A5100784662- Atmospheric chemistry and aerosols
- Air Quality and Health Impacts
- Atmospheric Ozone and Climate
- Air Quality Monitoring and Forecasting
- Atmospheric aerosols and clouds
- Electrocatalysts for Energy Conversion
- Atmospheric and Environmental Gas Dynamics
- Marine and coastal plant biology
- Geophysics and Gravity Measurements
- Advanced Chemical Sensor Technologies
- Advanced Photocatalysis Techniques
- Toxic Organic Pollutants Impact
- Water Treatment and Disinfection
- Seaweed-derived Bioactive Compounds
- Marine Biology and Ecology Research
- Advanced Graph Neural Networks
- Bamboo properties and applications
- Cloud Computing and Resource Management
- CO2 Reduction Techniques and Catalysts
- Geochemistry and Geologic Mapping
- Metabolomics and Mass Spectrometry Studies
- Quantum optics and atomic interactions
- Advancements in Battery Materials
- Ammonia Synthesis and Nitrogen Reduction
- Orthodontics and Dentofacial Orthopedics
Hong Kong University of Science and Technology
2025
University of Hong Kong
2025
Stony Brook University
2020-2024
Institute of Earth Environment
2016-2024
Chinese Academy of Sciences
2016-2024
Shandong University
2012-2024
Wenzhou University
2021-2024
East China Normal University
2024
Shanghai Institute of Geological Survey
2023-2024
Collaborative Innovation Center of Chemistry for Energy Materials
2023
Exploring efficient and economical electrocatalysts for hydrogen evolution reaction is of great significance water splitting on an industrial scale. Tungsten oxide, WO3, has been long expected to be a promising non-precious-metal electrocatalyst production. However, the poor intrinsic activity this material hampers its development. Herein, we design highly via introducing oxygen vacancies into WO3 nanosheets. Our first-principles calculations demonstrate that gap states introduced by O make...
Abstract. Proton-transfer-reaction time-of-flight mass spectrometry (PTR-ToF-MS) is a technique commonly used to measure ambient volatile organic compounds (VOCs) in urban, rural, and remote environments. PTR-ToF-MS known produce artifacts from ion fragmentation, which complicates the interpretation quantification of key atmospheric VOCs. This study evaluates extent fragmentation other ionization processes impact urban measurements ions typically assigned isoprene (m/z 69, C5H8H+),...
The development of highly efficient oxygen-evolving catalysts compatible with powerful proton-exchange-membrane-based electrolyzers in acid environments is prime importance for sustainable hydrogen production. In this field, understanding the role electronic structure on catalytic activity essential but still lacking. Herein, a family pyrochlore oxides R2 Ir2 O7 (R = rare earth ions) reported as acidic superior-specific activities. More importantly, it found that intrinsic material...
For single-crystal photocatalysts, selective deposition of noble metals as electron cocatalysts has been demonstrated to be an effective method improve their photocatalytic performance. However, the effect location on performance photocatalysts not really revealed, because can only selectively deposited electron-enrichment facets and cannot modified hole-enrichment due absence methods. In this study, a photosensitization-deposition strategy, new method, developed deposit Ag nanoparticles...
Abstract. Atmospheric measurements showed rapid sulfate formation during severe haze episodes in China, with fine particulate matter (PM) consisting of a multi-component mixture that is dominated by organic species. Several recent studies using the thermodynamic model estimated particle acidity and production rate, treating PM exclusively as inorganic salts ammonium neglecting effects compounds. Noticeably, pH rate pollution periods China were highly conflicting among previous studies. Here...
Abstract. To investigate the characteristics of atmospheric brown carbon (BrC) in semiarid region East Asia, PM2.5 and size-resolved particles urban atmosphere Xi'an, inland China, during winter summer 2017 were collected analyzed for optical properties chemical compositions. Methanol extracts (MeOH extracts) more light-absorbing than water (H2O wavelength 300–600 nm well correlated with nitrophenols, polycyclic aromatic hydrocarbons (PAHs) oxygenated PAHs (r > 0.78). The light...
Electrosynthesis of valuable chemicals from carbon dioxide (CO2) or monoxide (CO) offers a promising strategy for the storage renewable electricity and at same time reduces emission. However, catalyst's activity selectivity need significant improvements, exact mechanism reaction is still elusive. Herein, we report selective electrochemical reduction CO to acetate on an amino functionalized Cu surface (Cu@NH2) derived in situ electroreduction copper ammonia chloride complexes. At potential...
Air quality policies have made substantial gains by reducing pollutant emissions from the transportation sector. In March 2020, New York City's activities were severely curtailed in response to COVID-19 pandemic, resulting 60–90% reductions human activity. We continuously measured major volatile organic compounds (VOCs) during January–April 2020 and 2021 Manhattan. Concentrations of many VOCs decreased significantly shutdown with variations daily patterns reflective activity perturbations, a...
To evaluate, using multislice computed tomography (MSCT), the morphologic changes in upper airway after large incisor retraction adult bimaxillary protrusion patients.Thirty patients with had four first premolars extracted, and then miniscrews were placed to provide anchorage. A CT scan was performed before again posttreatment. Three-dimensional (3D) reconstruction of pre- (T1) post- (T2) data used assess for morphological airway. paired t-test compare from T1 T2. The relationship among...
Abstract Isoprene is the most abundant non-methane volatile organic compound (VOC) and largest contributor to secondary aerosol (SOA) burden on a global scale. In order examine influence of high concentrations anthropogenic pollutants isoprene-derived SOA (SOA i ) formation, summertime PM 2.5 filter samples were collected with three-hour sampling interval at rural site in North China Plain (NCP), determined for tracers other chemical species. RO 2 +NO pathway derived 2-methylglyceric acid...
Abstract. Molecular distributions and stable carbon isotopic (δ13C values) compositions of dicarboxylic acids related secondary organic aerosols (SOA) in PM2.5 collected on a day/night basis at the summit Mt. Tai (1534 m a.s.l.) summer 2016 were analyzed to investigate sources photochemical aging process forested highland region North China Plain. The molecular SOA are characterized by dominance oxalic acid (C2), followed malonic (C3), succinic (C4) azelaic (C9) acids. concentration ratios...
In article number 1805104, Shiming Zhou, Jie Zeng, and co-workers develop pyrochlore-type iridate oxides R2Ir2O7 (R = rare-earth-metal ions) as highly active stable oxygen evolution reaction (OER) catalysts for acidic water oxidation, overwhelmingly superior to the benchmark IrO2 nanoparticles. The increase of ionic radius R species strengthens hybridization between Ir 5d O 2p orbitals, which is responsible high OER activity.
Abstract. Proton-transfer-reaction time-of-flight mass spectrometry (PTR-ToF-MS) is a technique commonly used to measure ambient volatile organic compounds (VOCs) in urban, rural, and remote environments. PTR-ToF-MS known produce artifacts from ion fragmentation, which complicates the interpretation quantification of key atmospheric VOCs. This study evaluates extent fragmentation other ionization processes impacts urban measurements ions typically assigned isoprene (m/z 69, C5H8H+),...
The reduction reaction of<italic>p</italic>-nitrophenol was catalyzed and monitored using the fluorescence of Cu-doped CDs.
The obstacle for efficient electrochemical water splitting lies in the kinetically sluggish oxygen evolution reaction. Despite various efforts that have been made to understand and tune active sites reaction, an insight into configurations of from electronic perspective is still lacking. Here, we report atomic doping strategy break Oh symmetry CoO6 octahedron LiCoO2. specific activity La-doped LiCoO2 was 3.14 mA cm–2 at overpotential 0.35 V, which 8.3 times higher than pristine with a value...
Abstract Developing bifunctional catalysts for both hydrogen and oxygen evolution reactions is a promising approach to the practical implementation of electrocatalytic water splitting. However, most reported are only applicable alkaline electrolyzer, although few effective in acidic or neutral media that appeals more industrial applications. Here, lithium‐intercalated iridium diselenide (Li‐IrSe 2 ) developed outperformed other toward overall splitting environments. Li intercalation...
Overproduction of reactive oxygen species (ROS) induced by atmospheric particles and subsequent inflammatory responses are considered as one the most important pathological mechanisms with regard to adverse effects air pollution exposure. In this study, fine particulate matter (PM2.5) samples were collected at a rural site in Guanzhong Basin, Northwest China, both summer (August 3–23, 2016) winter (January 5–February 1, 2017). Then, human bronchial epithelial BEAS-2B cells exposed PM2.5,...