%0 Journal Article
%T Synthesis and characterization of graphene layers from rice husks
%A Dmitry I. Chenchik
%A Makpal A. Seitzhanova
%A Mukhtar A. Yeleuov
%A Nazym S. Elibaeva
%A Roberto Di Capua
%A Zulkhair A. Mansurov
%J -
%D 2018
%R https://doi.org/10.15328/cb986
%X In this work, a method of obtaining graphene layers from natural source specifically from rice husk was developed. A rice husk (RH) was used as a raw material, and potassium hydroxide was used as activation agent. The graphene layers were obtained after four successive stages: pre-carbonization, desilication in 1M NaOH solution, chemical activation and exfoliation of the carbonized rice husk (CRH). The obtained samples were studied using Raman spectroscopy, TEM and SEM; the Raman peaks evidenced the presence of graphene multilayers in the sample. A detailed observation of Raman spectroscopy showed that the obtained samples with ratio of 1/4 and 1/5 (RH/KOH) consisted of graphene layers with a high content of amorphous component. The yield of the product was ~ 3% by weight. This study can provide a new way to the large-scale synthesis of low-cost single and multi-layered graphene using rice husk or other renewable resources.
%U https://bulletin.chemistry.kz/index.php/kaznu/article/view/986