Size engineered Cu-doped α-MnO2 nanoparticles for exaggerated photocatalytic activity and energy storage application
| Autor: | Biplab Kumar Paul, Dheeraj Mondal, Sukhen Das, Santanu Das, Debopriya Bhattacharya, A. L. Gayen, Debopriyo Ghoshal, Kaustuv Das |
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| Rok vydání: | 2019 |
| Předmět: |
Aqueous solution
Materials science Mechanical Engineering Nanoparticle Sintering 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Capacitance 0104 chemical sciences chemistry.chemical_compound Chemical engineering Brilliant green chemistry Mechanics of Materials Photocatalysis Degradation (geology) General Materials Science Cyclic voltammetry 0210 nano-technology |
| Zdroj: | Materials Research Bulletin. 115:159-169 |
| ISSN: | 0025-5408 |
| DOI: | 10.1016/j.materresbull.2019.03.023 |
| Popis: | This investigation involves the synthesis of Cu doped α-MnO2 nanoparticles through modified Chemical route. Obtained nanoparticles (diameter_˜5 nm to ˜18 nm) are found mostly stable at high temperature and its size can be modulated by Cu doping and post sintering temperature variation. Cyclic voltammetry and galvanostatic charge-discharge performance indicate the excellent cycling stability along with a maximum capacitance of 229.5 F/g for current density of 1 A/g. Our fabricated device is also capable to power up 73 numbers of LED for 10 min after being charged for 10 s. From the photocatalytic experiment, degradation efficiency of 73.1% has been achieved by using even ultra diluted aqueous solution (0.0025 g/L) of active material to degrade the pollutant dye like Brilliant Green of 5 ppm concentration. Entire results suggest that the synthesized materials are the promising candidate to be used in photocatalysis and supercapacitive application purpose. |
| Databáze: | OpenAIRE |
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