A5073118003- X-ray Spectroscopy and Fluorescence Analysis
- Electron and X-Ray Spectroscopy Techniques
- Advanced Photocatalysis Techniques
- Hydrogen Storage and Materials
- Metal-Organic Frameworks: Synthesis and Applications
- Covalent Organic Framework Applications
- Graphene research and applications
- Electrocatalysts for Energy Conversion
- Catalytic Processes in Materials Science
- ZnO doping and properties
- Copper-based nanomaterials and applications
- Advancements in Battery Materials
- Crystallography and Radiation Phenomena
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Advanced X-ray Imaging Techniques
- Ammonia Synthesis and Nitrogen Reduction
- Boron and Carbon Nanomaterials Research
- Quantum Dots Synthesis And Properties
- Electronic and Structural Properties of Oxides
- Advanced Electron Microscopy Techniques and Applications
- Chalcogenide Semiconductor Thin Films
- Machine Learning in Materials Science
- Surface and Thin Film Phenomena
- Ga2O3 and related materials
University of Jinan
2014-2024
Sichuan University
2009-2022
West China Hospital of Sichuan University
2022
University of Manchester
2022
University of California, Berkeley
2009-2021
Lawrence Berkeley National Laboratory
2010-2016
State Council of the People's Republic of China
2015
Huahai Pharmaceutical (China)
2015
Stanford Synchrotron Radiation Lightsource
2010
Stanford University
2010
Monodisperse cobalt (Co) nanoparticles (NPs) were synthesized and stabilized against oxidation via reductive annealing at 600 °C. The stable Co NPs are active for catalyzing the oxygen evolution reaction (OER) in 0.1 M KOH, producing a current density of 10 mA/cm2 an overpotential 0.39 V (1.62 vs RHE, no iR-correction). Their catalysis is superior to commercial Ir catalyst both activity stability. These also assembled into monolayer array on working electrode, allowing detailed study their...
FeS2 pyrite nanocrystals with high purity have been synthesized through a surfactant-assisted hydrothermal reaction under optimum pH value. These represent new group of well-defined nanoscale structures for high-performance photovoltaic solar cells based on nontoxic and earth abundant materials.
Exploring novel 2D heterojunction photocatalysts with a wide spectral response and high active site exposure has been huge challenge. A small-sized catalyst dispersibility considered an ideal model for maximizing sites increasing atomic efficiency. Herein, the 0D/2D Z-scheme was designed by in situ solvothermal subsequent calcination air integrating dopant defect doubly modified CeO2 nanodots g-C3N4 nanosheets (CNNS). Ultrafine cobalt-doped (≈4 to 5 nm) enriched oxygen vacancies...
In the field of physics and materials science, discovery layer-polarized anomalous Hall effect (LP-AHE) stands as a crucial development. The current research paradigm is rooted in topological or inversion-asymmetric valleytronic systems, making such phenomenon rather rare. this work, universal design principle for achieving LP-AHE from inversion-symmetric single-layer lattices proposed. Through tight-binding model analysis, we demonstrate that by stacking into antiferromagnetic van der Waals...
Both synchrotron radiation based soft-X-ray absorption spectroscopy (XAS) and resonant emission (XES) on a variety of nano-structured systems has yielded characteristic fingerprints. With high-resolution monochromatized excitation, inelastic X-ray scattering (RIXS) emerged as new source information about electronic structure excitation dynamics nanomaterials. The selectivity the in terms energy polarization, also facilitated studies anisotropy. Various features observed spectra have been...
Ti-based two-dimensional transition-metal carbides (MXenes) have attracted attention due to their superior properties and are being explored across various applications1,2. Despite versatile properties, superconductivity has never been demonstrated, not even predicted, for this important group of 2D materials. In work, we introduced an electrochemical intercalation protocol construct organometallic-inorganic hybrid MXenes achieved tunable in the metallocene-modified layered crystals. Through...
The purposeful construction of dual Z-scheme system to the formation intimate interface contact and multi-channel charge flow through remains a huge challenge. Herein, tandem 2D/0D/2D g-C3N4 nanosheets/FeOOH quantum dots/ZnIn2S4 nanosheets (CNFeZn) (DZSS) has been successfully constructed using electrostatic self-assembly method. Owing band structure elaborate morphology 2D g-C3N4, 0D FeOOH ZnIn2S4 in unique designed DZSS, plenty spatial transfer channels are formed between g-C3N4/FeOOH...
The electronic structure of the titanium dioxide (TiO${}_{2}$)-fluorine-doped tin (SnO${}_{2}$:F) interface is investigated by soft x-ray absorption spectroscopy using synchrotron radiation. measurements probe site- and symmetry-selected unoccupied density states reflect interaction between an early transition-metal-oxide (${d}^{0}$) semiconductor a post-transition-metal-oxide (${d}^{10}$) degenerate semiconductor. distinct interfacial TiO${}_{2}$-SnO${}_{2}$:F established contrasting...
Applying density functional theory (DFT) calculations, we have designed fullerenes (C20, C24, C26, C28, C30, C36, C60 and C70) intercalated phthalocyanine covalent organic frameworks (Cn-Pc-PBBA COFs). First principles molecular dynamics (MD) simulations showed that the structures of Cn-Pc-PBBA COFs are stable at room temperature even higher (500 K). The interlayer distance Pc-PBBA COF has been expanded to 7.48–13.25 Å by fullerenes, pore volume surface area were enlarged 2.3–3.1 2.0–2.6...
An Mn stabilized boron sheet shows many unique properties, such as novel voltage-gated spin-filtering properties and oxidization induced half-metallicity.
O 1s x-ray absorption spectroscopy and first principle calculation have been used to probe the size effect on orbital character hybridization of conduction band anatase TiO2 nanocrystals over two orders magnitude in diameter (2-200 nm). The appearance predominance unoccupied delocalized states derived from antibonding 2p Ti 4s rather than 3d is observed when nanoparticle approaches exciton radius. These results provide an experimental evidence quantum nanocrystals.
In this paper, we performed a multiscale study on the hydrogen storage capacity of Li-doped phthalocyanine covalent organic frameworks (Li-doped Pc-PBBA COF). We combine first-principles studies adsorption and migration energies with kinetic Monte Carlo simulations adsorption, diffusion, desorption processes in COF. The calculations revealed that Li atoms can be doped surface channel COF binding energy 1.08 eV. Each cation bind three H2 molecules an average 0.11 At most, 24 adsorbed one...
The hydrogen spillover mechanism, including the H chemisorption, diffusion, and H2 associative desorption on surface of COFs atoms migration from metal catalyst to COFs, have been studied via density functional theory (DFT) calculation. results described herein show that each sp2 C atom COFs' can adsorb one with bond length dC–H between 1.11 1.14 Å, up-down arrangement adsorbed is most stable configuration. By counting chemisorption binding sites for these we predict saturation storage...
Nanodevices based on two-dimensional materials hold great promise for DNA sequencing. Owing to some unique properties, silicene has become a potential alternative the well-known graphene as sequencing material. Recently, recognition of methylation garnered attention, since methylated nucleobases are indicated biomarkers various forms cancers. In this work, we investigated interactions eight (adenine, guanine, thymine, cytosine, 5-methylcytosine, 5-hydroxymethylcytosine, 5-formylcytosine, and...
Four 1,3,5,7-tetraphenyladamantane-based covalent organic frameworks (adm-COFs) have been designed with ctn or bor net topology as hydrogen storage materials.