Marinobacter sp. Stable Hydrous Titanium Oxide-Functionalized Bovine Serum Albumin Nanospheres for Uranium Capture from Spiked Seawater,ACS Applied Materials & Interfaces

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Marinobacter sp. Stable Hydrous Titanium Oxide-Functionalized Bovine Serum Albumin Nanospheres for Uranium Capture from Spiked Seawater
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2019-10-17 , DOI: 10.1021/acsami.9b14542
Jie Yu , Hui Liao , Wenkun Zhu , Tao Duan , Shanlin Wang ₁ , Meng Kuang ₂ , Yongde Zhang ₁ , Xiaoyan Lin , Xuegang Luo , Jian Zhou

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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.

中文翻译：

Marinobacter sp。稳定的水合氧化钛功能化牛血清白蛋白纳米球，用于捕获尖峰海水中的铀

通过将HTO固定在BSA-NSs的表面上，将具有受控分子质量和铀活性位点数量的HTO固定，制备了一种新型的纳米球形水合氧化钛吸附剂（水合氧化钛固定的牛血清白蛋白纳米球，HTO-BSA-NSs）。研究了HTO-BSA-NSs在加标有8 ppm铀的加标天然海水中的吸附性能。结果表明，HTO-BSA-NSs能够从低铀浓度的复杂含水基质中捕获铀。同时，HTO-BSA-NSs在Marinobacter灭菌的天然海水中的微生物稳定性sp。通过光学显微镜和TEM观察和观察，发现包裹的HTOs可以保护BSA-NSs免受微生物的分解，并且与BSA-NSs相比，HTO-BSA-NSs的结构和官能团保持稳定。此外，HTO-BSA-NSs的铀吸附机理主要被认为是脱水络合，它是通过表征分析，吸附模型拟合以及基于密度泛函理论的理论计算得出的结论。HTO-BSA-NS具有出色的铀吸附性能和微生物稳定性，表明它们有可能成为一种低成本，环保型吸附剂，可用于从复杂环境（例如海水或含铀的工业废水）中提取铀。

更新日期：2019-10-17

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