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Native Defect-Dependent Ultrafast Carrier Dynamics in p-Type Dopable Wide-Bandgap NiO.
J Phys Chem Lett
December 2024
School of Electronic Science and Engineering, Nanjing University, Nanjing, Jiangsu 210023, China.
NiO is a wide-bandgap p-type metal oxide that has extensive applications in optoelectronics and photocatalysts. Understanding the carrier dynamics in p-type NiO is pivotal for optimizing device performance, yet they remain largely unexplored. In this study, we employed femtosecond transient absorption spectroscopy to delve into the dynamics of photogenerated carriers in NiO films containing distinct prominent native defects: undoped NiO with oxygen vacancies () and O-rich NiO (denoted as NiO) with nickel vacancies ().
View Article and Find Full Text PDFMetallic 1T Phase MoS Nanosheets Covalently Functionalized with BBD Molecules for Enhanced Supercapacitor Performances.
ACS Appl Mater Interfaces
December 2024
Department of Materials Science and Engineering, and State Key Laboratory of Marine Pollution, and Center of Super-Diamond and Advanced Films, City University of Hong Kong, Hong Kong S.A.R. 999077, China.
Metallic 1T phase molybdenum disulfide (MoS) is among the most promising electrode materials for supercapacitors, but its capacitance and cyclability remain to be improved to meet the constantly increasing energy storage needs in portable electronics. In this study, we present a strategy, covalent functionalization, which achieves the improvement of capacitance of metallic 1T phase MoS. Covalently functionalized by the modifier 4-bromobenzenediazonium tetrafluoroborate, the metallic MoS membrane exhibits increased interlayer spacing, slightly curled layered architecture, enhanced charge transfer, and improved adsorption capabilities toward electrolyte molecules and ions.
View Article and Find Full Text PDFEffects of 5-Wk Repeated Sprint Training in Hypoxia on Global Inspiratory and Core Muscle Functions.
J Sports Sci Med
December 2024
Faculty of Education, University of Macau, Macao S.A.R, China.
Repeated-sprint training in hypoxia (RSH) has been shown to boost team-sport players' repeated-sprint ability (RSA). Whether players' global inspiratory muscle (IM) and core muscle (CM) functions would be altered concomitantly with RSH was not reported. This study was designed to compare the concomitant alternations in players' RSA and their IM and CM functions during a team-sport-specific intermittent exercise protocol (IEP) before and after the intervention.
View Article and Find Full Text PDFExploring urban coastal areas: Investigating the urban coastal areas as a reservoirs of antibiotic resistance Genes★.
Mar Environ Res
November 2024
Department of Applied Science, School of Science and Technology, Hong Kong Metropolitan University, Hong Kong Special Administrative Region of China. Electronic address:
Antibiotic resistance genes (ARGs) have long served as adaptive defensive mechanisms among bacteria, enabling their survival and propagation in challenging environments. The consequences of inefficient wastewater treatment have culminated the emergence of untreatable and lethal extensively drug-resistant. To understand the relationship between wastewater effluent and marine ecosystems, we conducted a study to monitor the diversity and prevalence of common ARGs in Hong Kong's urban coastal areas at different seasons.
View Article and Find Full Text PDFDesigning Zwitterionic Bottlebrush Polymers to Enable Long-Cycling Quasi-Solid-State Lithium Metal Batteries.
Angew Chem Int Ed Engl
December 2024
Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong S.A.R., 999077, P. R. China.
Ionogel polymer electrolyte (IPE), incorporating ionic liquid (IL) within a polymer matrix, presents a promising avenue for safe quasi-solid-state lithium metal batteries. However, sluggish Li kinetics, resulting from the formation of [Li(anion)] clusters and the occupation of Li transport sites by organic cations, limit their practical applications. In this study, we have developed zwitterionic bottlebrush polymers-based IPE with promoted Li conduction by employing poly(sulfobetaine methacrylate)-grafted poly(vinylidene fluoride-co-chlorotrifluoroethylene) (PVC-g-PSBMA) bottlebrushes as matrices of IL.
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