Oxidation behaviour of copper nanofractals produced by soft-landing of size-selected nanoclusters

Abstract

We report the oxidation dynamics of a copper nanocluster assembled film, containing fractal islands, fabricated by the soft-landing of size-selected copper nanoclusters with an average diameter of 3 nm.

Three-Dimensional Integration of CuO-Si Hierarchical Nanowires for Electrochemical Detection of N2H4

“…In our case, the binding energy positions of the Cu 2p 3/2 and Cu 2p 1/2 were 933.75 and 953.75 eV, respectively, with a peak energy separation of 20 eV, 58 which has been well-documented for CuO in the literature. To quantify and identify the chemical state of Cu in CuO-Si HNWs, the Cu 2p 3/2 peak was deconvoluted and was found to consist of two peaks at 932 and 933.40 eV, suggesting the presence of Cu 1+ and Cu 2+ , respectively, with a respective ratio of 30:70%, as shown in 53,54 in the nanomaterial will be very useful for the adsorption and diffusion of different dissociated redox species of N 2 H 4 .…”

“…Furthermore, for these states, the nature of the satellite peaks also plays a pivotal role in identifying the chemical state. In our case, the binding energy positions of the Cu 2p 3/2 and Cu 2p 1/2 were 933.75 and 953.75 eV, respectively, with a peak energy separation of 20 eV, which has been well-documented for CuO in the literature. To quantify and identify the chemical state of Cu in CuO-Si HNWs, the Cu 2p 3/2 peak was deconvoluted and was found to consist of two peaks at 932 and 933.40 eV, suggesting the presence of Cu 1+ and Cu 2+ , respectively, with a respective ratio of 30:70%, as shown in Figure b.…”

Mechanism of Stoichiometrically Governed Titanium Oxide Brownian Tree Formation on Stepped Au(111)

“…11 The DLA mechanism for the formation of fractallike structures on surfaces requires high mobility of the particles during deposition and irreversible binding following particle encounters, i.e., a "hit-and-stick" model. 10,[12][13][14][15] Here DLA is driving morphological changes of catalytically relevant interfaces, but similar structures have been reported for a wide range of supported clusters including AlF3 on Cu, 16,17 LiF on Ag, 18,19 MoS2 on SrTiO3(001), 20 CeO2 on graphene/Ru(0001), 21 C60 on graphite, 22 and Cu 23 and W 24 clusters on graphite.…”

Mechanism of Stoichiometrically Governed Titanium Oxide Brownian Tree Formation on Stepped Au(111)

“…These clusters are referred to as Brownian trees and take a fractal-like form . The DLA mechanism for the formation of fractal-like structures on surfaces requires a high mobility of the particles during deposition and irreversible binding following particle encounters, i.e., a “hit-and-stick” model. ,− Here, DLA is driving morphological changes of catalytically relevant interfaces, but similar structures have been reported for a wide range of supported clusters including AlF 3 on Cu, , LiF on Ag, , MoS 2 on SrTiO 3 (001), CeO 2 on graphene/Ru(0001), C 60 on graphite, and Cu and W clusters on graphite.…”