Facile synthesis of Y2S3/ZnO nanocomposite and its catalytic performance in the degradation of Methylene Blue using UV-A/solar illumination
| Autor: | Abilio J.F.N. Sobral, A. Senthilraja, B. Subash, Balu Krishnakumar, M. Shanthi, Meenakshisundaram Swaminathan, Shaik Abdullah Nawabjan |
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| Rok vydání: | 2016 |
| Předmět: |
Nanocomposite
Materials science Photoluminescence Diffuse reflectance infrared fourier transform Scanning electron microscope Process Chemistry and Technology Analytical chemistry 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences X-ray photoelectron spectroscopy Photocatalysis 0210 nano-technology Safety Risk Reliability and Quality Spectroscopy Waste Management and Disposal Biotechnology Nuclear chemistry BET theory |
| Zdroj: | Journal of Water Process Engineering. 12:32-40 |
| ISSN: | 2214-7144 |
| DOI: | 10.1016/j.jwpe.2016.06.002 |
| Popis: | Y2S3/ZnO nanocomposite synthesized by a facile precipitation method combined with a mild ultrasonic technique. Y2S3/ZnO was characterized using X-ray diffraction (XRD), Scanning electron microscopy (FE-SEM), Elemental colour mapping, Transmission electron microscopy (TEM), UV–vis diffuse reflectance spectroscopy (UV–vis DRS), Photoluminescence spectroscopy (PLS), X-ray photoelectron spectroscopy (XPS) and BET surface area measurements. Photocatalytic activity of Y2S3/ZnO was evaluated by the degradation of Methylene Blue (MB, an organic dye) as a model pollutant using UV-A/solar light. The 10.1 wt% Y2S3/ZnO degraded dye completely within 60 min at neutral pH 7. It is more efficient than bare ZnO, commercial ZnO, TiO2-P25 and TiO2 (Aldrich). The superior photocatalytic performance of 10.1 wt% Y2S3/ZnO is attributed to high UV-A/solar light absorption as well as effective charge carrier separation. A possible mechanism of photocatalysis is proposed. This novel composite material has potential applications in the industrial effluent treatment at the neutral pH 7. |
| Databáze: | OpenAIRE |
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