In order to design more powerful electrocatalysts, developing our understanding of the role of the surface structure and composition of widely abundant bulk materials is crucial. This is particularly true in the search for alternative hydrogen evolution reaction (HER) catalysts to replace platinum. We report scanning electrochemical cell microscopy (SECCM) measurements of the (111)-crystal planes of Fe Ni S , a highly active HER catalyst. In combination with structural characterization methods, we show that this technique can reveal differences in activity arising from even the slightest compositional changes. By probing electrochemical properties at the nanoscale, in conjunction with complementary structural information, novel design principles are revealed for application to rational material synthesis.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/anie.201712679 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Chemically Hydrophobic and Structurally Antireflective Nanocoatings in Butterflies.
ACS Appl Bio Mater
January 2025
Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, Rue Michel Servet 1, Geneva CH-1211, Switzerland.
Moth-eye nanostructures, known for their biological antireflective properties, are formed by a self-assembly mechanism. Understanding and replicating this mechanism on artificial surfaces open avenues for the engineering of bioinspired multifunctional nanomaterials. Analysis of corneal nanocoatings from butterflies of the genus reveals a variety of nanostructures with uniformly strong antiwetting properties accompanied by varying antireflective functionalities.
View Article and Find Full Text PDFSelf-assembly of chiroptical ionic co-crystals from silver nanoclusters and organic macrocycles.
Nat Chem
January 2025
Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA.
Atomically precise nanoclusters can be assembled into ordered superlattices with unique electronic, magnetic, optical and catalytic properties. The co-crystallization of nanoclusters with functional organic molecules provides opportunities to access an even wider range of structures and properties, but can be challenging to control synthetically. Here we introduce a supramolecular approach to direct the assembly of atomically precise silver nanoclusters into a series of nanocluster‒organic ionic co-crystals with tunable structures and properties.
View Article and Find Full Text PDFTandem kinase proteins across the plant kingdom.
Nat Genet
January 2025
Institute of Evolution, University of Haifa, Haifa, Israel.
Plant pathogens pose a continuous threat to global food production. Recent discoveries in plant immunity research unveiled a unique protein family characterized by an unusual resistance protein structure that combines two kinase domains. This study demonstrates the widespread occurrence of tandem kinase proteins (TKPs) across the plant kingdom.
View Article and Find Full Text PDFOptimizing concrete sustainability with bagasse ash and stone dust and its impact on mechanical properties and durability.
Sci Rep
January 2025
College of Civil Engineering, Department of Bridge Engineering, Tongji University, Shanghai, 200092, China.
Addressing environmental challenges such as pollution and resource depletion requires innovative industrial and municipal waste management approaches. Cement production, a significant contributor to greenhouse gas emissions, highlights the need for eco-friendly building materials to combat global warming and promote sustainability. This study evaluates the simultaneous use of Sugarcane Bagasse Ash (SCBA) and Stone Dust (SD) as partial replacements by volume for cement and sand, respectively, at varying ratios in eco-strength concrete mixes designed for 28 MPa (ES-28) and 34 MPa (ES-34), emphasizing their economic and environmental benefits.
View Article and Find Full Text PDFDevelopment of a new solar system integrating photovoltaic and thermoelectric modules with paraffin-based nanomaterials.
Sci Rep
January 2025
Department of Mechanical Engineering, Babol Noshirvani University of Technology, Babol, Islamic Republic of Iran.
This study investigates a comprehensive enhancement strategy for photovoltaic (PV) panel efficiency, focusing on increasing electrical output through the integration of parabolic reflectors, advanced cooling mechanisms, and thermoelectric generation. Parabolic reflectors are implemented in the system to maximize solar irradiance on the PV panel's surface, while a specialized cooling system is introduced to regulate temperature distribution across the silicon layer. This cooling system consists of a finned duct filled with paraffin (RT35HC) and enhanced with SWCNT nanoparticles, which improve the thermal properties of the paraffin, facilitating more effective heat dissipation.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!