Removal of hexavalent chromium ion from aqueous solution using nanoscale zero-valent iron particles immobilized on porous silica support prepared by polymer template method

Minchae Jang; Boyeong Park; Hyunseung Lee; Tae-Yong Kim; Yangsoo Kim

Korean Journal of Chemical Engineering, Vol.35, No.10, 2015-2023, October, 2018

DOI10.1007/s11814-018-0113-x Export Citation

Removal of hexavalent chromium ion from aqueous solution using nanoscale zero-valent iron particles immobilized on porous silica support prepared by polymer template method

Minchae Jang¹, Boyeong Park¹, Hyunseung Lee¹, Tae-Yong Kim¹, and Yangsoo Kim^{1, 2, †}

¹Department of Nanoscience & Engineering, Inje University, Gimhae 50834, Korea
²High Safety Vehicle Core Technology Research Center, Inje University, Gimhae 50834, Korea

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Porous silica supported nanoscale zero-valent iron was prepared by a polymer template method in order to effectively remove a hexavalent chromium ion (Cr(VI)) in an aqueous solution. It did not show a deterioration of Cr(VI) removal efficiency, which could be caused by the surface oxidation and agglomeration of nanoscale zero-valent iron (NZVI) particles. Porous silica by the polymer template method showed quite unique structure, which we named as quasi-inverse opal silica (QIOS), and it showed high surface area (375.4m2/g) and fine pore size (76.5 nm). NZVI immobilized on the surface of QIOS (NZVI@QIOS) was added to an aqueous Cr(VI) solution at 0.025 g/L, and it showed over 96% Cr(VI) removal efficiency. Such a high removal efficiency of Cr(VI) was maintained over two weeks after preparation (92% after 16 days). Morphology of porous silica supported nanoscale zero-valent iron was analyzed by TEM and FE-SEM. Identification of the reaction compounds produced by the reaction of Cr(VI) and zero-valent iron (Fe(0)) was made by the application of XPS.

Keywords:Diphenylcarbazide Method;Hexavalent Chromium;Nanoscale Zero-valent Iron;Polymer Template;Porous Silica

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[2] Rashmi SH, Madhu GM, Kittur AA, Suresh R, Int. J. Curr. Eng. Technol., 1, 37 (2013)

[3] Petala E, Dimos K, Douvalis A, Bakas T, Tucek J, Zboril R, Karakassides MA, J. Hazard. Mater., 261, 295 (2013)

[4] Sun X, Yu H, Zheng D, Wang X, Li J, Wang L, Appl. Surf. Sci., 279, 1 (2013)

[5] Li Y, Ma H, Ren B, Li T, J. Anal. Methods Chem., 2013, 649503 (2013)

[6] Li YC, Jin ZH, Li TL, Desalination, 288, 118 (2012)

[7] Li Y, Jin Z, Li T, Xiu Z, Sci. Total Environ., 421-422, 260 (2012)

[8] Li Y, Jin Z, Li T, Li S, Water Sci. Technol., 63, 2781 (2011)

[9] Li Y, Li T, Jin Z, J. Environ. Sci., 23, 1211 (2011)

[10] Oh YJ, Song H, Shin WS, Choi SJ, Kim Y, Chemosphere, 66, 858 (2007)

[11] Choi KY, Luciani CV, Emdadi L, Lee SY, Baick IH, Lim JS, Macromol. Mater. Eng., 297, 1021 (2012)

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[19] Li XQ, Cao JS, Zhang WX, Ind. Eng. Chem. Res., 47(7), 2131 (2008)

[20] Hou MF, Wan HF, Liu TL, Fan YN, Liu XM, Wang XG, Appl. Catal. B: Environ., 84(1-2), 170 (2008)