RESEARCH ON FABRICATION AND ARSENIC ADSORPTION OF POLY (VINYLDIENE FLOURIDE)/GRAPHENE OXIDE NANOFIBER MATS

Abstract

In this study, poly (vinyldiene fluoride) (PVDF) nanofiber mats containing graphene oxide was fabricated by electrospinning method. Characteristics of morphology and chemistry of PVDF/GO nanofiber mats were examined by Scanning Electron Microscopy (SEM) and Fourier Transform Infrared (FTIR) Spectroscopy, respectively. These results show that PVDF nanofibers containing 2 wt% GO had diameter in range of 3.0 ÷ 3.5μm with rough surface. Mechanical properties of PVDF/GO (2 wt%) were characterized by tensile strength of 3,24 MPa and elongation of 28,55%. Capacity of arsenic adsorption of PVDF/GO (2 wt%)  was carried out with different As⁵⁺ concentrations. It was shown that increase of As⁵⁺ concentration led to increasing adsorption efficiency. When the concentration of As⁵⁺ solution was 1000µg/l, 1g of the PVDF/GO (2 wt%)  nanofiber mat would adsorb 474,97µg As⁵⁺. From these results, the prepared PVDF/GO nanofiber mats have shown a great potential to remove arsenic in water resource containing arsenic in Vietnam.