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Scanning Raman spectroscopy was employed to statistically examine the effects of nitric acid treatments on the defects and their distribution on the surface of multi-walled carbon nanotubes (MWCNTs). After acid treatments, the amount of structural defects significantly increased and the homogeneity became worse. However, after a 384-h base wash the amount of structural defects remarkably decreased...
Ethanol has etching effect on the side wall of multiwalled carbon nanotubes (MWCNTs). Under proper treating temperature and employing ultrasonic treatment, graphene fractions might form and suspend in acetonitrile due to the ethanol induced breaking down of the ektexine of the MWCNTs. High resolution images by transmission electron microscopy validated these processes. Furthermore, due to the requirements...
A series of activated carbon (AC) supported nickel oxide (NiO) catalysts were prepared by aqueous reduction preparation methods with nickel nitrate as a precursor. The effects of preparation procedure and reducing agent on catalyst structure and catalytic property were investigated. Based on the information obtained from physico-chemical characterizations and sorbitol dehydration performances, preparation...
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