Simple and Cost‐Effective Synthesis of Fluorescent Graphene Quantum Dots from Honey: Application as Stable Security Ink and White‐Light Emission

Graphene quantum dots (GQDs) are synthesized by a simple, cost-effective method from the easily available bioresource of honey (honey made by bees using nectar from flowers) via emulsion-templated carbonization of carbohydrates, demonstrating for the first time the facile synthesis of nearly monodisperse GQDs from a bioresource. These GQDs can be applied as transparent security ink and a component for white-light emission.