A facile synthesis of nanosheet-structured barium carbonate spheres with a superior adsorption capacity for Cr(VI) removal

A feasible strategy is demonstrated here for low-cost and rapid synthesis of nanosheet-structured BaCO 3 spheres (NSBCs) on a large scale. Experiments reveal that NSBCs were developed from amorphous precursor under the mediation of phosphate. Their nanosheet-composed structures facilitate the rapid...

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Bibliographic Details
Published in:Journal of materials science 2018-03, Vol.53 (6), p.4078-4088
Main Authors: Su, Yiping, Cui, Mingfang, Zhu, Jianhua, Wu, Yayu, Wei, Yaping, Bian, Shicong
Format: Article
Language:English
Subjects:
Adsorption
Aqueous solutions
Barium
Barium compounds
Carbonates
Characterization and Evaluation of Materials
Chemical Routes to Materials
Chemistry and Materials Science
Classical Mechanics
Comparative analysis
Contaminants
Crystallography and Scattering Methods
Endothermic reactions
Materials Science
Mediation
Nanosheets
Phosphates
Polymer Sciences
Solid Mechanics
Synthesis
Water treatment
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Summary:A feasible strategy is demonstrated here for low-cost and rapid synthesis of nanosheet-structured BaCO 3 spheres (NSBCs) on a large scale. Experiments reveal that NSBCs were developed from amorphous precursor under the mediation of phosphate. Their nanosheet-composed structures facilitate the rapid removal of contaminant of Cr(VI) within 60 min from aqueous solution, showing an excellent adsorption capacity ( q m,cal  = 227 mg/g, T  = 298 K). The kinetic and isotherm processes confirmed well to the pseudo-second-order model and Langmuir adsorption model, respectively. Thermodynamic analysis indicated that the adsorption process was spontaneous and endothermic. NSBCs show better Cr(VI) removal behaviour compared with commercial and some synthetic barium carbonate, which may have potential application in water treatment.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-017-1861-4