Facile fabrication of porous NiCo2O4 nanosheets with high adsorption performance toward Congo red

被引：49

作者：

Bao, Yaqi ^{[1
]}

Qin, Ming ^{[2
]}

Yu, Yinkai ^{[2
]}

Zhang, Limin ^{[2
]}

Wu, Hongjing ^{[2
]}

机构：

[1] China Univ Geosci Wuhan, Fac Mat Sci & Chem, Wuhan 430074, Hubei, Peoples R China

[2] Northwestern Polytech Univ, Dept Appl Phys, Sch Sci, Xian 710072, Shaanxi, Peoples R China

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2019年 / 124卷

基金：

美国国家科学基金会;

关键词：

NiCO2O4; Nanosheets; Adsorption; Congo red; HOLLOW MICROSPHERES; ENHANCED ADSORPTION; EFFECTIVE REMOVAL; AQUEOUS-SOLUTION; METHYLENE-BLUE; ORGANIC-DYES; KINETICS; DECOLORIZATION; CAPACITY; SHELL;

D O I：

10.1016/j.jpcs.2018.10.001

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this work, porous NiCo2O4 nanosheets have been fabricated by a facile hydrothermal method. The morphology as well as crystalline structure of products was tested by XRD, FTIR, N-2 adsorption-desorption isotherms and TEM. The composite exhibited excellent adsorptive removal capacity toward Congo red (CR), and the maximum adsorption capacity was up to 961.5 mg/g. The best adsorption performance was achieved in the CR solution without adjusting of pH. Adsorption accords with Langmuir isothermal adsorption model and the adsorption kinetic model is more in line with the pseudo-second order model. According to the adsorption mechanism investigation, adsorption was not caused by the electrostatic attractions but may be the formation of ionic bonding between metal ion in composite and -SO3- in CR. The NiCo2O4 nanosheets can be a good alternative for the high-performance Congo red adsorbent.

引用

页码：289 / 295

页数：7

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