A mixed-ion strategy to achieve carbon nanotube-decorated Co/N-doped hollow carbon hybrids (CNTs-Co/NHC) is developed by precisely controlling the Co2+/Zn2+ molar ratio in the ZIFs-CoxZn1-x precursor. The optimized CNTs-Co/NHC-0.23 catalyst shows outstanding catalytic activity and durability for the oxygen reduction reaction (ORR) and outperformed commercial Pt/C.
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http://dx.doi.org/10.1039/c8cc05959d | DOI Listing |
J Colloid Interface Sci
January 2025
Tianjin International Joint Research Centre of Surface Technology for Energy Storage Materials, College of Physics and Materials Science, Tianjin Normal University, Tianjin 300387 China. Electronic address:
Lithium (Li) metal is considered to be one of the most promising anodes for next-generation high-energy-density batteries owing to its high theoretical capacity and low redox potential. However, the practical application of Li metal anodes has been hindered by the unstable interface and the growth of Li dendrites. Herein, a highly stable surface-patterned Li metal anode has been developed, in which composite nanowires composed of lithium phosphide and copper nanoparticles are riveted within the regular grooves of the Li metal surface.
View Article and Find Full Text PDFLuminescence
August 2024
Engineering Research Center for Eco-Dyeing and Finishing of Textiles, Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, Hangzhou, China.
Most nonconventional luminogens enjoy good water solubility and biocompatibility, showing unique application prospects in fields like biological imaging. Although clustering-triggered emission (CTE) mechanisms have been proposed to explain such emissions, the have not been thoroughly elucidated, which limits their development and application. Here, the photoluminescence properties of carboxymethyl β-cyclodextrin (CM-β-CD) aqueous solution are utilized to further investigate the effects of changes in concentration, in order to elucidate the emission mechanism through cryo-transmission electron microscopy (cryo-TEM), small-angle X-ray scattering (SAXS), molecular interaction analysis, and theoretical calculation.
View Article and Find Full Text PDFEnviron Res
October 2024
School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, 400054, China.
To investigate the inhibitory effects of various transition metal ions on nitrogen removal and their underlying mechanisms, the single and combined effects of Cu Ni and Zn on Heterotrophic nitrification-aerobic denitrification (HN-AD) bacteria Acinetobacter sp. TAC-1 were studied in a batch experiment system. The results revealed that increasing concentrations of Cu and Ni had a detrimental effect on the removal of ammonium nitrogen (NH-N) and total nitrogen (TN).
View Article and Find Full Text PDFJ Pharmacol Toxicol Methods
July 2024
Labcorp Early Development Laboratories Inc., Madison, WI, United States of America.
Introduction: Cardiovascular safety and the risk of developing the potentially fatal ventricular tachyarrhythmia, Torsades de Pointes (TdP), have long been major concerns of drug development. TdP is associated with a delayed ventricular repolarization represented by QT interval prolongation in the electrocardiogram (ECG), typically due to block of the potassium channel encoded by the human ether-a-go-go related gene (hERG). Importantly however, not all drugs that prolong the QT interval are torsadagenic and not all hERG blockers prolong the QT interval.
View Article and Find Full Text PDFChem Sci
May 2024
School of Environment and Material Engineering, Yantai University Yantai 264005 Shandong China
Garnet-type solid-state Li metal batteries (SSLMBs) are viewed as hopeful next-generation batteries due to their high energy density and safety. However, the major obstacle to the development of garnet-type SSLMBs is the lithiophobicity of LiLaZrTaO (LLZTO), resulting in a large interfacial impedance. Herein, a LiI/ZnLi mixed ion/electron conductive buffer layer is constructed at the interface by an reaction of molten Li metal with ZnI film.
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