesis; nanoparticles hematite; poros silica
Comments on this paper
Jiye Fang
Q from Dr. Fang
It seems this is a new approach of NP fabrication. Nice work.
I have one question - when "calcination to 700 °C", what is the atmosphere? Thanks.

Juan Matmin
Calcination condition (Answer to Q from Dr. Fang)
The calcination condition for both hematite and silica is maintained at 1 atm.

Thank you.

Jiye Fang
Q from Dr. Fang
Thanks. I meant it was in air, or other annealing gas?

Juan Matmin
Specific calcination condition (Answer to Q from Dr. Fang)
To be precise, it was heated to 700 °C (heating rate of 5 °C/min) in air at 1 atm and maintained at that temperature for 4 h, before slowly being cooled to room temperature. Thanks.

Jiye Fang
Q from Dr. Fang
Many thanks!

Omari Leroy
My spouse and i shocked while using investigation anyone created to choose this certain release outstanding. Amazing task!
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