A different approach in sample preparation method for metallic contamination study by ToF-SIMS and TXRF

Ferlito, E. P.; Alnabulsi, S; Mello, Domenico

doi:10.1016/j.apsusc.2011.06.109

Cited by 5 publications

(2 citation statements)

References 8 publications

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“…Figure A–C notably show the absence of the Rh 2 O + fragment, while the presence of monatomic Rh + species is seen. This allows us to conclude that the concentration of metal particles, if any, in Rh/Fe 3 O 4 -0.05 is below the detection limit (5 × 10 6 to 5 × 10 8 atoms/cm 2 ; Supporting Information for experimental details). , …”

Section: Results and Discussionmentioning

confidence: 92%

“…This allows us to conclude that the concentration of metal particles, if any, in Rh/Fe 3 O 4 -0.05 is below the detection limit (5 × 10 6 to 5 × 10 8 atoms/ cm 2 ; Supporting Information for experimental details). 30,31 The intensity of the white line in the XANES results showed that the environment of Rh in Rh/Fe 3 O 4 -0.05 resembles that of the oxide reference and differs from the metallic state of Rh in the foil (Figure 1D). Independently, the isolated Rh atoms were imaged by HAADF-STEM as shown in Figure 1E.…”

Section: ■ Results and Discussionmentioning

confidence: 96%

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Environment of Metal–O–Fe Bonds Enabling High Activity in CO₂ Reduction on Single Metal Atoms and on Supported Nanoparticles

et al. 2021

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Single-atom catalysts are often reported to have catalytic properties that surpass those of nanoparticles, while a direct comparison of sites common and different for both is lacking. Here we show that single atoms of Pt-group metals embedded into the surface of Fe 3 O 4 have a greatly enhanced interaction strength with CO 2 compared with the Fe 3 O 4 surface. The strong CO 2 adsorption on single Rh atoms and corresponding low activation energies lead to 2 orders of magnitude higher conversion rates of CO 2 compared to Rh nanoparticles. This high activity of single atoms stems from the partially oxidic state imposed by their coordination to the support. Fe 3 O 4 -supported Rh nanoparticles follow the behavior of single atoms for CO 2 interaction and reduction, which is attributed to the dominating role of partially oxidic sites at the Fe 3 O 4 − Rh interface. Thus, we show a likely common catalytic chemistry for two kinds of materials thought to be different, and we show that single atoms of Pt-group metals on Fe 3 O 4 are especially successful materials for catalyzed reactions that depend primarily upon sites with the metal−O−Fe environment.

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Section: Results and Discussionmentioning

confidence: 92%

Section: ■ Results and Discussionmentioning

confidence: 96%

Environment of Metal–O–Fe Bonds Enabling High Activity in CO₂ Reduction on Single Metal Atoms and on Supported Nanoparticles

et al. 2021

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Portable total reflection x-ray fluorescence analysis in the identification of unknown laboratory hazards

Liu

Imashuku

Sasaki

et al. 2014

Journal of Vacuum Science &Amp; Technology A: Vacuum, Surfaces, and Films

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In this study, a portable total reflection x-ray fluorescence (TXRF) spectrometer was used to analyze unknown laboratory hazards that precipitated on exterior surfaces of cooling pipes and fume hood pipes in chemical laboratories. With the aim to examine the accuracy of TXRF analysis for the determination of elemental composition, analytical results were compared with those of wavelength-dispersive x-ray fluorescence spectrometry, scanning electron microscope and energy-dispersive x-ray spectrometry, energy-dispersive x-ray fluorescence spectrometry, inductively coupled plasma atomic emission spectrometry, x-ray diffraction spectrometry (XRD), and x-ray photoelectron spectroscopy (XPS). Detailed comparison of data confirmed that the TXRF method itself was not sufficient to determine all the elements (Z > 11) contained in the samples. In addition, results suggest that XRD should be combined with XPS in order to accurately determine compound composition. This study demonstrates that at least two analytical methods should be used in order to analyze the composition of unknown real samples.

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Potential use of laser-induced breakdown spectroscopy combined laser cleaning for inspection of particle defect components on silicon wafer

Liu

Zhou

et al. 2019

J. Micro/Nanolith. MEMS MOEMS

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A different approach in sample preparation method for metallic contamination study by ToF-SIMS and TXRF

Cited by 5 publications

References 8 publications

Environment of Metal–O–Fe Bonds Enabling High Activity in CO₂ Reduction on Single Metal Atoms and on Supported Nanoparticles

Environment of Metal–O–Fe Bonds Enabling High Activity in CO₂ Reduction on Single Metal Atoms and on Supported Nanoparticles

Portable total reflection x-ray fluorescence analysis in the identification of unknown laboratory hazards

Potential use of laser-induced breakdown spectroscopy combined laser cleaning for inspection of particle defect components on silicon wafer

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A different approach in sample preparation method for metallic contamination study by ToF-SIMS and TXRF

Cited by 5 publications

References 8 publications

Environment of Metal–O–Fe Bonds Enabling High Activity in CO2 Reduction on Single Metal Atoms and on Supported Nanoparticles

Environment of Metal–O–Fe Bonds Enabling High Activity in CO2 Reduction on Single Metal Atoms and on Supported Nanoparticles

Portable total reflection x-ray fluorescence analysis in the identification of unknown laboratory hazards

Potential use of laser-induced breakdown spectroscopy combined laser cleaning for inspection of particle defect components on silicon wafer

Contact Info

Product

Resources

About

Environment of Metal–O–Fe Bonds Enabling High Activity in CO₂ Reduction on Single Metal Atoms and on Supported Nanoparticles

Environment of Metal–O–Fe Bonds Enabling High Activity in CO₂ Reduction on Single Metal Atoms and on Supported Nanoparticles