What is it about?
The potential of tannic acid as a dispersant of graphene oxide in water has been investigated for the first time. To assess its dispersant capability, riboflavin has been selected since a fluorescent biomolecule, riboflavin, has been selected. GO and TA cause a quenching effect on riboflavin fluorescence,
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Why is it important?
This study paves the way towards the use of environmentally friendly dispersant agents instead of conventional organic solvents or synthetic surfactants to attain high-quality dispersions of carbon nanomaterials in water.
Perspectives
Bioactive molecules with antioxidant character such as tannic acid or trans-resveratrol and other polyphenols such as coffee , green and black tea can be used for graphene exfoliation. These bioactive compounds produce stable dispersions of graphene by sonication in aqueous medium as an easy, economical and environmentally friendly way.
Ana Maria Diez Pascual
Universidad de Alcala de Henares
Read the Original
This page is a summary of: Fluorescence study of the influence of centrifugation on graphene oxide dispersions in water and in tannic acid, Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, October 2022, Elsevier,
DOI: 10.1016/j.saa.2022.121302.
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