A5100724813- Catalytic Processes in Materials Science
- Nanocomposite Films for Food Packaging
- Membrane Separation Technologies
- Advanced Chemical Physics Studies
- Quantum Dots Synthesis And Properties
- Gold and Silver Nanoparticles Synthesis and Applications
- Advanced Photocatalysis Techniques
- 2D Materials and Applications
- Adsorption and biosorption for pollutant removal
- Solar-Powered Water Purification Methods
- Conducting polymers and applications
- Semiconductor materials and interfaces
- Electrospun Nanofibers in Biomedical Applications
- Nanomaterials for catalytic reactions
- Boron and Carbon Nanomaterials Research
- Magnesium Alloys: Properties and Applications
- Chemical Synthesis and Reactions
- Graphene and Nanomaterials Applications
- Ammonia Synthesis and Nitrogen Reduction
- Nanocluster Synthesis and Applications
- Thermal properties of materials
- Corrosion Behavior and Inhibition
- MXene and MAX Phase Materials
- Synthesis and pharmacology of benzodiazepine derivatives
- Extracellular vesicles in disease
Dalian University of Technology
2024-2025
Dalian University
2025
Zhejiang University of Technology
2021-2024
Shanghai University
2024
China Construction Eighth Engineering Division (China)
2024
Wuhan University of Science and Technology
2007-2023
Hebei University of Technology
2023
Hubei University of Technology
2019
University of California, Berkeley
2008-2009
Lawrence Berkeley National Laboratory
2008-2009
Heterogeneous catalysts that contain bimetallic nanoparticles may undergo segregation of the metals, driven by oxidizing and reducing environments. The structure composition core-shell Rh(0.5)Pd(0.5) Pt(0.5)Pd(0.5) nanoparticle were studied in situ, during oxidizing, reducing, catalytic reactions involving NO, O2, CO, H2 x-ray photoelectron spectroscopy at near-ambient pressure. underwent dramatic reversible changes chemical state response to or conditions. In contrast, no substantial Pd Pt...
Designing favorable structures of active sites and clarifying the structure–activity relationship are important to narrow large activity gap between Cu-based noble-metal-based catalytic systems for vinyl chloride production. Herein, we report a facile controllable thermal method fabricating platform Cu single-atom catalysts ranging from standard no-vacancy-defect CuCl3–N vacancy-defect CuCl2V–N ("V" site) CuN4. The gradually released C–Cl derivatives promote generation under elevated...
The atomic-scale restructuring of hex-Pt(100) induced by carbon monoxide with a wide pressure range was studied newly designed chamber-in-chamber high-pressure STM and theoretical calculations. Both experimental DFT calculation results show that CO molecules are bound to Pt nanoclusters through tilted on-top configuration separation ∼3.7−4.1 Å. phenomenon metal catalyst surfaces adsorption and, in particular, the formation small metallic clusters suggests importance studying structures under...
Monolayer MoS
Abstract The doping level of 2,2′,7,7′‐tetrakis[N,N‐di(4‐methoxyphenyl)amino]‐9,9′‐spirobifluorene (Spiro‐OMeTAD), a commonly used hole transport layer in perovskite solar cells (PSCs), is crucial for its electrical conductivity and the final photovoltaic performance. routine oxygen‐oxidation strategy falls short achieving high‐level due to sparsity random distribution dopants within solid Spiro‐OMeTAD film. Here use carbon nanohorns (CNH) as promoter significantly enhance reported. unique...
Water-soluble chitosan (WCS) with five different molecular weights was synthesized by N-acetylation of acetic anhydride. Degree deacetylation sample determined potentiometric titration. The structure WCS characterized FTIR, XRD, and gel permeation chromatography. critical aggregation concentration (cac) self-aggregation measuring the fluorescence intensity pyrene as a fluorescent probe surface tension. With decrease weight-average weight (M(w)), cac values WCSs in aqueous media were 0.48,...
Abstract The polyacrylonitrile (PAN) nanofiber membrane prepared by the electrospinning technology was used as matrix, and β-cyclodextrin (β-CD) introduced into it to synthesize composite membrane. Taking methylene blue object, adsorption performance of membranes for dyes in aqueous solution studied. structure, morphology, specific surface area were characterized using FTIR, SEM, BET, XRD, EDS. Meantime, equilibrium also explored. After being modified cyclodextrin, a large number cavity...
We experimentally demonstrated that pyridine/Si(111)-7 x 7 can act as an electron donor/acceptor pair a result of the charge transfer from electron-rich N atom pyridine to electron-deficient adatom Si surface, evidenced by upshift 1.8 eV (state A) for N(1s) core level upon formation datively bonded complex compared physisorbed molecules. Another state (B) whose binding energy downshifts 1.2 was assigned adduct through Si-C and Si-N covalent linkages, formed via [4 + 2]-like addition...
Molybdenum disulfide (MoS2) has emerged as a promising photothermal material for solar desalination. However, its limitation in integrating with organic substances constrains application because of the lack functional groups on surface. Here, this work presents functionalization approach to introduce three different (-COOH -OH -NH2) surface MoS2 by combining them S vacancies. Subsequently, functionalized was coated polyvinyl alcohol-modified polyurethane sponge fabricate MoS2-based...
With the development of green chemical industry and continuous improvement environmental awareness, application various catalysts in protection has been widely concerned. As a catalyst, molecular sieve catalyst superior performance, which is mainly reflected its ability to improve selectivity reaction products, can be reused, good thermal stability strong adaptability. This paper introduces types, history, synthesis technology zeolite catalysts, due science technology, large number new...
Renewable electrospun PAN/HAP membranes with a nanofiber–nanoparticle structure were fabricated for the efficient removal of lead ions from aqueous solutions.
Abstract Partially N ‐acetylated chitosan was hydrolyzed by the cheap, commercially available, and efficient cellulase. The products, with different molecular weight, were comparatively investigated GPC, FT‐IR, XRD, NMR. results show that decrease of weight led to transformation crystal structure increase water‐solubility, but chemical structures residues not modified. Superoxide anion radical hydroxyl quenching assay used for evaluation free scavenging activity cellulase‐treated in vitro ....
The investigation of allyl cyanide adsorption on $\mathrm{Si}(111)\ensuremath{-}7\ifmmode\times\else\texttimes\fi{}7$ using high-resolution electron-energy-loss spectroscopy (HREELS), x-ray photoelectron (XPS), and ultraviolet (UPS) reveals a tetra-\ensuremath{\sigma} binding mode through two $[2+2]$-like cycloaddition reactions. HREELS spectra chemisorbed monolayer show the absence $\mathrm{C}=\mathrm{C},$ $\mathrm{C}\ensuremath{\equiv}\mathrm{N},$ $\mathrm{C}{(sp}^{2})---\mathrm{H}$...
Amberlyst-21, a kind of well-known and cheap polymeric material, was treated with ytterbium perfluorooctanesulfonate [Yb(OPf)3] giving reagent loading 1.34 (wt %). The polymer-supported fluorous catalyses the highly efficient synthesis 1,5-benzodiazepine derivatives. catalyst can be recovered by simple filtration under fluorous-solvent-free conditions used again without significant loss catalytic activity. Keywords: Ytterbium perfluorooctanesulfonate, Amberlyst A-21, polymer supported...
Abstract Plasma electrolytic oxidation (PEO) is an effective protection technique developed for light alloys, such as aluminum, magnesium and titanium alloys. PEO electrolytes often contain fluorides, yet their functionality not well understood during the oxide layer formation growth. In present work, we tracked fluoride evolvement contained in ceramic protective formed on AZ91 It found that a rich with 1–2 μ m thickness at coating/substrate interface nanocrystalline MgO islands size of...