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The electrocatalytic conversion of 5-hydroxymethylfurfural (HMF) represents a green strategy for valorizing biomass-derived platform molecules into renewable fuels and value-added chemicals. However, most current electrocatalysts focus on reducing HMF to 2,5-furandimethanol (BHMF), while the selective reduction of HMF into 5-methyl-2-furanmethanol (MFA) in neutral electrolytes has received much less progress. In this work, we developed a CuGe intermetallic catalyst to modulate the electronic properties of Cu. Compared to pure Cu with the BHMF selectivity, the introduction of Ge atoms enhances the electron localization on the Cu lattice, facilitating the preferential CO bond cleavage and promoting the selective formation of MFA. The CuGe catalyst demonstrated an enhanced MFA selectivity of 27% ± 4%, suggesting a potential strategy for tuning electrocatalyst properties to achieve different reduction products.
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http://dx.doi.org/10.1016/j.jcis.2025.137807 | DOI Listing |
Angew Chem Int Ed Engl
September 2025
Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, LIFM, IGCME, GBRCE for Functional Molecular Engineering, Sun Yat-Sen University, Guangzhou, 510006, China.
Oximes serve as indispensable intermediates in synthetic chemistry, owing to their distinctive C═N─OH structure, conferring highly versatile reactivity. Synthesis of oxime via the electrochemical method has potential advantages, accompanied by the upgrading of industrialization. Herein, we propose a novel strategy by introducing nickel (Ni) mediation to obtain high-spin iron (Fe)(III) in phthalocyanine structure for synthesizing glyoxylate oxime via electrocatalytic nitric oxide (NO) coupling with keto acid.
View Article and Find Full Text PDFAdv Mater
September 2025
School of Chemistry and Chemical Engineering, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Mi
Ammonia oxidation reaction (AOR) is critical for efficient ammonia utilization as a hydrogen carrier, yet state-of-the-art Pt-based catalysts suffer significant activity loss due to strong NO species (NO, NO) adsorption. Herein, Pd@Pt mesoporous core-shell nanospheres with interstitial Co in Pt shell (Pd@Pt-Co MCSN) are demonstrated as an excellent AOR electrocatalyst, which achieves a mass activity of 293.6 A g at 0.
View Article and Find Full Text PDFNat Chem
September 2025
Department of Chemistry, University of Wisconsin-Madison, Madison, WI, USA.
Proton transfer plays an important role in both hydrogen and oxygen evolution reactions during electrocatalytic water splitting to produce green hydrogen. However, directly adapting the conventional proton/deuterium kinetic isotope effect to study proton transfer in heterogeneous electrocatalytic processes is challenging. Here we propose using the shift in the Tafel slope between protic and deuteric electrolytes, or the Tafel slope isotope effect, as an effective probe of proton transfer characteristics.
View Article and Find Full Text PDFACS Appl Mater Interfaces
September 2025
Instituto de Cerámica y Vidrio (ICV-CSIC), C/Kelsen 5, 28049 Madrid, Spain.
The oxygen reduction reaction (ORR) is critical to energy conversion technologies and requires efficient catalysts for superior performance. Herein, nitrogen-doped carbide-derived carbon (N-CDC) catalysts are prepared using novel engineered molecular architectures based on polymer-derived ceramic technology. The obtained catalyst materials show a surface N concentration of >5 wt % and a hierarchically porous structure, resulting in a specific surface area of over 2000 m g.
View Article and Find Full Text PDFAdv Mater
September 2025
Center of Electron Microscopy, State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang Key Laboratory of Low-Carbon Synthesis of Value-Added Chemicals, Zhejiang University, Hangzhou, 310027, China.
Electrocatalysis, a pivotal field at the intersection of physical chemistry and materials science, plays a crucial role in advancing energy conversion and storage technologies through rational catalyst design. However, understanding reaction mechanisms at the atomic level remains a great challenge due to the intricate interplay between catalysts, reactants, and complex environments (e.g.
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