S
Samuel M. Webb
Researcher at SLAC National Accelerator Laboratory
Publications - 176
Citations - 10966
Samuel M. Webb is an academic researcher from SLAC National Accelerator Laboratory. The author has contributed to research in topics: Chemistry & Oxide. The author has an hindex of 48, co-authored 159 publications receiving 9373 citations. Previous affiliations of Samuel M. Webb include Massachusetts Institute of Technology & University of Florida.
Papers
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Journal ArticleDOI
Biogenic manganese oxides: Properties and mechanisms of formation
Bradley M. Tebo,John R. Bargar,Brian G. Clement,Gregory J. Dick,Karen J. Murray,Dorothy L. Parker,Rebecca Verity,Samuel M. Webb +7 more
TL;DR: The primary Mn(IV) biooxide formed is a phyllomanganate most similar to δ-MnO2 or acid birnessite, and metal sequestration by the Mn biooxides occurs predominantly at vacant layer octahedral sites.
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SIXpack: A Graphical user interface for XAS analysis using IFEFFIT
TL;DR: Sam's Interface for XAS analysis Package (SIXPack) as discussed by the authors is a graphical user interface that allows users simple manipulation and analysis of data, which is particularly useful for analysis of geochemical and environmental systems.
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In situ X-ray absorption spectroscopy investigation of a bifunctional manganese oxide catalyst with high activity for electrochemical water oxidation and oxygen reduction.
Yelena Gorlin,Benedikt Lassalle-Kaiser,Jesse D. Benck,Sheraz Gul,Samuel M. Webb,Vittal K. Yachandra,Junko Yano,Thomas F. Jaramillo +7 more
TL;DR: In situ XAS measurements on a bifunctional manganese oxide catalyst with high electrochemical activity for the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) demonstrate that the OER activity scales with film thickness, which suggests that the films have porous structure, which does not restrict electrocatalysis to the top geometric layer of the film.
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A Bacterium That Can Grow by Using Arsenic Instead of Phosphorus
Felisa Wolfe-Simon,Felisa Wolfe-Simon,Jodi Switzer Blum,Thomas R. Kulp,Gwyneth W. Gordon,Shelley E. Hoeft,Jennifer Pett-Ridge,John F. Stolz,Samuel M. Webb,Peter K. Weber,Paul Davies,Paul Davies,Ariel D. Anbar,Ariel D. Anbar,Ronald S. Oremland +14 more
TL;DR: A bacterium is described, isolated from Mono Lake, California, that is able to substitute arsenic for phosphorus to sustain its growth and exchange of one of the major bio-elements may have profound evolutionary and geochemical importance.
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Evidence for the presence of Mn(III) intermediates in the bacterial oxidation of Mn(II)
TL;DR: It is shown that Mn(II) oxidation by spores of the marine Bacillus sp.