Sphere-like and flake-like ZnO immobilized on pineapple leaf fibers as easy-to-recover photocatalyst for the degradation of congo red

Simple item page
dc.contributor.authorDeebansok, Siraprapha
dc.contributor.authorAmornsakchai, Taweechai
dc.contributor.authorSae-Ear, Pannagorn
dc.contributor.authorSiriphannon, Punnama
dc.contributor.authorSmith, Siwaporn Meejoo
dc.date.accessioned2026-08-06T10:32:27Z
dc.date.available2026-08-06T10:32:27Z
dc.date.issued2021-04-01
dc.description.abstractThis work reports immobilization of ZnO photocatalyst on very fine pineapple leaf fiber (PALFs) by a by polyelectrolyte coating method, for the removal of colored pollutants from water stream, allowing for simple recovery after use. It also emphasizes on the effect of defect structure containing in ZnO of hierarchical sphere-like and flake-like morphologies on the color removal performance. The photocatalytic activity of ZnO/PALFs for degradation of congo red (CR) dye was examined under static (dark) and UV/visible irradiation conditions, and effective color removal (>95 %) was achieved, as the results of adsorption and photo-oxidation processes. Results from photoluminescence and X-ray photoelectron spectroscopy suggested that the sphere-like ZnO, bearing zinc vacancies (VZn), zinc interstitials (Zni), singly ionized oxygen vacancies (Vo+), and oxygen vacancies (Vo), has superior photocatalytic activity up to 3.6 times compared to that of flake-like ZnO. With the recyclability up to 3 cycles (>84 % color removal efficiencies), the ZnO immobilized on PALFs have shown a great promise as an easy-to-recover photocatalyst for the removal of colored pollutants in wastewater treatment processes.
dc.identifier.citationJournal of Environmental Chemical Engineering, 9(2), 2021
dc.identifier.doi10.1016/j.jece.2020.104746
dc.identifier.issn22133437
dc.identifier.other2-s2.0-85098450562
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/11983
dc.sourceJournal of Environmental Chemical Engineering
dc.subjectDefect
dc.subjectMicrostructure
dc.subjectMorphology
dc.subjectPhotocatalysis
dc.subjectPlant fibers
dc.subjectZnO
dc.titleSphere-like and flake-like ZnO immobilized on pineapple leaf fibers as easy-to-recover photocatalyst for the degradation of congo red
dc.typeArticle

Files

Collections

Research