Phosphate functionalized poly(vinyl alcohol)/poly(acrylic acid) (PVA/PAA): an electrospinning nanofiber for uranium separation

• Published in: Journal of radioanalytical and nuclear chemistry Vol. 326; no. 1; pp. 475 - 486
• Main Authors: Xie, Jinhua, Lv, Riwen, Peng, Hong, Fan, Jiali, Tao, Qinqin, Dai, Ying, Zhang, Zhibin, Cao, Xiaohong, Liu, Yunhai
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.10.2020; Springer Nature B.V
• Subjects: Acrylics; Adsorption; Aqueous solutions; Chemistry; Chemistry and Materials Science; Diagnostic Radiology; Electrospinning; Elution; Hadrons; Heavy Ions; Inorganic Chemistry; Nanofibers; Nuclear Chemistry; Nuclear Physics; Physical Chemistry; Polyacrylic acid; Polyvinyl alcohol; Separation; Tensile strength; Uranium; Water stability; X ray photoelectron spectroscopy; Electrospinning process; PVA/PAA nanofiber; Uranium ions; Adsorption isotherms and kinetics
• ISSN: 0236-5731; 1588-2780
• DOI: 10.1007/s10967-020-07319-x

With the aim of capturing uranium from water mediums phosphate functionalized poly(vinyl alcohol)/poly(acrylic acid) (PVA/PAA) nanofiber (PVA/PAA-PO 4 ) was firstly fabricated using the electrospinning method of fast process and high efficiency. The as-prepared PVA/PAA-PO 4 showed excellent water stability and tensile strength besides competitive uranium uptake capacity of 277.78 mg/g. Phosphate played a vital role in the structure of PVA/PAA-PO 4 for the attractive uranium uptake capacity. PVA/PAA-PO 4 was characterized by SEM, XPS, FT-IR and omnipotence machine. The effects of pH, ionic strength, oscillation time, initial uranium concentration and temperature on the uranium adsorption with PVA/PAA-PO 4 were studied. The elution with different kinds of acids was conducted and the reusability through the adsorption-desorption cycle test was carried out. The work provided a promising candidate for uranium separation from aqueous solution.