scholarly journals Ageing behaviour of unary hydroxides in trivalent metal salt solutions: Formation of layered double hydroxide (LDH)-like phases

2000 ◽  
Vol 23 (5) ◽  
pp. 355-359 ◽  
Author(s):  
Michael Rajamathi ◽  
P. Vishnu Kamath
Keyword(s):  
Layered Double Hydroxide ◽  
Metal Salt ◽  
Salt Solutions ◽  
Trivalent Metal ◽  
Ageing Behaviour ◽  
Double Hydroxide

Aqueous-phase synthesis of layered double hydroxide nanoplates as catalysts for the oxygen evolution reaction

2018 ◽  
Vol 47 (48) ◽  
pp. 17342-17348 ◽  
Author(s):  
Euiyoung Jung ◽  
Jae Kyeom Kim ◽  
Hyungsuk Choi ◽  
Min Hyung Lee ◽  
Taekyung Yu
Keyword(s):  
Aqueous Solution ◽  
Transition Metal ◽  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Aqueous Phase ◽  
Oxygen Evolution Reaction ◽  
Metal Salt ◽  
Catalytic Performance ◽  
Phase Synthesis ◽  
Double Hydroxide

Transition metal LDH nanoplates were synthesized by heating an aqueous solution containing a metal salt, PEG, and octylamine. The LDH nanoplates showed comparable electrochemical catalytic performance for the oxygen evolution reaction.

scholarly journals Silica@layered double hydroxide core–shell hybrid materials

2018 ◽  
Vol 47 (1) ◽  
pp. 143-149 ◽  
Author(s):  
Wing L. J. Kwok ◽  
Dana-Georgiana Crivoi ◽  
Chunping Chen ◽  
Jean-Charles Buffet ◽  
Dermot O'Hare
Keyword(s):  
Layered Double Hydroxide ◽  
Hybrid Materials ◽  
Metal Salt ◽  
Core Shell ◽  
Silica Nanospheres ◽  
Salt Addition ◽  
Double Hydroxide

Fine crystallisation of layered double hydroxide on silica nanospheres may be achieved by controlling reaction stirring speed and rate of metal salt addition.

scholarly journals Equilibrium, kinetic and thermodynamic studies of the uptake of copper by layered double hydroxide

2017 ◽  
Vol 71 (5) ◽  
pp. 429-437 ◽  
Author(s):  
Ayawei Nimibofa ◽  
Ekubo Tobin ◽  
Shooto David ◽  
Wankasi Donbebe ◽  
Dikio Dixon
Keyword(s):  
Layered Double Hydroxide ◽  
Metal Ion ◽  
Copper Ions ◽  
Metal Salt ◽  
Physical Adsorption ◽  
Second Order ◽  
Isotherm Models ◽  
Batch Adsorption ◽  
Order Kinetic ◽  
Double Hydroxide

This study explored the adsorption capacity of Mg/Al layered double hydroxide (LDH) for the removal of Cu2+ from aqueous solutions after synthesis and characterization. The effect of various operational parameters such as concentration, temperature and sorption time on the adsorption of Cu2+ was investigated using batch adsorption process experiments. It was found that layered double hydroxide (LDH) can be used as adsorbent for the removal of copper ions in aqueous solution containing low concentration of the metal salt. The average values of activation energy, isosteric heat of adsorption, entropy and enthalpy were 1.447, 12.9, 0.0137 and ?4.8390 kJ/mol, respectively. This shows that the adsorption of the metal ion on the adsorbent follows a physical adsorption mechanism. The kinetic results conform to pseudo-second order model (R2 = 0.9959) and second order kinetic model (R2 = 0.9952) while the adsorption characteristics of the adsorbent followed both Langmuir and Freundlich adsorption isotherm models.

Synthesis of Li–Al-carbonate layered double hydroxide in a metal salt-free system

2010 ◽  
Vol 20 (31) ◽  
pp. 6524 ◽  
Author(s):  
Meng-Chang Lin ◽  
Fu-Tsung Chang ◽  
Jun-Yen Uan
Keyword(s):  
Layered Double Hydroxide ◽  
Metal Salt ◽  
Free System ◽  
Double Hydroxide

scholarly journals Morphological control of poly(vinylidene fluoride)@layered double hydroxide composite fibers using metal salt anions and their enhanced performance for dye removal

RSC Advances ◽  
2017 ◽  
Vol 7 (74) ◽  
pp. 46576-46588 ◽  
Author(s):  
Qingqing Mei ◽  
Weiyang Lv ◽  
Miao Du ◽  
Qiang Zheng
Keyword(s):  
Layered Double Hydroxide ◽  
Dye Removal ◽  
Vinylidene Fluoride ◽  
Metal Salt ◽  
Electrospun Fibers ◽  
Composite Fibers ◽  
Morphological Control ◽  
Poly Vinylidene Fluoride ◽  
Loading Amount ◽  
Double Hydroxide

The morphology and loading amount of LDHs on PVDF electrospun fibers can be easily adjusted by varying the metal salt anions.

scholarly journals Methyl Orange Adsorption by Fe2O3@Co-Al-Layered Double Hydroxide

Proceedings ◽  
2020 ◽  
Vol 41 (1) ◽  
pp. 64
Author(s):  
Edris Jamshidi ◽  
Faranak Manteghi
Keyword(s):  
Aqueous Solution ◽  
Methyl Orange ◽  
Layered Double Hydroxide ◽  
Sodium Acetate ◽  
Adsorption Process ◽  
Magnetic Composite ◽  
Trivalent Metal ◽  
Vis Spectroscopy ◽  
Double Hydroxide ◽  
Double Hydroxides

A magnetic composite consisting of iron oxide and a cobalt–aluminum-layered double hydroxide, Fe2O3@Co-Al-layered double hydroxide was prepared through linking of Fe2O3 to Co-Al layered double hydroxide (LDH) by sodium acetate. Layered double hydroxides are generally described as [M2+1–xM3+x(OH)2] [An–x/n·mH2O], where M2+ and M3+ are divalent and trivalent metal cations, respectively, and A is an n-valent interlayer guest anion. The composite was characterized by XRD, FTIR and UV-Vis. spectroscopy methods. Afterwards, the composite was used for methyl-orange adsorption in aqueous solution. The UV–Vis spectrum indicates that the adsorption process was satisfying. In effect, after several washings of the composite, no decrease of the adsorption capacity was observed.

Removal of Methyl Orange from Aqueous Solutions by Using Zn-Al Layered Double Hydroxide as Photocatalyst

2015 ◽  
Vol 1 (2) ◽  
pp. 36-41
Author(s):  
Laura Cocheci ◽  
◽  
Ancuta-Corina Marcu ◽  
Paul Barvinschi ◽  
Aniela Pop
Keyword(s):  
Methyl Orange ◽  
Aqueous Solutions ◽  
Layered Double Hydroxide ◽  
Double Hydroxide
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