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| Photocatalytic Properties of Tin Sulfide with Different Morphologies to Uranium Hexavalent |
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Received:January 01, 2024
Revised:January 08, 2024
Accepted:January 15, 2024
Published Online:April 16, 2024
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| DOI：doi：10.3969/j.issn.1007-7545.2024.05.019 |
| KeyWord:SnS2; photocatalysis; U(Ⅵ); photoreduction |
| Author | Institution |
| LIU Chang |
东华理工大学 |
| DOU lin |
四川轻化工大学 |
| ZHANG Yishuo |
东华理工大学 |
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| Abstract: |
| Tin sulfide (SnS2) with different morphologies (flake, granular, rod and flower) were prepared by simple hydrothermal method by changing raw materials, controlling reaction time and temperature. The crystal phases and morphologies of SnS2 were confirmed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The optical properties of the materials were analyzed by UV-vis diffuse reflection (UV-vis DRS) and fluorescence spectroscopy (PL). The effects of different morphology of SnS2, pH value, initial concentration of uranium and dosage of catalyst on the photoreduction process of hexavalent uranium (U(Ⅵ)) were investigated. The results show that 50 mg SnS2 with particle form has the highest photoreduction performance of uranium at pH 5.0. The photoreduction rate rises gradually with the increase of initial concentration of uranium. Finally, the reduced valence state of uranium is confirmed to be quadruvalent, and the influence of different atmosphere on the photoreduction process is investigated. |
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