Graphene oxide and cobalt oxide composite materials
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To prepare the GNS–Co3O4 composite, 50 mg of Ex-GO was dispersed in 100 mL of water. To this solution, 10 mM of cobaltous nitrate (Co(NO3)2·6H2O) was added drop by drop while stirring. Subsequently, 12 mM of urea was added to the mixture (to promote hydrolysis), and the solution was transferred to a 250 mL round-bottom flask where it was heated at 120°C under reflux for 6 hours. The pink-black precipitate that formed was separated using a centrifuge and washed repeatedly with water and ethanol. The resulting powder was then calcined in air at 400°C for 3 hours to obtain the GNS–Co3O4 composite. What is Ex-GO? Is GNS a graphene nanomaterial? Can graphene oxide and cobalt oxide composite materials be used for photocatalytic determination? If possible, what is that solution? ? ? ? Urgent, thanks! ! !
Ex- GO = exfoliated graphene oxide; GNS = Graphene Nanosheet, nanoscale graphene sheets