A5036674060- Catalytic Processes in Materials Science
- Catalysts for Methane Reforming
- CO2 Reduction Techniques and Catalysts
- Advancements in Solid Oxide Fuel Cells
- Electronic and Structural Properties of Oxides
- Catalysis and Oxidation Reactions
- Catalysis and Hydrodesulfurization Studies
- Nanomaterials for catalytic reactions
- Electrocatalysts for Energy Conversion
- Ammonia Synthesis and Nitrogen Reduction
- Graphene research and applications
- Magnetic and transport properties of perovskites and related materials
- Ionic liquids properties and applications
- Advanced Photocatalysis Techniques
- MXene and MAX Phase Materials
- Advanced Thermoelectric Materials and Devices
- Copper-based nanomaterials and applications
- Nanocluster Synthesis and Applications
- 2D Materials and Applications
- Carbon dioxide utilization in catalysis
- Advanced Condensed Matter Physics
- Caching and Content Delivery
- Environmental remediation with nanomaterials
- Advanced materials and composites
- Quasicrystal Structures and Properties
Dalian Institute of Chemical Physics
2019-2025
Chinese Academy of Sciences
2019-2025
Dalian National Laboratory for Clean Energy
2021-2025
Collaborative Innovation Center of Chemistry for Energy Materials
2020-2025
State Key Laboratory of Catalysis
2024-2025
Institute of Catalysis and Petrochemistry
2025
University of Chinese Academy of Sciences
2019-2023
Hefei National Center for Physical Sciences at Nanoscale
2015
University of Science and Technology of China
2015
Hefei University
2015
Encapsulation of metal nanoparticles by support-derived materials known as the classical strong metal-support interaction (SMSI) often happens upon thermal treatment supported catalysts at high temperatures (≥500 °C) and consequently lowers catalytic performance due to blockage active sites. Here, we show that this SMSI state can be constructed in a Ru-MoO3 catalyst using CO2 hydrogenation reaction gas low temperature 250 °C, which favors selective CO. During reaction, Ru facilitate...
Metal nanoparticles anchored on perovskite through in situ exsolution under reducing atmosphere provide catalytically active metal/oxide interfaces for CO2 electrolysis solid oxide cell. However, there are critical challenges to obtain abundant due the sluggish diffusion process of dopant cations inside bulk perovskite. Herein, we propose a strategy promote RuFe alloy Sr2Fe1.4Ru0.1Mo0.5O6-δ by enriching Ru underneath surface via repeated redox manipulations. In scanning transmission electron...
Identifying the dynamic structure of heterogeneous catalysts is crucial for rational design new ones. In this contribution, structural evolution Fe(0) during CO2 hydrogenation to hydrocarbons has been investigated by using several (quasi) in situ techniques. Upon initial reduction, Fe species are carburized Fe3C and then Fe5C2. The by-product hydrogenation, H2O, oxidizes iron carbide Fe3O4. formation Fe3O4@(Fe5C2+Fe3O4) core-shell was observed at steady state, surface composition depends on...
Hydroxyl (OH) groups are widely present on an oxide surface, which have been recognized as a key factor affecting surface properties of the and interaction metal overlayer with oxide. Here, γ-alumina (γ-Al2O3) supports different OH contents prepared by calcinating pseudo-boehmite (AlOOH) at temperatures. The effect oxidative redispersion supported Ag nanoparticles including migration anchoring species has explored using in situ X-ray diffraction UV–visible spectroscopy, well ex photoelectron...
Supported oxides are widely used in many important catalytic reactions, which the interaction between oxide catalyst and support is critical but still remains elusive. Here, we construct a chemically bonded oxide–oxide interface by chemical deposition of Co3O4 onto ZnO powder (Co3O4/ZnO), complete reduction to Co0 has been strongly impeded. It was revealed that local interfacial confinement effect Co helps maintain metastable CoOx state CO2 hydrogenation reaction, producing 93% CO. In...
An enclosed nanospace often shows a significant confinement effect on chemistry within its inner cavity, while whether an open space can have this remains elusive. Here, we show that the surface of TiO2 creates confined environment for In2O3 which drives spontaneous transformation free nanoparticles in physical contact with into In oxide (InOx) nanolayers covering onto during CO2 hydrogenation to CO. The formed InOx are easy create oxygen vacancies but against over-reduction metallic H2-rich...
Abstract The meticulous design of active sites and light absorbers holds the key to development high-performance photothermal catalysts for CO 2 hydrogenation. Here, we report a nonmetallic plasmonic catalyst Mo N/MoO - x nanosheets by integrating localized surface plasmon resonance effect with two distinct types Leveraging synergism dual sites, H molecules can be simultaneously adsorbed activated on N atom O vacancy, respectively. Meanwhile, this noble-metal-free signifies its promising...
Abstract Sintering of active metal species often happens during catalytic reactions, which requires redispersion in a reactive atmosphere at elevated temperatures to recover the activity. Herein, we report simple method redisperse sintered Cu catalysts via O 2 -H treatment room temperature. In-situ spectroscopic characterizations reveal that H induces formation hydroxylated humid , pushing surface diffusion atoms Further, OH groups formed on most hydroxylable support surfaces such as γ-Al 3...
In heterogeneous catalysis catalyst activation is often observed during the reaction process, which mostly attributed to induction by reactants. this work we report that surface structure of molybdenum nitride (MoN
Renewable energy-driven electrocatalytic nitrate reduction reaction presents a low-carbon and sustainable route for ammonia synthesis under mild conditions. Yet, the practical application of this process is currently hindered by unsatisfactory activity long-term stability. Herein we achieve high-rate electrosynthesis using stable amorphous/crystalline dual-phase Cu catalyst. The partial current density formation rate reach 3.33 ± 0.005 A cm-2 15.5 0.02 mmol h-1 at low cell voltage 2.6 0.01...
Oxygen vacancy structures on CeO<sub>2</sub>nanocrystals vary with their morphologies and locally control the reactivity of isolated bridging hydroxyl groups.
Abstract Oxidative dispersion has been widely used in regeneration of sintered metal catalysts and fabrication single atom catalysts, which is attributed to an oxidation-induced mechanism. However, the interplay gas-metal-support interaction processes, especially gas-metal not well illustrated. Here, we show dynamic silver nanostructures on silicon nitride surface under reducing/oxidizing conditions during carbon monoxide oxidation reaction. Utilizing environmental scanning (transmission)...
Stacking order has a strong influence on the coupling between two layers of twisted bilayer graphene (BLG), which in turn determines its physical properties. Here, we report investigation interlayer epitaxially grown single-crystal 30°-twisted BLG Cu(111) at atomic scale. The stacking and morphology is controlled by rationally designed two-step growth process, that is, thermodynamically nucleation kinetically growth. crystal structure (30°-tBLG) determined to have quasicrystal-like symmetry....
Solid oxide electrolysis cells provide a practical solution for the direct conversion of CO2 to other chemicals (i.e. CO), however, an in-depth mechanistic understanding dynamic reconstruction active sites perovskite cathodes during remains great challenge. Herein, we identify that iridium-doped Sr2Fe1.45Ir0.05Mo0.5O6-δ (SFIrM) displays electrochemical feature with abundant exsolution highly dispersed IrFe alloy nanoparticles on SFIrM surface. The in situ reconstructed IrFe@SFIrM interfaces...
The decomposition of cobalt carbide (Co 2 C) to metallic in CO hydrogenation results a notable drop the selectivity valued C 2+ products, and stabilization Co remains grand challenge. Here, we report an situ synthesized K-Co catalyst, hydrocarbons achieves 67.3% at 300°C, 3.0 MPa. Experimental theoretical elucidate that CoO transforms reaction, while is dependent on reaction atmosphere K promoter. During carburization, promoter H O jointly assist formation surface * species via carboxylate...
Abstract Producing valuable chemicals like ethylene via catalytic carbon monoxide conversion is an important nonpetroleum route. Here we demonstrate electrochemical route for highly efficient synthesis of multicarbon (C 2+ ) from CO. We achieve a C partial current density as high 4.35 ± 0.07 A cm −2 at low cell voltage 2.78 0.01 V over grain boundary-rich Cu nanoparticle catalyst in alkaline membrane electrode assembly (MEA) electrolyzer, with Faradaic efficiency 87 1% and CO 85 3%. Operando...
While the effects of Sr segregation on performance and stability perovskite electrodes in solid oxide electrolysis cells (SOECs) have been widely studied, most attention has focused on...
The strong metal–support interaction (SMSI) is one of the most important concepts in heterogeneous catalysis, which has been widely investigated between metals and active oxides triggered by reductive atmospheres. Here, we report oxidative (O-SMSI) effect Pt nanoparticles (NPs) inert hexagonal boron nitride (h-BN) sheets, NPs are encapsulated oxidized (BOx) overlayers derived from h-BN support under conditions. De-encapsulation achieved washing water, residual ultrathin BOx work...
Formation and evolution of active hydrogen species from H2 on a metal oxide is great importance in many hydrogenation reactions, while understanding the nature surface remains challenge. Herein, high-vacuum-based transmission infrared spectroscopy coupled with temperature-programmed desorption has been applied to study over ZnO ZnCrOx catalysts. We show that D2 dissociates readily form Zn–D O–D at 153 K, simultaneous occurs 223 K. This corroborates reversible dissociation recombination ZnO....
Cathodic CO