Synthesis and characterization of SiO2/Bi2WO6 based on biogenic silica synthesized by sol-gel method
| Autor: | Arefieva Olga D., Vasilyeva Marina S., Mitkina Praskovya I., Slavenskaya Aleksandra I., Kuryavy Valery G. |
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| Jazyk: | English<br />French |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | MATEC Web of Conferences, Vol 376, p 01004 (2023) |
| Druh dokumentu: | article |
| ISSN: | 2261-236X 20233760 |
| DOI: | 10.1051/matecconf/202337601004 |
| Popis: | SiO2/Bi2WO6 photocatalyst with Si/Bi/W=1:2:1 molar ratio was obtained by the sol-gel method from bismuth nitrate, sodium tungstate and biogenic silica from rice husk biomass followed by calcination. Bi2WO6 was used as a control sample. FT-IR, SEM, XRD, EDXRF, UV-Vis methods were used to systematically characterize the as-obtained materials. Photodegradation of Indigo Carmine in exposure to UV, sunlight and xenon light was studied to evaluate their photocatalytic activities in the presence of SiO2/Bi2WO6 and Bi2WO6. It was shown that the degradation degree of Indigo Carmine in the presence of SiO2/Bi2WO6 under the action of UV irradiation and sunlight reaches 36% and 14%, respectively. The SiO2/Bi2WO6 sample is stable during photocatalytic studies. |
| Databáze: | Directory of Open Access Journals |
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