Nanoscale zero-valent iron/zinc oxide flower-like heterostructure composites: synthesis and removal of selenium in aqueous solution

Micro & nano letters

article

Xiaohai Bu¹  Jintao Yang¹  Xian Zhang¹  Dongxian Li¹  Mingxin Feng¹  Qiang Fu¹ 

[1] School of Materials Science and Engineering, Nanjing Institute of Technology;Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology;School of Chemistry and Chemical Engineering, Southeast University

关键词: zinc compounds;    selenium;    pH;    nanoparticles;    contamination;    nanofabrication;    wastewater treatment;    nanocomposites;    contaminated site remediation;    chemical engineering;    reaction rate constants;    disperse systems;    iron compounds;    aqueous solution;    nanoscale zero-valent iron-zinc oxide flower;    heterostructure composites;    selenium;    Se(IV) removal;    morphological identification;    ZnO nanosheets;    Se(IV) immobilisation;    pristine flower;    pH value;    initial Se(IV) concentration;    Se-contaminated wastewater remediation;    nZVI nanoparticles dispersion;    Se;    FeO-ZnO;   

DOI  :  10.1049/mnl.2019.0769

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

In this work, novel flower-like nanoscale zero-valent iron/zinc oxide heterostructure composites were prepared, characterised and used for the enhanced removal of Se(IV) from water. The morphological identification showed that nZVI nanoparticles were uniformly loaded on ZnO nanosheets to minimise their aggregation. Batch experimental results demonstrated that the composites exhibited higher removal efficiency and rate constant on Se(IV) immobilisation than pristine flower-like ZnO and nZVI because of the enhanced dispersion of nZVI nanoparticles. Solution pH, initial Se(IV) concentration as well as interfering ions that affect the removal capacity of Se(IV) were further studied. These results suggested that the composites could be a promising candidate for the potential application in effective remediation of Se-contaminated wastewater.

【 授权许可】

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