期刊
POWDER TECHNOLOGY
卷 323, 期 -, 页码 548-557出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.powtec.2016.09.014
关键词
Mesoporous silica; Nanospheres; Biphasic; Adsorption; Amine-functionalization
资金
- National Research University Project of Thailand, Office of the Higher Education Commission through Advanced Functional Materials Cluster of Khon Kaen University [NRU57023]
- Thailand Research Fund under TRF [RSA5980075]
- National Research Council of Thailand (NRCT) [2558-D51]
- Center of Alternative Energy Research and Development, Khon Kaen University (AERD-KKU) [D01/56]
- Graduate School of Khon Kaen University [57242101]
- Education Research Promotion
Amine-functionalized mesoporous silica nanoparticles (MSN-NH2) were synthesized under cyclohexane-water biphasic system using I-arginine as the weak base catalyst and CTAB as the template. The synthesized MSNNH2 particles were highly monodispersed nanospheres with a particle diameter lower than 50 nm and a pore size approximately 2-4 nm. MSN-NH2 particles were utilized as the adsorbent for a removal of Cu2+ and Fe2+ ions from aqueous solutions. MSN-NH2 possessed higher adsorption efficiency towards Cu2+ than Fee ions with the removal efficiency of Cu2+ as high as 99%. Adsorption isotherm showed that Langmuir model was suitably described the adsorption behaviors of Cu2+ and Fe2+ on MSN-NH2. Thermodynamic study indicated that the adsorptions of Cu2+ and Fe2+ on MSN-NH2 were spontaneous process and were primarily governed by a physical adsorption. (C) 2016 Elsevier B.V. All rights reserved.
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