Environmental Molecular Sciences Laboratory

A DOE Office of Science User Facility

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Electron Spectrometer: Scanning Multiprobe Surface Analysis System - Versaprobe

The SMSAS is a multi-technique surface analysis instrument based on elemental mapping using either scanning small spot X-rays or the electronics in the analyzer. This scanning technology provides high-performance micro-area spectroscopy, chemical imaging, and secondary electron imaging with high spatial resolution.

For X-ray photoelectron spectroscopy (XPS), this system will include a:

  • Monochromatic, high-resolution Al X-ray source
  • Non-monochromatic dual-anode X-ray source
  • High-resolution hemispherical analyzer.

In addition, the system will include an intense He lamp for ultraviolet photoelectron spectroscopy (UPS), an argon ion gun for sputter depth profiling, and a C60 ion gun for high-resolution sputter depth profiling in organic and biological systems. This system will have an excellent dual beam charge neutralization method to provide effortless analysis of insulating samples using a combination of low energy ions and electrons. The system is equipped with an introduction chamber and a glove box for sample transfer under a controlled environment. In addition, EMSL staff will build a side chamber with limited processing capabilities and the existing transfer technology so that the portable transfer systems including vacuum suitcases can be attached to the main system through the side chamber.

Physical Operating Criteria Primary Performance Parameters
Operating Vacuum Conditions ≤ 2x10-10 Torr
X-ray Sources
  • Monochromatic Al X-ray source and non-monochromatic dual-anode X-ray source for XPS
  • He lamp for UPS
Spectrometer High-resolution hemispherical analyzer
Capabilities
  • XPS
  • UPS
  • Ar+, and C60+ sputter depth profiling
Specimen Exchange Capability
  • Sample introduction system
  • Future incorporation of EMSL transfer
Data Acquisition/Analysis

PC-based Computer workstation interface

 

Instrument ID:
34077
Availability: 10 hours a day, 5 days a week

Custodians

Shuttha Shutthanandan (509) 371-6530 Shuttha@pnnl.gov

Publications

Chromium-containing iron-based alloys Crofer22 APU and SS 441 and nickel-based alloy Inconel600, all commonly used in a solid oxide fuel cell (SOFC)...
Thin film of silicon germanium (Si1-xGex) with tailored composition was grown on Si (100) substrate at 650oC in an ultrahigh vacuum molecular beam...
Low-cost renewable lignin has been used as a precursor to produce porous carbons. However, to date, it has not been easy to obtain high surface area...
The interaction of phosphorus in synthetic coal gas with the nickel-based anode of solid oxide fuel cells has been investigated. Tests with both...
Amorphous zinc tin oxide (ZTO) was investigated to determine the effect of deposition and post annealing conditions on film structure, composition,...
A method to modulate the Schottky barrier heights for platinum and amorphous indium gallium zinc oxide (a-IGZO) interfaces is demonstrated through...
The ultrafine size fraction of ambient particles (ultrafine particles, UFP, diameter
The performance of anode-supported and electrolyte-supported solid oxide fuel cells was investigated in synthetic coal gas containing 0 to 10 ppm...
Electrochemical performance of the existing state-of-the art capacitors is not very high, key scientific barrier is that its charge storage mechanism...
Ru2P/SiO2 and RuP/SiO2 catalysts were prepared by the temperature-programmed reduction (TPR) of uncalcined precursors containing hypophosphite ion (...
Silica-supported rhodium phosphide (Rh2P/SiO2) catalysts were prepared and characterized by X-ray diffraction (XRD), transmission electron microscopy...
The interaction of antimony with the nickel-zirconia solid oxide fuel cell (SOFC) anode has been investigated. Tests with both anode-supported and...
We have used oxygen-plasma-assisted molecular beam epitaxy (OPA-MBE) to grow highly oriented Ce1-xSmxO2-d films on single crystal c-Al2O3. The...
99Technetium (99Tc) is a fission product of uranium-235 and plutonium-239 and poses a high environmental hazard due to its long half-life (t1/2 = 2....
We report on structural and optical changes induced by impurity incorporation in ZnO nanorods grown via electrodeposition. We find the lattice...
The performance of anode-supported solid oxide fuel cells (SOFC) was evaluated in synthetic coal gas containing HCl in the temperature range 650 to...
The operation of solid oxide fuel cells (SOFC) was evaluated on simulated coal gas in the presence of several coal gas impurities that are expected...
Surface Ni/Sb and Ni/Sb alloys were found to efficiently minimize the negative effects of sulfur on the performance of Ni/zirconia anode-supported...
Unsupported and silica-supported FexNi2-xPy catalysts having a range of metal compositions (0 FexNi2-xPy materials. Fe atoms preferentially occupy M...
The ohmic resistance of anode-supported solid oxide fuel cells having a manganese-based cathode was lowered when operated in synthetic coal gas...
Iron- reducing and oxidizing microorganisms gain energy through reduction or oxidation of iron, and by doing so they play an important role in...
Electronic structure methods were used to calculate the gas-phase and aqueous phase reaction energies for reductive dechlorination (i.e....
The hierarchically porous nitrogen-doped carbon materials, derived from nitrogen-containing isoreticular metal-organic framework-3 (IRMOF-3) through...
A quantitative study was conducted to understand if Fe (III) in loess sediments is available for microbial respiration by using a common metal...
The thermal oxidation of submicron metallic Zn particles was studied as a method to form nanostructured ZnO films. The particles used for this work...
Experimental and theoretical investigations were performed to investigate the effect of water on optical properties of nanoceria as a function of Ce3...
Zero-valent iron particles are an effective remediation technology for groundwater contaminated with halogenated organic compounds. In particular,...
Application of inorganic nanoparticles in diagnosis and therapy has become a critical component in targeted treatment of diseases. The surface...
Ceria (CeO2) is a technologically important ceramic material with a wide range of neoteric applications in catalysis1, solid oxide fuel cells2,...
The interaction of D2O with a thick BaO film (≥ 20 mono-layer equivalent (MLE)) on ultra-thin Al2O3/NiAl(110) was investigated with...
The spatial distribution of cerium valence in H2-reduced model planar Pd/Ce0.7Zr0.3O2 catalysts was determined by electron energy loss spectroscopy (...
Nanocrystalline WO3 films were grown by reactive magnetron sputter-deposition in a wide range of oxygen gas flow rates while keeping the deposition...
Electronic structure methods were used to calculate the gas-phase and aqueous phase reaction energies for reductive dechlorination (i.e....
High-quality ceria (CeO2) films were grown on sapphire (Al2O3) (0001) substrates using oxygen plasma-assisted molecular beam epitaxy. The epitaxial...
Silica-supported rhodium phosphide (Rh2P/SiO2) catalysts were prepared and characterized by X-ray diffraction (XRD), transmission electron microscopy...
The structure-reactivity relationships of model BaO-based NOx storage/reduction catalysts were investigated under well controlled experimental...
Cerium oxide nanoparticles (CeNPs) have shown promise as catalytic antioxidants in cell culture and animal models as both superoxide dismutase and...
The interaction of NO2 with amorphous and crystalline Ba(OH)2 supported on Pt(111) was studied in the wide pressure range of 1.0 × 10-9...
Ceria and zirconia based systems can be used as electrolytes to develop solid oxide fuel cells for clean energy production and to prevent air...
Reactions of NO2, H2O, and CO2 with a thick (> 20 MLE) BaO film supported on Pt(111) were studied with temperature programmed desorption (TPD) and...
The adsorption and reaction of NO2 on BaO (<1, ~3, and >20 monolayer equivalent (MLE))/Pt(111) model systems were studied with temperature...
Ru2P/SiO2 and RuP/SiO2 catalysts were prepared by the temperature-programmed reduction (TPR) of uncalcined precursors containing hypophosphite ion (...
High temperature oxygen sensors are widely used for exhaust gas monitoring in automobiles. This particular study explores the use of thin film single...
We have generated magnetically ultrasoft thin films composed of iron nanoclusters with diameters of about 20 nm by energetic cluster impact (ECI)....
The ultrafine size fraction of ambient particles (ultrafine particles, UFP, diameter < 100 nm) has been identified as being far more potent in...
Barium oxide (BaO) was grown on YSZ(111) substrate by oxygen-plasma-assisted molecular beam epitaxy (OPA-MBE). In-situ reflection high-energy...
The thermal oxidation of submicron metallic Zn particles was studied as a method to form nanostructured ZnO films. The particles used for this work...
Unsupported and silica-supported FexNi2-xPy catalysts having a range of metal compositions (0 < x 6 2.0) were investigated using M&ouml;...
The formation of adsorbed O (Oad) species and their reactivities in CO oxidation on BaO/Pt(111) (at two BaO coverages) were studied with temperature...
The impact of solution exposure on the charging properties of oxide coatings on Fe metal-core oxide-shells has been examined by sample biasing during...
Ba0.5Sr0.5Co0.8Fe0.2O(3-&#61540;&#61481; (BSCF) is a potential oxygen separation membrane material for advanced coal based power plants. For...
Synergistic interaction of catalyst and support has attracted the interest of the catalytic community for several decades. The decomposition/...
Amorphous zinc tin oxide (ZTO) was investigated to determine the effect of deposition and post annealing conditions on film structure, composition,...
Fast, sensitive and discriminating detection of hydrogen at room temperature is crucial for storage, transportation, and distribution of hydrogen as...
Several advanced air separation unit (ASU) designs being considered for use in coal gasification rely on the use of solid state mixed ionic and...
Nitrogen doped tungsten oxide (WO3) films were grown by reactive magnetron sputter-deposition by varying the nitrogen content in the reactive gas...
Cerium oxide nanoparticles (CNPs) have shown tremendous potential in various applications such as water gas shift catalysis, chemical mechanical...
Nanocrystalline WO3 thin films were produced by sputter-deposition by varying the ratio of argon to oxygen in the reactive gas mixture during...
We have used oxygen-plasma-assisted molecular beam epitaxy (OPA-MBE) to grow highly oriented Ce1-xSmxO2-&delta; films on single crystal c-Al2O3....
Much recent research effort has been made on the synthesis, characterization, and property evaluation of core-shell structured Fe nanoparticles....
Every now and then, reading a specific paper stimulates - in my mind at least - a variety of associations and connections that highlight advances...
A iron nanoparticle exposed to air at room temperature will be instantly covered by an oxide shell of typical thickness of ~ 3 nm. This native oxide...
The influence of coadsorbed water on the photodecomposition of acetone on TiO2 was examined using temperature programmed desorption (TPD) and the...
Several technical modifications related to the fabrication and ultra-high vacuum (UHV) treatment of the tips have been implemented to improve a...
The distribution of reaction sites on iron particles exposed to water containing carbon tetrachloride has been examined by measuring the locations of...
Tracking the same region of the reduced TiO2 (110) surface by scanning tunneling microscopy before and after oxygen exposure at room temperature...
Thin film of silicon germanium (Si1-xGex) with tailored composition was grown on Si (100) substrate at 650oC in an ultrahigh vacuum molecular beam...
In order to evaluate and analyze the effect of samarium (Sm) doping on the resistance of cerium oxide, we have grown highly oriented samaria doped...
The formation of nanorods, driven by the physico-chemical phenomena during the freezing of ceria nanoparticle suspension is reported. During freezing...
The NWChem software as been used to examine many nanoscale systems and their properties over the years. In this paper, an overiew of the general...
Aging (or longevity) is one of the most important and potentially limiting factors in the use of nano-Fe0 to reduce groundwater contaminants. We...
Many different degradation reactions of chlorinated hydrocarbons are possible in natural ground waters. In order to identify which degradation...
The combination of long term aging studies and molecular dynamics (MD) simulations has been successfully used to explain the time dependent,...
TiO2(110) surface was successfully prepared in-situ by UHV cleaving of a commercial TiO2 crystal.. STM imaging revealed atomically flat more than 1...
We recently have developed a framework for implementing a scaled self-interaction corrected density functional theory (DFT-SIC) into pseudopotential...
One of the more persistent failures of conventional density functional theory (DFT) methods has been their failure to yield localized charge states...
All films were grown by plasma assisted molecular beam epitaxy (PAMBE) in a custom chamber described elsewhere (1). Epitaxial films of TiO2-xNx(001...
Nanostructured materials are increasingly subject to nearly every type of chemical and physical analysis possible. Because of their small feature...
Sputter depth profiling is commonly used to obtain valuable information regarding the three dimensional distribution of elements within a sample, and...
The interaction of NO with adsorbed atomic oxygen on Pt(111) was studied with temperature programmed desorption (TPD), infrared reflection absorption...

Quick Specs

    • Ultrahigh vacuum
    • XPS capability
    • UPS capability
    • Sputter depth profiling capability

Science Highlights

Posted: Wednesday, April 15, 2015 - 14:40
Replacing internal combustion engines with fuel cells is not currently feasible because the cells use platinum-based catalysts, and platinum is a...

Projects

Energy shortage is a critical problem in the 21th century. Developing highly efficient and high capacity energy storage device such as lithium iron...
Our research will be directed at examining metal layers deposited on three distinct silica particles by tow unique methods by both ToF-SIMS and XPS
Carbon dioxide is a known greenhouse gas and contributor to global warming, while methanol is a convenient chemical feedstock, H2 storage medium, and...
Plutonium is an element of concern because of its radiotoxicity. At Savannah River Site (SRS), as a result of processing Pu for nuclear weapons,...
The overarching research objective is development of a portable electrical sensor for rapid detection of trace gases with enhanced sensitivity and...