![]() ![]() Importantly, it is shown that the prepared thin film coatings enabled prolonged hydrogen oxidation in the presence of CO (up to 5 vol.%), demonstrating the benefits of thin-film-protected electrocatalysts. It is shown that the permeation of diatomic probe molecules, such as O2 and CO, was significantly reduced by films as thin as four monolayers. The results are discussed in terms of mass transport properties and structure of the electrodeposited chromium oxyhydroxide films. Electrodeposited CrxOyHz coatings were electrochemically characterized using voltammetry and stripping experiments, allowing thickness-dependent film selectivity to be deduced in detail. Here, a highly reproducible synthesis protocol was developed to allow for the electrodeposition of CrxOyHz-based thin films with controlled thickness in the range of the sub-monolayer up to (>4) multilayer coverage. N2 - Chromium-oxyhydroxide (CrxOyHz)-based thin films have previously been shown in photocatalysis and industrial chlorate production to prevent unwanted reduction reactions to occur, thereby enhancing the selectivity for hydrogen evolution and thus the overall process efficiency. This research was funded by The Dutch Research Council (NWO), grant number 739.017.015. T2 - Influence of Layer Thickness on Selectivity ![]() T1 - Controlled Synthesis of Chromium-Oxide-Based Protective Layers on Pt In general, this study provides insight into the synthesis and use of thin-film-protected electrodes leading to improvements in (electro)catalyst selectivity and durability.", In general, this study provides insight into the synthesis and use of thin-film-protected electrodes leading to improvements in (electro)catalyst selectivity and durability.Ībstract = "Chromium-oxyhydroxide (CrxOyHz)-based thin films have previously been shown in photocatalysis and industrial chlorate production to prevent unwanted reduction reactions to occur, thereby enhancing the selectivity for hydrogen evolution and thus the overall process efficiency. It is shown that the permeation of diatomic probe molecules, such as O 2 and CO, was significantly reduced by films as thin as four monolayers. Electrodeposited Cr xO yH z coatings were electrochemically characterized using voltammetry and stripping experiments, allowing thickness-dependent film selectivity to be deduced in detail. Here, a highly reproducible synthesis protocol was developed to allow for the electrodeposition of Cr xO yH z-based thin films with controlled thickness in the range of the sub-monolayer up to (>4) multilayer coverage. Chromium-oxyhydroxide (Cr xO yH z)-based thin films have previously been shown in photocatalysis and industrial chlorate production to prevent unwanted reduction reactions to occur, thereby enhancing the selectivity for hydrogen evolution and thus the overall process efficiency. ![]()
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