光降解
材料科学
纤维素
纳米纤维
降级(电信)
催化作用
光催化
傅里叶变换红外光谱
复合材料
扫描电子显微镜
纳米材料
化学工程
亚甲蓝
化学
纳米技术
有机化学
工程类
电信
计算机科学
作者
Mostafa Dehghani,Humayun Nadeem,Vikram Singh Raghuwanshi,Hamid Reza Mahdavi,Mark M. Banaszak Holl,Warren Batchelor
出处
期刊:ACS applied nano materials
[American Chemical Society]
日期:2020-09-29
卷期号:3 (10): 10284-10295
被引量:54
标识
DOI:10.1021/acsanm.0c02199
摘要
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 μW/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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