Copper oxide nanoplatelets and nanoflowers: facile synthesis and catalytic activity in oxidative degradation of methylene blue

2014 ◽  
Vol 9 (7) ◽  
pp. 432-436 ◽  
Author(s):  
Jinyun Liao ◽  
Hao Li ◽  
Xibin Zhang ◽  
Dinshu Xiao
Keyword(s):  
Methylene Blue ◽  
Catalytic Activity ◽  
Copper Oxide ◽  
Oxidative Degradation ◽  
Facile Synthesis

Catalytic activity of MnOx/WO3 nanoparticles: synthesis, structure characterization and oxidative degradation of methylene blue

2014 ◽  
Vol 38 (3) ◽  
pp. 1250-1255 ◽  
Author(s):  
Mojtaba Amini ◽  
Behzad Pourbadiei ◽  
T. Purnima A. Ruberu ◽  
L. Keith Woo
Keyword(s):  
Methylene Blue ◽  
Catalytic Activity ◽  
Oxidative Degradation ◽  
Structure Characterization ◽  
Effective Catalyst ◽  
Nanoparticles Synthesis

MnOx/WO3 nanoparticles were found to be an effective catalyst for the degradation of methylene blue, an important industrial dye and a problematic pollutant.

Synthesis and Characterization of Copper Oxide Composite and Study of Composite Mediated Photo-Oxidative Degradation of Methylene Blue under Visible Light

2016 ◽  
Vol 63 ◽  
pp. 29-35
Author(s):  
Md Ataur Rahman ◽  
Tajmeri S.A. Islam
Keyword(s):  
Methylene Blue ◽  
Visible Light ◽  
Copper Oxide ◽  
Oxidative Degradation ◽  
Band Gap Energy ◽  
Reflectance Measurement ◽  
Oxide Composite ◽  
Cyclic Mechanism ◽  
Ph Range

Copper oxide composite was prepared from copper (II) acetate. Characterization of composite was performed by Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), FT-IR Spectroscopy and X-ray diffractometry. According to the findings of SEM the particle size was within the range from 450 nm to 550 nm. Band gap energy was determined by reflectance measurement and value was found to be 4.21 eV. From the result of EDS, it appears that the composite contains only Cu and O atoms. Result of XRD confirms that the composite contains CuO, Cu2O and metallic Cu. FTIR spectrum of composite supports the presence of Cu2O. Adsorptive and catalytic properties of composite were studied using Methylene blue as adsorbent. Photo-oxidative degradation of MB was investigated in the suspension of composite in separate experiments at different pH ranging from 2.5 to 5.5 under visible light. Low pH range from 2.5 to 3.5 is most effective for degradation. This was explained by proposing a cyclic mechanism which suggests the conversion of Cu22+ to Cu2+ and vice versa. 95.5% of MB was found to degrade when 5×10-5 M solution of MB was irradiated for three hours in 100 mL suspension of composite having concentration 1gL-1 at pH 2.5.

Porous CuO nanostructure as a reusable catalyst for oxidative degradation of organic water pollutants

2016 ◽  
Vol 40 (1) ◽  
pp. 348-357 ◽  
Author(s):  
Pangkita Deka ◽  
Ramesh C. Deka ◽  
Pankaj Bharali
Keyword(s):  
Methylene Blue ◽  
Catalytic Activity ◽  
Methyl Orange ◽  
Oxidative Degradation ◽  
Reusable Catalyst ◽  
High Catalytic Activity ◽  
Water Pollutants ◽  
Cuo Nanostructure

Porous CuO nanostructure exhibits high catalytic activity for the degradation of methylene blue and methyl orange in the presence of H2O2.

Sign in / Sign up

Export Citation Format

Share Document