Removal of trivalent chromium from aqueous solutions by amphiphilic core-shell poly(methyl acrylate)/silk sericin nanospheres

Y. Song; Y. Jin; J. Sun; D. Wei

Published : 2022-08-26

Vol. 52 No. 11-12 (2007)

Removal of trivalent chromium from aqueous solutions by amphiphilic core-shell poly(methyl acrylate)/silk sericin nanospheres

Y. Song Y. Jin J. Sun D. Wei

Abstract

Well-defined, core-shell poly(methyl acrylate/silk sericin) (PMA-SS) nanospheres, ranging from 100 to 150nm in diameter, were prepared via a direct graft copolymerisation of methyl acrylate (MA) with silk sericin (SS). The polymerisation was induced by a small amount of tert-butyl hydroperoxide (TBHP) in water at temp. 353K. The PMA-SS core-shell nanospheres were used as adsorbent in a series of batch adsorption experiments for the removal of trivalent chromium from aqueous solutions. The experimental results showed that PMA-SS nanospheres were an effective adsorbent for trivalent chromium from aqueous solution, and the maximum amount of adsorption reached 4.876mg Cr3+/g of sorbent within the experimental range. With the increase in pH values of solutions, the adsorption increased obviously, while the addition of electrolyte had a little effect on the adsorption. The adsorption equilibrium was reached after about 3h. The adsorption of trivalent chromium by PMA-SS nanospheres was significantly higher than that done by SS powder under the same adsorption conditions.

Keywords

trójwartościowe jony chromu ; adsorpcja ; serycyna ; poli(akrylan metylu) ; nadtlenek tert-butylu ; struktura typu rdzeń-otoczka ; nanosfery trivalent chromium ions ; adsorption ; silk sericin ; poly(methyl acrylate) ; tert-butyl hydroperoxide ; core-shell structure ; nanospheres

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Song, Y., Jin, Y., Sun, J., & Wei, D. (2022). Removal of trivalent chromium from aqueous solutions by amphiphilic core-shell poly(methyl acrylate)/silk sericin nanospheres. Polimery, 52(11-12), 880–884. Retrieved from https://ichp.vot.pl/index.php/p/article/view/1484

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Y. Song songyan@em.jpu.edu.cn

Affiliation
Jiangsu Polytechnic University, Department of Materials Science and Engineering, Changzhou 213016, China,

Y. Jin

J. Sun

D. Wei