A5102868281- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Nanomaterials for catalytic reactions
- Electrocatalysts for Energy Conversion
- Catalysts for Methane Reforming
- Catalysis and Hydrodesulfurization Studies
- Nanocluster Synthesis and Applications
- Asymmetric Hydrogenation and Catalysis
- Advanced Photocatalysis Techniques
- Carbon dioxide utilization in catalysis
- CO2 Reduction Techniques and Catalysts
- Ionic liquids properties and applications
- Copper-based nanomaterials and applications
- Ammonia Synthesis and Nitrogen Reduction
- Catalysis for Biomass Conversion
- Mesoporous Materials and Catalysis
- Organometallic Complex Synthesis and Catalysis
- Oxidative Organic Chemistry Reactions
- Catalytic Cross-Coupling Reactions
- Zeolite Catalysis and Synthesis
- Gas Sensing Nanomaterials and Sensors
- Electronic and Structural Properties of Oxides
- Thermodynamic properties of mixtures
- Additive Manufacturing Materials and Processes
- Chemical Synthesis and Reactions
Dalian Institute of Chemical Physics
2016-2025
Chinese Academy of Sciences
2016-2025
University of Chinese Academy of Sciences
2008-2024
Dalian National Laboratory for Clean Energy
2014-2023
Dalian University
2014-2020
Arizona State University
2012-2019
Tempe Union High School District
2015
Institute of Catalysis and Petrochemistry
2015
State Key Laboratory of Catalysis
2015
Collaborative Innovation Center of Chemistry for Energy Materials
2014
Supported metal nanostructures are the most widely used type of heterogeneous catalyst in industrial processes. The size particles is a key factor determining performance such catalysts. In particular, because low-coordinated atoms often function as catalytically active sites, specific activity per atom usually increases with decreasing particles. However, surface free energy metals significantly particle size, promoting aggregation small clusters. Using an appropriate support material that...
High specific activity and cost effectiveness of single-atom catalysts hold practical value for water gas shift (WGS) reaction toward hydrogen energy. We reported the preparation characterization Ir single atoms supported on FeO(x) (Ir1/FeO(x)) catalysts, which is 1 order magnitude higher than its cluster or nanoparticle counterparts even those most active Au- Pt-based catalysts. Extensive studies reveal that accounted ∼70% total containing atoms, subnano clusters, nanoparticles, thus...
Surface-supported isolated atoms in single-atom catalysts (SACs) are usually stabilized by diverse defects. The fabrication of high-metal-loading and thermally stable SACs remains a formidable challenge due to the difficulty creating high densities underpinning Here we report that Pt can be through strong covalent metal-support interaction (CMSI) is not associated with support defects, yielding high-loading SAC trapping either already deposited or PtO2 units vaporized from nanoparticles...
Abstract Dry reforming of methane (DRM) is an attractive route to utilize CO 2 as a chemical feedstock with which convert CH 4 into valuable syngas and simultaneously mitigate both greenhouse gases. Ni-based DRM catalysts are promising due their high activity low cost, but suffer from poor stability coke formation has hindered commercialization. Herein, we report that atomically dispersed Ni single atoms, stabilized by interaction Ce-doped hydroxyapatite, highly active coke-resistant...
Abstract Homogeneous catalysts generally possess superior catalytic performance compared to heterogeneous catalysts. However, the issue of catalyst separation and recycling severely limits their use in practical applications. Single‐atom have advantages both homogeneous catalysts, such as “isolated sites”, stability reusability, thus would be a promising alternative traditional In hydroformylation olefins, single‐atom Rh supported on ZnO nanowires demonstrate similar efficiency (TON≈40000)...
The classical strong metal–support interaction between TiO 2 and IB metals was demonstrated.
Strong metal-support interaction (SMSI) has gained great attention in the field of heterogeneous catalysis. However, whether single-atom catalysts can exhibit SMSI remains unknown. Here, we demonstrate that occur on TiO2 -supported Pt single atoms but at a much higher reduction temperature than for nanoparticles (NPs). involved are not covered by support nor do they sink into its subsurface. The suppression CO adsorption stems from coordination saturation (18-electron rule) rather physical...
Preferential oxidation of CO (PROX) in H2-rich stream is critical to the production clean H2 for H2-based fuel cells, which provide and efficient energy conversion. Development highly active selective PROX catalysts desirable but proved be extremely challenging. Here we report that CeO2-supported Au single atoms (Au1/CeO2) are active, selective, stable at PEMFC working temperature (∼80 °C) with >99.5% conversion over a wide window, 70–120 °C (or 50–100 °C, depending on loading). The high...
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...
Single-atom catalysts (SACs) have demonstrated superior catalytic performance in numerous heterogeneous reactions. However, producing thermally stable SACs, especially a simple and scalable way, remains formidable challenge. Here, we report the synthesis of Ru SACs from commercial RuO
The strong metal-support interaction (SMSI) has long been studied in heterogonous catalysis on account of its importance stabilizing active metals and tuning catalytic performance. As a dynamic process taking place at the interface, SMSI is closely related to metal surface properties which are usually affected by size nanoparticles (NPs). In this work we report discovery effect classical Au/TiO2 catalyst where larger Au particles more prone be encapsulated than smaller ones. A thermodynamic...
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...
The single Pt1 and Au1 atoms stabilized by lattice oxygen on ZnO{1010} surface for methanol steam reforming is reported. Density functional theory calculations reveal that the catalysis of precious metal together with coordinated stems from its stronger binding toward intermediates, lowering reaction barriers, changing pathway, enhancing greatly activity. measured turnover frequency sites was more than 1000 times higher pristine ZnO. results provide valuable insights atomically dispersed...
Identification of size effects at an atomic level is essential for designing high-performance metal-based catalysts. Here, the performance a series FeOx-supported Pt catalysts with as nanoparticles (Pt-NP) or single atoms (Pt-SAC) are compared low-temperature water-gas shift (WGS) reaction. A variety characterization methods such adsorption microcalorimetry, H2-TPR, in situ DRIFTS, and transient analysis product tests were used to demonstrate that exhibit much higher strength CO; adsorbed CO...
Tuning CO2 hydrogenation selectivity to obtain targeted value-added chemicals and fuels has attracted increasing attention. However, a fundamental understanding of the way control is still lacking, posing challenge in catalyst design development. Herein, we report our new discovery ambient pressure reaction where can be completely reversed by simply changing crystal phases TiO2 support (anatase- or rutile-TiO2 ) metal loadings on anatase-TiO2 . Operando spectroscopy NAP-XPS studies reveal...
Abstract The solvent‐free selective oxidation of alcohols to aldehydes with molecular oxygen is highly attractive yet challenging. Interfacial sites between a metal and an oxide support are crucial in determining the activity selectivity such heterogeneous catalysts. Herein, we demonstrate that use supported single‐atom catalysts (SACs) leads high this reaction. significantly increased number interfacial sites, resulting from presence individually dispersed atoms on support, renders SACs one...
Abstract Semi-hydrogenation of acetylene in excess ethylene is a key industrial process for purification. Supported Pd catalysts have attracted most attention due to their superior intrinsic activity but often suffer from low selectivity. single-atom (SACs) are promising significantly improve the selectivity, needs be improved and feasible preparation SACs remains grand challenge. Here, we report simple strategy construct 1 /TiO 2 by selectively encapsulating co-existed small amount...
Strong metal–support interactions (SMSIs) have emerged as a significant and cutting-edge area of research in heterogeneous catalysis. They play crucial roles modifying the chemisorption properties, interfacial structure, electronic characteristics supported metals, thereby exerting profound influence on catalytic properties. This Perspective aims to provide comprehensive summary latest advancements insights into SMSIs, with focus state-of-the-art situ/operando characterization techniques....
Metal-support interaction predominately determines the electronic structure of metal atoms in single-atom catalysts (SACs), largely affecting their catalytic performance. However, directly tuning metal-support oxide supported SACs remains challenging. Here, we report a new strategy to subtly regulate strong covalent (CMSI) Pt/CoFe2O4 by simple water soaking treatment. Detailed studies reveal that CMSI is weakened bonding H+, generated from dissociation, onto interface Pt-O-Fe, resulting...