Preparation of Original and Calcined Layered Double Hydroxide as Low-Cost Adsorbents: The Role of the Trivalent Cation on Methylene Blue Adsorption

被引：3
|
作者：
Trujillano, Raquel [1 ]
Rives, Vicente [1 ]
Miguel, Rodrigo [1 ]
Gonzalez, Beatriz [1 ]
机构：
[1] Univ Salamanca, Dept Quim Inorgan, Salamanca 37008, Spain
来源：
MOLECULES | 2023年 / 28卷 / 12期
关键词：
hydrotalcite; memory effect; adsorption; methylene blue; TRANSITION-METAL CATIONS; ANIONIC CLAYS; SAMPLES;
D O I：
10.3390/molecules28124717
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Layered double hydroxides with the hydrotalcite-like structure, containing Mg2+, Al3+, and Fe3+ (with different Al/Fe ratios) in the layers, have been synthesized and fully characterized, as have the mixed oxides formed upon their calcination at 500 & DEG;C. Both series of solids (original and calcined ones) have been tested for methylene blue adsorption. In the case of the Fe-containing sample, oxidation of methylene blue takes place simultaneously with adsorption. For the calcined samples, their reconstruction to the hydrotalcite-like structure plays an important role in their adsorption ability.
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页数：16
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