期刊
ACS APPLIED NANO MATERIALS
卷 3, 期 10, 页码 10284-10295出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.0c02199
关键词
dye degradation; photocatalyst; sunlight irradiation; ZnO/CNF composite; wastewater treatment; sustainable processing
资金
- Australian Research Council
- ARC Research Hub for Processing Lignocellulosics into High Value Products (PALS) through the Industry Transformation Research Hub grant [IH170100020]
- Monash University
- Bioprocessing Research Institute of Australia (BioPRIA)
Porous ZnO/cellulose nanofiber (CNF) composites were synthesized to investigate their photocatalytic degradation of methylene blue (MB) dye (a persistent organic pollutant model) under a UV lamp and sunlight. UV/vis analysis indicated that complete photodegradation was achieved in about 10 min under natural sunlight with low UV intensity (between 1500 and 2900 mu W/cm(-1) of UVA/B). Scanning electron microscopy, Fourier transform infrared, Brunauer-Emmett-Teller, X-ray diffraction, and small-angle X-ray scattering characterization of the composite were consistent with flower/plate morphology ZnO nanomaterials of similar size to the CNF fiber diameter distributed in the matrix. The catalyst with 0.3 M Zn(Ac)(2) and 1.5 wt % CNF loading was the sample with the highest MB photodegradation efficiency of >99% in less than 10 min. This study provides proof-of-concept of a simple, sustainable, ecofriendly, and industrially scalable approach to synthesize extremely efficient ZnO/CNF photocatalysts for the degradation of organic pollutants. Catalyst performance showed greater dye degradation with a function of irradiation time as compared to state-of-the-art catalysts reported in the literature.
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