Spinel oxides have attracted much attention for electrocatalytic water oxidation. Specially, the Mn-based spinel structures merits fundamental investigation, as Mn is involved in water oxidation in natural photosynthesis. Herein, Al-doped MnO spinel electrocatalyst was prepared for water oxidation. The Al cations selectively occupy the tetrahedral sites of MnO spinel structure, leaving Mn(III) at the catalytically critical octahedral sites. The substitution of Al regulated the electronic structure of MnO, induced lattice distortion and produced higher concentration of oxygen vacancy to promote the water oxidation performance.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/chem.202403720 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Unlocking the Key to Photocatalytic Hydrogen Production Using Electronic Mediators for Z-Scheme Water Splitting.
J Am Chem Soc
January 2025
State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, PR China.
A prevalent challenge in particulate photocatalytic water splitting lies in the fact that while numerous photocatalysts exhibit outstanding hydrogen evolution reaction (HER) activity in organic sacrificial reagents, their performance diminishes markedly in a Z-scheme water splitting system using electronic mediators. This underlying reason remains undefined, posing a long-standing issue in photocatalytic water splitting. Herein, we unveiled that the primary reason for the decreased HER activity in electronic mediators is due to the strong adsorption of shuttle ions on cocatalyst surfaces, which inhibits the initial proton reduction and results in a severe backward reaction of the oxidized shuttle ions.
View Article and Find Full Text PDFUnveiling of Hydrogen Spillover Mechanisms on Tungsten Oxide Surfaces.
J Am Chem Soc
January 2025
Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
Hydrogen spillover is an important process in catalytic hydrogenation reactions, facilitating H activation and modulating surface chemistry of reducible oxide catalysts. This study focuses on the unveiling of platinum-induced hydrogen spillover on monoclinic tungsten trioxide (γ-WO), employing ambient pressure X-ray photoelectron spectroscopy, density functional theory calculations and microkinetic modeling to investigate the dynamic evolution of surface states at varied temperatures. At room temperature, hydrogen spillover results in the formation of W and hydrogen intermediates (hydroxyl species and adsorbed water), facilitated by Pt metal clusters.
View Article and Find Full Text PDFEffect of Ph on the Physicochemical Properties of a Cassava Peel Starch Biopolymer.
Cell Physiol Biochem
January 2025
Carrera de Agroindustria, Escuela Superior Politécnica Agropecuaria de Manabí Manuel Félix López, ESPAM-MFL, Calceta. 130250, Ecuador.
Background/aims: This study investigates how pH levels affect the characteristics of biopolymer films manufactured from cassava peel starch. Cassava peel starch's abundance and biodegradability make it a promising candidate for sustainable packaging. The study seeks to improve film qualities such as thickness, density, moisture content, solubility, and optical properties by altering pH levels.
View Article and Find Full Text PDFPlasma-Activated Water/Ultrasound as a Green Method to Modify Wood Fiber By-Product: Insights of Their Mechanical Performance in Polylactic Acid-Based Biofilms.
Biopolymers
March 2025
Centro de Investigación en Química Aplicada, Saltillo, Coahuila, Mexico.
Exploring new ecological and simultaneous processes to modify wood fibers (WF) by-products is a required pathway toward circular economy and sustainability. Thus, plasma-activated water (PAW) and ultrasound (U) were employed as alternative methods to modify WF in a continuous process. Such treatments promoted the etching and cavities on the WF surface that destabilized the hydrogen bonds of the hemicellulose and lignin molecules, increasing the cellulose fraction.
View Article and Find Full Text PDFTwo TAL Effectors of Xanthomonas citri pv. malvacearum Induce Water Soaking by Activating GhSWEET14 Genes in Cotton.
Mol Plant Pathol
January 2025
Shanghai Collaborative Innovation Center of Agri-Seeds/State Key Laboratory of Microbial Metabolism, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China.
Bacterial blight of cotton (BBC) caused by Xanthomonas citri pv. malvacearum (Xcm) is an important and destructive disease affecting cotton plants. Transcription activator-like effectors (TALEs) released by the pathogen regulate cotton resistance to the susceptibility.
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!