Journal
SUSTAINABLE CHEMISTRY AND PHARMACY
Volume 27, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.scp.2022.100611
Keywords
Green synthesis; MICP; CdO nanostructures; Photocatalysis
Categories
Funding
- Council of Science and Technology of Mexico [206474]
Ask authors/readers for more resources
This research developed a new green route synthesis of cadmium oxide (CdO) nanostructures by employing microbially induced carbonate precipitation and calcination treatment. The CdO nanostructures exhibited excellent photodegradation performance.
This research developed a new green route synthesis of cadmium oxide (CdO) nanostructures. First, the microbially induced carbonate precipitation was employed as a bioremediation strategy of Cd+2 in wastewater using granular sludge to precipitate it as cadmium carbonate (CdCO3) crystals. Then, the CdCO3 powder was subjected to calcination treatment at 450(degrees)C for 10, 20, 30, and 60 min to convert it to CdO and remove organic compounds. The characterization results showed that CdCO3 was converted entirely to CdO at 60 min of the thermal annealing at 450(degrees)C. CdO exhibited a simple cubic structure with an average crystallite size of 28 nm. Scanning electron microscopy images showed agglomerations composed of CdO tube-like nanostructures with an average of 60 nm in diameter. The optical energy band-gaps of the CdO nanostructures were 2.15 eV and 2.0 eV for direct and indirect transitions, respectively. Finally, the CdO nanostructures exhibited excellent removal efficiencies for Methylene blue and Congo red photodegradation at 120 min with apparent rate constants of 0.013 and 0.009 min(-1), respectively.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available