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Akaganeite/Silica Yolk-Shell Structures for Removal of Cr(VI)
Corresponding Author(s) : Weiwei Wang
Asian Journal of Chemistry,
Vol. 26 No. 21 (2014): Vol 26 Issue 21
Abstract
Akaganeite (b-FeOOH) with a tunnel structure represents inexpensive and abundant materials for removal of heavy metal ions. To improve its adsorption property, silica layer was coated on the surface of b-FeOOH, which was dissolved by reacting with NaBH4 and re-grew to form silica porous layer and interior voids. b-FeOOH/silica yolk-shell structures were obtained. The effects of silica layer thicknesses and reaction time on the formation of yolk-shell structures were investigated. b-FeOOH/silica yolk-shell structures were used as adsorbent for removal of heavy metal ions present in water and showed a strong Cr(VI) ions removal capacity. The existence of a large number of pores and interior voids in yolk-shell structures was important for the improvement of adsorption ability.
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- J.W. Liu, J. Cheng, R. Che, J. Xu, M. Liu and Z. Liu, J. Phys. Chem. C, 117, 489 (2013); doi:10.1021/jp310898z.
- Y. Zhu, Y. Fang and S. Kaskel, J. Phys. Chem. C, 114, 16382 (2010); doi:10.1021/jp106685q.
- Y. Chen, H. Chen, L. Guo, Q. He, F. Chen, J. Zhou, J. Feng and J. Shi, ACS Nano, 4, 529 (2010); doi:10.1021/nn901398j.
- J. Gao, G. Liang, B. Zhang, Y. Kuang, X. Zhang and B. Xu, J. Am. Chem. Soc., 129, 1428 (2007); doi:10.1021/ja067785e.
- S. Linley, T. Leshuk and F.X. Gu, ACS Appl. Mater. Interfaces, 5, 2540 (2013); doi:10.1021/am303117g.
- H. Li, Z. Bian, J. Zhu, D. Zhang, G. Li, Y. Huo, H. Li and Y. Lu, J. Am. Chem. Soc., 129, 8406 (2007); doi:10.1021/ja072191c.
- X. Du and J. He, ACS Appl. Mater. Interfaces, 3, 1269 (2011); doi:10.1021/am200079w.
- T. Zhang, Q. Zhang, J. Ge, J. Goebl, M. Sun, Y. Yan, Y. Liu, C. Chang, J. Guo and Y. Yin, J. Phys. Chem. C, 113, 3168 (2009); doi:10.1021/jp810360a.
- H.F. Shao, X.F. Qian, J. Yin and Z. Zhu, J. Solid State Chem., 178, 3130 (2005); doi:10.1016/j.jssc.2005.07.011.
- D. Li, W.Y. Teoh, R.C. Woodward, J.D. Cashion, C. Selomulya and R. Amal, J. Phys. Chem. C, 113, 12040 (2009); doi:10.1021/jp902684g.
- G. Cheng, J. Xiong, H. Yang, Z. Lu and R. Chen, Mater. Lett., 77, 25 (2012); doi:10.1016/j.matlet.2012.02.127.
- Z. Wu, S. Li, J. Wan and Y. Wang, J. Mol. Liq., 170, 25 (2012); doi:10.1016/j.molliq.2012.03.016.
References
J.W. Liu, J. Cheng, R. Che, J. Xu, M. Liu and Z. Liu, J. Phys. Chem. C, 117, 489 (2013); doi:10.1021/jp310898z.
Y. Zhu, Y. Fang and S. Kaskel, J. Phys. Chem. C, 114, 16382 (2010); doi:10.1021/jp106685q.
Y. Chen, H. Chen, L. Guo, Q. He, F. Chen, J. Zhou, J. Feng and J. Shi, ACS Nano, 4, 529 (2010); doi:10.1021/nn901398j.
J. Gao, G. Liang, B. Zhang, Y. Kuang, X. Zhang and B. Xu, J. Am. Chem. Soc., 129, 1428 (2007); doi:10.1021/ja067785e.
S. Linley, T. Leshuk and F.X. Gu, ACS Appl. Mater. Interfaces, 5, 2540 (2013); doi:10.1021/am303117g.
H. Li, Z. Bian, J. Zhu, D. Zhang, G. Li, Y. Huo, H. Li and Y. Lu, J. Am. Chem. Soc., 129, 8406 (2007); doi:10.1021/ja072191c.
X. Du and J. He, ACS Appl. Mater. Interfaces, 3, 1269 (2011); doi:10.1021/am200079w.
T. Zhang, Q. Zhang, J. Ge, J. Goebl, M. Sun, Y. Yan, Y. Liu, C. Chang, J. Guo and Y. Yin, J. Phys. Chem. C, 113, 3168 (2009); doi:10.1021/jp810360a.
H.F. Shao, X.F. Qian, J. Yin and Z. Zhu, J. Solid State Chem., 178, 3130 (2005); doi:10.1016/j.jssc.2005.07.011.
D. Li, W.Y. Teoh, R.C. Woodward, J.D. Cashion, C. Selomulya and R. Amal, J. Phys. Chem. C, 113, 12040 (2009); doi:10.1021/jp902684g.
G. Cheng, J. Xiong, H. Yang, Z. Lu and R. Chen, Mater. Lett., 77, 25 (2012); doi:10.1016/j.matlet.2012.02.127.
Z. Wu, S. Li, J. Wan and Y. Wang, J. Mol. Liq., 170, 25 (2012); doi:10.1016/j.molliq.2012.03.016.