Molecularly imprinted polymer-based photocatalyst for highly selective degradation of methylene blue
| Autor: | Ming Guo, Liping Sun, Wang Rui, Yinglu Hu, Hongwei Yu |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Molecularly imprinted polymer Nanoparticle 010501 environmental sciences 01 natural sciences Biochemistry Catalysis Methylene Blue 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Molecularly Imprinted Polymers X-Ray Diffraction chemistry Chemical engineering Photocatalysis Nanoparticles Molecule Degradation (geology) 030212 general & internal medicine Fourier transform infrared spectroscopy Molecular imprinting Methylene blue 0105 earth and related environmental sciences General Environmental Science |
| Zdroj: | Environmental Research. 194:110684 |
| ISSN: | 0013-9351 |
| DOI: | 10.1016/j.envres.2020.110684 |
| Popis: | ZnO quantum dots were synthesized by chemical precipitation, CuFe2O4 nanoparticles were prepared by in situ synthesis of cellulose, and then ZnO/CuFe2O4 (ZCF) composites were fabricated. A photocatalyst (ZCF@MB-MIP) with specific molecule recognition and photocatalytic degradation characteristics was then produced by a surface imprinting method using methylene blue (MB) as the template molecule. The structure of ZCF@MB-MIP was characterized by Fourier transform infrared spectroscopy, transmission electron microscopy and X-ray diffraction. The photocatalytic efficiency of ZCF@MB-MIP and its specific recognition performance in MB degradation was analyzed. The adsorption kinetics of MB by ZCF@MB-MIP conformed to the quasi-secondary adsorption kinetics model. ZCF@MB-MIP displayed effective photocatalytic degradation of MB under natural light. The degradation rate reached 95.8%, which was much higher than those of ZCF, CuFe2O4 nanoparticles, and a non-imprinted reference sample under the same conditions. This work is a useful reference for the construction of photocatalysts that show highly selective recognition of dye molecules. |
| Databáze: | OpenAIRE |
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