Synthesis poly(hydroxamic acid) by modification of polyacrylamide hydrogels with hydroxylamine hydrochloride and application for adsorption of La(III), Pr(III) ions

Trinh Duc Cong, Hoang Thi Phuong, Nguyen Thi Thuc, Nguyen Van Manh, Nguyen Van Khoi
Author affiliations

Authors

  • Trinh Duc Cong
  • Hoang Thi Phuong
  • Nguyen Thi Thuc
  • Nguyen Van Manh
  • Nguyen Van Khoi

DOI:

https://doi.org/10.15625/7639

Keywords:

Poly(hydroxamic acid), adsorption, ion-exchange, Praseodymium, Lanthanum

Abstract

Poly(hydroxamic acid) (PHA) was synthesised by modification of polyacrylamide hydrogels with hydroxylamine. Some effects such as temperature, time, hydroxylamine hydrochloride concentrations and pH on hydroxamic acid functional groups were studied. The results showed that hydroxamic acid functional groups in polymer is the highest in following conditions: 30 oC temperature; 24 hour, 3.3 M NH2OH.HCl concentrations and pH = 14. Beside, PHA was characterized by fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM). PHA were also applied for adsorption of La(III) and Pr(III) ions. The adsorption of La(III) and Pr(III) ions on poly(hydroxamic acid) conformed to linear form Langmuir adsorption isotherm, maximum capacities for La(III), Pr(III) were found as 234.19 and 209.64 mg/g at pH = 6, respectively.

Keywords. Poly(hydroxamic acid), adsorption, ion-exchange, Praseodymium, Lanthanum.

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Published

01-12-2015

How to Cite

Cong, T. D., Phuong, H. T., Thuc, N. T., Manh, N. V., & Khoi, N. V. (2015). Synthesis poly(hydroxamic acid) by modification of polyacrylamide hydrogels with hydroxylamine hydrochloride and application for adsorption of La(III), Pr(III) ions. Vietnam Journal of Chemistry, 53(5), 663. https://doi.org/10.15625/7639

Issue

Vol. 53 No. 5 (2015)

Section

Articles