A5078677061- Catalytic Processes in Materials Science
- Atmospheric chemistry and aerosols
- Advanced Photocatalysis Techniques
- Air Quality and Health Impacts
- Catalysis and Oxidation Reactions
- Gas Sensing Nanomaterials and Sensors
- Air Quality Monitoring and Forecasting
- Industrial Gas Emission Control
- Atmospheric Ozone and Climate
- Atmospheric aerosols and clouds
- TiO2 Photocatalysis and Solar Cells
- Cancer-related molecular mechanisms research
- Nanomaterials for catalytic reactions
- Copper-based nanomaterials and applications
- Electrocatalysts for Energy Conversion
- Vehicle emissions and performance
- Quantum Dots Synthesis And Properties
- MicroRNA in disease regulation
- Metal-Organic Frameworks: Synthesis and Applications
- Layered Double Hydroxides Synthesis and Applications
- Ammonia Synthesis and Nitrogen Reduction
- Circular RNAs in diseases
- Mesoporous Materials and Catalysis
- Nanocluster Synthesis and Applications
- Spine and Intervertebral Disc Pathology
Institute of Urban Environment
2016-2025
Chinese Academy of Sciences
2016-2025
State Key Joint Laboratory of Environment Simulation and Pollution Control
2016-2025
Research Center for Eco-Environmental Sciences
2016-2025
University of Chinese Academy of Sciences
2016-2025
Hebei University
2021-2024
Liaocheng University
2024
Cell Technology (China)
2024
Inner Mongolia Medical University
2016-2023
Medical Architecture (United Kingdom)
2023
Haze in China has been increasing frequency of occurrence as well the area affected region. Here, we report on a new mechanism haze formation, which coexistence with NOx can reduce environmental capacity for SO2, leading to rapid conversion SO2 sulfate because NO2 and have synergistic effect when they react surface mineral dust. Monitoring data from five severe episodes January 2013 Beijing-Tianjin-Hebei regions agreed very laboratory simulation. The combined air pollution motor vehicle...
In this work, graphitic carbon nitride-titanium dioxide (g-C3N4-TiO2) was successfully prepared by a facile calcination route utilizing commercial P25 and melamine as the precursors. The as-prepared g-C3N4/TiO2 photocatalysts were characterized systematically to elucidate their morphological structure physico-chemical properties. photocatalytic performance of g-C3N4-TiO2 composites investigated for removal NOx in air. At optimal g-C3N4 content (∼15 wt%, labeled M400), conversion 27%, which...
Transition metal (cerium and cobalt) doped γ-MnO2 (M-γ-MnO2, where M represents Ce, Co) catalysts were successfully synthesized characterized. Cerium-doped materials showed ozone (O3) conversion of 96% for 40 ppm O3 under relative humidity (RH) 65% space velocity 840 L g–1 h–1 after 6 h at room temperature, which is far superior to the performance Co-γ-MnO2 (55%) (38%) catalysts. Under h–1, over Ce-γ-MnO2 catalyst RH = dry conditions within 96 was 60% 100%, respectively, indicating that it a...
Ammonia (NH3) has potentially harmful effects on human health and recently been found to be an important factor in the formation of haze; thus, its emission control is urgent, especially during haze pollution periods. In this work, two kinds Ag/Al2O3 catalysts with different Al2O3 particle sizes (micro-Al2O3 nano-Al2O3) were prepared tested for selective catalytic oxidation ammonia (NH3-SCO). It was shown that Ag/nano-Al2O3 much more active than Ag/micro-Al2O3 NH3-SCO low-temperature range....
PM2.5 concentrations have decreased remarkably in China recent years, coinciding with a more rapid decrease SO2 and slower NO2 concentrations, while O3 increased. Correlations between key gaseous pollutants were studied to identify linked trends as means of understanding the impacts air pollution control China. In most cities, PM2.5–NO2 correlation coefficients higher than PM2.5–SO2 coefficients, gap tended expand quality improved. Multiple linear regression also indicated that sensitive...
In the removal of volatile organic compounds (VOCs), Co3O4 catalysts with various morphologies are highly efficient due to rich active sites such as Co3+, adsorbed oxygen, and surface lattice oxygen species. It is worthwhile further disclosing crucial roles reaction mechanism these sites. The facile uniform metal–organic framework (MOF) derivation method was selected synthesize different shapes for catalytic oxidation o-xylene: rod-like Co3O4-R exhibited a lower T90% 270 °C, superior...
Abstract Ag/γ-Al 2 O 3 is widely used for catalyzing various reactions, and its performance depends on the valence state, morphology dispersion of Ag species. However, detailed anchoring mechanism species γ-Al remains largely unknown. Herein, we reveal that terminal hydroxyls are responsible The abundant existed nanosized can lead to single-atom silver dispersion, thereby resulting in markedly enhanced than cluster microsized . Density-functional-theory calculations confirm atom mainly...
There are still significant knowledge gaps in understanding the intrusion and retention of exogeneous particles into central nervous system (CNS). Here, we uncovered various fine human cerebrospinal fluids (CSFs) identified ambient environmental or occupational exposure sources these particles, including commonly found (e.g., Fe- Ca-containing ones) other compositions that have not been reported previously (such as malayaite anatase TiO 2 ), by mapping their chemical structural fingerprints....
The Co3O4 spinel is one of the most promising transition metal oxide (TMO) catalysts for volatile organic compound (VOC) treatment. Substituting effects have usually been utilized to improve catalytic performance spinel. In this study, Cu- and Ni-substituted derived from mixed metal-organic frameworks (MMOFs) retained similar structures but exhibited improved reduced o-xylene oxidation, respectively. Physicochemical characterization DFT calculations revealed that Cu Ni substitution into...
Pt/Al2O3 catalysts showing excellent activity and stability have been used in various reactions, including HCHO oxidation. Herein, we prepared Pt–Na/Al2O3 with a Pt content of 0.05 wt % to reveal the key factors determining anchoring as well catalytic mechanism Pt–Na/nano-Al2O3 (denoted Pt–Na/nAl2O3) could completely oxidize CO2 at room temperature, which is lowest oxidation our knowledge. After Na addition, terminal hydroxyl groups HO-μter) on nano-Al2O3 were transformed doubly bridging...
Sulfate is one of the most important aerosols in atmosphere. A new sulfate formation pathway via synergistic reactions between SO(2) and NO(2) on mineral oxides was proposed. The heterogeneous CaO, α-Fe(2)O(3), ZnO, MgO, α-Al(2)O(3), TiO(2), SiO(2) were investigated by situ Diffuse Reflectance Infrared Fourier Transform Spectroscopy (in DRIFTS) at ambient temperature. Formation from adsorbed promoted coexisting NO(2), while surface N(2)O(4) observed as crucial oxidant for oxidation sulfite....
The effects of Mn2+ precursors on the structure and ozone decomposition activity cryptomelane-type manganese oxide (OMS-2) catalysts were investigated under high-humidity conditions. OMS-2 synthesized using a hydrothermal approach. Characterization was carried out X-ray diffraction (XRD), scanning electron microscopy (SEM), N2 physical adsorption, Raman spectroscopy, absorption fine (XAFS), H2 temperature-programmed reduction (H2-TPR), inductively coupled plasma (ICP) spectroscopy. OMS-2-Ac...
Oxygen-deficient TiO2 was prepared with a low-temperature method and utilized in photocatalytic removal of gaseous NO at the 400 ppbv level air under visible light (420 nm < λ 700 nm) irradiation. Catalysts synthesized 200 °C (TiO2-200) exhibited highest ability to remove gas A higher oxidation for NO2 NO3– leads conversion NOx on TiO2-200. The relationship between physicochemical properties performance as-prepared catalyst is discussed. large surface area TiO2-200 can provide more active...
Manganese oxides are prominent candidates for the catalytic oxidation of volatile organic compounds (VOCs) or ambient decomposition O3 individually. Here, we compared various preparation methods to create a defect-enriched Ag-MnOx nanocomposite that exhibits remarkably multifunctional activity in VOC combustion and ozone decomposition. Ag+ ions were well-dispersed microtunnels Ag-MnOx-H via hydrothermal replacement original K+ ions; this catalyst's benzene efficiency (T90% = 216 °C at space...