A5056971622- Ferroelectric and Piezoelectric Materials
- Advanced Memory and Neural Computing
- Multiferroics and related materials
- Microwave Dielectric Ceramics Synthesis
- Transition Metal Oxide Nanomaterials
- Ferroelectric and Negative Capacitance Devices
- Advanced Photocatalysis Techniques
- Gas Sensing Nanomaterials and Sensors
- ZnO doping and properties
- Electronic and Structural Properties of Oxides
- Perovskite Materials and Applications
- Luminescence Properties of Advanced Materials
- Acoustic Wave Resonator Technologies
- Advanced Sensor and Energy Harvesting Materials
- Ga2O3 and related materials
- Dielectric properties of ceramics
- Nuclear materials and radiation effects
- Photorefractive and Nonlinear Optics
- Copper-based nanomaterials and applications
- Quantum Dots Synthesis And Properties
- CCD and CMOS Imaging Sensors
- Nanomaterials for catalytic reactions
- Covalent Organic Framework Applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Membrane Separation Technologies
Sun Yat-sen University
2015-2025
Materials Science & Engineering
2025
Kunming Medical University
2024
South China Normal University
2012-2014
State Key Laboratory of Optoelectronic Materials and Technology
2013-2014
Zhejiang University
2007
We report that CoNi2S4 nanosheet arrays exhibit ultrahigh specific capacitance of 2906 F g–1 and areal 6.39 cm–2 at a current density 5 mA cm–2, as well good rate capability cycling stability, superior electrochemical performances with an energy 33.9 Wh kg–1 power 409 W have been achieved in assembled aqueous asymmetric supercapacitor. The were situ grown on nickel foams by facile two-step hydrothermal method. formation mechanism the was based anion-exchange reaction involving pseudo...
Piezoelectric effect, commonly known as a change in electric polarization piezoelectric/ferroelectric materials under mechanical stress, is extensively employed driving force for the catalytic degradation of organic pollutants. However, relationship between and piezocatalytic activity still unclear. In this work, we investigated role ferroelectric BaTiO3 nanoparticles through annealing at different temperatures or poling fields. The annealed 800 °C exhibit effectively enhanced compared with...
The opportunity of spinel ferrites in nonvolatile memory device applications has been demonstrated by the resistive switching performance characteristics a Pt/NiFe2O4/Pt structure, such as low operating voltage, high yield, long retention time (up to 105 s), and good endurance 2.2 × 104 cycles). dominant conduction mechanisms are Ohmic low-resistance state lower-voltage region high-resistance Schottky emission higher-voltage state. On basis measurements temperature dependence resistances...
Piezo-photocatalysis has emerged as a promising strategy to address environmental pollution and the fast-growing energy shortage. Unfortunately, current efficiencies of piezo-photocatalysts are still far from ideal, improving their catalytic efficiency remains challenging. In this paper, we introduce oxygen vacancies (OVs) in Bi4Ti3O12 (BIT) nanosheets boost piezo-photocatalytic performance. Compared pristine BIT nanosheets, with an optimized OV concentration exhibit excellent activity,...
The discovery of piezocatalysts opens up a new route to wastewater decontamination. piezoelectricity barium titanate nanocrystals induced by ultrasonic vibration was found effective degrade organic pollutants. In the present work, products (Ba,Sr)TiO3 (BST) with different morphologies including nanowires (NWs), nanoparticles (NPs) and their composite were synthesized template hydrothermal method. And, piezocatalytic behavior them thoroughly investigated respect possible influence lowered...
A variety of nanostructured Bi4Ti3O12 materials with diverse morphologies were synthesized by a novel hydrothermal method using layered titanate Na2Ti3O7 as synthetic precursor. Among these materials, decussated nanoplates exhibit superior piezocatalytic activity compared other piezocatalysts the perovskite family. The enhanced is attributed to large piezoelectric potential difference and short distance between polar surfaces, which may help enhance driving force charge transport. finite...
We report on highly uniform resistive switching properties of amorphous InGaZnO (a-IGZO) thin films. The films were fabricated by a low temperature photochemical solution deposition method, simple process combining chemical and ultraviolet (UV) irradiation treatment. a-IGZO based devices exhibit long retention, good endurance, voltages, stable distribution high resistance states. Electrical conduction mechanisms also discussed the basis current–voltage characteristics their dependence....
Surface modification of Ag nanoparticles on BaTiO<sub>3</sub> can significantly enhance the piezocatalytic activity catalyst.
A novel catalytic effect of pyroelectric materials induced by a change in temperature, namely catalysis, was found to be attractive due its ability utilize waste heat pollution treatment. In this work, the properties BaTiO3 (BTO) nanowires synthesized template hydrothermal method have been thoroughly investigated. The with an elongated polar axis show superior performance comparison equiaxial nanoparticles. Our numerical simulation results finite element indicate that enhanced efficiency BTO...
Point defects in piezoelectric semiconductors play a significant role regulating the piezocatalytic performance. However, of metal vacancies piezocatalysis has been less explored than that oxygen vacancies. Herein, Bi2WO6 (BWO) nanosheets with tunable Bi were synthesized using an ion exchange method. High-resolution transmission electron microscopy directly revealed existence lattice BWO and precipitation quasiparticles. The highest concentration exhibited excellent decomposition efficiency...
Powder-form piezocatalysts suffer from poor recyclability and pose a potential threat of creating serious secondary pollution, which restrict their practical applications. Thin-film piezocatalysts, not only exhibit good but also fully contact with solution, are believed to be one the solutions address these problems. In this work, nanostructured BaTiO3 (BTO) thin films were fabricated by facile hydrothermal method for applications in piezocatalysis. The vertically standing BTO nanosheets...
We report reproducible resistive switching performance and relevant physical mechanism of sandwiched Pt/CoFe2O4/Pt structures in which the CoFe2O4 thin films were fabricated by a chemical solution deposition method. Uniform voltages, good endurance, long retention have been demonstrated memory cells. On basis analysis current-voltage characteristic its temperature dependence, we suggest that carriers transport through conducting filaments low resistance state with Ohmic conduction behavior,...
Diphasic Ba<sub>1−x</sub>Ca<sub>x</sub>TiO<sub>3</sub> nanowires near a solubility limit exhibit enhanced piezocatalytic, photocatalytic and piezo-/photocatalytic performance.
Piezocatalysis is one of the green and promising catalytic technologies for degradation organic pollutants. Surface modifications such as exposed facet engineering surface decoration nanoparticles (NPs) are simple but useful enhancement strategies a system. However, synergistic effect mechanism dual-cocatalyst on piezocatalytic activity still ambiguous more investigations expected. Herein, activities BaTiO3 (BTO) polyhedrons with anisotropic {001} {110} facets BTO cubes isotropic were...
We report on the co-existence of bipolar and unipolar resistive switching behaviors in Ag/ZnFe2O4/Pt structures which ZnFe2O4 layer was fabricated by a chemical solution deposition method. The memory devices show reproducible stable switching, tri-state under only applied negative bias voltage, transited from with different electroforming conditions. Excellent cycling both is demonstrated. Based conducting filament model, electrochemical metallization effect has been proposed to explain...
The resistive switching performance of NiFe<sub>2</sub>O<sub>4</sub> thin films can be enhanced by controlling Ag-NPs doping concentration.