NiCo普鲁士蓝类似物中空纳米泡的制备及其Cs+吸附性能研究

doi:10.19964/j.issn.1006-4990.2023-0549

Abstract

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

CLC Number:

TQ131.15

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.

Figures/Tables 16

Fig.1

Fig.2

Fig.3

Fig.4

Fig.5

Table 1

Fig.6

Table 2

Table 3

Fig.7

Fig.8

Fig.9

Fig.10

Fig.11

Fig.12

Table 4

Comparison of adsorption capacity between adsorbent in this article and adsorbent reported in literature"

样品

$q m$ /

（mg·g^-1）

样品

$q m$ /

（mg·g^-1）

KATS-2^［29］

359

5KCuFC/M-MT^［31］

204.48

ZHF^［30］

190.5

K@GaSnS-1^［32］

249.3

PBA_Cu^［25］

97.78

NiCo-PBA HNB

317.59

Table 4

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

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