Magnetic mesoporous calcium carbonate-based nanocomposites for the removal of toxic Pb(II) and Cd(II) ions from water
Magnetic mesoporous calcium carbonate-based nanocomposites for the removal of toxic Pb(II) and Cd(II) ions from water
复制标题
磁性介孔碳酸钙基纳米复合材料用于去除水中有毒的 Pb(II) 和 Cd(II) 离子
DOI：
10.1021/acsanm.9b02036
复制
发表时间：
2020-01
影响因子：
5.9
通讯作者：
Yongjie Li
中科院分区：
文献类型：
--
作者：
Penglei Wang;Tingting Shen;Xinyong Li;Yuanyuan Tang;Yongjie Li
Calcium carbonate (CaCO3)-based nanoadsorbents have gained widespread attention due to their superiority in removing toxic heavy metal ions. Considering that the inherent structure of the material determines its performance, it is important to fully understand the effect of different crystals of CaCO3on the removal of heavy metals. On the other hand, the difficult separation of nanoadsorbents during in situ remediation may cause the potential risk of secondary pollution by the remaining adsorbents. Herein, the magnetic calcium carbonate adsorbents with nanostructure (MCCR-X,Xrepresent the annealing temperature) were fabricated with a tunable crystal structure of CaCO3by adjusting the annealing temperature. Results from batch experiments revealed the crystal structure (CaCO3)-dependent adsorption performance of MCCRs toward Pb(II) and Cd(II). MCCR-350 with an aragonite phase showed the outstanding adsorption toward both Pb(II) and Cd(II) with maximum adsorption capacity of 1179 and 821 mg/g, and MCCR-RAW with a vaterite/aragonite phase also has similar adsorption properties. However, MCCR-550 with the calcite phase displayed a superhigh adsorption toward Pb(II) only but very weak adsorption toward Cd(II) with a capacity of 1350 and 30 mg/g in the initial concentration of 300 mg/g. The findings indicated that the efficiently tunable removal of the heavy metal ion Pb(II) or Cd(II) by MCCRs can be realized by regulating the crystal phase of CaCO3. X-ray photoelectron spectroscopy technology (XPS) was employed to clarify the possible mechanism of the crystal phase of CaCO3-dependent adsorption ability for Pb(II)/Cd(II) removal by MCCRs. This work provides an understanding of the crystal-structure-related adsorption properties of CaCO3and also gives guidance for designing a CaCO3-based adsorbent for removal/recovery of heavy metal ions.
登录
查看更多内容
影响因子：
13.6
作者：
Huicai Wang;Zhenwen Wang;Ruirui Yue;Feng Gao;R. Ren;Junfu Wei;Xiao-lei Wang;Zhiyun Kong
通讯作者：
Huicai Wang;Zhenwen Wang;Ruirui Yue;Feng Gao;R. Ren;Junfu Wei;Xiao-lei Wang;Zhiyun Kong
影响因子：
11.4
作者：
Jinming Luo;Meng Sun;C. Ritt;Xia Liu;Yong Pei;J. Crittenden;M. Elimelech
通讯作者：
Jinming Luo;Meng Sun;C. Ritt;Xia Liu;Yong Pei;J. Crittenden;M. Elimelech
DOI：
10.1016/j.msec.2014.04.050
发表时间：
2014-12-01
影响因子：
7.9
作者：
Trushina, Daria B.;Bukreeva, Tatiana V.;Antipina, Maria N.
通讯作者：
Antipina, Maria N.
影响因子：
--
作者：
Changyan Cao;Ping-Xing Li;Jin Qu;Zhifeng Dou;Wen-sheng Yan;Junfa Zhu;Ziyu Wu;Weiguo Song
通讯作者：
Changyan Cao;Ping-Xing Li;Jin Qu;Zhifeng Dou;Wen-sheng Yan;Junfa Zhu;Ziyu Wu;Weiguo Song
影响因子：
11.4
作者：
Koehler, Stephan Jurgen;Cubillas, Pablo;Prieto, Manuel
通讯作者：
Prieto, Manuel