Effect of hydrothermal conditions on microstructures of pure and doped CeO2 nanoparticles and their photo-catalytic activity: degradation mechanism and pathway of methylene blue dye

2017 ◽  
Vol 43 (12) ◽  
pp. 7171-7192 ◽  
Author(s):  
Ahmed A. Farghali ◽  
Waleed M. A. El Rouby ◽  
Abdalrahman Hamdedein
Keyword(s):  
Methylene Blue ◽  
Catalytic Activity ◽  
Degradation Mechanism ◽  
Ceo2 Nanoparticles ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Hydrothermal Conditions ◽  
Photo Catalytic Activity ◽  
Doped Ceo2

scholarly journals Synthesis of h- andα-MoO3by Refluxing and Calcination Combination: Phase and Morphology Transformation, Photocatalysis, and Photosensitization

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Pannipa Wongkrua ◽  
Titipun Thongtem ◽  
Somchai Thongtem
Keyword(s):  
Methylene Blue ◽  
Catalytic Activity ◽  
Molybdenum Oxide ◽  
Experimental Results ◽  
Blue Dye ◽  
Xenon Lamp ◽  
Methylene Blue Dye

Hexagonal molybdenum oxide (h-MoO3) nano- and microrods were successfully synthesized by refluxing of (NH4)6Mo7O24·4H2O solutions with the pH 1 at 90°C for 1, 3, 5, and 7 h and were further transformed into orthorhombic molybdenum oxide (α-MoO3) microplates by calcination at 450°C for 6 h. These selected products were used to determine the degradation of methylene blue dye under 35 W xenon lamp for 0–180 min, due to the photocatalysis and photosensitization processes. In this research, catalytic activity of the metastable h-MoO3has higher efficiency than that of the thermodynamically stableα-MoO3. Their phase and morphology transformation was also explained according to the experimental results.

Probing the photo- and electro-catalytic degradation mechanism of methylene blue dye over ZIF-derived ZnO

2019 ◽  
Vol 373 ◽  
pp. 377-388 ◽  
Author(s):  
Soumitra Payra ◽  
Swapna Challagulla ◽  
Yamini Bobde ◽  
Chanchal Chakraborty ◽  
Balaram Ghosh ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Degradation Mechanism ◽  
Catalytic Degradation ◽  
Blue Dye ◽  
Methylene Blue Dye

Nanostructured vanadium-doped iron oxide: catalytic oxidation of methylene blue dye

2015 ◽  
Vol 39 (4) ◽  
pp. 3051-3058 ◽  
Author(s):  
Henrique S. Oliveira ◽  
Luiz C. A. Oliveira ◽  
Márcio C. Pereira ◽  
José D. Ardisson ◽  
Patterson P. Souza ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Catalytic Activity ◽  
Iron Oxide ◽  
Catalytic Oxidation ◽  
Blue Dye ◽  
Methylene Blue Dye

V-doped iron oxide exhibits remarkable catalytic activity for the oxidation of methylene blue with H2O2.

A simple way to prepare Au@polypyrrole/Fe3O4 hollow capsules with high stability and their application in catalytic reduction of methylene blue dye

Nanoscale ◽  
2014 ◽  
Vol 6 (13) ◽  
pp. 7666-7674 ◽  
Author(s):  
Tongjie Yao ◽  
Tieyu Cui ◽  
Hao Wang ◽  
Linxu Xu ◽  
Fang Cui ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Catalytic Activity ◽  
High Stability ◽  
Catalytic Reduction ◽  
Blue Dye ◽  
Methylene Blue Dye

Au@PPy/Fe3O4 hollow capsules with excellent catalytic activity, good reusability and high stability were prepared in a simple way.

scholarly journals Photocatalytic oxidation degradation mechanism study of methylene blue dye waste water with GR/iTO2

2018 ◽  
Vol 238 ◽  
pp. 03006 ◽  
Author(s):  
Xi-quan Wang ◽  
Song-fu Han ◽  
Qing-wen Zhang ◽  
Nan Zhang ◽  
Dan-dan Zhao
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Oxidation ◽  
Degradation Mechanism ◽  
Degradation Process ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Mechanism Study ◽  
Spectra Analysis ◽  
Photo Catalyst ◽  
Oxidation Degradation

Graphene/titania multiplex photo-catalyst was prepared through hydrothermal method. Methylene blue with initial concentration of 20 mg/L in aqueous solution was treated by photocatalytic oxidation and the degradation process was investigated by UV/Vis spectrum, FTIR and GC-MS Spectra analysis. The results indicated that the conjugate structure of N-S heterocyclic compound was broken and aromatic ring was oxidized to open the ring. The methylene blue molecules were finally mineralized to H2O and CO2 in the photocatalytic degradation process.

scholarly journals Catalytic activity of the composition SrBi(4-у)O(7-z)/1/2y(BiO)2СО3 in decomposition of methylene blue dye

2019 ◽  
Vol 62 (3) ◽  
pp. 242-250
Author(s):  
O.I. Kaminsky ◽  
K.S. Makarevich ◽  
A.V. Zaitsev ◽  
S.A. Pyachin ◽  
E.A. Kirichenko ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Catalytic Activity ◽  
Blue Dye ◽  
Methylene Blue Dye
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