Construction of carbon nanodots/tungsten trioxide and their visible-light sensitive photocatalytic activity

[Display omitted] •Facile preparation of carbon nanodots/WO3 nanocomposite with high photocatalytic activity were designed.•A novel photocatalytic assay of degrading methylene blue by carbon nanodots/WO3 was performed.•Carbon nanodots/WO3 showed excellent stability which could be recycled for the ph...

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Bibliographic Details
Published in:Journal of colloid and interface science 2016-03, Vol.466, p.268-274
Main Authors: Yan, Fanyong, Kong, Depeng, Fu, Yang, Ye, Qianghua, Wang, Yinyin, Chen, Li
Format: Article
Language:English
Subjects:
Carbon
Carbon nanodots/tungsten trioxide
Degradation
Illumination
Methylene blue
Nanostructure
Photocatalysis
Photocatalyst
Photocatalytic activity
Rhodamine
Stability
Tungsten
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Summary:[Display omitted] •Facile preparation of carbon nanodots/WO3 nanocomposite with high photocatalytic activity were designed.•A novel photocatalytic assay of degrading methylene blue by carbon nanodots/WO3 was performed.•Carbon nanodots/WO3 showed excellent stability which could be recycled for the photocatalytic degradation of methylene blue. Herein we designed a simple and effective method for synthesizing carbon nanodots/tungsten trioxide nanocomposite with high photocatalytic activity. The as-prepared carbon nanodots/ tungsten trioxide has strong photoabsorption under visible light irradiation. Then, carbon nanodots/tungsten trioxide was successfully applied to the degradation of methylene blue. The photodegradation efficiency of methylene blue can be reached as high as 100% after 0.5h visible light illumination. In addition, carbon nanodots/tungsten trioxide could also be used to degrade rhodamine B and methyl orange. Most importantly, the photocatalytic activity of carbon nanodots/tungsten trioxide did not exhibit obvious changes after five cycles. The results indicate that carbon nanodots/tungsten trioxide has potential applications in the degradation of organic pollutants in industrial waste water.
ISSN:0021-9797
1095-7103
DOI:10.1016/j.jcis.2015.12.043