Using diethylenetriamine pentamethylene phosphonic acid (DTPMP) as the organic phosphine source,and zirconium oxychloride (ZrOCl2·8H2O) as the inorganic zirconium source,diethylenetriamine pentamethylene phosphate zirconium(Zr-DTPMP) was prepared by hydrothermal method.Afterwards,the organic-inorganic hybrid materials synthesized under different ratios of phosphorus and zirconium were characterized by FT-IR,SEM & EDS,and the initial pH value,contact time,initial concentration of uranium(Ⅵ),temperature and the dosage of adsorbent were used as an influencing factor to study the effect of Zr-DTPMP on the performance of U(Ⅵ) adsorption by static adsorption method.The results showed that P—O—Zr and C—P stretching vibrations appeared in the FT-IR of Zr-DTPMP,indicating that the organic hybrid material was successfully prepared,and the SEM image showed that the surface had abundant pore structure.After adsorption,the energy scattering peak of U(Ⅵ) appeared in the EDS spectrum of Zr-DTPMP,confirming that Zr-DTPMP can remove U(Ⅵ) in the aqueous solution.The best conditions for Zr-DTPMP to adsorb U(Ⅵ) were The ratio of phosphine to zirconium was 5∶1,pH=4.0,adsorption equilibrium time 360min,initial uranium concentration 50mg/L,temperature 298K,and dosage 0.01g.
Chen Rui, Cui Anxi, Zheng Bowen, Xu Wei
. Adsorption of U(Ⅵ) on diethylenetriamine pentamethylene phosphate zirconium[J]. New Chemical Materials, 2021
, 49(3)
: 126
-130
.
DOI: 10.19817/j.cnki.issn 1006-3536.2021.03.028
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