Investigation of Photocatalytic Efficiency of Supported CuO Nanoparticles on Natural Zeolite Particles in Photodegradation of Methyl Orange

2020 ◽  
Vol 20 (9) ◽  
pp. 5964-5969 ◽  
Author(s):  
Hassan Koohestani ◽  
Hamed Mansouri ◽  
Abbas Pirmoradian ◽  
Mohammad Hassanabadi
Keyword(s):  
Methyl Orange ◽  
Specific Surface ◽  
Band Gap ◽  
Absorption Edge ◽  
Natural Zeolite ◽  
Dye Removal ◽  
Cuo Nanoparticles ◽  
Photocatalytic Efficiency ◽  
Zeolite Catalysis ◽  
Methyl Orange Dye

In the current work, CuO nanoparticles were deposited on natural zeolite’s particles to resolve the drawbacks of zeolite catalysis. The synthesized composites were characterized by XRD, SEM, BET, and DRS analyses. The results illustrated that in the 15% CuO composite, CuO nanoparticles with a size of 21 nm are deposited on the surface of the zeolite particles. Deposition of CuO nanoparticles on zeolite’s particles decreased the specific surface area from 35 m2/g (pure zeolite) to 28 m2/g (20% CuO composite), and causes a red shift in the absorption edge of the sample to 796 nm for 20% CuO composite. In order to compare the samples’ performances in eliminating water pollutants, methyl orange dye removal was investigated. The analyses indicated that the optimum efficiency (85% in 120 min) belongs to zeolite-15% CuO composite with a band gap of 1.70 eV.

scholarly journals Synthesis and Characterization of Uniform Spherical Nanoporous TiO2Aerogel Templated by Cellulose Alcohol-Gel with Enhanced Photocatalytic Activity

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Zhiming Liu ◽  
Peng Wu ◽  
Shaoli Yang ◽  
Haiying Wang ◽  
Chunde Jin
Keyword(s):  
Electron Microscopy ◽  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Thermal Method ◽  
X Ray ◽  
Double Beam ◽  
Methyl Orange Dye

The spherical nanoporous TiO2aerogels were prepared by a simple ethanol-thermal method, using spherical cellulose alcohol-gel as the template. The morphology, crystalline structure, pore size, specific surface area, and the photocatalytic activity of obtained TiO2aerogel were separately characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), N2adsorption-desorption isotherms, and double beam UV-VIS spectrophotometer. The characteristics of TiO2aerogels presented uniform sphere shape, good internal structural morphology, high specific surface area (ranging from 111.88 to 149.95 m2/g), and good crystalline anatase phase. Moreover, methyl orange dye was used as the target pollutant to characterize the photocatalytic activities and the adsorption performance. The photocatalytic experiment shows that the obtained spherical TiO2aerogels had a higher degradation ratio of 92.9% on methyl orange dye compared with aspherical TiO2aerogels prepared from other concentrations of tetrabutyl orthotitanate (TBOT).

Catalytic activity of Cu/MnO2 Nanoparticles on Methyl Orange dye removal

2018 ◽  
Vol 11 (2) ◽  
pp. 247
Author(s):  
V. Shanmugam ◽  
S. Mohan ◽  
M. Vishnudevan ◽  
T. Seethalakshmi ◽  
R. Sarmila
Keyword(s):  
Catalytic Activity ◽  
Methyl Orange ◽  
Dye Removal ◽  
Mno2 Nanoparticles ◽  
Methyl Orange Dye

Catalytic activity of palladium nanocubes/multiwalled carbon nanotubes structures for methyl orange dye removal

2017 ◽  
Vol 282 ◽  
pp. 168-173 ◽  
Author(s):  
O. Arciniega Cano ◽  
C.A. Rodríguez González ◽  
J.F. Hernández Paz ◽  
P. Amezaga Madrid ◽  
P.E. García Casillas ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Catalytic Activity ◽  
Methyl Orange ◽  
Multiwalled Carbon Nanotubes ◽  
Dye Removal ◽  
Multiwalled Carbon ◽  
Methyl Orange Dye

scholarly journals Study on Fabrication and investigation of the effects of copper salt precursor with different anions SO42-, Cl-, CH3COO- and NO3- on the structure and photocatalytic properties for decomposition of methyl orange dye of octahedral Cu2O nanoparticles

2020 ◽  
Vol 9 (3) ◽  
pp. 112-117
Author(s):  
Mai Nguyen Thi Tuyet ◽  
Hue Dang Thi Minh ◽  
Lam Nguyen Thi ◽  
Huyen Tran Thi Thu ◽  
Nga Nguyen Kim ◽  
...  
Keyword(s):  
Methyl Orange ◽  
Visible Light ◽  
Rate Constant ◽  
Decomposition Reaction ◽  
Raman Shift ◽  
Photocatalytic Efficiency ◽  
Copper Salts ◽  
Optical Gap Energy ◽  
Cu2o Nanoparticles ◽  
Methyl Orange Dye

The octahedra single-phase Cu2O nanoparticles were fabricated from copper salts precursors with different anions including SO42-, Cl-, CH3COO- and NO3-. The prepared materials were characterized by: XRD, Raman shift, SEM, solid UV-vis absorption spectra. The photocatalytic activity and decomposition reaction kinetics for methyl orange dye of the prepared Cu2O samples under visible light irradiation were also studied in this experiment. The results showed that the fabricated Cu2O materials all had a nanometer-sized crystal particles arranged in about of 300-1000 nm with the octahedral particle shape. The narrow optical gap energy of Cu2O samples achieved Eg» 1.83-2.01 eV. The fabricated Cu2O samples all had the high photocatalytic efficiency in decomposition of methyl orange dye (MO) under visible light when added with H2O2 assisted catalyst. The photocatalytic efficiency of the Cu2O-(SO42-)/H2O2 sample was the highest, reaching 99.2% with the rate constant k= 0.10132 min-1. The photocatalytic efficiency of the Cu2O-(CH3COO-)/H2O2 sample was the smallest, reaching 97.6% with the rate constant k= 0.09098 min-1

Immobilized Fe-Loaded Chitosan Film for Methyl Orange Dye Removal: Competitive Ions, Reusability, and Mechanism

2020 ◽  
Author(s):  
Nur Shazwani Abdul Mubarak ◽  
T. W. Chuan ◽  
H. P. Khor ◽  
Ali H. Jawad ◽  
L. D. Wilson ◽  
...  
Keyword(s):  
Methyl Orange ◽  
Dye Removal ◽  
Chitosan Film ◽  
Methyl Orange Dye ◽  
Competitive Ions
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