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A Simple Gas-Solid Route To Functionalize Ordered Carbon
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DOI：10.1021/am405484g.png)
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摘要
En 中文
The reaction of nitric oxide (NO) and carbonaceous materials generates nitrogen functionalities on and in graphitic carbons and oxidizes some of the carbon. Here, have exploited these phenomena to provide a novel route to surface-functionalized multiwalled carbon nanotubes (MWCNTs). We investigated the impacts of NO on the physical and chemical properties of industrially synthesized multiwalled carbon nanotubes to find a facile treatment that increased the specific surface area (S-BET) of the MWCNTs by similar to 20%, with only a minimal effect on their degree of graphitization. The technique caused less material loss (similar to 12 wt %) than traditional gas-based activation techniques, and grafted some nitrogen functional groups (1.1 at. %) on the MWCNTs. Moreover, we found that Ni nanoparticles deposited on NO-treated MWCNTs had a crystallite size of d(Ni) = 13.1 nm, similar to those deposited on acid-treated MWCNTs (d(Ni) = 14.2 nm), and clearly much smaller than those deposited under the same conditions on untreated MWCNTs (d(Ni) = 18.3 nm).
Keyword:
NO oxidation
gas functionalization
CNT oxidation
MWCNTs
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IF:
8.2
论文数:
6.1W
被引数:
38.7W
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