Rapid scavenging of methylene blue dye from a liquid phase by adsorption on alumina nanoparticles

RSC Advances ◽  
2015 ◽  
Vol 5 (19) ◽  
pp. 14425-14440 ◽  
Author(s):  
Sushmita Banerjee ◽  
Ravindra Kumar Gautam ◽  
Amita Jaiswal ◽  
Mahesh Chandra Chattopadhyaya ◽  
Yogesh Chandra Sharma
Keyword(s):  
Methylene Blue ◽  
Liquid Phase ◽  
Adsorption Behavior ◽  
Alumina Nanoparticles ◽  
Blue Dye ◽  
Methylene Blue Dye

The adsorption behavior of methylene blue on as-synthesized alumina nanoparticles has been investigated.

Epitaxy of Porous and Photocatalytically Active TiO2 Films at 50°C

2011 ◽  
Vol 64 (9) ◽  
pp. 1235 ◽  
Author(s):  
Gregory K. L. Goh ◽  
Kelvin Y. S. Chan ◽  
Gao S. Huang ◽  
Qui L. Tay
Keyword(s):  
Thin Films ◽  
Methylene Blue ◽  
Liquid Phase ◽  
Anatase Tio2 ◽  
Blue Dye ◽  
Tio2 Films ◽  
Methylene Blue Dye ◽  
Liquid Phase Deposition ◽  
Grown Film ◽  
Tio2 Thin Films

Epitaxial anatase TiO2 thin films were grown on (001) oriented SrTiO3 single crystal substrates by liquid phase deposition at 50°C. The film consisted of nanosized crystallites and exhibited a significant void fraction of 31 %. This contributed to the cracking of thicker films due to the generation of capillary stresses in the nanosized pores during drying. This porosity also comes in useful during the photodegradation of a methylene blue dye by an as-grown film.

Adsorption behavior of methylene blue dye onto surface modifiedStrychnos potatorumseeds

2012 ◽  
Vol 32 (3) ◽  
pp. 624-632 ◽  
Author(s):  
C. Senthamarai ◽  
P. Senthil Kumar ◽  
M. Priyadharshini ◽  
P. Vijayalakshmi ◽  
V. Vinoth Kumar ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Adsorption Behavior ◽  
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.

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