The role of NaOH and papaya latex bio-activator during production of carbon nano particle from rice husks

Ngafwan Ngafwan, I Nyoman Gede Wardana, Widya Wijayanti, Eko Siswanto

Abstract


This study elucidates the role of NaOH and papaya latex bio-activator in producing carbon nanoparticles from rice husks. The process was made in four stages. First, pyrolysis; second, HEM; third, dispersion with NaOH in water; fourth, coagulation using bio-activators. The HEM process produces nano crack due to the residual stress. Dispersion of NaOH produces an electrical charge on the nano crack which then creates dipole force and dipole moment. The dipole force and moment provide energy for the nano cracks to propagate so that the carbon breaks into polar nanoparticles attracted by water and spread homogeneously in water. Bio-activator builds molecular chain as a bridge that connects the polar side of nanoparticles so that they coagulate to separate from water. The SEM, TEM, XRD, and FTR test result show that carbon nanoparticles produced in this process are polytypic fullerene-like SiC nanoparticles having a size of around 20 to100 nm. The papaya latex bio-activator and NaOH make the process become simple and efficient

Keywords


Rice husks; Residual stress; Dispersion; Bio-activation; Coagulation; Amorphous nanoparticle

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Published by: IOP Publishing and Vietnam Academy of Science and Technology
Frequency: Articles appear online as they are published with print copies published 4 times per year
ISSN: Print: 2043-6254; Online: 2043-6262
DOI Range: 10.1088/issn.2043-6262

© Copyright 2016 Advances in Natural Sciences: Nanoscience and Nanotechnology