Anti-bacterial and super-hydrophilic bamboo charcoal with amidoxime modified for efficient and selective uranium extraction from seawater

Ying Wang, Zaiwen Lin, Hongsen Zhang*, Qi Liu, Jing Yu, Jingyuan Liu, Rongrong Chen, Jiahui Zhu, Jun Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

68 Citations (Scopus)
Plum Print visual indicator of research metrics
  • Citations
    • Citation Indexes: 67
  • Captures
    • Readers: 28
see details

Abstract

With the growing demand for nuclear energy, uranium extraction from seawater (UES) is becoming increasingly important due to the ocean reserves 4.5 billion tons for uranium(VI) [U(VI)]. Herein, two kinds of amidoxime modified bamboo charcoal (AOOBCS and AOOBCH) with porous structure, anti-bacterial, and super-hydrophilic properties were successfully synthetized by two etching methods (soaking and hydrothermal). The super-hydrophilic property of AOOBCH accelerated the contact between the amidoxime group and uranyl ions (UO22+), and promoted the action of anti-bacterial substances (bamboo-quinone) on bacteria to restrain the form of bacterial membrane. In addition, the amidoxime groups not only didn't destroy the super-hydrophilic surface, but also adjusted the adsorbents’ pKa by changing the amidoxime grafting rate. Under PH = 7, the adsorption capacity of AOOBCH was about 1.97 times that of AOOBCS and 2.95 times that of BC. Importantly, the AOOBCH exhibited ultra-high uptake capacity (6.37 mg g−1) and exceptional selectivity for U(VI) in 100-fold interfering ions simulated seawater system due to the chelation between [sbnd]C(NH2)[dbnd]N[sbnd]OH and UO22+ to form a more stable coordination structure (Eads = −36.56 eV). Benefiting from the superior performance and selectivity, the AOOBCH is a potential candidate for UES.

Original languageEnglish
Pages (from-to)455-463
Number of pages9
JournalJournal of Colloid and Interface Science
Volume598
DOIs
Publication statusPublished - 15 Sept 2021
Externally publishedYes

Keywords

  • Amidoxime group
  • Anti-bacterial
  • Bamboo charcoal
  • Super-hydrophilic surface
  • Uranium extraction from seawater

Fingerprint

Dive into the research topics of 'Anti-bacterial and super-hydrophilic bamboo charcoal with amidoxime modified for efficient and selective uranium extraction from seawater'. Together they form a unique fingerprint.

Cite this

Wang, Y., Lin, Z., Zhang, H., Liu, Q., Yu, J., Liu, J., Chen, R., Zhu, J., & Wang, J. (2021). Anti-bacterial and super-hydrophilic bamboo charcoal with amidoxime modified for efficient and selective uranium extraction from seawater. Journal of Colloid and Interface Science, 598, 455-463. https://doi.org/10.1016/j.jcis.2021.03.154