Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
High-entropy oxides are a new type of material with significant application potential. However, the lack of a universal HEO preparation method severely limits the property study and application of HEOs. Herein, we report a universal approach of spray pyrolysis for the preparation of various HEOs and study the electrocatalytic performance of HEOs toward the oxygen evolution reaction. FeCoNiMoWO HEO exhibits an overpotential of 281 mV at 10 mA cm and a Tafel slope of 34.5 mV dec, which are far superior to those of the corresponding medium-entropy oxide and low-entropy oxide. It is found that the high entropy of the HEO greatly strengthens the interaction between Fe and Mo/W and produces abundant oxygen vacancies (OVs) around Mo and W. This work not only provides a universal preparation method for HEOs but also deepens our understanding of OER catalytic activity of HEOs.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.inorgchem.4c00778 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Asymmetric Fe-O-Ni Pair Sites in Two-Step Dealloyed Prussian Blue Analogue Nanocubes Enrich Linear-Adsorbed Intermediates for Efficient Oxygen Evolution.
ACS Nano
September 2025
Eastern Institute for Advanced Study, Eastern Institute of Technology, Ningbo, Zhejiang 315200, P. R. China.
Ni-Fe (oxy)hydroxides are among the most active oxygen evolution reaction (OER) catalysts in alkaline media. However, achieving precise control over local asymmetric Fe-O-Ni active sites in Ni-Fe oxyhydroxides for key oxygenated intermediates' adsorption steric configuration regulation of the OER is still challenging. Herein, we report a two-step dealloying strategy to fabricate asymmetric Fe-O-Ni pair sites in the shell of NiOOH@FeOOH/NiOOH heterostructures from NiFe Prussian blue analogue (PBA) nanocubes, involving anion exchange and structure reconstruction.
View Article and Find Full Text PDFConstructing Ni(OH) nanosheets on a nickel foam electrode for efficient electrocatalytic ethanol oxidation.
Dalton Trans
September 2025
Sun Yat-Sen University, MOE Laboratory of Polymeric Composite and Functional Materials, School of Materials Science and Engineering, Guangzhou 510275, China.
The main bottleneck faced by traditional hydrogen production technology through water electrolysis lies in the high energy consumption of the anodic oxygen evolution reaction (OER). Combining the thermodynamically favorable ethanol oxidation reaction (EOR) with the hydrogen evolution reaction provides a promising route to reduce the energy consumption of hydrogen production and generate high value-added products. In this study, a facile method was developed for nickel oxyhydroxide (NiOOH) fabrication.
View Article and Find Full Text PDFg-CN/BiO hetero-nanosheets as a superior electrocatalyst for nitrate reduction to ammonia.
Chem Commun (Camb)
September 2025
State Key Laboratory of New Textile Materials & Advanced Processing Technology, College of Materials Science and Engineering, Wuhan Textile University, Wuhan, 430200, China.
The faradaic efficiency of the electro-synthesis of ammonia using the nitrate reduction reaction (NORR) relies on an electrocatalyst to hydrogenate NO and simultaneously suppress the hydrogen evolution reaction (HER). Due to the formation of a heterostructure, the faradaic efficiency of g-CN/BiO reaches 91.12% at -0.
View Article and Find Full Text PDFRotenoid diversity, distribution and evolution in plant lineages.
Nat Prod Rep
September 2025
Royal Botanic Gardens Kew, Richmond, London, TW9 3AE, UK.
Covering upto 2025Rotenoids are angular hybrid isoflavonoids mainly characterized by an additional six-membered ring between the B and C rings of flavonoids. The extra ring introduces further chemical diversity to the densely substituted precursors, isoflavonoids, making rotenoids a significant group of compounds within the plant kingdom. Early biosynthesis studies by L.
View Article and Find Full Text PDFTransformation of Co(OH) to CoOOH for Photocatalytic Oxygen Evolution Reaction.
J Phys Chem Lett
September 2025
Department of Electrical and Computer Engineering, University of Houston, Houston, Texas 77204, United States.
The development of efficient and economical oxygen evolution reaction (OER) catalysts is highly desired, and cobalt-based nanomaterials are promising candidates. In this work, we tackle one key question for cobalt-assisted photocatalytic OER: What is the true active species of Co(OH) for the photocatalytic OER? Hence, we investigated photocatalytic OER on nanostructured Co(OH) and CoO for comparison. We found that there was a significant transformation of Co(OH) during the photocatalytic process with a [Ru(bpy)]/SO buffer.
View Article and Find Full Text PDF