Polyaniline/oxidation etching graphitic carbon nitride composites for U(VI) removal from aqueous solutions

Polyaniline/oxidation etching g-C 3 N 4 composites (PANI/OCN) were synthesized through an oxidative polymerization method and applied to remove U(VI)from aqueous solution as an adsorbent. The PANI/OCN showed high maximum adsorption capacity ( q m = 312.5 mg g −1 , T = 293 K, pH = 5), which was hig...

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Veröffentlicht in:	Journal of radioanalytical and nuclear chemistry 2019-09, Vol.321 (3), p.1005-1017
Hauptverfasser:	Liu, Jinxiang, Chen, Zigeng, Yu, Kun, Liu, Yingjiu, Ge, Yujie, Xie, Shuibo
Format:	Artikel
Sprache:	eng
Schlagworte:	Adsorbents Adsorption Aqueous solutions Carbon nitride Chemistry Chemistry and Materials Science Composite materials Diagnostic Radiology Etching Hadrons Heavy Ions Inorganic Chemistry Kinetic equations Nitrides Nuclear Chemistry Nuclear Physics Oxidation Physical Chemistry Polyanilines Polymerization Uranium
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Zusammenfassung:	Polyaniline/oxidation etching g-C 3 N 4 composites (PANI/OCN) were synthesized through an oxidative polymerization method and applied to remove U(VI)from aqueous solution as an adsorbent. The PANI/OCN showed high maximum adsorption capacity ( q m = 312.5 mg g −1 , T = 293 K, pH = 5), which was higher than OCN and many other adsorbents,and extremely fast adsorption rate (in 10 min). The adsorption process was fitted well to the pseudo-second-order kinetic equation and Langmuir model. Adsorption–desorption experiment revealed the good reusability of PANI/OCN. This study provides a potential composite with excellent performance for U(VI) removal.
ISSN:	0236-5731 1588-2780
DOI:	10.1007/s10967-019-06660-0