Synthesis of three-dimensional flower-like alpha-Fe2O3 microspheres for high efficient removal of radiocobalt
Synthesis of three-dimensional flower-like alpha-Fe2O3 microspheres for high efficient removal of radiocobalt
复制标题
高效去除放射性钴的三维花状α-Fe2O3微球的合成
DOI：
10.1007/s10967-017-5534-1
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发表时间：
2017
影响因子：
1.6
通讯作者：
Xu Jinzhang
中科院分区：
文献类型：
--
作者：
Guo Zhiqiang;Ling Qiang;Zhou Yusheng;Wei Lin;Zhou Ru;Niu Haihong;Li Yuan;Xu Jinzhang
本研究通过简便的化学浴法合成了三维花状α-Fe2O3(F-Fe2O3)微球，并通过XRD、FE-SEM、TEM和BET比表面积进行了表征。在 298 K、pH 6.5 条件下，F-Fe2O3 对 60 Co(II) 的最大吸附容量达到 6.78 × 10−4mol/g。 pH 和离子强度实验表明，F-Fe2O3 向 60Co(II) 的去除主要是在 pH < 7.5 时通过离子交换和/或外球表面络合，以及在 pH > 7.5 时通过内球表面络合作用。总之，F-Fe2O3微球可以作为一种经济有效的材料用于去除废水中的60Co(II)。
In this study, three-dimensional flower-like α-Fe2O3(F-Fe2O3) microspheres were synthesized by a facile chemical bath method and characterized by XRD, FE-SEM, TEM and BET specific surface area. The maximum sorption capacity of60Co(II) on F-Fe2O3reached to 6.78 × 10−4mol/g at 298 K and pH 6.5. The pH and ionic strength experiments implied that the removal of F-Fe2O3towards60Co(II) is dominated by ion exchange and/or outer-sphere surface complexation at pH < 7.5, and by inner-sphere surface complexation at pH > 7.5. In conclusion, the F-Fe2O3microspheres could be applied as cost-effective materials for the removal of60Co(II) from wastewater.