A5101599448- Catalytic Processes in Materials Science
- Luminescence Properties of Advanced Materials
- Electromagnetic wave absorption materials
- Advanced Antenna and Metasurface Technologies
- Advanced Electron Microscopy Techniques and Applications
- Mesoporous Materials and Catalysis
- Metamaterials and Metasurfaces Applications
- Photochromic and Fluorescence Chemistry
- Laser-Matter Interactions and Applications
- Porphyrin and Phthalocyanine Chemistry
- Photoreceptor and optogenetics research
- Advanced Chemical Physics Studies
- Photochemistry and Electron Transfer Studies
- Magnetism in coordination complexes
- Ammonia Synthesis and Nitrogen Reduction
- Inorganic Fluorides and Related Compounds
- Radiation Detection and Scintillator Technologies
- Electrohydrodynamics and Fluid Dynamics
- Analytical Chemistry and Sensors
- Electrospun Nanofibers in Biomedical Applications
- Nanomaterials for catalytic reactions
- Electrocatalysts for Energy Conversion
- Electron Spin Resonance Studies
- Spectroscopy and Quantum Chemical Studies
- Ga2O3 and related materials
Shandong Academy of Sciences
2025
Qilu University of Technology
2025
Jilin University
2024
Tencent (China)
2024
Wenzhou University
2021-2023
State Key Joint Laboratory of Environment Simulation and Pollution Control
2021-2023
Chinese Academy of Sciences
2021-2023
University of Chinese Academy of Sciences
2021-2023
Research Center for Eco-Environmental Sciences
2021-2023
Materials Science & Engineering
2021
Random composites with nickel networks hosted randomly in porous alumina are proposed to realize double negative materials. The random composite for DNMs (RC-DNMs) can be prepared by typical processing of material, which makes it possible explore new and potential applications, feasibly tune their electromagnetic parameters controlling composition microstructure. Hopefully, various RC-DNMs improved performance will the future. Detailed facts importance specialist readers published as...
CeO2 has attracted much attention in the field of selective catalytic reduction NO with NH3 (NH3-SCR). However, poor low-temperature activity and a narrow operation window restrict industrial application Ce-based oxide catalysts. Herein, NH3-SCR catalysts was dramatically improved by Mn doping, mechanism elucidated at atomic level experimental measurements density functional theory calculations. We found that addition significantly promoted formation surface oxygen vacancies. The vacancies...
High bunch charge, femtosecond, electron pulses were generated using a 95 kV gun with an S-band RF rebunching cavity.Laser ponderomotive scattering in counter-propagating beam geometry is shown to provide high sensitivity the prerequisite spatial and temporal resolution fully characterize, situ, both profile of time timing jitter.With current parameters, we determined Instrument Response Function (IRF) 430 fs FWHM.The overall performance our system illustrated through high-quality...
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Particulate matter (PM) and water pollution have posed serious hazards to human health. Nanofiber membranes (NFMs) emerged as promising candidates for the elimination of PMs separation oil-water mixtures. In this study, a polyvinylidene difluoride (PVDF)-based nanofiber membrane with an average diameter approximately 150 nm was prepared via double-nozzle electrospinning technology, demonstrating high-efficiency PM filtration separation. The finer fiber not only enhances efficiency but also...
The cyclization reaction of the photochromic diarylethene derivative 1,2-bis(2,4-dimethyl-5-phenyl-3-thienyl)perfluorocyclopentene was studied in its single crystal phase with femtosecond transient absorption spectroscopy. measurements were performed a robust acquisition scheme that explicitly exploits photoreversibility molecular system and monitors reversibility conditions. crystalline demonstrated 3 × 10(4) repeatable cycles before significant degradation observed. Immediately following...
Recent advances in high-intensity electron and X-ray pulsed sources now make it possible to directly observe atomic motions as they occur barrier-crossing processes. These rare events require the structural dynamics be triggered by femtosecond excitation pulses that prepare system above barrier or access new potential energy surfaces drive changes. In general, sampling process modifies such probes should ideally have sufficient intensity fully resolve structures near single-shot limit for a...
The photoinduced ring-closing reaction in diarylethene, which serves as a model system for understanding reactive crossings through conical intersections, was directly observed with atomic resolution using femtosecond electron diffraction. Complementary ab initio calculations were also performed. Immediately following photoexcitation, subpicosecond structural changes associated the formation of an open-ring excited-state intermediate resolved. key motion is rotation thiophene rings,...
A comparative study was performed to investigate the NH3-selective catalytic reduction (SCR) reaction activity of Cu-SSZ-13 zeolites having Si/Al ratios (SARs) 5, 18, and 30. Remarkably, zeolite catalysts exhibited completely opposite behaviors as a function SAR under standard SCR (SSCR) fast (FSCR) atmospheres. Under SSCR conditions, NOx conversion increased expected with decreasing SAR. FSCR however, decreased decreased, contrary expectations. In this study, based on characterization by...
Commercial vanadium oxide catalysts exhibit high efficiency for the selective catalytic reduction (SCR) of NO with NH3, especially in presence NO2 (i.e., occurrence fast NH3–SCR). The high-activity sites and their working principle NH3–SCR reaction, however, remain elusive. Here, by combining situ spectroscopy, isotopic labeling experiments, density functional theory (DFT) calculations, we demonstrate that polymeric vanadyl species act as main active SCR reaction because coupling effect...
For conventional metal/ceramic composites, we report an interesting negative permittivity behavior, which was usually observed in artificial metamaterials. The Fe/Al 2 O 3 composites with different Fe volume contents ranging from 10% to 40% were prepared through hot‐pressing sintering. impedance and dielectric properties of the high frequency range present a distinct dependence on composition, is obtained when content exceeds 20 vol%. experimental results above percolation threshold are good...
With the rapid development of Artificial Intelligence Generated Content (AIGC) technology, education is undergoing profound changes. AIGC significantly promotes inclusiveness, equity and quality by providing personalised learning content intelligent instructional support to tailor experience for students, which aligns with United Nations 2030 Sustainable Development Goals (SDG4) requirements on sustainability education. However, despite great potential in education, its practical application...
Highly fluorescent and copper(II)-responsive periodic mesoporous organosilicas (TH-PMOs) were successfully obtained by using a (tetraylnitrilomethylidyne–hexaphenyl (TH))-derived tetrasiloxane (TH-Si4) as the organosilica precursor. The TH unit was embedded within framework of PMOs four silyl groups without forming associated species, high fluorescence quantum yields achieved even for prepared from 100% organosilane optical studies indicated that intramolecular rotation restricted TH-PMOs,...
Rhodamine-6G Schiff-base bridged periodic mesoporous organosilicas (RSPMOs) were successfully synthesized by co-condensation of rhodamine derivative-bridged organosilanes and tetraethoxysilane (TEOS), using the ionic liquid 1-hexadecyl-3-methylimidazolium bromide (C16mimBr) as a structure-directing agent. The formation mechanism ordered hybrid materials with crystal-like pore walls was mediated self-assembly both long-chain new organosilane precursors. As molar fraction precursors above 1%,...
Metal aerogels (MAs) are emerging porous materials displaying unprecedented potential in catalysis, sensing, plasmonic technologies, etc. However, the lack of efficient regulation their nano-building blocks (NBBs) remains a big hurdle that hampers in-depth investigation and performance enhancement. Here, by harmonizing composition ligand effects, Pt- Bi-based single- bimetallic bearing NBBs controlled dimensions shapes obtained facilely tuning metal precursors applied ligands. Particularly,...
In article number 1906950, Dongyuan Zhao, Biao Kong, and co-workers provide a comprehensive overview of the fabrication strategies properties sensing mechanism optical heterostructures in mesoporous silica materials. The structure, properties, functional methods these materials are introduced. addition, advantages pioneering studies on terms applications described.