Synthesis of carbon nanodots from wine cork for the detection of ferrum (III) ions and bioimaging of onion epidermal cells

Abstract

In this study, we synthesised the carbon nanodots (CDs) from the waste wine cork using a hydrothermal method. The analysis results indicated the average diameter of CDs was 6.2±2.7 nm. The UV-vis absorption spectrum shows two peaks around 217 and 280 nm, which are attributed to π-π* transition and n-π* transition of the C=C and the C=O bonds, respectively...