XPS study of amorphous zirconium oxide films prepared by sol–gel

Brenier, R.; Mugnier, J.; Mirica, Eugenia

doi:10.1016/s0169-4332(98)00901-5

Cited by 102 publications

(56 citation statements)

References 20 publications

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“…3 is X-ray photoelectron spectra of the ZrO 2 nanoparticles capped by TOPO. As can be seen, the binding energy peaks of both Zr3d 5/2 (3a) and O1s are 182.2 eV and 530.3 eV, respectively, which are consistent with those of tetragonal ZrO 2 [14,15] . The P2p 3/2 in the ZrO 2 nanoparticles (3c) has the same characteristic peak of 132.4 eV as P2p 3/2 in TOPO [16].…”

Section: Xps Analysissupporting

confidence: 71%

Preparation and characterization of ZrO2 nanoparticles capped by trioctylphosphine oxide (TOPO)

2011

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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Monodisperse ZrO 2 nanoparticles capped by trioctylphosphine oxide (TOPO) were prepared in non-aqueous solvent using in-situ synthesis method. Transmission electron microscopy(TEM), X-ray diffraction(XRD), X-ray photoelectron spectrometer(XPS), Fourier transformation infrared spectroscopy (FTIR), and thermogravimetric analysis(TGA) were adopted to characterize and investigate the size, structure, composition, and the binding manners between organic capping agent TOPO and inorganic ZrO 2 nanocores of the as-prepared nanoparticles. In addition, the nanoparticles were also studied to determine their solubility and relative stability. The experimental results show that the prepared nanoparticles contain about 25% organic capping shell TOPO, 75% inorganic ZrO 2 nanocores, and can be easily dissolved and be stably disersed in nonpolar organic solvents.

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Section: Xps Analysissupporting

confidence: 71%

Preparation and characterization of ZrO2 nanoparticles capped by trioctylphosphine oxide (TOPO)

2011

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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“…Average inter-particle distance (AID) with standard deviation (SD AID ) from Eq. [40,41,[44][45][46][47] are depicted by the shaded green and yellow bands, respectively…”

Section: Discussionmentioning

confidence: 99%

Synthesis optimization of carbon-supported ZrO2 nanoparticles from different organometallic precursors

et al. 2017

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We report here the synthesis of carbon-supported ZrO 2 nanoparticles from zirconium oxyphthalocyanine (ZrOPc) and acetylacetonate [Zr(acac) 4 ]. Using thermogravimetric analysis (TGA) coupled with mass spectrometry (MS), we could investigate the thermal decomposition behavior of the chosen precursors. According to those results, we chose the heat treatment temperatures (T HT ) using partial oxidizing (PO) and reducing (RED) atmosphere. By X-ray diffraction we detected structure and size of the nanoparticles; the size was further confirmed by transmission electron microscopy. ZrO 2 formation happens at lower temperature with Zr(acac) 4 than with ZrOPc, due to the lower thermal stability and a higher oxygen amount in Zr(acac) 4 . Using ZrOPc at T HT C900°C, PO conditions facilitate the crystallite growth and formation of distinct tetragonal ZrO 2 , while with Zr(acac) 4 a distinct tetragonal ZrO 2 phase is observed already at T HT C750°C in both RED and PO conditions. Tuning of ZrO 2 nanocrystallite size from 5 to 9 nm by varying the precursor loading is also demonstrated. The chemical state of zirconium was analyzed by X-ray photoelectron spectroscopy, which confirms ZrO 2 formation from different synthesis routes.

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“…It can be seen that the peak of Zr 3d (Fig. 10a) appears at 368.3 eV, which is assigned to ZrO 2 [21,22]. This indicates that ZrO 2 nanoparticles did not have tribochemical reaction with the rubbing surfaces and were deposited on the surfaces to form a ceramic-like boundary film.…”

Section: Wear Scar Surface Analysismentioning

confidence: 97%

Effect of ZrO2 Nanoparticles Additive on the Tribological Behavior of Multialkylated Cyclopentanes

Bai

2009

Tribol Lett

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Monodisperse ZrO 2 nanoparticles with a particle size of about 6-7 nm and low volatile multialkylated cyclopentanes (MACs) lubricant were prepared and characterized. The effect of ZrO 2 nanoparticles as additive on the friction and wear behavior of MACs base oil was investigated. The friction and wear performance of 2 wt% ZrO 2 nanoparticles ? MACs was evaluated using an Optimal SRV oscillating friction and wear tester, with a steel ball sliding against the same steel counterpart disc. Results indicate that the wear resistance and load-carrying capacity of MACs base oil were markedly raised and its friction coefficient changed little when 2 wt% ZrO 2 nanoparticles were added to it.

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XPS study of amorphous zirconium oxide films prepared by sol–gel

Cited by 102 publications

References 20 publications

Preparation and characterization of ZrO2 nanoparticles capped by trioctylphosphine oxide (TOPO)

Preparation and characterization of ZrO2 nanoparticles capped by trioctylphosphine oxide (TOPO)

Synthesis optimization of carbon-supported ZrO2 nanoparticles from different organometallic precursors

Effect of ZrO2 Nanoparticles Additive on the Tribological Behavior of Multialkylated Cyclopentanes

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