A5081444975- Hydrogen embrittlement and corrosion behaviors in metals
- Nuclear Materials and Properties
- Advanced Photocatalysis Techniques
- 2D Materials and Applications
- Graphene research and applications
- High-Temperature Coating Behaviors
- Microstructure and mechanical properties
- Metal and Thin Film Mechanics
- Fusion materials and technologies
- Electrocatalysts for Energy Conversion
- High Temperature Alloys and Creep
- MXene and MAX Phase Materials
- CO2 Reduction Techniques and Catalysts
- Thermal properties of materials
- Advanced ceramic materials synthesis
- Advancements in Battery Materials
- Corrosion Behavior and Inhibition
- Fatigue and fracture mechanics
- Aluminum Alloys Composites Properties
- Adhesion, Friction, and Surface Interactions
- Catalytic Processes in Materials Science
- Ammonia Synthesis and Nitrogen Reduction
- Force Microscopy Techniques and Applications
- Advanced materials and composites
- Microstructure and Mechanical Properties of Steels
McGill University
2016-2025
Huanghuai University
2022-2024
Wuhan University
2023-2024
Dalian Ocean University
2021-2024
Zhongnan Hospital of Wuhan University
2024
Hong Kong Baptist University
2024
Zhengzhou University of Light Industry
2023
Sichuan University
2022
Fudan University
2022
Shanghai Municipal Center For Disease Control Prevention
2022
Photoelectrochemical (PEC) reduction of CO2 with H2O not only provides an opportunity for reducing net emissions but also produces value-added chemical feedstocks and fuels. Syngas, a mixture CO H2, is key feedstock the production methanol other commodity hydrocarbons in industry. However, it challenging to achieve efficient stable PEC into syngas controlled composition owing difficulties associated inertness complex reaction network conversion. Herein, by employing metal/oxide interface...
We have investigated the phase transformation of bulk MoS2 crystals from metastable metallic 1T/1T' to thermodynamically stable semiconducting 2H phase. The material was prepared by Li intercalation and deintercalation. thermally driven kinetics were studied with in situ Raman optical reflection spectroscopies yield an activation energy 400 ± 60 meV (38 6 kJ/mol). calculate expected minimum pathways for these transformations using DFT methods. experimental corresponds approximately...
Abstract The electrochemical reduction of N 2 to NH 3 is emerging as a promising alternative for sustainable and distributed production . However, the development has been impeded by difficulties in adsorption, protonation *NN, inhibition competing hydrogen evolution. To address issues, we design catalyst with diatomic Pd‐Cu sites on N‐doped carbon modulation single‐atom Pd Cu. introduction Cu not only shifts partial density states toward Fermi level but also promotes d‐2π* coupling between...
Anion exchange membrane fuel cells are limited by the slow kinetics of alkaline hydrogen oxidation reaction (HOR). Here, we establish HOR catalytic activities single-atom and diatomic sites as a function *H *OH binding energies to screen optimal active for HOR. As result, Ru-Ni one is identified best center. Guided theoretical finding, subsequently synthesize catalyst with supported on N-doped porous carbon, which exhibits excellent activity, CO tolerance, stability also superior single-site...
Abstract Fracture of metals at the nanoscale and corresponding failure mechanisms have recently attracted considerable interest. However, quantitative in situ fracture experiments are rarely reported. Here it is shown that, under uni‐axial tensile loading, single crystalline ultrathin gold nanowires may two modes, displaying distinctively different morphologies ductility. In high resolution transmission electron microscopy (HRTEM) studies suggest that unexpected brittle‐like was closely...
A rational design of an electrocatalyst presents a promising avenue for solar fuels synthesis from carbon dioxide (CO2) fixation but is extremely challenging. Herein, we use density functional theory calculations to study inexpensive binary copper-iron catalyst photoelectrochemical CO2 reduction toward methane. The reaction energetics suggest that Cu and Fe in the system can work synergy significantly deform linear configuration reduce high energy barrier by stabilizing intermediates, thus...
A monotonical relationship between the binding energies and lattice constants of M<sub>3</sub>C<sub>2</sub>O<sub>2</sub> was identified, which indicated that MXenes with a smaller constant tends to exhibit stronger anchoring effect.
Rationally tuning the local structures of single-atomic active sites for electrocatalytic N2 reduction reaction (NRR) remains an urgent but worthwhile research topic. Herein, we accomplish modulation Mn and construct single Mn–O3N1 anchored on porous carbon (Mn–O3N1/PC) by delicately controlling Mn–O bonding conditions. The constructed are confirmed via combination atomic-scale imaging, Raman spectroscopy, synchrotron radiation-based soft hard X-ray absorption spectroscopies, photoelectron...
Single Mo center supported on N-doped black phosphorus is predicted to be a compelling highly efficient and durable catalyst for electrochemical N<sub>2</sub> fixation by density functional theory calculations.
Hydrogen embrittlement of metals is widely observed, but its atomistic origins remain little understood and much debated. Combining a unique identification interstitial sites through polyhedral tessellation first-principles calculations, we study hydrogen adsorption at grain boundaries in variety face-centered cubic Ni, Cu, γ-Fe, Pd. We discover the chemomechanical origin variation energetics for boundaries. A general formula established to provide accurate assessments trapping segregation...
An ultrasensitive magnetic field sensor based on a compact in-fiber Mach–Zehnder interferometer (MZI) created in twin-core fiber (TCF) is proposed, and its performance experimentally demonstrated. A section of TCF was spliced between two sections standard single-mode fibers, then microchannel drilled through one core the by means femtosecond laser micromachining. The with immersed water-based Fe3O4 fluid (MF), forming direct component light propagation path, sealed capillary tube, achieving...
Electrochemical conversion of CO2 into formate is a promising strategy for mitigating the energy and environmental crisis, but simultaneously achieving high selectivity activity electrocatalysts remains challenging. Here, we report low-dimensional SnO2 quantum dots chemically coupled with ultrathin Ti3C2Tx MXene nanosheets (SnO2/MXene) that boost conversion. The coupling structure well visualized verified by high-resolution electron tomography together nanoscale scanning transmission X-ray...
With the electrochemical carbon dioxide reduction reaction (CO2RR) being a promising method to reduce atmospheric (CO2), transition metal dichalcogenides (TMDCs), such as molybdenum disulfide (MoS2), have recently risen potential catalysts for CO2RR. However, pristine TMDCs are bottlenecked by insufficiency of active sites in basal plane. In this study, focusing on polycrystalline MoS2, we perform systematic density functional theory calculations investigate role grain boundaries (GBs)...
Abstract Removable partial dentures (RPDs) are traditionally made using a casting technique. New additive manufacturing processes based on laser sintering has been developed for quick fabrication of RPDs metal frameworks at low cost. The objective this study was to characterize the mechanical, physical, and biocompatibility properties RPD cobalt–chromium (Co–Cr) alloys produced by two laser‐sintering systems compare them those prepared traditional methods. laser‐sintered Co–Cr were processed...
Abstract The unique structure and prominent properties of black phosphorus (BP) its monolayer multilayers in device applications have attracted significant attention to this elemental 2D material. In study, a comprehensive evaluation the candidacy BP as channel material for high‐performance volatile organic compound (VOC) sensors is conducted combining first‐principles density functional theory calculations non‐equilibrium Green's function formalism. adsorption configurations energetics...