Topic
Noble metal
About: Noble metal is a research topic. Over the lifetime, 15113 publications have been published within this topic receiving 337947 citations.
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TL;DR: In this article, a Pt monolayer was deposited on carbon-supported Co-Pd core-shell nanoparticles by the galvanic displacement of a Cu monolayers obtained by underpotential deposition, yielding a Pd shell around the Co core.
177 citations
TL;DR: A facile cation-exchange approach to obtain compounds with both properties without the need for noble metals by forming Janus-like structures consisting of γ-MnS and Cu7 S4 with high-quality interfaces is reported.
Abstract: Z-scheme water splitting is a promising approach based on high-performance photocatalysis by harvesting broadband solar energy. Its efficiency depends on the well-defined interfaces between two semiconductors for the charge kinetics and their exposed surfaces for chemical reactions. Herein, we report a facile cation-exchange approach to obtain compounds with both properties without the need for noble metals by forming Janus-like structures consisting of γ-MnS and Cu7S4 with high-quality interfaces. The Janus-like γ-MnS/Cu7S4 structures displayed dramatically enhanced photocatalytic hydrogen production rates of up to 718 μmol g−1 h−1 under full-spectrum irradiation. Upon further integration with an MnOx oxygen-evolution cocatalyst, overall water splitting was accomplished with the Janus structures. This work provides insight into the surface and interface design of hybrid photocatalysts, and offers a noble-metal-free approach to broadband photocatalytic hydrogen production.
177 citations
TL;DR: In this paper, it was shown that in many instances electrocatalytic processes at noble metal electrode/aqueous solution interfaces involve hydrous oxides as mediators and inhibitors in oxidation and reduction processes, respectively.
177 citations
TL;DR: In this article, the authors comprehensively summarize the significant and recent advances in room-temperature HCHO oxidation over noble metal-based catalysts, which contain platinum (Pt), gold (Au), palladium (Pd), silver (Ag), and/or rhodium (Rh) as the essential ingredient.
176 citations
TL;DR: The electrochemical behavior of calcium electrodes in a few important organic electrolyte has been investigated in this article, where various techniques including cyclic voltammetry, Fourier transform infrared spectroscopy, scanning electron microscopy, and x-ray microanalysis were used in order to characterize discharge processes of calcium anodes in the various systems, and to correlate them with the surface chemistry and morphology of calcium in the electrolyte solutions.
Abstract: The electrochemical behavior of calcium electrodes in a few important organic electrolyte has been investigated. The solvents used included acetonitrile, tetrahydrofuran, γ‐butyrolactone, and propylene carbonate, and the salts included, , , and tetrabutyl ammonium salts (, ). Various techniques, including cyclic voltammetry, Fourier transform infrared spectroscopy, scanning electron microscopy, and x‐ray microanalysis were used in order to characterize discharge processes of calcium anodes in the various systems, and to correlate them with the surface chemistry and morphology of calcium in the electrolyte solutions. Some important surface species formed in the above systems were identified. It was found that, as with lithium, discharge of calcium anodes is surface film‐controlled. In contrast to lithium systems, however, calcium deposition in these solvent systems, either on calcium or noble metal electrodes, is impossible, due to the nature of the surface films formed.
176 citations