Issue 17, 2021

Simple glycerol-assisted and morphology controllable solvothermal synthesis of CeVO4/BiVO4 hierarchical hollow microspheres with enhanced photocatalytic activities

Abstract

CeVO4 hierarchical hollow microspheres with various morphologies have been synthesized via a simple glycerol (Gl)-assisted solvothermal route. They are constructed using different morphological nanoscaled units (nanoflakes, nanorods and nanowires) by adjusting the solvent ratio of the system. The Gl and L-aspartic acid (L-Asp) molecules act as structure–directing agents, meaning the CeVO4 hierarchical materials feature adjustable structural variations with 0D, 1D, and 2D structures. A possible formation mechanism is proposed based on the Gl content-dependent and time-dependent morphological evolution results. Under visible-light irradiation, the degradation results towards methylene blue (MB) indicate that the photocatalytic performance of the CeVO4/BiVO4 composites could be easily tuned by simply varying the Gl content ratio and the amount of BiVO4 NPs. Compared with pristine CeVO4, the photodegradation efficiency of the hierarchical nanowires-assembled CeVO4/BiVO4 hollow microspheres exhibit a two-fold increase after doping with 10% BiVO4 and the degradation rate reached 97.8% in 30 min. Owing to the easy fabrication, our strategy may provide broad possibilities for the future development of other hollow micro/nanostructures that exhibit an efficient performance.

Graphical abstract: Simple glycerol-assisted and morphology controllable solvothermal synthesis of CeVO4/BiVO4 hierarchical hollow microspheres with enhanced photocatalytic activities

Supplementary files

Article information

Article type
Research Article
Submitted
25 may 2021
Accepted
09 iyl 2021
First published
09 iyl 2021

Mater. Chem. Front., 2021,5, 6522-6529

Simple glycerol-assisted and morphology controllable solvothermal synthesis of CeVO4/BiVO4 hierarchical hollow microspheres with enhanced photocatalytic activities

M. Wang, Y. Guo, Z. Wang, H. Cui, T. Sun and Y. Tang, Mater. Chem. Front., 2021, 5, 6522 DOI: 10.1039/D1QM00770J

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