Article ID Journal Published Year Pages File Type
1254247 Chinese Chemical Letters 2014 5 Pages PDF
Abstract

Amorphous carbon nanoparticles (a-CNPs) on a multi-walled carbon nanotube (MWCNT) film, deposited on a silicon substrate, were synthesized using an electrodeposition combination from a methanol suspension of polydiallyldimethylammonium chloride-modified MWCNTs. A low-voltage electrophoretic deposition of the MWCNTs and a high-voltage electrochemical deposition of the a-CNPs were carried out to yield homogenously attached a-CNPs on the surfaces of the MWCNTs, and form a composite film with good adhesion to the substrate. This scalable technology can produce a large area of a-CNP/MWCNT film. And the field emission investigations show that the a-CNP/MWCNT film has turn-on electric field of 3.17 V μm−1 (at 10 μA cm−2) and threshold field of 4.62 V μm−1 (at 1 mA cm−2), which are lower than those of the MWCNT film. The a-CNP/MWCNT film can be deposited simply with large areas and may be a promising cathode material applied in field emission displays.

Graphical abstractAmorphous carbon nanoparticles (a-CNPs) on a multi-walled carbon nanotube (MWCNT) film, were synthesized using an electrodeposition combination from a methanol suspension of polydiallyldimethylammonium chloride-modified MWCNTs with the result that the field emission properties of the a-CNP/MWCNT composite film were better than MWCNT film.Figure optionsDownload full-size imageDownload as PowerPoint slide

Related Topics
Physical Sciences and Engineering Chemistry Chemistry (General)
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