Binary metal oxide nanoparticle incorporated composite multilayer thin films for sono-photocatalytic degradation of organic pollutants
| Autor: | R. Vinoth, Bernaurdshaw Neppolian, Paramasivam Gokul, S. Anandhakumar |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Scanning electron microscope Oxide General Physics and Astronomy Nanoparticle Nanotechnology 02 engineering and technology 010402 general chemistry 01 natural sciences Catalysis law.invention chemistry.chemical_compound law Methyl orange Thin film Graphene technology industry and agriculture Surfaces and Interfaces General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Surfaces Coatings and Films chemistry Chemical engineering Photocatalysis 0210 nano-technology |
| Zdroj: | Applied Surface Science. 418:119-127 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2016.12.232 |
| Popis: | We report reduced graphene oxide (rGO) supported binary metal oxide (CuO–TiO 2 /rGO) nanoparticle (NP) incorporated multilayer thin films based on Layer-by-Layer (LbL) assembly for enhanced sono-photocatalytic degradation of methyl orange under exposure to UV radiation. Multilayer thin films were fabricated on glass and quartz slides, and investigated using scanning electron microscopy and UV–vis spectroscopy. The loading of catalyst NPs on the film resulted in the change of morphology of the film from smooth to rough with uniformly distributed NPs on the surface. The growth of the control and NP incorporated films followed a linear regime as a function of number of layers. The%degradation of methyl orange as a function of time was investigated by UV–vis spectroscopy and total organic carbon (TOC) measurements. Complete degradation of methyl orange was achieved within 13 h. The amount of NP loading in the film significantly influenced the%degradation of methyl orange. Catalyst reusability studies revealed that the catalyst thin films could be repeatedly used for up to five times without any change in photocatalytic activity of the films. The findings of the present study support that the binary metal oxide catalyst films reported here are very useful for continuous systems, and thus, making it an option for scale up. |
| Databáze: | OpenAIRE |
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