Two types of chitosan-based composites (chitosan/ZnO and chitosan/Ce-ZnO composites) were synthesized under microwave irradiation and characterized as advanced catalysts of enhanced photocatalytic activity under the visible light. The morphological investigation reflected the formation of ZnO and Ce doped ZnO at stunning micro flowers of nano limps. Additionally, the optical studies reflected a reduction in the bandgap of ZnO from 3.3 eV to 2.85 eV and 2.5 eV after supporting it onto chitosan chains and after doping it with cerium, respectively. The synthetic composites were applied in photocatalytic removal of malachite green dye under a visible light source. The synthetic CH/ZnO and CH/Ce-ZnO showed enhancement in the photocatalytic removal of M.G by 54% and 87%, respectively, as compared to the pure ZnO. The synthetic composites are of high stability and can be reused for five photocatalytic degradation cycles at stunning removal percentages. The main oxidizing radicals during the removal of M.G by CH/ZnO are the generated electron-hole pairs as well as the hydroxyl radicals. The effective species in CH/Ce-ZnO photocatalytic system are the photogenerated hydroxyl radicals followed by the electron-hole pairs.
机构:
CNRS, PROMES, Proc Mat & Solar Energy Lab, UPR8521, F-66120 Font Romeu, FranceCNRS, PROMES, Proc Mat & Solar Energy Lab, UPR8521, F-66120 Font Romeu, France
Beche, Eric
;
Charvin, Patrice
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CNRS, PROMES, Proc Mat & Solar Energy Lab, UPR8521, F-66120 Font Romeu, FranceCNRS, PROMES, Proc Mat & Solar Energy Lab, UPR8521, F-66120 Font Romeu, France
Charvin, Patrice
;
Perarnau, Danielle
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CNRS, PROMES, Proc Mat & Solar Energy Lab, UPR8521, F-66120 Font Romeu, FranceCNRS, PROMES, Proc Mat & Solar Energy Lab, UPR8521, F-66120 Font Romeu, France
Perarnau, Danielle
;
Abanades, Stephane
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CNRS, PROMES, Proc Mat & Solar Energy Lab, UPR8521, F-66120 Font Romeu, FranceCNRS, PROMES, Proc Mat & Solar Energy Lab, UPR8521, F-66120 Font Romeu, France
Abanades, Stephane
;
Flamant, Gilles
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CNRS, PROMES, Proc Mat & Solar Energy Lab, UPR8521, F-66120 Font Romeu, FranceCNRS, PROMES, Proc Mat & Solar Energy Lab, UPR8521, F-66120 Font Romeu, France
机构:
CNRS, PROMES, Proc Mat & Solar Energy Lab, UPR8521, F-66120 Font Romeu, FranceCNRS, PROMES, Proc Mat & Solar Energy Lab, UPR8521, F-66120 Font Romeu, France
Beche, Eric
;
Charvin, Patrice
论文数: 0引用数: 0
h-index: 0
机构:
CNRS, PROMES, Proc Mat & Solar Energy Lab, UPR8521, F-66120 Font Romeu, FranceCNRS, PROMES, Proc Mat & Solar Energy Lab, UPR8521, F-66120 Font Romeu, France
Charvin, Patrice
;
Perarnau, Danielle
论文数: 0引用数: 0
h-index: 0
机构:
CNRS, PROMES, Proc Mat & Solar Energy Lab, UPR8521, F-66120 Font Romeu, FranceCNRS, PROMES, Proc Mat & Solar Energy Lab, UPR8521, F-66120 Font Romeu, France
Perarnau, Danielle
;
Abanades, Stephane
论文数: 0引用数: 0
h-index: 0
机构:
CNRS, PROMES, Proc Mat & Solar Energy Lab, UPR8521, F-66120 Font Romeu, FranceCNRS, PROMES, Proc Mat & Solar Energy Lab, UPR8521, F-66120 Font Romeu, France
Abanades, Stephane
;
Flamant, Gilles
论文数: 0引用数: 0
h-index: 0
机构:
CNRS, PROMES, Proc Mat & Solar Energy Lab, UPR8521, F-66120 Font Romeu, FranceCNRS, PROMES, Proc Mat & Solar Energy Lab, UPR8521, F-66120 Font Romeu, France