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投稿时间：2024-01-01 修订日期：2024-01-08 录用日期：2024-01-15 网络发布日期：2024-04-16
投稿时间：2024-01-01 修订日期：2024-01-08 录用日期：2024-01-15 网络发布日期：2024-04-16
中文摘要: 采用简便的水热法，通过改变原料、控制反应时间和温度制备了不同形貌（片状、颗粒状、棒状和花状）的硫化锡（SnS2），通过X射线衍射（XRD）和扫描电子显微镜（SEM）对材料的晶相和形貌进行了确认，利用紫外-可见漫反射（UV-vis DRS）和荧光光谱（PL）对材料的光学特征进行了分析。并探究了不同形貌SnS2、pH、铀初始浓度及催化剂投加量对六价铀（U（Ⅵ））光还原过程的影响。结果表明，50 mg颗粒形态的SnS2，在pH=5.0的条件下具有最高的铀光还原性能，此外，随着铀初始浓度升高，光还原率也逐步升高。最后，确认了铀的还原价态为四价，同时探明了不同气氛对光还原过程的影响。
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.
keywords: SnS2 photocatalysis U(Ⅵ) photoreduction
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基金项目:绿色催化四川省高校重点实验室开放基金资助项目（LQF2201）；国家自然科学基金资助项目(41662024)；江西省重点研发计划重点项目(20212BBG71011)；东华理工大学研究生创新基金（YC2022-s614）
| 作者 | 单位 | |
| 刘畅 | 东华理工大学 | 1339819502@qq.com |
| 窦琳* | 四川轻化工大学 | doulindoulin@163.com |
| 张益硕 | 东华理工大学 |
| Author Name | Affiliation | |
| LIU Chang | East China University of Technology | 1339819502@qq.com |
| DOU lin | Sichuan University of Science & amp Engineering | doulindoulin@163.com |
| ZHANG Yishuo |
引用文本：
刘畅,窦琳,张益硕.不同形貌硫化锡对六价铀的光催化性能及机理[J].有色金属（冶炼部分）,2024(5):144-150.
LIU Chang,DOU lin,ZHANG Yishuo.Photocatalytic Properties of Tin Sulfide with Different Morphologies to Uranium Hexavalent[J].Nonferrous Metals (Extractive Metallurgy),2024(5):144-150.
刘畅,窦琳,张益硕.不同形貌硫化锡对六价铀的光催化性能及机理[J].有色金属（冶炼部分）,2024(5):144-150.
LIU Chang,DOU lin,ZHANG Yishuo.Photocatalytic Properties of Tin Sulfide with Different Morphologies to Uranium Hexavalent[J].Nonferrous Metals (Extractive Metallurgy),2024(5):144-150.
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