Room temperature synthesis of novel worm like tin oxide nanoparticles for photocatalytic degradation of organic pollutants
| Autor: | Hua Liu, Veera Sadhu, Sivasankar Koppala, Indranil Banerjee, Kakarla Raghava Reddy, Lei Xu, D. Kishore Kumar, Kangqiang Li, Ramdas Balan |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Photoluminescence Diffuse reflectance infrared fourier transform Materials Science (miscellaneous) Organic dye degradation 02 engineering and technology Energy conservation 010402 general chemistry Photochemistry 01 natural sciences chemistry.chemical_compound Tetragonal crystal system X-ray photoelectron spectroscopy Band gap Chemical Engineering (miscellaneous) High-resolution transmission electron microscopy Materials of engineering and construction. Mechanics of materials Renewable Energy Sustainability and the Environment SnO2 nanoparticles Environmental remediation Photocatalyst Oxygen defect 021001 nanoscience & nanotechnology Sodium stannate Tin oxide TJ163.26-163.5 0104 chemical sciences Fuel Technology chemistry TA401-492 Photocatalysis 0210 nano-technology |
| Zdroj: | Materials Science for Energy Technologies, Vol 4, Iss, Pp 113-118 (2021) |
| ISSN: | 2589-2991 |
| DOI: | 10.1016/j.mset.2021.03.002 |
| Popis: | Herein, we report the synthesis of novel worm like structured SnO2 nanoparticles photocatalysts by chemical precipitation route from sodium stannate in the absence of a precipitating agent. The physico-chemical characteristics of the synthesized SnO2 were studied using powder X-ray diffraction (PXRD), Diffuse Reflectance Spectroscopy (DRS), Photoluminescence (PL), and High resolution transmission electron microscope (HRTEM) studies. PXRD and HRTEM analysis reveals the formation of amorphous SnO2 in the tetragonal crystal structure. XPS and PL characterization affirmed the presence of oxygen defects in SnO2, which could be due to Sn2+ present in the lattices. The optical band gap calculated using Kubelka-Munk method to be 3.8 eV. Photocatalytic studies of the prepared SnO2 catalyst showed 92% of Rhodamine-B (RhB) degradation in 120 min under UV irradiation. The enhanced dye degradation activity is attributed to oxygen defects in the SnO2 catalyst, which are responsible for the enhanced charge separation and inhibition of electron-hole pair recombination by trapping photogenerated electrons. |
| Databáze: | OpenAIRE |
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