Metal composition of layered double hydroxides (LDHs) regulating ClO−4 adsorption to calcined LDHs via the memory effect and hydrogen bonding

2014 ◽  
Vol 26 (3) ◽  
pp. 493-501 ◽  
Author(s):  
Yajie Lin ◽  
Qile Fang ◽  
Baoliang Chen
Keyword(s):  
Hydrogen Bonding ◽  
Memory Effect ◽  
Layered Double Hydroxides ◽  
Metal Composition ◽  
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.

scholarly journals Boosting the Supercapacitive Behavior of CoAl Layered Double Hydroxides via Tuning the Metal Composition and Interlayer Space

2020 ◽  
Vol 3 (6) ◽  
pp. 499-509 ◽  
Author(s):  
Alvaro Seijas‐Da Silva ◽  
Roger Sanchis‐Gual ◽  
Jose A. Carrasco ◽  
Víctor Oestreicher ◽  
Gonzalo Abellán ◽  
...  
Keyword(s):  
Layered Double Hydroxides ◽  
Interlayer Space ◽  
Metal Composition ◽  
Double Hydroxides

Adsorption and intercalation of Acid Blue 9 on Mg–Al layered double hydroxides of variable metal composition

Polyhedron ◽  
2007 ◽  
Vol 26 (14) ◽  
pp. 3479-3490 ◽  
Author(s):  
Anthony R. Auxilio ◽  
Philip C. Andrews ◽  
Peter C. Junk ◽  
Leone Spiccia ◽  
Daniel Neumann ◽  
...  
Keyword(s):  
Layered Double Hydroxides ◽  
Metal Composition ◽  
Double Hydroxides ◽  
Acid Blue
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