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Title: Investigating the impact of chemical structures on the photocatalytic degradation rates over ZnO nanorods: An oxidative pathways perspective
Authors: Daher, Elie A.
Boissière, Cédric
Robert, Christel Laberty
Hamd, Wael 
Affiliations: Department of Chemical Engineering 
Keywords: Degradation rate
Molecular structures
Organic pollutants
Pseudo-first order
ZnO Nanorods
Issue Date: 2023-12-01
Publisher: Elsevier
Part of: Catalysis Communications
Volume: 185
Zinc oxide (ZnO) nanorods were coated on glass substrates and used as photocatalysts to evaluate the kinetic behavior of three different aromatic structures: i) single aromatic ring (phenol), ii) poly-aromatic ring (methylene blue), and iii) complex macromolecule (humic acid). The kinetics of all the tested molecules obey a pseudo-first-order model regardless of their initial concentrations. The apparent rate constants are largely controlled by the bond dissociation energy and the number of oxidation steps in each organic molecule. For instance, methylene blue presents the weakest dissociation bond energy and the highest degradation rate constant compared to humic acid and phenol.
ISSN: 15667367
DOI: 10.1016/j.catcom.2023.106807
Ezproxy URL: Link to full text
Type: Journal Article
Appears in Collections:Department of Chemical Engineering

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