A5016604578- Advanced Photocatalysis Techniques
- Copper-based nanomaterials and applications
- ZnO doping and properties
- Electromagnetic wave absorption materials
- Advanced Antenna and Metasurface Technologies
- Quantum Dots Synthesis And Properties
- Gas Sensing Nanomaterials and Sensors
- X-ray Diffraction in Crystallography
- Gold and Silver Nanoparticles Synthesis and Applications
- Iron-based superconductors research
- Chalcogenide Semiconductor Thin Films
- Rare-earth and actinide compounds
- Advanced Thermoelectric Materials and Devices
- TiO2 Photocatalysis and Solar Cells
- Metamaterials and Metasurfaces Applications
- Advanced Nanomaterials in Catalysis
- Advancements in Battery Materials
- Ga2O3 and related materials
- Graphene research and applications
- Physics of Superconductivity and Magnetism
- Electron and X-Ray Spectroscopy Techniques
- Superconductivity in MgB2 and Alloys
- Advanced ceramic materials synthesis
- Electronic and Structural Properties of Oxides
- Machine Learning in Materials Science
Minzu University of China
2015-2024
Ningbo University
2015-2016
Institute of Physics
2009-2014
Chinese Academy of Sciences
2007-2014
Czech Academy of Sciences, Institute of Physics
2012
Chemical graphitized r-GOs, as the thinnest and lightest material in carbon family, exhibit high-efficiency electromagnetic interference (EMI) shielding at elevated temperature, attributed to cooperation of dipole polarization hopping conductivity. The r-GO composites show different temperature-dependent imaginary permittivities EMI performances with changing mass ratio.
Light weight and high efficiency are two key factors for microwave absorption materials. In particular, it is extremely important that materials meet the harsh requirements of thermal environments. this work, multi-wall carbon nanotubes decorated with ZnO nanocrystals (ZnO@MWCNTs) were synthesized by a mild solution-process synthesis. The high-temperature dielectric properties SiO2-based composites loaded ZnO@MWCNTs (ZnO@MWCNTs/SiO2) investigated in 8.2–12.4 GHz 373–673 K temperature range....
We fabricated NiO nanorings on SiC, a novel hierarchical architecture, by facile two-step method. The dielectric properties depend temperature and frequency in the range from 373 to 773 K X band. imaginary part loss tangent increase more than four times three with increasing temperature, respectively. architecture demonstrates multirelaxation possesses high-efficient absorption. reflection exceeds −40 dB bandwidth covers 85% of band (approximately −20 dB). synergistic effect between...
r-GOs, as the thinnest and most lightweight materials of carbon world, exhibit highly efficient microwave attenuation performances.
Ideal electromagnetic attenuation material should not only shield the interference but also need strong absorption. Lightweight microwave absorber with thermal stability and high efficiency is a highly sought-after goal of researchers. Tuning absorption to meet harsh requirements environments has been great challenge. Here, grape-like Fe3O4-multiwalled carbon nanotubes (MWCNTs) are synthesized, which have unique multiscale-assembled morphology, relatively uniform size, good crystallinity,...
We fabricated the nickel chains by a facile wet chemical method. The morphology of were tailored adjusting amount PVP during synthesis process. Both complex permittivity and permeability three-dimensional (3D) nets constructed present strong dependences on temperature in frequency range 8.2-12.4 GHz 323-573 K. peaks imaginary component mainly derive from interfacial polarizations resonances, devoting to dielectric magnetic loss, respectively. effect both magnetism contribute enhancing...
Enhancement of the dielectric properties SiC is achieved by growing NiO nanorings on surface SiC. The assembled with exhibits highly enhanced and strong microwave absorption due to hopping charge induced nanorings.
Heterogeneous p-n junction CdS/Cu2O nanorod arrays have been fabricated by using a facile successive ionic-layer adsorption and reaction process to grow Cu2O nanoparticles on the surface of ordered CdS arrays. The heterogeneous exhibit superior photoelectrochemical performance for hydrogen (H2) generation high stability under visible-light irradiation. highest photocurrent density achieved array photoelectrode is 4.2 mA cm-2 in sacrificial Na2S Na2SO3 mixture electrolyte solution at 0 V...
Lanthanide-doped lead halide perovskites have demonstrated great potential for photoelectric applications. However, there is a long-standing controversy about the existence of lanthanide ions, e.g., whether doping Ln 3+ successful or not; substituting sites in are unclear. We directly identify doped Yb CsPbCl 3 by using state-of-the-art transmission electron microscopy and three-dimensional atom probe tomography at atomic scale. Different from previous assumptions and/or results, we evidence...
A new strategy via coupling a polyol route with an oxidation process has been developed to successfully synthesize p-n junction CuO/BiVO4 heterogeneous nanostructures. The experimental results reveal that the as-prepared nanostructures exhibit much higher visible-light-driven photocatalytic activity for degradation of model dye rhodamine B (RhB) than pure BiVO4 nanocrystals. rate (C/C0) RhB is about two times enhanced efficiency attributed large number junctions in nanostructures, which...
We describe a facile room temperature solution-phase chemical approach for large scale synthesis of sub-15 nm ultralong crystalline CuO nanowires with an average diameter about 8 and lengths up to several tens micrometers. The results indicated that Cu(OH)2 were first formed subsequently served as template direct the formation nanowires. XRD, TEM, SAED HRTEM used systemically investigate compositions, morphology, size microstructure features as-prepared Raman study indicates scattering peaks...
Herein, it is demonstrated how the photocatalytic activity and stability of a semiconductor can be enhanced through metal doping simultaneous deposition in case CdS. The CdS which doped simultaneously deposited by Ag (denoted as Ag–CdS thereafter) successfully prepared one-step hydrothermal method. samples have under simulated sunlight compared with pure Ag-deposited for organic pollutant degradation H2 production from water splitting. main reason due to fast transfer photogenerated...
An automated structure-refinement program has been developed for X-ray powder diffraction data collected on disordered carbons. The minimizes the difference between observed and calculated profiles in a least-squares sense by optimizing model parameters analogously to popular Rietveld refinement method. Unlike method, which is designed crystalline materials, this allows quantification of finite size, strain disorder present carbon fibers cokes. For example, structural used includes...
Lead-free bismuth sodium titanate (Bi0.5Na0.5TiO3, BNT) perovskite nanostructures including nanoplates, nanocubes and nanowires were synthesized by a facile hydrothermal method without any additives or templates. The crystallization morphologies of the derived BNT controlled simply adjusting reaction time NaOH concentration, which examined XRD, SEM, TEM HRTEM techniques in detail. nanoplates 400 nm length several nanometers thickness obtained at 200 °C for 48 h with concentration 8–12 M....
Here we report the wet-chemical synthesis of asymmetric one-dimensional (1D) silver "nanocarrot" structures that exhibit mixed twins and stacking fault domains along ⟨111⟩ direction. Oriented attachment is dominant mechanism for anisotropic growth. Multipolar plasmon resonances up to fourth order were measured by optical extinction spectroscopy electron energy-loss (EELS) are in agreement with theoretical calculations. Compared those symmetric 1D nanostructures similar length, dipole modes...