Back to Search
Start Over
Enhanced photocatalytic performance of CuAl2O4 nanoparticles spinel for dye degradation under visible light.
- Source :
- Research on Chemical Intermediates; Sep2021, Vol. 47 Issue 9, p3785-3806, 22p
- Publication Year :
- 2021
-
Abstract
- Environmental problems on a global scale have become more prominent with the population growth. For the removal of organic contaminants, the solar energy and environmentally friendly photocatalysis are needed to substitute the fossil fuels. In this contribution, we report the synthesis, characterization and photocatalytic capability of CuAl<subscript>2</subscript>O<subscript>4</subscript> nanoparticles. The spinel was elaborated by nitrate route and characterized physically and electrochemically for their correlations and application in photocatalysis through the degradation of Basic Red 46 (BR 46), a hazardous dye under visible illumination. The effects of several operational factors like the pH, catalyst dose and initial dye BR 46 concentration were optimized. The results revealed that the photocatalytic performance reached 93% at pH 10, 1 g/L of catalyst dose at a concentration of 10 mg/L of BR 46 within 120 min of irradiation. The quasi-total mineralization was confirmed by the total organic carbon (TOC) and dissolved organic carbon (DOC). Additionally, the prepared photocatalyst possesses a good cyclability with no significant change after five successive photocatalytic cycles. Furthermore, the radical scavenger tests revealed that the specie O<subscript>2</subscript><superscript>·−</superscript> and the holes h<superscript>+</superscript> have the significant effects on the removal of BR 46. Based on the latest results, a photocatalytic mechanism was proposed. [ABSTRACT FROM AUTHOR]
- Subjects :
- VISIBLE spectra
SPINEL
SPINEL group
FOSSIL fuels
POLLUTANTS
SOLAR energy
DYES & dyeing
Subjects
Details
- Language :
- English
- ISSN :
- 09226168
- Volume :
- 47
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Research on Chemical Intermediates
- Publication Type :
- Academic Journal
- Accession number :
- 151961570
- Full Text :
- https://doi.org/10.1007/s11164-021-04496-6