| Issue |
MATEC Web Conf.
Volume 376, 2023
Conference on Advanced Materials for Engineering and Functional Purposes (AMEFP 2022)
|
|
|---|---|---|
| Article Number | 01004 | |
| Number of page(s) | 6 | |
| Section | Advanced Materials Technologies and Application | |
| DOI | https://doi.org/10.1051/matecconf/202337601004 | |
| Published online | 13 April 2023 | |
Synthesis and characterization of SiO2/Bi2WO6 based on biogenic silica synthesized by sol-gel method
1 Far Eastern Federal University, Vladivostok, Russian Federation
2 Institute of Chemistry, Far-Eastern Branch, Russian Academy of Sciences, Vladivostok, Russian Federation
* Corresponding author: mitkina.pi@students.dvfu.ru
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.
© The Authors, published by EDP Sciences, 2023
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