Preparation of high value added chemicals by nanofloral Bi2WO6 photocatalytic oxidation of glycerol

Yan Li; Xinhua Lv; Han Guo

doi:10.1117/12.3016283

1 February 2024 Preparation of high value added chemicals by nanofloral Bi₂WO₆ photocatalytic oxidation of glycerol

Yan Li, Xinhua Lv, Han Guo

Proceedings Volume 13068, Fifth International Conference on Optoelectronic Science and Materials (ICOSM 2023); 1306805 (2024) https://doi.org/10.1117/12.3016283
Event: Fifth International Conference on Optoelectronic Science and Materials (ICOSM 2023), 2023, Hefei, China

Abstract

In this study,Using Bi(NO₃)₃·5H₂O and Na₂WO₄·2H₂O as precursors, nano-flower-like Bi₂WO₆ was prepared by hydrothermal method, and the crystal structure, morphology, optical properties and electrochemical properties were characterized. The experiment was conducted on the photocatalytic oxidation of biomass derivatives (glycerol). The orthogonal experiment was designed to study the influence of light time, catalyst concentration, photocurrent and other factors on the photocatalytic reaction, and explore the reaction mechanism. Qualitative analysis of the product was performed using gas chromatography-mass spectrometry (GC-MS), and quantitative analysis of the product was performed using high-performance liquid chromatography (HPLC). The results show that the prepared Bi₂WO₆ were all nano-flowered structures with a band gap of 2.78eV. The glycerol conversion rate was 97.92% when the catalyst concentration was 10mg, the photocurrent intensity was 4A, and the illumination time was 24h. Active group capture experiments showed that the main active species of Bi₂WO₆ under visible light was ·O₂-. In this study, a commercial P25 catalyst was used for the photocatalytic oxidation of glycerol under optimal conditions. The experimental results show that the catalytic oxidation performance of glycerol by P25 is lower than that of Bi2WO6 nanoflowers.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yan Li, Xinhua Lv, and Han Guo "Preparation of high value added chemicals by nanofloral Bi₂WO₆ photocatalytic oxidation of glycerol", Proc. SPIE 13068, Fifth International Conference on Optoelectronic Science and Materials (ICOSM 2023), 1306805 (1 February 2024); https://doi.org/10.1117/12.3016283

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KEYWORDS

Bismuth

Oxidation

Biodiesel

Biomass

Photocurrent

Light sources and illumination

Transmission electron microscopy

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