High yield synthesis of graphene quantum dots from biomass waste as a highly selective probe for Fe³⁺ sensing.

ABSTRACT: Graphene quantum dots (GQDs), a novel type of zero-dimensional fluorescent materials, have gained considerable attention owing to their unique optical properties, size and quantum confinement. However, their high cost and low yield remain open challenges for practical applications. In this work, a low cost, green and renewable biomass resource is utilised for the high yield synthesis of GQDs via microwave treatment. The synthesis approach involves oxidative cutting of short range ordered carbon derived from pyrolysis of biomass waste. The GQDs are successfully synthesised with a high yield of over 84%, the highest value reported to date for biomass derived GQDs. As prepared GQDs are highly hydrophilic and exhibit unique excitation independent photoluminescence emission, attributed to their

SUBMITTER: Abbas A 

PROVIDER: S-EPMC7718218 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature