Adsorption of direct yellow dye from aqueous solution by Ni/Al and Zn/Al layered double hydroxides

2018 ◽  
Author(s):  
Neza Rahayu Palapa ◽  
Risfidian Mohadi ◽  
Aldes Lesbani
Keyword(s):  
Aqueous Solution ◽  
Layered Double Hydroxides ◽  
Double Hydroxides

Congo red and direct yellow dye removal from aqueous solution by Zn/Cr layered double hydroxides

2018 ◽  
Author(s):  
Bakri Rio Rahayu ◽  
Tarmizi Taher ◽  
Poedji Loekitowati Hariani ◽  
Aldes Lesbani
Keyword(s):  
Aqueous Solution ◽  
Layered Double Hydroxides ◽  
Congo Red ◽  
Dye Removal ◽  
Double Hydroxides

Removal of Benzoate Anions from Aqueous Solution Using Mg-Al Layered Double Hydroxides

2003 ◽  
Vol 390 (1) ◽  
pp. 49-56 ◽  
Author(s):  
Lucelena Patricio Cardoso ◽  
Jairo Tronto ◽  
Eduardo Luis Crepaldi ◽  
João Barros Valim
Keyword(s):  
Aqueous Solution ◽  
Layered Double Hydroxides ◽  
Double Hydroxides

Performances and mechanisms of Mg/Al and Ca/Al layered double hydroxides for graphene oxide removal from aqueous solution

2016 ◽  
Vol 297 ◽  
pp. 106-115 ◽  
Author(s):  
Jian Wang ◽  
Xiangxue Wang ◽  
Liqiang Tan ◽  
Yuantao Chen ◽  
Tasawar Hayat ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Layered Double Hydroxides ◽  
Oxide Removal ◽  
Double Hydroxides

scholarly journals Luminescent Layered Double Hydroxides Intercalated with an Anionic Photosensitizer via the Memory Effect

Crystals ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 153 ◽  
Author(s):  
Alexandre Teixeira ◽  
Alysson Morais ◽  
Ivan Silva ◽  
Eric Breynaert ◽  
Danilo Mustafa
Keyword(s):  
Aqueous Solution ◽  
Memory Effect ◽  
Layered Double Hydroxides ◽  
Efficient Energy Transfer ◽  
Efficient Energy ◽  
Calcination Temperatures ◽  
Anionic Species ◽  
Benzenetricarboxylic Acid ◽  
Double Hydroxides ◽  
Rehydration Process

Layered double hydroxides (LDHs) containing Eu3+ activators were synthesized by coprecipitation of Zn2+, Al3+, and Eu3+ in alkaline NO3−-rich aqueous solution. Upon calcination, these materials transform into a crystalline ZnO solid solution containing Al and Eu. For suitably low calcination temperatures, this phase can be restored to LDH by rehydration in water, a feature known as the memory effect. During rehydration of an LDH, new anionic species can be intercalated and functionalized, obtaining desired physicochemical properties. This work explores the memory effect as a route to produce luminescent LDHs intercalated with 1,3,5-benzenetricarboxylic acid (BTC), a known anionic photosensitizer for Eu3+. Time-dependent hydration of calcined LDHs in a BTC-rich aqueous solution resulted in the recovery of the lamellar phase and in the intercalation with BTC. The interaction of this photosensitizer with Eu3+ in the recovered hydroxide layers gave rise to efficient energy transfer from the BTC antennae to the Eu3+ ions, providing a useful tool to monitor the rehydration process of the calcined LDHs.

A composite of Ni–Fe–Zn layered double hydroxides/biochar for atrazine removal from aqueous solution

Biochar ◽  
2020 ◽  
Vol 2 (4) ◽  
pp. 455-464
Author(s):  
Yifan Wang ◽  
Jiaming Kang ◽  
Simeng Jiang ◽  
Hui Li ◽  
Zheyi Ren ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Layered Double Hydroxides ◽  
Double Hydroxides

scholarly journals Evaluation of Mg/Al Layered Double Hydroxides as Adsorbent Material for Adsorptive Removal of Congo Red (Acid Red 28) Azodye from Aqueous Solution

2020 ◽  
Vol 32 (9) ◽  
pp. 2381-2388
Author(s):  
LAM VAN TAN ◽  
HONG THAM NGUYEN THI ◽  
TO UYEN DAO THI ◽  
VAN THUAN TRAN
Keyword(s):  
Aqueous Solution ◽  
Layered Double Hydroxides ◽  
Congo Red ◽  
Organic Dyes ◽  
Synthesis Temperature ◽  
Inorganic Layer ◽  
Adsorptive Removal ◽  
Ft Ir ◽  
Ir Analysis ◽  
Double Hydroxides

The use of inorganic layer compounds as adsorbents for organic dyes in water treatment is of increasing interest. In this study, an attempt is made for the synthesis of Mg/Al LDHs by the hydrothermal method. The synthesis temperature was found to significantly affect to the structure of layered double hydroxides (LDHs), as pointed out by FT-IR analysis. In addition, an adsorption capacity of the synthesized LDHs against Congo red in aqueous solutions was investigated and also compared the adsorption results with other dyes such as methylene blue and methyl orange.

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