Decorative ZIF-8 covered facet-dependent Cu2O toward highly efficient adsorption by reduction U(VI) to U(IV)

文献类型： 外文期刊

第一作者： Xu, Lei

作者： Xu, Lei;Tang, Shaochun;Zhang, Xiaomei;Yan, Nina;Wang, Min;Jiang, Xizhi;Xu, Rui;Feng, Min;Xu, Lei;Zhang, Xiaomei;Yan, Nina;Wang, Min;Jiang, Xizhi;Xu, Rui;Feng, Min;Xu, Lei

作者机构：

关键词： Facet-dependent; Cu2O@ZIF-8; U(VI); reduction; radioactive wastewater

期刊名称：JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING （ 影响因子：7.7； 五年影响因子：7.3 ）

ISSN： 2213-2929

年卷期： 2023 年 11 卷 4 期

页码：

收录情况： SCI

摘要： Developing high-performance materials for efficient and ultra-high capacity of U(VI) removal in radioactive wastewater remains a great challenge. Herein, we report the design and fast microwave-assisted scalable syn-thesis of novel facet-dependent Cu2O@ZIF-8 particles for highly effective reduction to U(IV) at the surface. and separation of the U(VI) ions from aqueous solutions. The Cu2O@ZIF-8 consists of polyhedral Cu2O crystals with dispersed ZIF-8 nanoparticles on their facets, which results in generation of a large number of highly active interfaces. The Cu2O@ZIF-8 shows strong facet-dependence towards the reduction U(VI) ions to U(IV) at the surface where octahedral Cu2O crystals performed better comparing with cubic and octahedral ones. The optimal octahedral Cu2O@ZIF-8 particles exhibit remarkable adsorption capability reaching 330.87 mg g-1, much higher than previously reported values for other adsorption materials. The involved mechanism was investigated, and the adsorption manifestation was found to be in accord with Freundlich isotherm and pseudo-second-order ki-netic behaviors. This work provides a new route to improve U(VI) adsorption capability for highly efficient treatment of radioactive wastewater.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序