Organosilane-functionalized Fe3O4 composite particles as effective magnetic assisted adsorbents

Zhijian Wu; Jihuai Wu; Hong Xiang; Myung Suk Chun; Kangtaek Lee

doi:10.1016/j.colsurfa.2005.12.054

Organosilane-functionalized Fe₃O₄ composite particles as effective magnetic assisted adsorbents

Zhijian Wu, Jihuai Wu, Hong Xiang, Myung Suk Chun, Kangtaek Lee

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

45 Citations (Scopus)

Abstract

Organosilane-functionalized Fe₃O₄ composite particles are prepared by reacting organosilane precursor, bis[(3-trimethoxysilyl)propyl]-ethylenediamine (TSPED) on Fe₃O₄ magnetic particles. To examine the adsorption and desorption properties of the composites, brilliant blue FCF (BBF) is used as a model adsorbate. The effects of solution pH, ionic strength, temperature and initial BBF concentration on adsorption are investigated. The experimental results show that most of the dye is adsorbed and desorbed within 15 min. The equilibrium adsorption amount increases with the increase in initial BBF concentration, but decreases with the increase in ionic strength. The adsorption amount exhibits a maximum at the pH ∼6.5, and temperature does not have a significant effect on the adsorption below 50 °C. NaOH solution appears to be a more efficient desorption medium than NaCl solution. Hydrogen bonding, electrostatic and hydrophobic attractions are found to be the driving forces for the adsorption of BBF.

Original language	English
Pages (from-to)	167-174
Number of pages	8
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	279
Issue number	1-3
DOIs	https://doi.org/10.1016/j.colsurfa.2005.12.054
Publication status	Published - 2006 May 15

Bibliographical note

Funding Information:
This work was financially supported by the National Natural Science Foundation of China (No. 50372022) and by KOSEF through Basic Research Fund (R01-2004-000-10944-0) and National Core Research Center for Nanomedical Technology (R15-2004-024-00000-0).

All Science Journal Classification (ASJC) codes

Surfaces and Interfaces
Physical and Theoretical Chemistry
Colloid and Surface Chemistry

Access to Document

10.1016/j.colsurfa.2005.12.054

Cite this

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title = "Organosilane-functionalized Fe3O4 composite particles as effective magnetic assisted adsorbents",

abstract = "Organosilane-functionalized Fe3O4 composite particles are prepared by reacting organosilane precursor, bis[(3-trimethoxysilyl)propyl]-ethylenediamine (TSPED) on Fe3O4 magnetic particles. To examine the adsorption and desorption properties of the composites, brilliant blue FCF (BBF) is used as a model adsorbate. The effects of solution pH, ionic strength, temperature and initial BBF concentration on adsorption are investigated. The experimental results show that most of the dye is adsorbed and desorbed within 15 min. The equilibrium adsorption amount increases with the increase in initial BBF concentration, but decreases with the increase in ionic strength. The adsorption amount exhibits a maximum at the pH ∼6.5, and temperature does not have a significant effect on the adsorption below 50 °C. NaOH solution appears to be a more efficient desorption medium than NaCl solution. Hydrogen bonding, electrostatic and hydrophobic attractions are found to be the driving forces for the adsorption of BBF.",

author = "Zhijian Wu and Jihuai Wu and Hong Xiang and Chun, {Myung Suk} and Kangtaek Lee",

note = "Funding Information: This work was financially supported by the National Natural Science Foundation of China (No. 50372022) and by KOSEF through Basic Research Fund (R01-2004-000-10944-0) and National Core Research Center for Nanomedical Technology (R15-2004-024-00000-0).",

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AU - Wu, Zhijian

AU - Wu, Jihuai

AU - Xiang, Hong

AU - Chun, Myung Suk

AU - Lee, Kangtaek

N1 - Funding Information: This work was financially supported by the National Natural Science Foundation of China (No. 50372022) and by KOSEF through Basic Research Fund (R01-2004-000-10944-0) and National Core Research Center for Nanomedical Technology (R15-2004-024-00000-0).

PY - 2006/5/15

Y1 - 2006/5/15

N2 - Organosilane-functionalized Fe3O4 composite particles are prepared by reacting organosilane precursor, bis[(3-trimethoxysilyl)propyl]-ethylenediamine (TSPED) on Fe3O4 magnetic particles. To examine the adsorption and desorption properties of the composites, brilliant blue FCF (BBF) is used as a model adsorbate. The effects of solution pH, ionic strength, temperature and initial BBF concentration on adsorption are investigated. The experimental results show that most of the dye is adsorbed and desorbed within 15 min. The equilibrium adsorption amount increases with the increase in initial BBF concentration, but decreases with the increase in ionic strength. The adsorption amount exhibits a maximum at the pH ∼6.5, and temperature does not have a significant effect on the adsorption below 50 °C. NaOH solution appears to be a more efficient desorption medium than NaCl solution. Hydrogen bonding, electrostatic and hydrophobic attractions are found to be the driving forces for the adsorption of BBF.

AB - Organosilane-functionalized Fe3O4 composite particles are prepared by reacting organosilane precursor, bis[(3-trimethoxysilyl)propyl]-ethylenediamine (TSPED) on Fe3O4 magnetic particles. To examine the adsorption and desorption properties of the composites, brilliant blue FCF (BBF) is used as a model adsorbate. The effects of solution pH, ionic strength, temperature and initial BBF concentration on adsorption are investigated. The experimental results show that most of the dye is adsorbed and desorbed within 15 min. The equilibrium adsorption amount increases with the increase in initial BBF concentration, but decreases with the increase in ionic strength. The adsorption amount exhibits a maximum at the pH ∼6.5, and temperature does not have a significant effect on the adsorption below 50 °C. NaOH solution appears to be a more efficient desorption medium than NaCl solution. Hydrogen bonding, electrostatic and hydrophobic attractions are found to be the driving forces for the adsorption of BBF.

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