Harnessing self-supported Au nanoparticles on layered double hydroxides comprising Zn and Al for enhanced phenol decomposition under solar light

2016 ◽  
Vol 199 ◽  
pp. 260-271 ◽  
Author(s):  
Gaku Mikami ◽  
Florentina Grosu ◽  
Shogo Kawamura ◽  
Yusuke Yoshida ◽  
Gabriela Carja ◽  
...  
Keyword(s):  
Layered Double Hydroxides ◽  
Au Nanoparticles ◽  
Solar Light ◽  
Phenol Decomposition ◽  
Double Hydroxides

Efficient thermal- and photocatalysts made of Au nanoparticles on MgAl-layered double hydroxides for energy and environmental applications

2019 ◽  
Vol 21 (39) ◽  
pp. 21798-21805 ◽  
Author(s):  
Hao Zhou ◽  
Yanhui Zhang
Keyword(s):  
Catalytic Activity ◽  
Layered Double Hydroxides ◽  
Au Nanoparticles ◽  
Environmental Applications ◽  
Double Hydroxides

We compared the effect of the surfactant PVP on the catalyst and found that Au/MgAl-LDHs had better catalytic activity than (PVP@Au)/MgAl-LDHs.

Harvesting solar light on a tandem of Pt or Pt-Ag nanoparticles on layered double hydroxides photocatalysts for p-nitrophenol degradation in water

2019 ◽  
Vol 182 ◽  
pp. 105250 ◽  
Author(s):  
Mihaela Darie ◽  
Elena M. Seftel ◽  
Myriam Mertens ◽  
Radu G. Ciocarlan ◽  
Pegie Cool ◽  
...  
Keyword(s):  
Layered Double Hydroxides ◽  
Ag Nanoparticles ◽  
Solar Light ◽  
Nitrophenol Degradation ◽  
Double Hydroxides

NADH Regeneration Promoted by Solar Light Using Gold Nanoparticles/Layered Double Hydroxides as Novel Photocatalytic Nanoplatforms

2021 ◽  
Vol 6 (39) ◽  
pp. 10514-10523
Author(s):  
Elena‐Florentina Grosu ◽  
Jean‐Sébastien Girardon ◽  
Gabriela Carja ◽  
Renato Froidevaux
Keyword(s):  
Gold Nanoparticles ◽  
Layered Double Hydroxides ◽  
Solar Light ◽  
Nadh Regeneration ◽  
Double Hydroxides

Acceptorless amine dehydrogenation and transamination using Pd-doped layered double hydroxides

2018 ◽  
Author(s):  
Diana Ainembabazi ◽  
Nan An ◽  
Jinesh Manayil ◽  
Kare Wilson ◽  
Adam Lee ◽  
...  
Keyword(s):  
Layered Double Hydroxides ◽  
Oxidation States ◽  
Secondary Amines ◽  
Primary Amines ◽  
Acid Dissolution ◽  
Oxidative Amination ◽  
Strong Function ◽  
Excellent Activity ◽  
High Yields ◽  
Double Hydroxides

<div> <p>The synthesis, characterization, and activity of Pd-doped layered double hydroxides (Pd-LDHs) for for acceptorless amine dehydrogenation is reported. These multifunctional catalysts comprise Brønsted basic and Lewis acidic surface sites that stabilize Pd species in 0, 2+, and 4+ oxidation states. Pd speciation and corresponding cataytic performance is a strong function of metal loading. Excellent activity is observed for the oxidative transamination of primary amines and acceptorless dehydrogenation of secondary amines to secondary imines using a low Pd loading (0.5 mol%), without the need for oxidants. N-heterocycles, such as indoline, 1,2,3,4-tetrahydroquinoline, and piperidine, are dehydrogenated to the corresponding aromatics with high yields. The relative yields of secondary imines are proportional to the calculated free energy of reaction, while yields for oxidative amination correlate with the electrophilicity of primary imine intermediates. Reversible amine dehydrogenation and imine hydrogenation determine the relative imine:amine selectivity. Poisoning tests evidence that Pd-LDHs operate heterogeneously, with negligible metal leaching; catalysts can be regenerated by acid dissolution and re-precipitation.</p> </div> <br>

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