Improvement of SO₂ adsorption capacity of fiber web surface produced from continous graphene oxide fiber

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.

Keywords:

• SO₂ adsorption
• nonwoven
• graphene oxide fiber
• activated carbon
• hydrazine reduction
• plasma

Acknowledgment

Authors acknowledge the support provided by TUBITAK (under project number 114M524).