期刊
JOURNAL OF SOLID STATE CHEMISTRY
卷 211, 期 -, 页码 191-199出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2013.12.028
关键词
SBA-15; 1,4,7-triazacyclononane; Selective copper adsorption; Adsorbent; Regeneration
资金
- National Research Foundation of Korea (NRF)
- Ministry of Science, ICT, Future planning, Korea (Acceleration Research Program) [2009-0078791]
- Pioneer Research Center Program [2010-0019308/2010-0019482]
- BK 21 Plus Program [21A2013800002]
A new SBA-15 supported 1,4,7-triazacyclononane modified mesoporous silica adsorbent (SBA-TACN) has been synthesized using post grafting route and has thoroughly been characterized by small angle X-ray scattering (SAXS), N-2 adsorption-desorption measurements, Fourier-transform infrared (FT-IR), solid-state Si-29 MAS and C-13 CP MAS NMR spectroscopy, transmission electron (TEM) and scanning electron microscopy (SEM), elemental analysis (EA) and thermogravimetric analysis (TGA). The synthesized material shows excellent copper (II) ion adsorption selectivity at pH 5 in mixed metal ion solution containing Cu2+, Cr2+, Ni2+, Co2+ and Li+. The copper ion adsorption capacity of the SBA-TACN can reach a maximum value of 0.67 mmol/g. Possible adsorption mechanism of metal ions on SBA-TACN has been discussed. The adsorbent can be readily regenerated by HNO3-NH3 treatment. (C) 2014 Elsevier Inc. All rights reserved.
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