Innovative adsorbent based on graphene oxide decorated with Fe2O3/ZnO nanoparticles for removal of dipyrone from aqueous medium

被引：14
|
作者：
de Andrade, Murilo Barbosa [1 ]
Sestito Guerra, Ana Carolina [1 ]
Tonial dos Santos, Tassia Rhuna [1 ]
Pisano Mateus, Gustavo Affonso [2 ]
Bergamasco, Rosangela [1 ]
机构：
[1] Univ Estadual Maringa, Dept Chem Engn, Ave Colombo 5790, BR-87020900 Maringa, Parana, Brazil
[2] Univ Estadual Maringa, Dept Biotechnol Genet & Cell Biol, Ave Colombo 5790, BR-87020900 Maringa, Parana, Brazil
来源：
MATERIALS LETTERS | 2019年 / 238卷
关键词：
Dipyrone; Graphene oxide; Nanoparticles; Adsorption; DEGRADATION; PHARMACEUTICALS; COADSORPTION; ADSORPTION; COMPOSITE; DYE;
D O I：
10.1016/j.matlet.2018.11.168
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This study proposed the synthesis of a new adsorbent material (GO#Fe2O3/ZnO), through the association of graphene oxide with nanoparticles of oxides of iron and zinc to increase dipyrone adsorption efficiency. The synthesised materials were characterised by TEM and SEM enabling identification of all the materials used in the synthesis in the composition of the new adsorbent. The pseudo-second-order model was the one that best represented the kinetics of dipyrone adsorption on GO#Fe2O3/ZnO, while the Langmuir model presented better adjustment for adsorption isotherms, with a maximum capacity of 116.442 mg g(-1) at 318 K after 360 min of adsorption. The results indicated that the adsorption of dipyrone on GO#Fe2O3/ZnO was spontaneous above 298 K and endothermic according the thermodynamic parameters. The proposed adsorbent showed high efficiency, reaching 76% removal. Also, a interaction mechanism was proposed. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：233 / 236
页数：4
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