UIO-66-NH2 modified by BPDA for adsorption studies of U(VI).

Autor:	Chen, Xiaoli, Xu, Dongyang, Guo, Shuaishuai, Chen, Jinlu, Zhou, Yi, Liu, Dandan, Tan, Songbo, Peng, Guowen
Předmět:	ADSORPTION (Chemistry) LANGMUIR isotherms CHEMICAL stability PSEUDOPOTENTIAL method THERMAL stability
Zdroj:	Journal of Radioanalytical & Nuclear Chemistry; Jan2024, Vol. 333 Issue 1, p531-544, 14p
Abstrakt:	In this study, a crystal material UIO-66-NH2-BPDA was designed by grafting BPDA onto UIO-66-NH2 and applied to extract U(VI) from aqueous solution. According to performance tests, UIO-66-NH2-BPDA exhibits excellent chemical and thermal stability. The experimental results show that U(VI) adsorption by UIO-66-NH2-BPDA was tested to be 346.58 mg g−1 at pH = 4 and T = 298 K. The data simulation demonstrates that the adsorption process was consistent with Langmuir isotherm and pseudo-second-order model. Meanwhile, the thermodynamic parameters suggest that the adsorption process was spontaneous and endothermic. Most noteworthy is the good selectivity for U(VI) adsorption by UIO-66-NH2-BPDA. It can be seen that UIO-66-NH2-BPDA can be used as a potential effective adsorbent to remove U(VI) from wastewater. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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