Inorganic Chemicals Industry >

2024 , Vol. 56 >Issue 10: 55 - 63

DOI: https://doi.org/10.19964/j.issn.1006-4990.2023-0549

Research & Development

Study on preparation of NiCo Prussian blue analogue hollow nanobubbles and their Cs+ adsorption properties

  • WANG Hangyu ,
  • DU Yifa ,
  • GUO Xia ,
  • NA Yuxuan ,
  • WAN Macuo ,
  • ZHOU Yongquan
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  • 1.Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources，Qinghai Institute of Salt Lakes，Chinese Academy of Sciences，Xining 810008，China
    2.University of Chinese Academy of Sciences，Beijing 100049，China
    3.School of Chemistry and Chemical Engineering，Linyi University，Linyi 276300，China
    4.Qinghai Normal University，College of Chemistry and Chemical Engineering，Xining 810008，China

Received date: 2023-11-18

  Online published: 2024-11-05

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Abstract

The efficient separation of cesium ions（Cs+） is significant in resource utilization and ecological security.Developing an adsorbent for Cs+ with high capacity and selectivity is challenging.In this work，nickel cobalt Prussian blue analog （NiCo-PBA） hollow nanobubble adsorbent（NiCo-PBA HNB） was successfully synthesized using a prism⁃shaped tetragonal cobalt nickel acetate precursor as a template using a self⁃template method to remove cesium ions（Cs+） from aqueous solutions effectively.The NiCo-PBA HNB was characterized by Fourier transform infrared spectroscopy（FT-IR），X-ray diffraction（XRD），transmission electron microscopy（TEM），and energy dispersive spectroscopy（EDS）.NiCo-PBA HNB had a high specific surface area（195.09 m2/g） and a uniform mesoporous structure（10.21 nm）.Thanks to its unique nanostructure and pore characteristics，NiCo-PBA HNB could reach adsorption equilibrium within 30 minutes，with a maximum adsorption capacity of 317.59 mg/g，and the adsorption process conformed to a quasi⁃second⁃order kinetic model.Even in high concentrations of K+（0.1 mol/L），the distribution coefficient（8.82×103 mL/g） remained at a high level.In addition，the adsorption mechanism of NiCo-PBA HNB mainly involved ion exchange between K+ in the crystal and Cs+ in the solution.

Key words： self template method; nickel cobalt prussian blue analogue; hollow bubble structure; cesium adsorbent

Cite this article

WANG Hangyu , DU Yifa , GUO Xia , NA Yuxuan , WAN Macuo , ZHOU Yongquan . Study on preparation of NiCo Prussian blue analogue hollow nanobubbles and their Cs+ adsorption properties[J]. Inorganic Chemicals Industry, 2024 , 56(10) : 55 -63 . DOI: 10.19964/j.issn.1006-4990.2023-0549

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