scholarly journals Investigation of photo-catalytic activity of Zn1−xCo x S nanocrystals using methylene blue dye as test contaminant

2013 ◽  
Vol 4 (6) ◽  
pp. 683-686 ◽  
Author(s):  
Mansi Chitkara ◽  
Karamjit Singh ◽  
I. S. Sandhu ◽  
H. S. Bhatti
Keyword(s):  
Methylene Blue ◽  
Catalytic Activity ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Photo Catalytic Activity

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.

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 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

Using of modified-bentonite as low-cost sorbent for removal of methylene blue dye from aqueous solution

2020 ◽  
Vol 27 (2) ◽  
pp. 45-54
Author(s):  
Saraa Muwafaq Ibrahim ◽  
Ziad T. Abd Ali
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Silanol Group ◽  
Infrared Spectrometry ◽  
Blue Dye ◽  
Ammonium Bromide ◽  
Vibration Band ◽  
Order Kinetic ◽  
Methylene Blue Dye ◽  
Modified Bentonite

Batch experiments have been studied to remove methylene blue dye (MB) from aqueous solution using modified bentonite. The modified bentonite was synthesized by replacing exchangeable calcium cations in natural bentonite with cationic surfactant cetyl trimethyl ammonium bromide (CTAB). The characteristics of modified bentonite were studied using different analysis such as Scanning electronic microscopy (SEM), Fourier transform infrared spectrometry (FTIR) and surface area. Where SEM shows the natural bentonite has a porous structure, a rough and uneven appearance with scattered and different block structure sizes, while the modified bentonite surface morphology was smooth and supplemented by a limited number of holes. On other hand, (FTIR) analysis that proved NH group aliphatic and aromatic group of MB and silanol group are responsible for the sorption of contaminate. The organic matter peaks at 2848 and 2930 cm-1 in the spectra of modified bentonite which are sharper than those of the natural bentonite were assigned to the CH2 scissor vibration band and the symmetrical CH3 stretching absorption band, respectively, also the 2930 cm-1 peak is assigned to CH stretching band. The batch study was provided the maximum removal efficiency (99.99 % MB) with a sorption capacity of 129.87 mg/g at specified conditions (100 mg/L, 25℃, pH 11 and 250rpm). The sorption isotherm data fitted well with the Freundlich isotherm model. The kinetic studies were revealed that the sorption follows a pseudo-second-order kinetic model which indicates chemisorption between sorbent and sorbate molecules.

Adsorption Studies of Methylene Blue Dye using Biosorbents

2018 ◽  
Vol 8 (3) ◽  
pp. 502-513
Author(s):  
Saravanan Narayanan ◽  
Rathika Govindasamy
Keyword(s):  
Methylene Blue ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Adsorption Studies
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