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Journal ArticleDOI

Electron spectroscopy of platinum-oxygen surfaces and application to electrochemical studies

01 Nov 1971-Journal of the American Chemical Society (American Chemical Society)-Vol. 93, Iss: 23, pp 6296-6297
About: This article is published in Journal of the American Chemical Society.The article was published on 1971-11-01. It has received 371 citations till now. The article focuses on the topics: Platinum & Electron spectroscopy.
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Journal ArticleDOI
TL;DR: In this paper, the surface chemistry of the nickel-oxygen system using both temperature changes and ion bombardment as techniques for elucidating the surface structure was studied using both X-ray photoelectron lines and the Auger transitions.

737 citations

Journal ArticleDOI
TL;DR: Photoluminescence and photoelectrochemical measurements indicated that the high activity of this Z-scheme system results from the moderated n-type semiconducting character of ZrO(2)/TaON, which results in a lower probability of undesirable electron-hole recombination in Zr O(2/TaON than in TaON.
Abstract: A two-step photocatalytic water splitting (Z-scheme) system consisting of a modified ZrO2/TaON species (H2 evolution photocatalyst), an O2 evolution photocatalyst, and a reversible donor/acceptor pair (i.e., redox mediator) was investigated. Among the O2 evolution photocatalysts and redox mediators examined, Pt-loaded WO3 (Pt/WO3) and the IO3−/I− pair were respectively found to be the most active components. Combining these two components with Pt-loaded ZrO2/TaON achieved stoichiometric water splitting into H2 and O2 under visible light, achieving an apparent quantum yield of 6.3% under irradiation by 420.5 nm monochromatic light under optimal conditions, 6 times greater than the yield achieved using a TaON analogue. To the best of our knowledge, this is the highest reported value to date for a nonsacrificial visible-light-driven water splitting system. The high activity of this system is due to the efficient reaction of electron donors (I− ions) and acceptors (IO3− ions) on the Pt/ZrO2/TaON and Pt/WO3 ph...

626 citations

Journal ArticleDOI
TL;DR: In this article, the Pt + Ru binary catalyst has been developed which provides a simple way of obtaining a specific surface area (ca. 80 m2 g−1) more than 3 times larger than that obtained by conventional methods.

553 citations

Journal ArticleDOI
B.E. Conway1
TL;DR: In this article, the formation of the oxide films can be examined in detail by recording the distinguishable stages in the film's electrochemical reduction in linear-sweep voltammetry which is sensitive down to OH O fractional coverages as low as 0.5% and over time-scales down to 50μs in experiments on time-evolution and transformation of oxide films.

548 citations