Construction 3D rod-like Bi3.64Mo0.36O6.55/CuBi2O4 photocatalyst for enhanced photocatalytic activity via a photo-Fenton-like Cu2+/Cu+ redox cycle
| Autor: | Hui Xu, Huaming Li, Mingqiang He, Ying Lan, Qiting Guo, Yuanguo Xu, Liquan Jing |
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| Rok vydání: | 2021 |
| Předmět: |
Composite number
chemistry.chemical_element Nanoparticle Filtration and Separation 02 engineering and technology 021001 nanoscience & nanotechnology Copper Analytical Chemistry Catalysis chemistry.chemical_compound 020401 chemical engineering chemistry Chemical engineering Photocatalysis Methyl orange Rhodamine B Degradation (geology) 0204 chemical engineering 0210 nano-technology |
| Zdroj: | Separation and Purification Technology. 254:117546 |
| ISSN: | 1383-5866 |
| DOI: | 10.1016/j.seppur.2020.117546 |
| Popis: | Bi3.64Mo0.36O6.55/CuBi2O4 composite was firstly synthesized by decorating Bi3.64Mo0.36O6.55 nanoparticles on the CuBi2O4 nanorods. The photo-Fenton-like system of copper-based composite catalyst was fabricated for highly efficient degradation pollution. The composite can catalyze the decomposition of H2O2 and improve Cu+ generation efficiency. Bi3.64Mo0.36O6.55/CuBi2O4 catalyst showed an excellent degradation activity for tetracycline hydrochloride more than 3.5 times higher than pure CuBi2O4, and the photo-degradation rate closed to 82.7% degradation after 30 min. The trapping experiments and electron spin resonance demonstrated that OH, O2– and h+ played an important role in the Bi3.64Mo0.36O6.55/CuBi2O4 system. Moreover, the effects of pH value, H2O2, catalyst content and pollution concentration on the photo-degradation over this system were explored. Furthermore, the system still had high activity for photo-degradation of other organic pollutants such as rhodamine B, methyl orange and methylene blue. This study has supplied a neoteric method to construct copper-based heterogeneous photo-Fenton-like catalysts for effective photo-degrading pollutant. |
| Databáze: | OpenAIRE |
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