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.

引用

页数：16

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