Abstract: Magnetite; Boehmite; Composites; Chromium; Heteroaggregation © 2020 The Author(s)In this work, AlOOH–Fe3O4 powder nanocomposites for Cr(VI) adsorption were obtained for the first time using oppositely charged boehmite and citric acid modified magnetite sols. The process of heteroaggregation of oppositely charged AlOOH and Fe3O4 nanoparticles was also studied as one of the stages in the preparation of adsorption active material. Сomposition, surface area, porous structure, thermal and surface properties, adsorption efficiency, and regenerability of nanocomposites were investigated using a wide range of analytical methods. It is noted that a low content of magnetite (2 wt.%) in the AlOOH–Fe3O4 composite promotes an increase in the surface area, weakly affects the Cr(VI) adsorption capacity, and imparts magnetic properties to the composite. Low cost, simplicity of preparation, high Cr(VI) adsorption capacity (up to 21 mg/g), and stability in cyclic use are the advantages of the obtained nanocomposites in comparison with similar systems. They can easily be separated from the purified liquid using a permanent magnet due to their magnetic properties. © 2020 The Author(s)

Cite: Mikhaylov V.I. , Martakov I.S. , Gerasimov E.Y. , Sitnikov P.A.
Study of Heteroaggregation and Properties of Sol-Gel AlOOH–Fe3O4 Composites
Heliyon. 2020. V.6. N12. e05825 :1-11. DOI: 10.1016/j.heliyon.2020.e05825 WOS Scopus РИНЦ AN PMID OpenAlex

Files: Full text from publisher

Dates:

Submitted:	Oct 16, 2020
Published print:	Dec 1, 2020
Accepted:	Dec 18, 2020
Published online:	Dec 28, 2020

Identifiers:

Web of science:	WOS:000605644400012
Scopus:	2-s2.0-85098491777
Elibrary:	45042973
Chemical Abstracts:	2023:725481
PMID:	33426333
OpenAlex:	W3118206834

Citing:

DB	Citing
Scopus	2
Web of science	2
Elibrary	3
OpenAlex	3

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