期刊
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
卷 124, 期 -, 页码 289-295出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jpcs.2018.10.001
关键词
NiCO2O4; Nanosheets; Adsorption; Congo red
资金
- National Science Foundation of China [21806129, 51872238, 51704242]
- Fundamental Research Funds for the Central Universities [3102018zy045]
- Natural Science Basic Research Plan in Shaanxi Province of China [2017JQ5116]
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.
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