MnCo spinel oxide catalysts were successfully synthesized by the calcination of bimetallic Mn/Co-MOFs as sacrificial templates. The derived catalysts exhibited optimal catalytic activity, reusability and thermal stability for toluene oxidation, which was ascribed to their large specific surface area, higher number of octahedral metal ions and the weakest metal-oxygen bonds.
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http://dx.doi.org/10.1039/d4cc01732c | DOI Listing |
ACS Appl Nano Mater
December 2024
Department of Inorganic Chemistry, Charles University, Hlavova 2030/8, 128 43 Prague 2, Czech Republic.
Designing well-defined magnetic nanomaterials is crucial for various applications, and it demands a comprehensive understanding of their magnetic properties at the microscopic level. In this study, we investigate the contributions to the total anisotropy of Mn/Co mixed spinel nanoparticles. By employing neutron measurements sensitive to the spatially resolved surface anisotropy with sub-Å space resolution, we reveal an additional contribution to the anisotropy constant arising from shape anisotropy and interparticle interactions.
View Article and Find Full Text PDFJ Colloid Interface Sci
January 2025
Key Laboratory of Automobile Materials, Department of Materials Science and Engineering, Jilin University, Changchun 130025, China.
Alkaline water electrolysis is regarded as a promising technology for sustainable energy conversion. Spinel oxides have attracted considerable attention as potential catalysts because of their diverse metal valence states. However, achieving the required current densities at low voltages is a challenge due to its limited active sites and suboptimal electron transport.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
September 2024
School of Chemistry and Chemical Engineering, Ministry of Education, Guangzhou University, Guangzhou 510006.
RSC Adv
August 2024
Laboratory of Advanced Multifunctional Materials and Technological Applications, Faculty of Science and Technology of Sidi Bouzid, University Campus Agricultural City, University of Kairouan Sidi Bouzid 9100 Tunisia.
In this study, we investigated the optoelectronic performance of magnesium spinel chromites with nickel (Ni) and copper (Cu) substitutions. Using the sol-gel method, we synthesized two spinel chromites: MgNiCrO (MNCO) and MgCuCrO (MCCO). We extensively characterized these samples to analyze their thermal, structural, elastic, and optical properties.
View Article and Find Full Text PDFJ Colloid Interface Sci
December 2024
School of Chemistry and Chemical Engineering, Department of Chemical Engineering, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, Zhejiang, China. Electronic address:
Coupling hydrazine oxidation reaction (HzOR) with hydrogen evolution reaction (HER) has been widely concerned for high efficiency of green hydrogen preparation with low energy consumption. However, the lacking of bifunctional electrodes with ampere-level performance severely limits its industrialization. Herein, we put forward an efficient active site anchored strategy for MnCoO nanosheet arrays on nickel foam (NF) by introducing Pt species (denoted as Pt-MnCoO/NF), which is standing for excellent bifunctional electrodes.
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