CTAB and SDS assisted facile fabrication of SnO2 nanoparticles for effective degradation of carbamazepine from aqueous phase: A systematic and comparative study of their degradation performance

被引:57
作者
Begum, Shamima [1 ]
Ahmaruzzaman, M. [1 ]
机构
[1] Natl Inst Technol, Dept Chem, Silchar 788010, India
关键词
SnO2; nanoparticles; Aspartic acid anhydrous; CTAB; SDS; Carbamazepine; UV-C light; WASTE-WATER TREATMENT; PHOTOCATALYTIC DEGRADATION; MEDIATED FACILE; METHYLENE-BLUE; QUANTUM DOTS; PHARMACEUTICALS; PHOTODEGRADATION; OXIDATION; KINETICS; TIO2;
D O I
10.1016/j.watres.2017.11.031
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In the present study, snO(2) nanoparticles were successfully synthesized by chemical precipitation method using anhydrous aspartic acid and surfactant at two annealing temperatures, 300 degrees C and 600 degrees C. The effect of surfactants cationic CTAB and anionic SDS on the synthesized SnO2 nanoparticles (NPs) were studied elaborately. In this article, for the first time, SnO2 NPs were employed as an excellent photo catalyst in the degradation of carbamazepine (CBZ), a popular antiepileptic drug which is most commonly detected pharmaceutically active compounds (PhACs) in municipal wastewater under UV-C light irradiation. Comparative studies between the photocatalytic activity of SnO2 NPs synthesized with CTAB (SC1) and SDS (SS1) on the degradation of the CBZ drug were investigated. Parameters like the effect of catalytic loading, initial concentration, pH and contact time were also studied for optimization. The results indicate that SC1 is a better photocatalyst with rate constant 6.66 x 10(-2) min(-1) than SS1 with rate 5.7 x 10(-2) min(-1). To determine the transformation product formed on the photodegradation LCMS (ESI) analysis was done. The synthesized SnO2 NPs can be recycled up to 8th cycles without any notable alteration in its photocatalytic activity. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码:470 / 485
页数:16
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