XPS core level spectra and Auger parameters for some silver compounds

Kaushik, Vijay Kumar

doi:10.1016/0368-2048(91)85008-h

Cited by 464 publications

(261 citation statements)

References 29 publications

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“…8b). The Auger parameter for sensor B with a value of 723.6 is closer to that for AgCl (723.5) [47]. The surface atomic concentration for sensor B (Table 1) gives a ratio between Ag:Cl:O = 0.8:1.3:1.…”

Section: Xps Analysis For Sensors a And Bmentioning

confidence: 65%

“…Figure 8a depicts the Ag3d spectra. The characteristic 3D states of different Ag compounds and metallic Ag (Ag 0 ) are very close to each other, i.e., within 0.5 eV [47,48]. Hence, the binding energy positions of Ag3d do not unambiguously identify the actual state of Ag.…”

Section: Surface Chemistry and Compositionmentioning

confidence: 96%

“…8a), which is attributed to Ag ? in AgO [47]. The kinetic energy of the AgMNN peak for the same specimen was measured at 356.2 eV (Fig.…”

Section: Xps Analysis For Sensors a And Bmentioning

confidence: 99%

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Microstructure, surface chemistry and electrochemical response of Ag|AgCl sensors in alkaline media

et al. 2018

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Characterization of the Ag/AgCl electrode is a necessary step toward its application as a chloride sensor in a highly alkaline medium, such as concrete. The nucleation and growth of AgCl on Ag in 0.1 M HCl was verified through cyclic voltammetry. Ag anodization was performed at current densities, determined by potentiodynamic polarization in the same (0.1 M HCl) medium. The morphology and microstructure of the AgCl layers were evaluated via electron microscopy, while surface chemistry was studied through energy-dispersive spectroscopy and X-ray photoelectron spectroscopy. At current density above 2 mA/cm 2 , the thickness and heterogeneity of the AgCl layer increased. In this condition, small AgCl particles formed in the immediate vicinity of the Ag substrate, subsequently weakening the bond strength of the Ag/AgCl interface. Silver oxide-based or carbon-based impurities were present on the surface of the sensor in amounts proportional to the thickness and heterogeneity of the AgCl layer. It is concluded that a well-defined link exists between the properties of the AgCl layer, the applied current density and the recorded overpotential during Ag anodization. The results can be used as a recommendation for preparation of chloride sensors with stable performance in cementitious materials.

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Section: Xps Analysis For Sensors a And Bmentioning

confidence: 65%

Section: Surface Chemistry and Compositionmentioning

confidence: 96%

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Microstructure, surface chemistry and electrochemical response of Ag|AgCl sensors in alkaline media

et al. 2018

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“…The existence of these three peaks can be explained by the presence of more than one chemical bonding state between Ag and S such as AgS and Ag 2 S compounds. 25,26 The peaks labeled I and II in figures 2 and 3 were also observed and measured at similar BEs on the layered structure (P3HT on Ag) for film thickness between 0.25 to 1.0 nm. 20 The latter weak feature (peak III) is not very clear in layered structures 20 which may be due to the smaller interfacial area or the absence of mixing of the two vapor species that usually promote stronger chemical interaction.…”

Section: Resultsmentioning

confidence: 53%

Photoemission Spectroscopy and Atomic Force Microscopy Investigation of Vapor-Phase Codeposited Silver/Poly(3-hexylthiophene) Composites

Scudiero

Wei

Eilers

2009

ACS Appl. Mater. Interfaces

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Nanocomposite matrices of silver/poly(3-hexylthiophene) (P3HT) were prepared in ultrahigh vacuum through vapor-phase co-deposition. Change in microstructure, chemical nature and electronic properties with increasing filler (Ag) content were investigated using in-situ XPS and UPS, and ambient AFM. At least two chemical binding states occur between Ag nanoparticles and sulfur in P3HT at the immediate contact layer but no evidence of interaction between Ag and carbon (in P3HT) was found. AFM images reveal a change in Ag nanoparticles size with concentration which modifies the microstructure and the average roughness of the surface. Under co-deposition, P3HT largely retains its conjugated structures, which is evidenced by the similar XPS and UPS spectra to those of P3HT films deposited on other substrates. We demonstrate here that the magnitude of the barrier height for hole injection ( and the position of the highest occupied band edge (HOB) with respect to the Fermi level of Ag can be controlled and changed by adjusting the metal (Ag) content in the composite. Furthermore, UPS reveals distinct features related to the C 2p (-states) in the 5-12 eV regions, indicating the presence of ordered P3HT which is different from solution processed films.

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“…The spectra collected at Ag3d region for Ag nanoparticles containing sample exhibits one doublet structure where Ag3d 5/2 peak (FWHM=1.1 eV) is centered at binding energy of 368.1 eV, which indicate Ag 0 state [25,26]. Atomic concentrations of fitted compounds are presented in Table 2 for both samples.…”

Section: Xps Analysis Of Obtained Materialsmentioning

confidence: 99%

Influence of Experimental Conditions on Deposition of Silver Nanoparticles Onto Surface of Graphene Oxide / Wpływ Warunków Eksperymentalnych Na Proces Osadzania Nanocząstek Srebra Na Powierzchni Tlenku Grafenu

Wojnicki¹,

Mania²,

Marzec³

et al. 2015

Archives of Metallurgy and Materials

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Present work describes the influence of silver nanoparticles precursor form as well as the impact of graphene oxide initial concentration on deposition of the silver nanoparticles onto graphene oxide. Borane dimethylamine complex (DMAB) was used as the reducing agent. It was observed that application of silver ammonia complexes as the silver nanoparticles precursor as well as alkaline solution effect in higher quantity of deposited AgNPs in comparison to deposition process with the use of silver(I) nitrate in acidic solution.

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XPS core level spectra and Auger parameters for some silver compounds

Cited by 464 publications

References 29 publications

Microstructure, surface chemistry and electrochemical response of Ag|AgCl sensors in alkaline media

Microstructure, surface chemistry and electrochemical response of Ag|AgCl sensors in alkaline media

Photoemission Spectroscopy and Atomic Force Microscopy Investigation of Vapor-Phase Codeposited Silver/Poly(3-hexylthiophene) Composites

Influence of Experimental Conditions on Deposition of Silver Nanoparticles Onto Surface of Graphene Oxide / Wpływ Warunków Eksperymentalnych Na Proces Osadzania Nanocząstek Srebra Na Powierzchni Tlenku Grafenu

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