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文獻(xiàn)名： Development of a dispersion process for carbon nanotubes in ceramic matrix by heterocoagulation
作者： Jing Sun, Lian Gao
The State Key Laboratory on High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Ding Xi Road, Shanghai 200050, PR China
摘要： The surface properties of carbon nanotubes have been changed by heat treatment with ammonia to yield a basic surface or with N2 to yield an acidic surface without destroying the integrity of the nanotubes. The dispersion state of CNTs could be much improved by the adsorption of a cationic dispersant of poly(ethylenimine) (PEI) or an ionic dispersant of sodium dodecyl sulfate (SDS). Through the electrostatic interaction between components, CNTs could be successfully coated with particles of titania or alumina by colloidal heterocoagulation. A titania coating on 1.5wt% CNTs, shows the same photocatalytic properties in phenol degradation and has advantages in separation and reuse.
關(guān)鍵詞： A. Carbon nanotubes; B. Heat treatment; D. Reactivity
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