Journal
ADVANCED POWDER MATERIALS
Volume 1, Issue 2, Pages -Publisher
KEAI PUBLISHING LTD
DOI: 10.1016/j.apmate.2021.09.004
Keywords
Electrospinning; La -doped ZnO nanofibers; Rhodamine B; Photocatalytic decomposition; Photodegradation kinetics
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Funding
- National Natural Science Foundation of China [51406141, 51803093, 51903123]
- Natural Science Foundation of Fujian Province, China [2020J01419, 2020J05220, 2020J01393]
- Natural Science Foundation of Jiangsu Province, China [BK20180770, BK20190760]
- Open Fund of Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, China [WYKF-EIGT2020-3]
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A series of La-doped ZnO nanofibers were prepared by electrospinning-calcination technology and their photocatalytic performance for Rhodamine B degradation was evaluated under visible light irradiation. The ZnO nanofibers doped with 1.5 at.% La exhibited high catalytic efficiency.
A series of La-doped ZnO (La/ZnO) nanofibers were prepared by electrospinning-calcination technology and characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), ultraviolet-visible (UV-Vis) absorption spectroscopy and specific surface area analysis. The effect of numerous operational parameters involving calcination temperature, La doping amount, La-doped ZnO concentration and initial Rhodamine B (Rh B) concentration on photocatalytic efficiency of the composite has been analyzed by using Rh B for degradation under the illumination of visible light. Under optimum conditions, ZnO doped with 1.5 at.% La achieved 94.31% Rh B degradation after 510 min of visible light illumination. The kinetic data of La/ZnO catalyst for Rh B photodegradation fitted the Langmuir-Hinshelwood first-order (LHFO) kinetic model well.
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