Enzymatic Degradation of Oxidized and Reduced Graphene Nanoribbons by Lignin Peroxidase.

ABSTRACT: The expanding use of graphene for various industrial and biomedical applications requires efficient remediation strategies during their disposal into waste streams. Additionally, the interactions of graphene with the biota need thorough evaluation. In this study, we investigated the interactions of oxidized and reduced graphene oxide nanoribbons (GONRs and rGONRs) with lignin peroxidase (LiP), a ligninolytic enzyme released from white rot fungus. GONRs and rGONRs were treated with LiP in the presence and absence of veratryl alcohol (VA; an electron transfer mediator and secondary metabolite of white rot fungi). Transmission electron microscopy showed the formation of large defects (holes) in the graphene sheet, which increased in diameter with increased degradation time. Raman spectroscopi

SUBMITTER: Lalwani G 

PROVIDER: S-EPMC4157692 | biostudies-literature | 2014 Oct

REPOSITORIES: biostudies-literature