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Surface Oxygen Vacancies on Copper-Doped Titanium Dioxide for Photocatalytic Nitrate-to-Ammonia Reduction.
J Am Chem Soc
January 2025
Research Center for Solar Energy Chemistry and Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531, Japan.
Photocatalytic transformation of nitrate (NO) in wastewater into ammonia (NH) is a challenge in the detoxification and recycling of limited nitrogen resources. In particular, previously reported photocatalysts cannot promote the reaction using water as an electron donor. Herein, we report that copper-doped titanium dioxide (Cu-TiO) powders, prepared via the sol-gel method and subsequent calcination, promote NO-to-NH reduction in water.
View Article and Find Full Text PDFInterfacial Water Orientation in Neutral Oxygen Catalysis for Reversible Ampere-scale Zinc-air Batteries.
Angew Chem Int Ed Engl
January 2025
Nanjing University of Aeronautics and Astronautics, College of Materials Science and Technology, No. 169 Sheng Tai West Road, Jiangning District, Nanjing, Jiangsu, China, 211106, Nanjing, CHINA.
The neutral oxygen catalysis is an electrochemical reaction of the utmost importance in energy generation, storage application, and chemical synthesis. However, the restricted availability of protons poses a challenge to achieving kinetically favorable oxygen catalytic reactions. Here, we alter the interfacial water orientation by adjusting the Brønsted acidity at the catalyst surface, to break the proton transfer limitation of neutral oxygen electrocatalysis.
View Article and Find Full Text PDFActive Locating Exciton- and Charge-Initialized Degradation in Quantum-Dot Light-Emitting Diodes.
Small
January 2025
Central Research Institute, BOE Technology Group Co. Ltd, Beijing, 100176, China.
For quantum-dot light-emitting diodes (QLED), electrical aging commonly introduces collective aging sources across all layers, making it difficult to isolate the impact of each layer on electroluminescence (EL) degradation. In this work, a layer-selective aging method using active photoexcitation is proposed, in which the photoexcitation wavelength is used to selectively target specific layers for exciton generation, and an electrical bias is applied to induce photocurrent and create charges. An iterative aging-sampling (A-S) procedure is used to link aging conditions to EL degradation.
View Article and Find Full Text PDFIsolated Tin Enhanced CO Coverage-Regulation on SnCu Alloy for Selective CO Electroreduction to C Products.
Small
January 2025
Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, 510632, P. R. China.
Electricity-powered C─C coupling of CO represents an attractive strategy for producing valuable commodity chemicals with renewable energy, but it is still challenging to gain high C selectivity at high current density. Here, a SnCu single-atom alloy (SAA) is reported with isolated Sn atom embedded into the Cu lattice, as efficient ectrocatalyst for CO reduction. The as prepared SnCu-SAA catalyst shows a maximal C Faradaic efficiency of 79.
View Article and Find Full Text PDFReversal of inflammatory reprogramming by vasodilator agents in pulmonary hypertension.
ERJ Open Res
January 2025
Center for Pulmonary Vascular Biology and Medicine, Pittsburgh Heart, Lung and Blood Vascular Medicine Institute, Division of Cardiology, Department of Medicine, University of Pittsburgh School of Medicine and UPMC, Pittsburgh, PA, USA.
Background: Pulmonary arterial hypertension (PAH) is a deadly disease without effective non-invasive diagnostic and prognostic testing. It remains unclear whether vasodilators reverse inflammatory activation, a part of PAH pathogenesis. Single-cell profiling of inflammatory cells in blood could clarify these PAH mechanisms.
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