Back to Search
Start Over
Highly effective CuO catalysts synthesized by various routes for discoloration of methylene blue
- Source :
- Chemical Papers; April 2020, Vol. 74 Issue: 4 p1113-1121, 9p
- Publication Year :
- 2020
-
Abstract
- A series of CuO catalysts were fabricated through hydrothermal process, thermal decomposition of the precursors of CuC2O4synthesized by soft reactive grinding route and oxalate-gel co-precipitation method, respectively. The discoloration of methylene blue in the presence of H2O2was selected as the activity test model reaction. The as-prepared catalysts were characterized by powder X-ray diffraction, scanning electron microscopy, infrared diffuse reflectance spectrum, and N2-adsorption analysis. The CuO obtained from calcination of dry-grinding-derived oxalate precursor has better catalytic performance than those prepared by conventional wet-chemical method. Examination of the structural characterization shows that the small particle size and relatively high surface area are the main reasons for its excellent activity. Moreover, the pseudo-first-order kinetics model was also employed to understand the discoloration behavior of grinding-derived CuO and the activation energy was calculated to be 56.5 kJ mol−1. The current preparation mechanism of solid-state synthetic technique was also proposed by tracking the precursor structure.
Details
- Language :
- English
- ISSN :
- 25857290 and 13369075
- Volume :
- 74
- Issue :
- 4
- Database :
- Supplemental Index
- Journal :
- Chemical Papers
- Publication Type :
- Periodical
- Accession number :
- ejs51191870
- Full Text :
- https://doi.org/10.1007/s11696-019-00950-3