The electrocatalytic CO or CO reduction reaction is a complex proton-coupled electron transfer reaction, in which protons in the electrolyte have a critical effect on the surface adsorbed H species and the multi-carbon oxygenate products such as ethanol. However, the coupling of H and carbon-containing intermediates into C oxygenates can be severely hampered by the inappropriate distributions of those species in the catalytic interfaces. In this work, the controlled distribution of highly dispersed CeO nanoclusters is demonstrated on Cu nanosheets as an efficient CO electroreduction catalyst, with Faradaic efficiencies of ethanol and total oxygenates of 35% and 58%, respectively. The CeO nanoclusters (2-5 nm) enabled efficient water dissociation and appropriate distribution of adsorbed H species on the Cu surface with carbon-containing species, thus facilitating the generation of C oxygenate products. In contrast, pristine Cu without CeO tended to form ethylene, while the aggregated CeO nanoparticles promoted the surface density of H and subsequent H evolution.
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http://dx.doi.org/10.1002/smtd.202400393 | DOI Listing |
J Am Chem Soc
January 2025
Key Laboratory for Ultrafine Materials of Ministry of Education, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China.
Green electricity-driven alkenol electrosynthesis via electrocatalytic alkynol semihydrogenation represents a sustainable route to conventional thermocatalysis. Both the electrocatalyst and electrolyte strongly impact the semihydrogenation performance. Despite significant progress in developing sophisticated electrocatalysts, a well-designed electrolyte in conjunction with industrial catalysts is an attractive strategy to advance the industrialization process of electrocatalytic alkynol semihydrogenation, but remains unexplored.
View Article and Find Full Text PDFJ Neurosci Res
January 2025
Canadian Centre for Behavioural Neuroscience, University of Lethbridge, Lethbridge, Alberta, Canada.
Evidence suggests that hippocampal (HPC) disruption following learning produces retrograde amnesia on a range of tasks. Many of these tasks do not require HPC function in the anterograde direction suggesting that, in the intact brain, the HPC is actively involved during all forms of learning. However, prior work has also demonstrated double dissociations of HPC and amygdala function, which is inconsistent with this view.
View Article and Find Full Text PDFRapid Commun Mass Spectrom
March 2025
Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Canada.
Rationale: In electrospray ionization and atmospheric pressure chemical ionization, the protonation site directly guides the ion's dissociation. But what if the site of protonation is ambiguous? In this study, we explored the unimolecular reactions of protonated α- and β-pinene ions with a combination of tandem mass spectrometry and theory. Each has multiple potential protonation sites that influence their chemistry.
View Article and Find Full Text PDFFood Chem
December 2024
Shandong Province Grilled Chicken Co., Ltd., Dezhou 253000, China.
Effects of varying levels of arginine (Arg) and aspartic acid (Asp) on the water-holding capacity (WHC) and eating quality of marinated pork meat were investigated. The addition of Arg significantly enhanced the WHC of marinated pork meat (P < 0.05) due to the increased pH levels of the meat.
View Article and Find Full Text PDFJ Colloid Interface Sci
December 2024
School of Mechanical Engineering, Qinghai University, Xining 810016, PR China. Electronic address:
Ensuring Ruthenium-based (Ru) catalysts with high metal utilization is a potential and challenging strategy for designing and constructing high catalytic activity electrocatalysts for hydrogen evolution reaction (HER). Herein, Ruthenium single atoms (SA) and Ruthenium nanoparticles (NPs) are simultaneously anchored on hierarchically porous carbon via the self-templates method for the first time. Benefiting from the synergetic effect of hierarchically porous carbon and the coexistence of Ru SA and Ru NPs, the Ru/C-800 shows attractive HER catalytic activity in acidic and alkaline solutions, with low overpotentials to drive the current density of 10 mA cm and the smallest Tafel slope.
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