Formation of copper hydroxy double salts derived from metal oxides and their catalytic activity in degradation of methyl orange

2019 ◽  
Vol 45 (1) ◽  
pp. 993-1000 ◽  
Author(s):  
Vararut Weeramonkhonlert ◽  
Assadawoot Srikhaow ◽  
Siwaporn Meejoo Smith
Keyword(s):  
Catalytic Activity ◽  
Methyl Orange ◽  
Metal Oxides ◽  
Double Salts ◽  
Hydroxy Double Salts ◽  
Degradation Of Methyl Orange

scholarly journals Remarkable Catalytic Activity of CMC/BiFeO3 Nanocomposite Film for the Degradation of Methyl Orange Under Direct Sunlight Radiation

2019 ◽  
Vol 30 (Supp.2) ◽  
pp. 23-40
Author(s):  
Nor Atilia Athira Zaahari ◽  
◽  
Teo Leong Huat ◽  
Noor Haida Mohd Kaus ◽  
Mohamad Haafiz Mohamad Kassim ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Methyl Orange ◽  
Nanocomposite Film ◽  
Direct Sunlight ◽  
Degradation Of Methyl Orange ◽  
Sunlight Radiation

Preparation and Photocatalytic Property of Lanthanum-Doped TiO2 Nanoparticles

2012 ◽  
Vol 549 ◽  
pp. 584-588
Author(s):  
Qing Li ◽  
Rui Zhi Wen
Keyword(s):  
Particle Size ◽  
Catalytic Activity ◽  
Methyl Orange ◽  
Particle Size Distribution ◽  
Sol Gel ◽  
Photocatalytic Property ◽  
Photocatalytic Efficiency ◽  
Mass Percentage ◽  
Supercritical Fluid Drying ◽  
Degradation Of Methyl Orange

Nano-TiO2 photocatalyst powders were prepared through the sol-gel method and supercritical fluid drying(SCFD). The TG-DTA、XRD、particle size distribution technique、SEM were used to characterize the hyperfine TiO2 particles.The lanthanum-doped TiO2 with different mass percentage of La3+ were compared with pure TiO2 when used as photocatalyst in degradation of methyl orange. The best catalytic activity was observed with 0.02(mol)%La-TiO2. Photocatalytic efficiency of the 0.02(mol)%La- TiO2 is improved by 30.79% comparing to pure TiO2.

scholarly journals Synthesis and Characterization of Erbium Trioxide Nanoparticles as Photo-Catalytic for Degradation of Methyl Orange Dye

2019 ◽  
Author(s):  
Rifat Mohammed Dakhil ◽  
Tayser Sumer Gaaz ◽  
Ahmed Al-Amiery ◽  
Mohd S. Takriff ◽  
Abdul Amir H. Kadhum
Keyword(s):  
Catalytic Activity ◽  
Methyl Orange ◽  
Synthesis And Characterization ◽  
Photo Degradation ◽  
Photo Catalytic Activity ◽  
Xrd Diffraction ◽  
Vis Spectroscopy ◽  
Methyl Orange Dye ◽  
Degradation Of Methyl Orange

Abstract. The present work focuses on the photo-catalytic degradation of methyl orange (MO) on Erbium trioxide nanoparticles Er2O3 NPs. In this study, Er2O3 nanoparticles were synthesized and fully characterized via various techniques including; XRD diffraction, UV-Vis spectroscopy and SEM techniques. The results revealed that, the photo-catalytic activity of the prepared Er2O3 NPs towards methyl orange (MB) photo-degradation was manifested. The optimum efficiency obtained was 16 %.

Photo-Catalytic Activity of Ag-N Co-Doped ZnO/CuO Nanocomposite for Degradation of Methyl Orange

2016 ◽  
Vol 32 (1-2) ◽  
pp. 49
Author(s):  
Jemal Mohammed Yasin ◽  
O. P. Yadav ◽  
Abi M. Taddesse
Keyword(s):  
Catalytic Activity ◽  
Methyl Orange ◽  
Band Gap Energy ◽  
Spectroscopic Techniques ◽  
Solution Ph ◽  
Photo Catalytic Activity ◽  
Composite Photocatalysts ◽  
Doped Zno ◽  
Co Doped ◽  
Degradation Of Methyl Orange

Nano-size Ag-N co-doped ZnO-CuO composites have been synthesized and tested for their photo-catalytic activity towards degradation of methyl orange in aqueous solution under visible as well as UV radiations. Crystal structure, surface functional groups, metallic composition and band structure of as-synthesized nano-material were investigated using XRD, FTIR, AAS and UV-Vis spectroscopic techniques, respectively. Ag-N co-doped ZnO-CuO photocatalyst showed higher photo-catalytic activity than Ag- or N-doped and undoped composite photocatalysts. The observed highest activity of Ag-N co-doped ZnO-CuO among the studied photo-catalysts, is attributed to the cumulative effects of lowering of band-gap energy and decrease of recombination rate of photo-generated electrons and holes owing to doped N and Ag, respectively. Effects of photo-catalyst load, solution pH and substrate initial concentration on the degradation of methyl orange have also been studied.

scholarly journals Sonocatalytic degradation of methyl orange in the presence of TiO2 catalysts and catalytic activity comparison of rutile and anatase

2005 ◽  
Vol 12 (5) ◽  
pp. 331-337 ◽  
Author(s):  
Jun Wang ◽  
Baodong Guo ◽  
Xiangdong Zhang ◽  
Zhaohong Zhang ◽  
Jiantao Han ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Methyl Orange ◽  
Activity Comparison ◽  
Degradation Of Methyl Orange

Catalytic Activity and Kinetic Studies of Core@Shell Nanostructure NiFe2O4@TiO2 for Photocatalytic Degradation of Methyl Orange Dye

2020 ◽  
Vol 42 (4) ◽  
pp. 531-531
Author(s):  
Mutawara Mahmood Baig Mutawara Mahmood Baig ◽  
Erum Pervaiz Erum Pervaiz ◽  
Muhammad Junaid Afzal Muhammad Junaid Afzal
Keyword(s):  
Catalytic Activity ◽  
Methyl Orange ◽  
Surface Area ◽  
Nickel Ferrite ◽  
Pure Nickel ◽  
Core Shell ◽  
Anatase Titania ◽  
Auto Combustion ◽  
Nife2o4 Nanoparticles ◽  
Degradation Of Methyl Orange

Current research focuses on synthesis and characterization of magnetically separable core@shell (NiFe2O4@TiO2) nanostructured photocatalyst with different weight percent (10, 20, 30, and 40) TiO2 using simple wet chemical techniques. Magnetic core with TiO2 shell was synthesized by the hydrolysis of TTIP precursor with NiFe2O4 nanoparticles. NiFe2O4 nanoparticles were synthesized by the sol-gel auto combustion method. The synthesized nanostructures were characterized for structural, morphological and magnetic behavior using XRD, TEM, SEM and VSM while the surface area was calculated using Brunauer-Emmett-Teller analyzer. Pure nickel ferrite was indexed as spinel FCC crystal structure while anatase titania was confirmed from the characteristic peaks in the indexed XRD patterns. SEM images show the uniform particle size and spherical morphology with average size of 18.85 nmand#177;2nm. The Surface area of prepared core@shell nanostructures was found as 258 m2/g for 10 wt. % TiO2 photocatalyst. A decrease in surface area has been observed with the increase in TiO2 percentage. The photo-catalytic degradation of MO was studied using UV-Visible spectroscopy under NiFe2O4-TiO2 catalyst. UV-spectra revealed degradation of methyl orange by the decrease in the characteristic peak at 460 nm. Kinetics of degradation reaction were studied by the integral method of analysis using UV absorbance data at 460 nm. The photo-catalytic activity of as synthesized catalyst was enhanced many folds as compared to the pure nickel ferrite. M-H curves obtained from VSM revealed a decrease in the magnetization of nickel ferrite with a coating of non-magnetic TiO2.

A “light-on” colorimetric assay for anion detection using the inhibitory effect of anions on the catalytic activity of metal nanoparticles for the degradation of methyl orange

The Analyst ◽  
2014 ◽  
Vol 139 (23) ◽  
pp. 6122-6125 ◽  
Author(s):  
Lixia Lu ◽  
Fan Yang ◽  
Xiurong Yang
Keyword(s):  
Catalytic Activity ◽  
Methyl Orange ◽  
Metal Nanoparticles ◽  
Colorimetric Assay ◽  
Colorimetric Method ◽  
Inhibitory Effect ◽  
Anion Detection ◽  
Degradation Of Methyl Orange

A “light-on” colorimetric method for anion detection using the catalytic ability of metal nanoparticles for methyl orange (MO) degradation was developed.

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