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A novel mesoporous material for uranium extraction, dihydroimidazole functionalized SBA-15
Yuan LY(袁立永); Yuan, LY; Shi WQ(石伟群); Liu, YL; Shi, WQ; Li, ZJ; Lan, JH; Feng, YX; Zhao, YL; Yuan, YL; Chai, ZF; Li ZJ(李子杰); Lan JH(蓝建慧); Feng YX(冯一潇); Zhao YL(赵宇亮); Chai ZF(柴之芳)
AbstractDue to the rapid development of the nuclear power industry, and consequently, the nuclear accident in Fukushima, much attention has been paid to novel materials for the efficient and rapid separation, removal and recovery of nuclear fuel associated radionuclides from aqueous solutions. Herein, a novel mesoporous material, dihydroimidazole functionalized SBA-15 (DIMS), was synthesized via a post-grafting method and used as an efficient sorbent for the extraction of U(VI) from aqueous solution. The synthesized material was found to possess highly ordered mesoporous structures with a large surface area and a uniform pore diameter. The sorption tests under various conditions demonstrated that the sorption of U(VI) by DIMS was fast, with an equilibrium time of less than 10 min. Additionally, the maximum sorption capacity reached 268 mg g(-1) at pH 5.0 +/- 0.1. Changes in the solid-to-liquid ratio (m(sorbent)/V-solution) did not have any remarkable effect on the U(VI) sorption. Besides, the sorbed U(VI) can be easily desorbed by 0.01 mol L-1 or more concentrated HNO3 solution, resulting in a U(VI) solution with a concentration factor of 300 at a solid-liquid ratio as low as 0.013 g L-1. The reclaimed sorbent can be reused with no obvious decrease in the sorption capacity. The selectivity of the DIMS sorbent for U(VI) ions was found to be fairly desirable by the sorption tests with the solutions containing a range of competing metal ions.
Subject AreaChemistry; Materials Science
Indexed BySCI
WOS IDWOS:000306972900047
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Document Type期刊论文
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GB/T 7714
Yuan LY,Yuan, LY,Shi WQ,et al. A novel mesoporous material for uranium extraction, dihydroimidazole functionalized SBA-15[J]. JOURNAL OF MATERIALS CHEMISTRY,2012,22(33):17019-17026.
APA 袁立永.,Yuan, LY.,石伟群.,Liu, YL.,Shi, WQ.,...&柴之芳.(2012).A novel mesoporous material for uranium extraction, dihydroimidazole functionalized SBA-15.JOURNAL OF MATERIALS CHEMISTRY,22(33),17019-17026.
MLA 袁立永,et al."A novel mesoporous material for uranium extraction, dihydroimidazole functionalized SBA-15".JOURNAL OF MATERIALS CHEMISTRY 22.33(2012):17019-17026.
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