Preparation, Characterization and Enhanced photocatalytic degradation of Organic pollutants using Layered Double Hydroxides

2018 ◽  
Vol 5 (2) ◽  
pp. 8981-8985 ◽  
Author(s):  
T. Dhanasekaran ◽  
A. Padmanaban ◽  
G. Gnanamoorthy ◽  
S. Praveen kumar ◽  
S. Munusamy ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Organic Pollutants ◽  
Layered Double Hydroxides ◽  
Double Hydroxides

scholarly journals Photocatalytic Degradation of 2,4,6-Trichlorophenol by MgO–MgFe2O4 Derived from Layered Double Hydroxide Structures

Catalysts ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 454 ◽  
Author(s):  
Esthela Ramos-Ramírez ◽  
Francisco Tzompantzi-Morales ◽  
Norma Gutiérrez-Ortega ◽  
Héctor G. Mojica-Calvillo ◽  
Julio Castillo-Rodríguez
Keyword(s):  
Photocatalytic Degradation ◽  
Layered Double Hydroxides ◽  
X Ray Diffraction ◽  
Application Study ◽  
Toxic Compounds ◽  
X Ray ◽  
Thermally Activated ◽  
Double Hydroxide ◽  
Double Hydroxides ◽  
Scanning Electron

In recent years, the search for solutions for the treatment of water pollution by toxic compounds such as phenols and chlorophenols has been increasing. Phenols and their derivatives are widely used in the manufacture of pesticides, insecticides, paper, and wood preservers, among other things. Chlorophenols are partially biodegradable but not directly photodegradable by sunlight and are extremely toxic—especially 2,4,6-trichlorophenol, which is considered to be potentially carcinogenic. As a viable proposal to be applied in the treatment of water contaminated with 2,4,6-trichlorophenol, this paper presents an application study of the thermally activated Mg/Fe layered double hydroxides as photocatalysts for the mineralization of this contaminant. Activated Mg/Fe layered double hydroxides were characterized by X-ray diffraction, thermal analysis, N2 physisorption, and scanning electron microscopy with X-ray dispersive energy. The results of the photocatalytic degradation of 2,4,6-trichlorophenol in aqueous solution showed good photocatalytic activity, with an efficiency of degradation of up to 93% and mineralization of 82%; degradation values which are higher than that of TiO2-P25, which only reached 18% degradation. The degradation capacity is attributed to the structure of the MgO–MgFe2O4 oxides derived from double laminate hydroxide Mg/Fe. A path of degradation based on a mechanism of superoxide and hollow radicals is proposed.

Layered double hydroxides-based photocatalysts and visible-light driven photodegradation of organic pollutants: A review

2020 ◽  
Vol 392 ◽  
pp. 123684 ◽  
Author(s):  
Guanhua Zhang ◽  
Xueqiang Zhang ◽  
Yue Meng ◽  
Guoxiang Pan ◽  
Zheming Ni ◽  
...  
Keyword(s):  
Visible Light ◽  
Organic Pollutants ◽  
Layered Double Hydroxides ◽  
Visible Light Driven ◽  
Double Hydroxides

Photocatalytic degradation of 2,4-dichlorophenol with MgAlTi mixed oxides catalysts obtained from layered double hydroxides

2013 ◽  
Vol 263 ◽  
pp. 67-72 ◽  
Author(s):  
G. Mendoza-Damián ◽  
F. Tzompantzi ◽  
A. Mantilla ◽  
A. Barrera ◽  
L. Lartundo-Rojas
Keyword(s):  
Photocatalytic Degradation ◽  
Layered Double Hydroxides ◽  
Mixed Oxides ◽  
Double Hydroxides
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