Abstract
Sulphur dioxide (SO2) is an important atmospheric pollutant, and capture of SO2 is of great importance for the environment, human health and market. Carbon based materials, especially activated carbon, are mostly used for adsorption purposes. However, there is a notable lack on adsorption of SO2 on graphene oxide (GO) fibers and fiber web surface. In this study, the effect of addition of activated carbon, pH of GO dispersions, hydrazine reduction and oxygen/argon plasma treatment on SO2 adsorption of GO fiber web surface were evaluated. It was seen that GO fiber web surface with activated carbon provides high SO2 adsorption (896 mg SO2/g) which is very higher than many of carbon based materials presented in the literatures. Single coagulation bath increases surface roughness of fiber and provides higher functional group than three coagulation baths leading to higher SO2 adsorption capacity.
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