Gold, copper and gold/copper bimetallic nanoparticles obtained by focused ion beam sputter deposition and rapid thermal annealing

Perez‐Landeros, Oscar; Nedev, N.; Curiel, Mario; Salas, Benjamín Valdéz; Barajas, Alejandro; Mateos, David; Nedev, Roumen; Arias, Abraham

doi:10.1016/j.vacuum.2018.08.033

Cited by 11 publications

(2 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Ag3d 5/2 lines were tted with two components of binding energies 367.8 (silver in Ag x O) and 368.3 eV (metallic silver) [21]. The Cu2p 3/2 lines were tted with four components of binding energies 932.5, 932.7, 933.7, and 934.8 eV, which were corresponding to the copper atoms in Cu 2 O, Cu, CuO, and Cu-OH or Cu(OH) 2 [22], respectively.…”

Section: Xpsmentioning

confidence: 99%

The Effects of Native Oxides on the Selective Photo-Reduction Property of Cu Nanoparticles Induced by the Localized Surface Plasmon

Fang

et al. 2022

Plasmonics

View full text Add to dashboard Cite

Copper nanoparticles (CuNPs) in air are easily oxidized into CuNPs@Cu 2 O core-shell structure. The localized surface plasmon resonance (LSPR) of CuNPs can be damped seriously by the Cu 2 O shell. The effect of this native Cu 2 O layer on the LSPR-induced selective photocatalysis properties of CuNPs is often ignored. In this paper, this effect was explored by comparison of the evolution of the photo-reduction e ciency (PRE) with the nanoparticle size (d) of the as-deposited CuNPs to that of AgNPs via monitoring the transformation from 4-Nitrothiophenol (PNTP) to 4,4 trdimercaptoazobenzene (DMAB) using surface enhanced Raman scattering. It was found that the PRE of the as-deposited CuNPs increases rst and then decreases with increasing d, much different from that of AgNPs: increases with increasing d. Based on the transmission electron microscope images, and X-ray photoelectron spectroscopy, and by monitoring the PRE stability in air of the as-deposited CuNPs, the mechanisms of the PRE evolution with d and the laser illumination time (t) were suggested. Cu 2 O plays a dominated role when the nanoparticles' sizes were small. Both Cu 2 O and CuNPs play roles when the nanoparticles' sizes were large, which brought in the low PRE of the as-deposited CuNPs.

show abstract

Section: Xpsmentioning

confidence: 99%

The Effects of Native Oxides on the Selective Photo-Reduction Property of Cu Nanoparticles Induced by the Localized Surface Plasmon

Fang

et al. 2022

Plasmonics

View full text Add to dashboard Cite

show abstract

“…It was reported that CuNPs surrounded by dielectric were fabricated by implanting Cu + ions into phosphate glass, polymers and Al 2 O 3 et al and followed by annealing, but the LSPR stabilities of CuNPs were not discussed [9,10]. CuNPs can also be deposited via vacuum coating, where Cu atoms were vaporized in a vacuum chamber, deposited on substrates, and finally agglomerated into CuNPs [11,12]. During deposition, no solution was applied, therefore clean CuNPs could be obtained, and the oxidation of CuNPs was weak [13].…”

Section: Introductionmentioning

confidence: 99%

Maintaining the localized surface plasmon resonance of copper nanoparticles by defective TiO2 thin films

et al. 2021

View full text Add to dashboard Cite

The localized surface plasmon resonance (LSPR) of copper nanoparticles (CuNPs) damps quickly in air due to the easy oxidation of copper atoms. Finding ways to retard the oxidation of CuNPs is critical for the applications based on the LSPR of CuNPs. In this paper, we report on a new method to maintaining the LSPR of CuNPs by deposition of CuNPs on TiO 2 thin films in vacuum followed by annealing in nitrogen ambient. The anti-oxidation properties of the CuNPs were improved greatly. In three days, the LSPR intensities at 532 and 633 nm were reduced by only 40 and 32%, respectively. This method is simple and cost-effective.

show abstract

Metal- and metal/oxide-based engineered nanoparticles and nanostructures: a review on the applications, nanotoxicological effects, and risk control strategies

Solano

Patiño-Ruiz

Benítez

et al. 2021

Environ Sci Pollut Res

View full text Add to dashboard Cite

Gold, copper and gold/copper bimetallic nanoparticles obtained by focused ion beam sputter deposition and rapid thermal annealing

Cited by 11 publications

References 29 publications

The Effects of Native Oxides on the Selective Photo-Reduction Property of Cu Nanoparticles Induced by the Localized Surface Plasmon

The Effects of Native Oxides on the Selective Photo-Reduction Property of Cu Nanoparticles Induced by the Localized Surface Plasmon

Maintaining the localized surface plasmon resonance of copper nanoparticles by defective TiO2 thin films

Metal- and metal/oxide-based engineered nanoparticles and nanostructures: a review on the applications, nanotoxicological effects, and risk control strategies

Contact Info

Product

Resources

About