Improved photocatalytic decomposition of aqueous Rhodamine-B by solar light illuminated hierarchical yttria nanosphere decorated ceria nanorods
Autor: | Naif Abdullah Al-Dhabi, Malik Maaza, Selvaraj Arokiyaraj, Noluthando Mayedwa, G. Maria Assuntha Priyadharsini, John Kennedy, Mariadhas Valan Arasu, C. Maria Magdalane, A. B. Isaev, N. Matinise, K. Kaviyarasu, A.K.H. Bashir |
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Jazyk: | angličtina |
Rok vydání: | 2019 |
Předmět: |
010302 applied physics
lcsh:TN1-997 Materials science Metals and Alloys 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Surfaces Coatings and Films Biomaterials Cerium nitrate Rhodamine chemistry.chemical_compound chemistry Chemical engineering 0103 physical sciences Ceramics and Composites Photocatalysis Rhodamine B Nanorod 0210 nano-technology Luminescence Yttria-stabilized zirconia lcsh:Mining engineering. Metallurgy Visible spectrum |
Zdroj: | Journal of Materials Research and Technology, Vol 8, Iss 3, Pp 2898-2909 (2019) |
ISSN: | 2238-7854 |
Popis: | We report the new synthesis route of hierarchical yttria (Y2O3) nanosphere decorated ceria (CeO2) nanorods from the precursor cerium nitrate and yttrium nitrate under hydrothermal method (HM). Synthesized nanorods (NRs) were analyzed by different techniques to investigate their textural morphology, size and shape of nanorods and crystalline structures, morphology growth, optical activity and sizes of the samples. The luminescence blue peaks were observed in the range of 450–490 nm and green emission appeared at 533 nm at the room temperature (RT), the presence of oxygen vacancies was confirmed. The photodecomposition nature of the prepared nanosamples was investigated by using the industrial effluent Rhodamine-B (RhB) dye in aqueous medium by the illumination of solar light. The photocatalytic degradation efficiency showed 95.8% for RhB after 240 min. On illumination of visible light, the catalyst was found to tend to produce reactive oxygen species (ROS), which might account for the decay of dyes into small fractions. The enhanced photocatalytic effect of the synthesized NRs was primarily ascribed to the rising in the separation efficiency of electrons and holes. Keywords: Photocatalytic effect, Ceria, Yttria, Electron microscopy, Rhodamine-B (RhB) |
Databáze: | OpenAIRE |
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