Synthesis and highly efficient photocatalytic activity of mixed oxides derived from ZnNiAl layered double hydroxides

2016 ◽  
Vol 26 (9) ◽  
pp. 2380-2389 ◽  
Author(s):  
Li ZHANG ◽  
Chao-hua DAI ◽  
Xiu-xiu ZHANG ◽  
You-nian LIU ◽  
Jian-hui YAN
Keyword(s):  
Photocatalytic Activity ◽  
Layered Double Hydroxides ◽  
Mixed Oxides ◽  
Highly Efficient ◽  
Double Hydroxides

scholarly journals The influence of the UV irradiation intensity on photocatalytic activity of ZnAl layered double hydroxides and derived mixed oxides

2012 ◽  
Vol 18 (2) ◽  
pp. 295-303 ◽  
Author(s):  
Milica Hadnadjev-Kostic ◽  
Tatjana Vulic ◽  
Dmitar Zoric ◽  
Radmila Marinkovic-Neducin
Keyword(s):  
Photocatalytic Activity ◽  
Uv Irradiation ◽  
Layered Double Hydroxides ◽  
Mixed Oxide ◽  
Mixed Oxides ◽  
Uv Light ◽  
Light Irradiation ◽  
Irradiation Intensity ◽  
Uv Light Irradiation ◽  
Double Hydroxides

Layered double hydroxides (LDHs) have been studied to a great extent as environmental-friendly complex materials that can be used as photocatalysts or photocatalyst supports. ZnAl layered double hydroxides and their derived mixed oxides were chosen for the investigation of photocatalytic performances in correlation with the UV intensities measured in the South Pannonia region. Low supersaturation coprecipitation method was used for the ZnAl LDH synthesis. For the characterization of LDH and thermal treated samples powder X-ray diffraction (XRD), scanning electron microscopy (SEM), electron dispersive spectroscopy (EDS), nitrogen adsorption-desorption were used. The decomposition of azodye, methylene blue was chosen as photocatalytic test reaction. The study showed that the ZnAl mixed oxide obtained by thermal decomposition of ZnAl LDH has stable activity in the broader UV light irradiation range characterizing the selected region. Photocatalytic activity could be mainly attributed to the ZnO phase, detected both in LDH and thermally treated samples. The study showed that the ZnAl mixed oxide obtained by the calcination of ZnAl LDH has a stable activity within the measured UV light irradiation range; whereas the parent ZnAl LDH catalyst did not perform satisfactory when low UV irradiation intensity is implied.

scholarly journals Enhanced photocatalytic activity of TiO2-impregnated with MgZnAl mixed oxides obtained from layered double hydroxides for phenol degradation

2015 ◽  
Vol 357 ◽  
pp. 1765-1775 ◽  
Author(s):  
Marciano Fabiano de Almeida ◽  
Carlos Roberto Bellato ◽  
Ann Honor Mounteer ◽  
Sukarno Olavo Ferreira ◽  
Jaderson Lopes Milagres ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Layered Double Hydroxides ◽  
Mixed Oxides ◽  
Phenol Degradation ◽  
Double Hydroxides

Nanocomposite Photocatalyst Based on Layered Double Hydroxides (LDHs) Associated with TiO2

2014 ◽  
Vol 92 ◽  
pp. 100-109 ◽  
Author(s):  
Jonjaua Ranogajec ◽  
Andrijana Sever-Skapin ◽  
Ognjen Rudic ◽  
Snezana Vucetic
Keyword(s):  
Photocatalytic Activity ◽  
Layered Double Hydroxides ◽  
Direct Contact ◽  
Building Materials ◽  
Specific Problem ◽  
The Self ◽  
Different Types ◽  
Double Hydroxides ◽  
Positive Effect ◽  
Material Porosity

The surfaces of building materials are constantly exposed to the actions of environmental factors, pollutants of inorganic and organic origin as well as to microorganisms, which significantly contribute to corrosion phenomena.The application of coatings decreases the negative action of the pollutants minimizing their direct contact with the substrate. Different types of coatings with additional functions have been developed. A specific problem of these applications is the lack of compatibility of the photocatalysts with the surface of the building materials and the detachment of potentially toxic TiO2nanoparticles. In the present study, this problem was solved by the proper immobilization of TiO2nanoparticles onto the photocatalyst support, layered double hydroxides (LDHs). The newly formed coating possesses acceptable porosity for a porous building material (porosity within the range of 30-46 %) and satisfied photocatalytic activity, as well as mineralogical compatibility with the substrates (mortars, renders, bricks). Additionally, a positive effect considering the self-cleaning phenomenon was attained.

Ternary NiFeMn layered double hydroxides as highly-efficient oxygen evolution catalysts

2016 ◽  
Vol 52 (5) ◽  
pp. 908-911 ◽  
Author(s):  
Zhiyi Lu ◽  
Li Qian ◽  
Yang Tian ◽  
Yaping Li ◽  
Xiaoming Sun ◽  
...  
Keyword(s):  
Transition Metal ◽  
Oxygen Evolution ◽  
Layered Double Hydroxides ◽  
Oxygen Evolution Reaction ◽  
Highly Efficient ◽  
Metal Ratio ◽  
Double Hydroxides

A ternary NiFeMn-LDH with an optimized transition metal ratio is developed as an advanced catalyst for the oxygen evolution reaction.

Coating layered double hydroxides with carbon dots for highly efficient removal of multiple dyes

2021 ◽  
pp. 127613
Author(s):  
Jiahui Ge ◽  
Lili Lian ◽  
Xiyue Wang ◽  
Xueling Cao ◽  
Wenxiu Gao ◽  
...  
Keyword(s):  
Layered Double Hydroxides ◽  
Carbon Dots ◽  
Efficient Removal ◽  
Highly Efficient ◽  
Double Hydroxides

A highly efficient and durable water splitting system: platinum sub-nanocluster functionalized nickel–iron layered double hydroxide as the cathode and hierarchical nickel–iron selenide as the anode

2019 ◽  
Vol 7 (6) ◽  
pp. 2831-2837 ◽  
Author(s):  
Qing Yan ◽  
Peng Yan ◽  
Tong Wei ◽  
Guiling Wang ◽  
Kui Cheng ◽  
...  
Keyword(s):  
Water Splitting ◽  
Layered Double Hydroxide ◽  
Layered Double Hydroxides ◽  
Nickel Iron ◽  
Iron Selenide ◽  
Highly Efficient ◽  
Double Hydroxide ◽  
Double Hydroxides ◽  
Splitting System

A highly-efficient water splitting device is assembled with the platinum sub-nanoclusters functionalized nickel iron layered double hydroxides and hierarchical nickel iron selenides.

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