Marinobacter sp. Stable Hydrous Titanium Oxide-Functionalized Bovine Serum Albumin Nanospheres for Uranium Capture from Spiked Seawater

文献类型： 外文期刊

第一作者： Yu, Jie

作者： Yu, Jie;Liao, Hui;Luo, Xuegang;Zhou, Jian;Zhu, Wenkun;Duan, Tao;Lin, Xiaoyan;Wang, Shanlin;Zhang, Yongde;Kuang, Meng

作者机构：

关键词： spiked seawater; uranium; marine microbial stability; hydrous titanium oxide; adsorption

期刊名称：ACS APPLIED MATERIALS & INTERFACES （ 影响因子：9.229； 五年影响因子：9.57 ）

ISSN： 1944-8244

年卷期： 2019 年 11 卷 43 期

页码：

收录情况： SCI

摘要： A novel nanospherical hydrous titanium oxide adsorbent (hydrous titanium oxide-immobilized bovine serum albumin nanospheres, HTO-BSA-NSs) was prepared by immobilizing HTOs with a manipulated molecular mass and number of active sites for uranium on the surface of BSA-NSs. The adsorption performances of HTO-BSA-NSs were investigated in spiked natural seawater with extra 8 ppm uranium. The results demonstrated that HTO-BSA-NSs are capable of uranium capture from a complex aqueous matrix with a low uranium concentration. Meanwhile, the microbial stability of HTO-BSA-NSs in sterilized natural seawater with Marinobacter sp. was investigated and observed through an optical microscope and TEM, revealing that the wrapped HTOs could protect the BSA-NSs from the decomposition of microorganisms, and the structure and functional groups of HTO-BSA-NSs remain stable compared with the BSA-NSs. In addition, the uranium adsorption mechanism of HTO-BSA-NSs is mainly recognized as dehydrated complexation, which was concluded from characterization analysis, adsorption model fitting, and theoretical calculations based on density functional theory. The remarkable uranium adsorption performance and microbial stability of HTO-BSA-NSs indicated that they have the potential to be a low-cost and environmentally friendly adsorbent for uranium extraction from complex environments such as seawater or uranium-containing industrial wastewater.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序