Journal
APPLIED SURFACE SCIENCE
Volume 501, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2019.144047
Keywords
Photocatalysts; Hetero-structure; Bi2S3 quantum dots; Organic pollutants
Categories
Funding
- National Natural Science Foundation of China [21878164, 61504073]
- Project of Shandong Province Higher Educational Science and Technology Program [J18KA011]
Ask authors/readers for more resources
Bismuth-based semiconductor materials have been considered as potential and green technology to alleviate various organic pollutants in recent years. In this work, we modified the Bi4NbO8Cl semiconductor via developing hetero-structure to overcome the shortcoming of fast recombination of electrons and holes. Bi2S3 quantum dots with Bi4NbO8Cl were successfully in-situ synthesized by the hydrothermal method, which were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and UV-vis diffuse reflectance spectroscopy. The Bi2S3/Bi4NbO8Cl hetero-structure with broad light absorption region and low recombination efficiency was employed to photodegrade the organic pollutants (rhodamine B, Rh-B) under visible-light irradiation. It exhibited an enhanced photocatalytic degradation of Rh-B compared to Bi4NbO8Cl and Bi2S3, due to the in-situ synthesized Bi2S3 quantum dots that could effectively separate the photo-induced electron-hole pairs and suppress their recombination. Besides, the DFT data further explained the interfacial properties of Bi2S3/Bi4NbO8Cl. Thus, this work provides a unique idea in the design of novel photocatalysts, thereby promoting their potential application in industry.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available