Journal
CHEMISTRY OF MATERIALS
Volume 20, Issue 21, Pages 6617-6622Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm800551h
Keywords
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Funding
- National Science Council of the Republic of China [NSC95-2113-M-007-032-MY, NSC95-2911-I-007-030]
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Magnetically separable Fe2O3@SBA-15 nanocomposite with fully open mesochannels and bifunctional surface properties was prepared by selective deposition of iron oxide nanoparticles in the micropores of mesoporous SBA-15 silica with hydrophobic mesopore surface. The iron oxide nanoparticles embedded in the micropores were estimated to be composed of 67% alpha-Fe2O3 and 33% gamma-Fe2O3, and the nanocomposite was found to exhibit superparamagnetic properties. With the bifunctional surface properties, the Fe2O3@SBA-15 nanocomposite showed enhanced adsorption capacity for cytochrome c and a maximum saturated uptake at neutral solution pH.
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