Photocatalytic Removal of U(VI) from Wastewater via Synergistic Carbon-Supported Zero-Valent Iron Nanoparticles and S. Putrefaciens,ACS Applied Nano Materials

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Photocatalytic Removal of U(VI) from Wastewater via Synergistic Carbon-Supported Zero-Valent Iron Nanoparticles and S. Putrefaciens
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2020-01-21 , DOI: 10.1021/acsanm.9b01581
Shuhong Xiang _{1,

2} , Wencai Cheng _{1,

2} , Fangting Chi ₂ , Xiaoqin Nie _{1,

2} , Tasawar Hayat ₃ , Njud S. Alharbi ₄

Affiliation

In this study, nanoscale zero-valent iron (nZVI) particles were synthesized on fullerene, carbon nanotubes, and graphene to use with S. putrefaciens for U(VI) reduction under light conditions. Of the three composites, the nZVI-carbon nanotube (nZVI-CNT) composites removed the highest amount of U(VI) of 1210.9 mg/g. The nZVI-CNT composites and S. putrefaciens exhibited a synergistic effect on U(VI) reduction under light conditions. X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) results revealed the presence of U(IV) species on the reacted bio-nZVI-CNT. S. putrefaciens might decrease the interfacial energy barrier of the photocatalytic reduction process in the bio-nZVI-CNT system. This work highlights the enhanced U(VI) removal capacity of the complex nZVI-CNT and electricigen hybrid system and provides a promising strategy for wastewater treatment.

中文翻译：

通过协同碳载零价铁纳米粒子和腐殖酵母光催化去除废水中的铀（Ⅵ）

在这项研究中，在富勒烯，碳纳米管和石墨烯上合成了纳米级零价铁（nZVI）颗粒，与腐烂链球菌一起用于在光照条件下还原U（VI）。在这三种复合物中，nZVI-碳纳米管（nZVI-CNT）复合物去除的U（VI）最高，为1210.9 mg / g。所述的nZVI-CNT复合材料和S. putrefaciens表现出光条件下对U（Ⅵ）还原的协同效应。X射线光电子能谱（XPS）和X射线衍射（XRD）结果表明，已反应的生物nZVI-CNT上存在U（IV）物种。腐烂链球菌可能会降低生物nZVI-CNT系统中光催化还原过程的界面能垒。这项工作强调了复杂的nZVI-CNT和电力混合系统的U（VI）去除能力增强，并为废水处理提供了有希望的策略。

更新日期：2020-01-22

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