Graphene composite material modified with coordinating group, method of preparation and use thereof
AssigneeMing Chi University of Technology
InventorsYi Ting LAI, Chen Chieh LIAO
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Abstract
The present invention relates to a graphene composite material modified with coordinating group, method of preparation and use thereof, especially a graphene oxide (GO) modified with ethylenediamine group or a reduced graphene oxide (rGO) formed by silanization which may be applied to wastewater treatment equipment to adsorb various heavy metals in contaminated water. The present invention also relates to a method to remove heavy metal ions from wastewater contaminated by heavy metal utilizing a graphene composite material modified with coordinating group.
Claims20
A graphene composite material modified with coordinating group, characterized by comprising a substrate comprising fibrous material or porous material and graphene oxide (GO) or reduced graphene oxide (rGO) which are modified with coordinating group and coated on the substrate and/or coated within the substrate;
- the coordinating groups are ethylenediamine groups covalently bonded to the graphene oxide (GO) or the reduced graphene oxide (rGO) via linking group;
- a ratio of a basic unit of the graphene oxide (GO) or the reduced graphene oxide (rGO) to the coordinating group is 1:0.4 to 1:0.8;
- a weight ratio of the substrate to the graphene oxide (GO) or the reduced graphene oxide (rGO) is 0.5:1 to 0.7:1.
Dependencies are inferred from the claim text.