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首页> 外文期刊>RSC Advances >Photo-synergistic promoted in situ generation of Bi-0-BiSbO4 nanostructures as an efficient catalyst for nitrobenzene reduction
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Photo-synergistic promoted in situ generation of Bi-0-BiSbO4 nanostructures as an efficient catalyst for nitrobenzene reduction

机译：光协同促进Bi-0-BiSbO4纳米结构的原位生成作为硝基苯还原的有效催化剂

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This work reports on the synthesis of BiSbO4 micro-flowers by a facile hydrothermal method. All as-prepared samples were carefully characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. TEM and XPS results indicated that partial Bi3+ ions in BiSbO4 nanoparticles were in situ converted into metallic bismuth to form Bi-0-BiSbO4 nanostructures in the presence of NaBH4 during the reduction of 4-nitrophenol. The as-prepared Bi-0-BiSbO4 was found to be an efficient, renewable and green noble metal free catalyst toward catalytic reduction of nitrobenzenes. Moreover, UV light can promote the reduction of Bi3+ to metallic bismuth, which can robustly and photo-synergistically accelerate the apparent reaction rate for catalytic reduction of nitrobenzenes into aminobenzenes. The in situ generation of Bi-0-BiSbO4 nanostructures may provide new possibilities for the development of novel bismuth-based systems for catalytic applications.
机译：这项工作报告了通过简便的水热法合成BiSbO4微花。所有制备的样品均通过X射线衍射，扫描电子显微镜，透射电子显微镜和X射线光电子能谱进行了仔细表征。 TEM和XPS结果表明，在4-硝基苯酚还原过程中，在NaBH4存在下，BiSbO4纳米颗粒中的部分Bi3 +离子被原位转化为金属铋，形成Bi-0-BiSbO4纳米结构。发现制备的Bi-0-BiSbO4是一种高效，可再生的绿色无贵金属催化剂，可催化还原硝基苯。此外，紫外线可以促进Bi3 +还原为金属铋，这可以鲁棒且光协同地加速表观反应速率，从而将硝基苯催化还原为氨基苯。 Bi-0-BiSbO4纳米结构的原位生成可能为开发新型的基于铋的催化应用系统提供新的可能性。

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