TY - JOUR
T1 - Extraction property of p-tert-butylsulfonylcalix[4]arene possessing irradiation stability towards cesium(I) and strontium(II)
AU - Liu, Cong
AU - Zhang, Dongxiang
AU - Zhao, Liting
AU - Zhang, Peng
AU - Lu, Xin
AU - He, Shengnan
N1 - Publisher Copyright:
© 2016 by the authors.
PY - 2016/7/28
Y1 - 2016/7/28
N2 - Solvent extraction behavior of p-tert-butylsulfonylcalix[4]arene (SC4A) towards Cs(I) and Sr(II) from aqueous solutions was studied with respect to the effects of contact time, pH value, SC4A concentration, nitrate concentration and temperature. The extraction of Na(I), K(I), Mg(II), Ca(II), Ba(II), Pb(II), Cd(II), Zn(II), Co(II), Ni(II), and Ce(III) was also investigated. It was demonstrated that SC4A can sequester both Cs(I) and Sr(II) efficiently from aqueous solutions. According to extraction experiments, Fourier transform infrared and 1H nuclear magnetic resonance analysis of the metal-SC4A complex, authors proposed a possible mechanism involving formation of an adjustable cavity from two SC4A molecules for the complexation of one alkaline earth metal ion, and the size of the adjustable cavity changes depending on the ion within an appropriate range. Irradiation stability of the SC4A was tested, the results indicated that the main structure of SC4A remained unchanged when the temperature was below 400 °C, and SC4A maintains excellent extraction ability for Cs(I) and Sr(II) under an irradiation dose of 1.0 × 104~1.1 × 106 Gy.
AB - Solvent extraction behavior of p-tert-butylsulfonylcalix[4]arene (SC4A) towards Cs(I) and Sr(II) from aqueous solutions was studied with respect to the effects of contact time, pH value, SC4A concentration, nitrate concentration and temperature. The extraction of Na(I), K(I), Mg(II), Ca(II), Ba(II), Pb(II), Cd(II), Zn(II), Co(II), Ni(II), and Ce(III) was also investigated. It was demonstrated that SC4A can sequester both Cs(I) and Sr(II) efficiently from aqueous solutions. According to extraction experiments, Fourier transform infrared and 1H nuclear magnetic resonance analysis of the metal-SC4A complex, authors proposed a possible mechanism involving formation of an adjustable cavity from two SC4A molecules for the complexation of one alkaline earth metal ion, and the size of the adjustable cavity changes depending on the ion within an appropriate range. Irradiation stability of the SC4A was tested, the results indicated that the main structure of SC4A remained unchanged when the temperature was below 400 °C, and SC4A maintains excellent extraction ability for Cs(I) and Sr(II) under an irradiation dose of 1.0 × 104~1.1 × 106 Gy.
KW - Calixarene
KW - Cesium
KW - Extraction
KW - Irradiation
KW - Strontium
UR - https://www.scopus.com/pages/publications/84984617494
U2 - 10.3390/app6080212
DO - 10.3390/app6080212
M3 - Article
AN - SCOPUS:84984617494
SN - 2076-3417
VL - 6
JO - Applied Sciences (Switzerland)
JF - Applied Sciences (Switzerland)
IS - 8
M1 - 212
ER -