Method for obtaining lignin-POM-COF or lignosulfonate-POM-COF hybrid nanofibers using electrospinning technique

Abstract

The subject of the application is a method for obtaining lignin-POM-COF or lignosulfonate-POM-COF nanofibers using the electrospinning technique, in which poly(vinyl alcohol) and kraft lignin or calcium or magnesium lignosulfonate are dissolved in a deep eutectic mixture consisting of urea and lactic acid in a molar ratio of 1:2, obtaining solutions with a 1% concentration of poly(vinyl alcohol) and a 2.5% concentration of lignin or calcium or magnesium lignosulfonate, after which a polyoxometalate hybrid with a covalent organic structure (POM-COF) in the range of 40 - 150 mg, preferably 100 mg, is added to 10 ml of such a solution, and then the electrospinning process is carried out under specific process conditions.