Improved field emission properties of double-walled carbon nanotubes decorated with Ru nanoparticles

Probing the Electronic Effect of Carbon Nanotubes in Catalysis: NH3 Synthesis with Ru Nanoparticles

“…[30] Upon decoration of Ru nanoparticles, the work function of the composite was lowered due to electron transfer from Ru to the CNT. [31] Most likely, the outside Ru transfers fewer electrons due to repulsion of electrons since the exterior CNT surface has already a higher electron density. In comparison, it could be easier for the inside Ru to donate more electrons since it is located on the relatively electron-deficient interior CNT surface.…”

Field emission from single-, double-, and multi-walled carbon nanotubes chemically attached to silicon

“…The field emission of the DWCNT surface presented here compares favorably with other work where values for E to of 1-3 V lm À1 and 1000-5000 for b are common. [37][38][39] MWCNTs are by far the most extensively studied of the CNT types due to their ease of fabrication. However, the MWCNT diameter can vary significantly and as a result a very broad range of FE characteristics are present in the literature.…”

“…42,43 Field emission from the samples could be improved by decoration of the sidewalls with nanoparticles, which has previously been shown to improve the FE of DWCNTs. 38 The carboxylic acid groups on the sidewalls of the CNTs could be used to chemically attach nanoparticles to the sidewalls. The FE properties could also potentially be improved by the removal of the functional groups by heating the sample over 500…”

Iron Encapsulated within Pod‐like Carbon Nanotubes for Oxygen Reduction Reaction

“…[22,23] Thus, we expect that the PEEM, a tool highly sensitive to the change of local work function, could provide a direct confirmation of the work function change discussed above. The PEEM image in Figure 4 a shows a significantly bright contrast at one spot along with the tube.…”