Study of Congo Red and Methyl Orange Removal from Aqueous Solutions by Silica-Based Microspheres

被引：0
|
作者：
Li, H. Q. [1 ]
Cao, Y. X. [1 ]
Chen, X. T. [1 ]
Liu, F. [1 ]
机构：
[1] Xinzhou Normal Univ, Xinzhou 034000, Peoples R China
来源：
RUSSIAN JOURNAL OF GENERAL CHEMISTRY | 2024年 / 94卷 / 05期
关键词：
silica-based microspheres; adsorption; dye removal; Congo red; methyl orange; THERMODYNAMIC PARAMETERS; ADSORPTION; NANOPARTICLES; EQUILIBRIUM; COMPOSITE; EFFICIENT; CONSTANT; CHITOSAN; BLUE; CTAB;
D O I：
10.1134/S1070363224050128
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Silica-based microspheres were synthesized by modified Stober method. The structure characteristic and the adsorption capacity of microspheres calcined and uncalcined for dyes, Congo red and methyl orange, were compared. The uncalcined microspheres showed better adsorption performance for the two dyes and the cause was analyzed. The adsorption process of microspheres for the two dyes accorded with the pseudo-second-order kinetic model. Both Langmuir isotherm and Freundlich isotherm could fit the experimental data well. The maximum adsorption capacity of microspheres for Congo red and methyl orange could reach 416.67 and 285.71 mg/g, respectively, according to the Langmuir isotherm model. It was inferred that the spontaneous adsorption process was endothermic and driven mainly by physical adsorption through thermodynamic parameters calculated.
引用
收藏
页码：1139 / 1146
页数：8
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