(1 Key Laboratory of Interface Science and Engineering in Advanced Materials,Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,China) (2 College of Chemistry and Chemical Engineering,Taiyuan University of Technology,Taiyuan 030024,China) (3 College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China)
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Abstract:
Carbon microspheres (CMSs) covered with chitosan (CS) was performed by electrostatic self assembly.CMSs,which were synthesized by chemical vapor deposition,were firstly oxidized by a mixture of concentrated HNO3 and H 2O 2,thus changing the surface activity of CMSs by electrostatic interaction between CMSs with negative charge and CS with positive charge.The morphologies and microstructures of the products were characterized by field emission scanning electron microscopy,Fourier transformation infrared spectrometry,X ray diffraction,and thermogravimetry.The results indicate that CS was self assembled on the surface of CMSs.When the mass ratio of CMSs to CS was 1∶2,the surface of CMSs was uniformly covered with CS and dispersion in water and ethanol was improved.