Nanostructured spinel-type M(M = Mg, Co, Zn)Cr2O4 oxides: novel adsorbents for aqueous Congo red removal

doi:10.1016/j.mtchem.2021.100593

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	Nanostructured spinel-type M(M = Mg, Co, Zn)Cr2O4 oxides: novel adsorbents for aqueous Congo red removal
	Gao, H. J.1,2,3; Wang, S. F.1,2; Fang, L. M.4; Sun, G. A.4; Chen, X. P.4; Tang, S. N.1,2; Yang, H.3; Sun, G. Z.1,2; Li, D. F.5
刊名	MATERIALS TODAY CHEMISTRY
	2021-12
卷号	22
关键词	Adsorbent Polyacrylamide gel method Adsorption performance Synergistic effect Thermodynamic studies
ISSN号	2468-5194
DOI	10.1016/j.mtchem.2021.100593
英文摘要	Nanostructured spinel-type M(M = Mg, Co, Zn)Cr2O4 oxides with novel adsorbents for aqueous Congo red removal were synthesized by a polyacrylamide gel method and studied for their phase structure, microstructure, adsorption performance, and multiferroic behavior. The phase structure and purity analysis revealed that the nanostructured spinel-type M(M = Mg, Co, Zn)Cr2O4 oxides presented a spinel-type cubic structure, and the formation of a secondary phase such as Cr2O3, MgO, ZnO, or Co3O4 was not observed. The microstructure characterization confirmed that the spinel-type MCr2O4 oxides grew from fine spherical particles to large rhomboid particles. Adsorption experiments of spinel-type MCr2O4 oxides for adsorption of Congo red dye were fitted well with the pseudo-second-order kinetics. The adsorption capacity of the ZnCr2O4 oxide (44.038 mg/g, pH 7, temperature 28 degrees C, initial dye concentration 30 mg/L) was found to be higher than that of MgCr2O4 oxide (43.592 mg/g, pH 7, tem-perature 28 degrees C) and CoCr2O4 oxide (28.718 mg/g, pH 7, temperature 28 degrees C). The effects of initial adsorbent concentration, initial dye concentration, pH, and temperature between the ZnCr2O4 oxide and Congo red dye at which optimal removal occurs, were performed. The thermodynamic studies confirmed that a high temperature favors the adsorption of Congo red dye onto ZnCr2O4 oxide studied. The nanostructured spinel-type M(M = Mg, Co, Zn)Cr2O4 oxides that exhibited high adsorption performance for adsorption of Congo red dye can be ascribed to the synergistic effect of electrostatic interaction, pore filling, and ion exchange. The present work suggested that the nanostructured spinel-type M(M = Mg, Co, Zn)Cr2O4 oxides have excellent adsorption performance and multiferroic behavior, which shows potential applications for removal of the Congo red dye from wastewater, magnetic memory recording media, magnetic sensor, energy collection and conversion device, and read/write memory. (C) 2021 Elsevier Ltd. All rights reserved.
WOS研究方向	Chemistry ; Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000708675900007
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/149981]
专题	兰州理工大学
作者单位	1.Chongqing Three Gorges Univ, Sch Elect & Informat Engn, Chongqing 404000, Peoples R China; 2.Chongqing Three Gorges Univ, Chongqing Key Lab Geol Environm Monitoring & Disa, Chongqing 404000, Peoples R China; 3.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China; 4.China Acad Engn Phys, Inst Nucl Phys & Chem, Mianyang 621900, Sichuan, Peoples R China; 5.Chongqing Univ Posts & Telecommun, Sch Sci, Chongqing 400065, Peoples R China
推荐引用方式 GB/T 7714	Gao, H. J.,Wang, S. F.,Fang, L. M.,et al. Nanostructured spinel-type M(M = Mg, Co, Zn)Cr2O4 oxides: novel adsorbents for aqueous Congo red removal[J]. MATERIALS TODAY CHEMISTRY,2021,22.
APA	Gao, H. J..,Wang, S. F..,Fang, L. M..,Sun, G. A..,Chen, X. P..,...&Li, D. F..(2021).Nanostructured spinel-type M(M = Mg, Co, Zn)Cr2O4 oxides: novel adsorbents for aqueous Congo red removal.MATERIALS TODAY CHEMISTRY,22.
MLA	Gao, H. J.,et al."Nanostructured spinel-type M(M = Mg, Co, Zn)Cr2O4 oxides: novel adsorbents for aqueous Congo red removal".MATERIALS TODAY CHEMISTRY 22(2021).