A5101595171- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Advanced Photocatalysis Techniques
- Copper-based nanomaterials and applications
- Iron oxide chemistry and applications
- Ferroelectric and Piezoelectric Materials
- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Electronic and Structural Properties of Oxides
- Multiferroics and related materials
- Electrocatalysts for Energy Conversion
- ZnO doping and properties
- Microwave Dielectric Ceramics Synthesis
- Gas Sensing Nanomaterials and Sensors
- TiO2 Photocatalysis and Solar Cells
- Perovskite Materials and Applications
- Mine drainage and remediation techniques
- Nanoparticle-Based Drug Delivery
- Acoustic Wave Resonator Technologies
- Polyoxometalates: Synthesis and Applications
- Crystallography and molecular interactions
- Clay minerals and soil interactions
- Covalent Organic Framework Applications
- Luminescence Properties of Advanced Materials
- Catalytic Processes in Materials Science
Zhejiang Chinese Medical University
2025
Beijing University of Chemical Technology
2025
Research Institute of Petroleum Exploration and Development
2018-2025
Chang'an University
2018-2024
Ministry of Water Resources of the People's Republic of China
2024
Xi'an Jiaotong University
2010-2021
University of Southern California
2015-2017
China XD Group (China)
2014-2017
State Key Laboratory of Multiphase Flow in Power Engineering
2016
Alex's Lemonade Stand Foundation
2015
A series of Cu-doped ZnIn2S4 photocatalysts has been synthesized by a facile hydrothermal method, with the copper concentration varying from 0 wt% to 2.0 wt%. The physical and photophysical properties these were characterized X-ray diffraction (XRD), photoluminescence spectroscopy (PL), scanning electron microscopy (SEM), UV−visible diffuse reflectance (UV−vis). spectra shifted monotonically longer wavelengths as increased wt%, indicating that optical greatly depended on amount Cu doped....
Single-atom nickel catalysts hold great promise for photocatalytic water splitting due to their plentiful active sites and cost-effectiveness. Herein, we adopt a reactive-group guided strategy prepare atomically dispersed on red phosphorus. The hydrothermal treatment of phosphorus leads the formation P-H P-OH groups, which behave as reactive functionalities generate dual structure single-atom P-Ni P-O-Ni catalytic sites. produced provide two different functions: reduction oxidation....
A unique oil-in-water emulsion route has been devised to synthesize nanosized magnetite (Fe3O4) particles using a small amount of cyclohexane as the oil phase, NP5 + NP9 surfactant and Fe(II)/Fe(III) salt solution aqueous phase. The Fe3O4 powder thus derived from containing 88 wt% 0.3 M FeSO4 Fe(NO3)3 in phase possesses an equiaxial morphology average particle size <10 nm. Studies on electrical conductivity emulsions function Fe2+/Fe3+ concentration revealed complexation effect towards ions....
Advances in perovskite solar cells require development of means to control and eliminate the nonradiative charge recombination pathway. Using ab initio nonadiabatic molecular dynamics, we demonstrate that perovskites is extremely sensitive state halogen vacancy. A missing iodine anion MAPbI3 has almost no effect on losses. However, when vacancy reduced, accelerated by up 2 orders magnitude. The acceleration occurs due formation a deep hole trap singly reduced vacancy, both shallow traps for...
Ultrafast charge recombination in hematite (α-Fe2O3) severely limits its applications solar energy conversion and utilization, for instance, photoelectrochemical water splitting. We report the first time-domain ab initio study of relaxation dynamics α-Fe2O3 with without oxygen vacancy (Ov) defect, using non-adiabatic molecular implemented within time-dependent density functional theory. The simulations show that hole trapping is rate-limiting step electron–hole process both neutral ionized...
Controlling the shape or morphology of semiconductor nanocrystals is central to their enhanced physical and chemical properties. Herein, using CdS as a model photocatalyst, we demonstrate that crystal habit visible-light-active can be quantitatively controlled through synthesis kinetics. Growth rate control {0001} facets (r1) {101̅1} (r1′) was achieved by simply employing syringe pump, which enables us finely tune from nanocones, nanofrustums, further nanoplates. These shape-controlled...
Sodium bismuth titanate (Na0.5Bi0.5)TiO3 (NBT) of perovskite structure is among the best known lead-free piezoelectric∕ferroelectric that promises a number applications in sensors and actuators. However, NBT thin film form has not been properly investigated, although bulk ceramic widely studied. In this letter, we report growth polycrystalline films by radio-frequency magnetron sputtering their ferroelectric behavior. The exhibit well-defined hysteresis loop, with remanent polarization...
Photocorrosion is considered detrimental to photocatalysis; however, it can probe the active site of photooxidation facet-engineered Cu<sub>2</sub>WS<sub>4</sub> photocatalysts.
Si, Ge, or Sn doped hematite (α-Fe2O3) photoanodes show significantly enhanced efficiency for photo-oxidization of water. We employed DFT+U to study the doping α-Fe2O3 with group IV elements, i.e., and Sn. From calculated formation energies chemical potentials, three key points are concluded. (1) Low oxygen pressure is favored both substitutional interstitial dopants. (2) Substitutional Fe atom at lattice site more stable than in octahedral vacancies. (3) Most interestingly, Ge found be...
Significantly enhanced photoelectrochemical performance was achieved over a Ta doped α-Fe<sub>2</sub>O<sub>3</sub> photoanode for the modified electronic structure and well-preserved nanorod nanostructure.
Hematite (α-Fe2O3) is a promising photoanode material for photoelectrochemical water splitting. Surface-passivating layers are effective in improving oxidation kinetics; however, the passivation mechanism not fully understood due to complexity of interfacial reactions. Focusing on Fe-terminated Fe2O3 (0001) surface that exhibits states band gap, we perform ab initio quantum dynamics simulations study effect an α-Ga2O3 overlayer charge recombination. The eliminates and suppresses...
It is common that dopants enhance the conductivity of hematite Fe2O3, a popular photoanode, but origin enhancement remains unclear. We establish detailed mechanism by performing ab initio molecular dynamics simulations on electron polarons (EPs) in obtained an excess (e@EP) and substitutional Si doping (Si@EP). For first time, we observe EP hopping both pristine doped Fe2O3. find neighboring Fe-Fe distance main driving force for hopping, which occurs adiabatic charge transfer mechanism. The...
Abstract Wound healing remains a significant global health challenge, affecting millions annually and imposing substantial economic burdens. Most commercially available biomaterials for wound management primarily address external symptoms, including hemostasis, exudation, scarring, infection. Advanced derived from endogenous molecules aim to better replicate the native microenvironment, promoting enhanced repair. Since wounds frequently occur on exposed skin, which is vulnerable UVA...
As an efficient and economical method to enhance oil recovery (EOR), it is very important explore the applicability of chemical flooding under harsh reservoir conditions, such as high temperature salinity. We designed microscopic visualization displacement experiments comprehensively evaluate performance zwitterionic surfactant betaine (BSB), a temperature- salinity-resistant hydrophobically modified polymer (BHR), surfactant-polymer (SP) binary systems. Based on macroscopic properties...
The authors report a giant reversible piezoelectric strain of ∼4.2% achieved with single-crystalline PbZr0.2Ti0.8O3 nanowires ∼70nm in diameter, which is nearly 300% greater than the nominal values reported for ceramic perovskite single crystals. arises from switching ferroelastic domains. In nanowires, there competition between surface tension, forces in-plane polarization, and applied electric field, stabilizes out-of-plane through entire voltage cycle, result movement