A new approach to improve sulfate uptake from contaminated aqueous solution: Metal layered double hydroxides functionalized metasomatic rock

2018 ◽  
Vol 54 (4) ◽  
pp. 447-466 ◽  
Author(s):  
Bahareh Sadeghalvad ◽  
Amirreza Azadmehr ◽  
Ardeshir Hezarkhani
Keyword(s):  
Aqueous Solution ◽  
Layered Double Hydroxides ◽  
Metasomatic Rock ◽  
Sulfate Uptake ◽  
New Approach ◽  
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.

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