Journal
SEPARATION AND PURIFICATION TECHNOLOGY
Volume 256, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.seppur.2020.117815
Keywords
Bi2O3; WO3 composites; P-n junction; Photocatalysis; Visible-light photocatalyst
Categories
Funding
- National Natural Science Foundation of China [U1705256, 51972123]
- Subsidized Project for Postgraduates' Innovative Fund in Scientific Research of Huaqiao University [18013081026]
Ask authors/readers for more resources
Bi2O3/WO3 porous microspheres were constructed by embedding p-type Bi2O3 nanosheets in n-type WO3 microspheres, showing superior photocatalytic efficiency under visible light. The improved performance was attributed to the p-n junction between Bi2O3 and WO3, as well as the porous three-dimensional hierarchical structure. The mechanism was further elucidated through radical capturing experiments and theoretical analysis, contributing to the theoretical study and application in environmental remediation.
Bi2O3/WO3 porous microspheres were constructed by the p-type Bi2O3 nanosheets firmly embedded in the n-type WO3 microspheres. These composites were systematically characterized by various analytical tools such as XRD, SEM, TEM, UV-DRS, PEC, PL and EIS. Comparing with bare Bi2O3 and WO3 samples, the modified Bi2O3/WO3 composites demonstrate superior photocatalytic efficiency for the photo-degradation of MG dye under visiblelight illustration with excellent stability and repeatability, which can be ascribed to the coupling of p-n junction between the p-type Bi2O3 nanosheets and n-type WO3 microspheres, as well as the porous three-dimensional hierarchical structure. Based on the radical capturing experiments and theoretical analysis, the mechanism for the improved visible-light photocatalytic performance was proposed, which is significant for the theoretical study and application o in environmental remediation.
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