scholarly journals Physical properties of PVDF-GO/black-TiO2 nanofibers and its photocatalytic degradation of methylene blue and malachite green dyes

2021 ◽  
Author(s):  
Muhammed Abdelmaksoud ◽  
Alaa Mohamed ◽  
Abderrahman Sayed ◽  
Sherif Khairy
Keyword(s):  
Methylene Blue ◽  
Physical Properties ◽  
Photocatalytic Degradation ◽  
Malachite Green ◽  
Tio2 Nanofibers ◽  
Black Tio2

Photocatalytic Degradation of Methylene Blue, Rhodamine-B, and Malachite Green by Ag @ ZnO/TiO2

2021 ◽  
Vol 52 (1) ◽  
Author(s):  
Süleyman Kerli ◽  
Mustafa Kavgacı ◽  
Ali Kemal Soğuksu ◽  
Barış Avar
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Degradation ◽  
Malachite Green ◽  
Rhodamine B

scholarly journals Visible Light Photocatalytic Degradation of Methylene Blue and Malachite Green Dyes with BaWO4-Go Nano Composite

2017 ◽  
Vol 2 (3) ◽  
pp. 1173-1183 ◽  
Author(s):  
M. Sunitha ◽  
R. Soma Sekhar ◽  
B. Ravali ◽  
Ch. Rama Krishna Reddy ◽  
S.V. Mahalakshmi ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Malachite Green ◽  
Nano Composite ◽  
Visible Light Photocatalytic

scholarly journals Visible Light Photocatalytic Degradation of Methylene Blue and Malachite Green Dyes with CuWO4-GO Nano Composite

2018 ◽  
Vol 07 (02) ◽  
pp. 17-34 ◽  
Author(s):  
Sunitha Medidi ◽  
Sowmyasree Markapurapu ◽  
Mastan Rao Kotupalli ◽  
Rama Krishna Reddy Chinnam ◽  
Venkata Mahalakshmi Susarla ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Malachite Green ◽  
Nano Composite ◽  
Visible Light Photocatalytic

scholarly journals Correction to: Photocatalytic Degradation of Methylene Blue, Rhodamine‑B, and Malachite Green by Ag @ ZnO/TiO2

2021 ◽  
Vol 52 (2) ◽  
Author(s):  
Süleyman Kerli ◽  
Mustafa Kavgacı ◽  
Ali Kemal Soğuksu ◽  
Barış Avar
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Degradation ◽  
Malachite Green ◽  
Rhodamine B

scholarly journals Physical Properties of PVDF-GO/Black-TiO2 Nanofibers and its Photocatalytic Degradation of Methylene Blue and Malachite Green Dyes

2020 ◽  
Author(s):  
M K Abdelmaksoud ◽  
Alaa Mohamed ◽  
Abderrahman Sayed ◽  
S A Khairy
Keyword(s):  
Methylene Blue ◽  
Graphene Oxide ◽  
Malachite Green ◽  
Diffuse Reflectance Spectroscopy ◽  
Ph Value ◽  
Degradation Efficiency ◽  
Tio2 Nanofibers ◽  
Particle Distributions ◽  
Optimum Ph ◽  
Visible Light Driven

Abstract BackgroundBlack TiO2 and Graphene Oxide (GO) have attracted intensive attention as an effective catalyst on visible light driven for photodegrading of dyes. In this study, nano-black TiO2 was prepared by a simple hydrogenation of the anatase titanium oxide and the graphene oxide was prepared by applying the modified Hummers method. The prepared powders and nanofiber membranes are carefully examined to ensure their single phase and compound structure formation as well as to measure the equivalent crystallite size and particle distributions. ResultsThe optimum degradation efficiency of malachite green and methylene blue dyes occurred at pH values of 8 and 10, respectively. Afterwards, at the optimum pH value of 8, for malachite green, the degradation efficiency is peaked at 20 mg of the nano-black TiO2 concentration. Then, a comparison of the degradation efficiency of the two mentioned dyes are performed as the fore-mentioned nanofibers are loaded with 20 mg nano-black TiO2 at the corresponding optimum pH vales. ConclusionsThe diffuse reflectance spectroscopy has been investigated to find out the optical energy gaps of the treated and nano-black samples. Finally, a schematic of the redox reaction mechanism has been proposed.

Photocatalytic degradation of methylene blue from aqueous solutions using nanopillars-TiO2 thin films: Batch reactor studies

2018 ◽  
Vol 18 (3) ◽  
pp. 81-91 ◽  
Author(s):  
C. Lalhriatpuia
Keyword(s):  
Thin Films ◽  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Organic Carbon ◽  
Photocatalytic Degradation ◽  
Batch Reactor ◽  
Tio2 Thin Films ◽  
Initial Concentration ◽  
Bet Specific Surface Area ◽  
Interfering Ions

Nanopillars-TiO2 thin films was obtained on a borosilicate glass substrate with (S1) and without (S2) polyethylene glycol as template. The photocatalytic behaviour of S1 and S2 thin films was assessed inthe degradation of methylene blue (MB) dye from aqueous solution under batch reactor operations. The thin films were characterized by the SEM, XRD, FTIR and AFM analytical methods. BET specific surface area and pore sizes were also obtained. The XRD data confirmed that the TiO2 particles are in its anatase mineral phase. The SEM and AFM images indicated the catalyst is composed with nanosized pillars of TiO2, evenly distributed on the surface of the substrate. The BET specific surface area and pore sizes of S1 and S2 catalyst were found to be 5.217 and 1.420 m2/g and 7.77 and 4.16 nm respectively. The photocatalytic degradation of MB was well studied at wide range of physico-chemical parameters. The effect of solution pH (pH 4.0 to 10.0) and MB initial concentration (1.0 to 10.0 mg/L) was extensively studied and the effect of several interfering ions, i.e., cadmium nitrate, copper sulfate, zinc chloride, sodium chloride, sodium nitrate, sodium nitrite, glycine, oxalic acid and EDTA in the photocatalytic degradation of MB was demonstrated. The maximum percent removal of MB was observed at pH 8.0 beyond which it started decreasing and a low initial concentration of the pollutant highly favoured the photocatalytic degradation using thin films and the presence of several interfering ions diminished the photocatalytic activity of thin films to some extent. The overall photocatalytic activity was in the order: S2 > S1 > UV. The photocatalytic degradation of MB was followed the pseudo-first-order rate kinetics. The mineralization of MB was studied with total organic carbon measurement using the TOC (total organic carbon) analysis.

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