A5064766132- Advancements in Battery Materials
- Catalytic Processes in Materials Science
- Graphene research and applications
- Transition Metal Oxide Nanomaterials
- Electrocatalysts for Energy Conversion
- ZnO doping and properties
- Advanced ceramic materials synthesis
- Electronic and Structural Properties of Oxides
- Catalysis and Oxidation Reactions
- Advanced battery technologies research
- Advanced Memory and Neural Computing
- Semiconductor materials and devices
- 2D Materials and Applications
- Microstructure and mechanical properties
- Copper-based nanomaterials and applications
- Nanomaterials for catalytic reactions
- Quantum Dots Synthesis And Properties
- Advanced Electron Microscopy Techniques and Applications
- Advanced Photocatalysis Techniques
- Carbon Nanotubes in Composites
- Advanced Thermoelectric Materials and Devices
- Gas Sensing Nanomaterials and Sensors
- Magnetic and transport properties of perovskites and related materials
- Fusion materials and technologies
- Zeolite Catalysis and Synthesis
Dalian Institute of Chemical Physics
2022-2025
Chinese Academy of Sciences
2014-2025
The University of Tokyo
2019-2024
Institute of Physics
2013-2023
Institute of Engineering
2022-2023
Osaka University
2023
Nagoya University
2023
Hirosaki University
2023
Hokkaido University
2023
Kyoto University
2020-2022
The strong metal–support interaction (SMSI) is of great importance for supported catalysts in heterogeneous catalysis. We report the first example SMSI between Au nanoparticles (NPs) and hydroxyapatite (HAP), a nonoxide. reversible encapsulation NPs by HAP support, electron transfer, changes CO adsorption are identical to classic except that Au/HAP occurred under oxidative condition; opposite condition classical SMSI. not only enhanced sintering resistance upon calcination but also improved...
Abstract Supported Au nanocatalysts have attracted intensive interest because of their unique catalytic properties. Their poor thermal stability, however, presents a major barrier to the practical applications. Here we report an ultrastable nanocatalyst by localizing nanoparticles (NPs) in interfacial regions between TiO 2 and hydroxyapatite. This configuration makes NP surface partially encapsulated due strong metal–support interaction exposed accessible reaction molecules. The helps...
Constructing vacancy-decorated heterojunction photocatalysts is a feasible strategy for highly efficient photooxidation of toluene to benzaldehyde. However, poor interface interaction and vacancy-triggered mismatched redox kinetics seriously impede photocatalytic activity improvement. Herein, chemically bonded Cs3Bi2Br9–x@AgBr core–shell with unified adsorption-redox sites fabricated via an in-situ light-assisted Ag+ insertion method. Experiments theoretical calculations demonstrate that the...
Abstract As anodes of Li‐ion batteries, copper oxides (CuO) have a high theoretical specific capacity (674 mA h g −1 ) but own poor cyclic stability owing to the large volume expansion and low conductivity in charges/discharges. Incorporating reduced graphene oxide (rGO) into CuO with conventional methods fails build robust interaction between rGO efficiently improve overall anode performance. Here, Cu 2 O/CuO/reduced (Cu O/CuO/rGO) 3D hierarchical nanostructure are synthesized facile,...
The possibility to induce magnetism in light‐element materials that contain only s and p electrons is of fundamental practical importance. Here, weak high‐temperature ferromagnetism observed carbon‐doped boron nitride (B‐C‐N) nanosheets. bulk‐quantities B‐C‐N nanosheets are free metallic impurities prepared through a multi‐step process. These samples exhibit ferromagnetic hysteresis stable at room temperature above, with saturation magnetization coercivity comparable the previously reported...
Getting a grip on the switching mechanism in nanoionic resistive memories: bipolar electrochemical for mass transfer of Ag nanoscale SiO2 is disclosed. The in-situ atomic-level experiments provide detailed evidence mass-transfer process under external electric fields. directly leads to conductive filament formation and disruption, which responsible memories. As service our authors readers, this journal provides supporting information supplied by authors. Such materials are peer reviewed may...
Abstract Thermal transistors that electrically control heat flow have attracted growing attention as thermal management devices and phonon logic circuits. Although several are demonstrated, the use of liquid electrolytes may limit application from viewpoint reliability or leakage. Herein, a solid‐state transistor can electrochemically with an on‐to‐off ratio conductivity (κ) ≈4 without using any is demonstrated. The multilayer film composed upper electrode, strontium cobaltite (SrCoO x ),...
Enhancing oxygen activation through defect engineering is an effective strategy for boosting catalytic oxidation performance. Herein, we demonstrate that quenching preparing defect-rich Pt/metal oxide catalysts with superior activity. As a proof of concept, α-Fe2O3 in aqueous Pt(NO3)2 solution yielded catalyst containing Pt single atoms and clusters over (Pt/Fe2O3-Q), which possessed state-of-the-art activity toluene oxidation. Structural spectroscopic analyses established the process...
Abstract A fruitful paradigm in the development of low‐cost and efficient water splitting systems for hydrogen generation is to search highly active non‐noble catalysts towards evolution reaction (HER). Here, electrocatalytic HER activity nanostructured amorphous nickel boride (Ni−B) alloy has been investigated. Amorphous Ni−B exhibited excellent catalytic efficiency long‐term stability over a broad pH range, which actually comparable performance Pt. This high due structure moderate electron...
Grain boundaries (GBs) are considered as the effective sinks for point defects, which improve radiation resistance of materials. However, fundamental mechanisms how GBs absorb and annihilate defects under irradiation still not well understood at atomic scale. With aid resolution scanning transmission electron microscope, we experimentally investigate atomistic mechanism absorption by a ∑31 GB in α-Al
MXenes have aroused intensive enthusiasm because of their exotic properties and promising applications. However, to date, they are usually synthesized by etching technologies. Developing synthetic technologies provides more opportunities for innovation may extend unexplored Here, we report a bottom-up gas-phase synthesis Cl-terminated MXene (Ti2CCl2). The endows Ti2CCl2 with unique surface chemistry, high phase purity, excellent metallic conductivity, which can be used accelerate polysulfide...
Grain boundaries (GBs) modulate the macroscopic properties in polycrystalline materials because they have different atomic and electronic structures from bulk. Despite progress on understanding of GB structures, knowledge localized band is still lacking. Here, we experimentally characterized gaps four typical GBs α-Al2O3 by scanning transmission electron microscopy valence energy-loss spectroscopy (EELS). It was found that are narrowed 0.5–2.1 eV compared with 8.8 By combing core-loss EELS...
We report unambiguous observation of spatial self-phase modulation (SSPM) in a dispersive suspension graphite flakes. This coherent nonlinear optical effect bulk is found to be broadband and large, with third-order susceptibility χ(3) 2.2 × 10−9 esu (i.e., 3.1 10−17 m2/V2 SI units) at 532 nm excitation. Comparison other carbon allotropes shows that this value 5 107 times higher than C60 but ∼50 lower graphene, fully exhibiting the electronic origin SSPM.
The advancement of cost-effective Pt catalysts for volatile organic compound (VOC) combustion holds significant importance. Enhancing the adsorption and activation O2 VOCs on is vital VOC oxidation reaction. In this study, we utilized a two-step quenching method to alter iron rust, resulting in deposition species Sn-doped Fe2O3 sample (Ptq/Snq:Fe2O3). Experiments theoretical calculations revealed that both process Sn dopants would induce generation oxygen vacancies, improving mobility...
Nanoscale defects like grain boundaries (GBs) would introduce local phonon modes and affect the bulk materials' thermal, electrical, optical, mechanical properties. It is highly desirable to correlate atomic arrangements for individual precisely understand structure–property relation. Here we investigated localized of Al2O3 GBs by combination vibrational electron energy loss spectroscopy (EELS) in scanning transmission microscope density functional perturbation theory (DFPT). The differences...
Upcycling polyethylene terephthalate (PET) wastes by photoreforming is a sustainable approach in energy production and waste treatments. In this study, PET was recycled into hydrogen acetates using photocatalysts, that...
We investigated the strong coupling between excitons of ZnO nanowires (NWs) and localized surface plasmons (LSPs) individual Ag nanoparticles (NPs) by monochromated electron energy loss spectroscopy (EELS) in an aberration-corrected scanning transmission microscopy (STEM) instrument. The EELS results confirmed that hybridization exciton with LSPs NP created two plexcitons: lower branch plexcitons (LPs) a symmetrical dipole distribution upper (UPs) antisymmetrical distribution. spatial maps...
A high <italic>ZT</italic> of 0.11 at room temperature was realized in layered cobalt oxide by substitution heavy atomic mass Ba.
Abstract An in‐depth mechanistic understanding of the electrochemical lithiation process tungsten oxide (WO 3 ) is both fundamental interest and relevant for potential applications. One most important features WO formation chemically flexible, nonstoichiometric Li x , known as bronze. Herein, we achieved real‐time observation deep single‐crystal nanowires by constructing in situ transmission electron microscopy (TEM) cells. As revealed nanoscale imaging, diffraction, spectroscopy, it shown...