A5100459824- Catalytic Processes in Materials Science
- Catalysts for Methane Reforming
- Catalysis and Oxidation Reactions
- Electrocatalysts for Energy Conversion
- Hydrogen Storage and Materials
- Carbon dioxide utilization in catalysis
- Catalytic C–H Functionalization Methods
- Metal-Organic Frameworks: Synthesis and Applications
- Advanced Photocatalysis Techniques
- Zeolite Catalysis and Synthesis
- Oxidative Organic Chemistry Reactions
- Catalysis and Hydrodesulfurization Studies
- Advanced battery technologies research
- Fuel Cells and Related Materials
- Catalytic Cross-Coupling Reactions
- Ammonia Synthesis and Nitrogen Reduction
- Catalysis for Biomass Conversion
- Nuclear Materials and Properties
- Asymmetric Hydrogenation and Catalysis
- Luminescence and Fluorescent Materials
- Covalent Organic Framework Applications
- Semiconductor materials and devices
- Advanced biosensing and bioanalysis techniques
- X-ray Diffraction in Crystallography
- Advanced Chemical Physics Studies
Dalian University of Technology
2018-2025
Shenyang Institute of Computing Technology (China)
2025
Chinese Academy of Sciences
2025
Shandong University
2021-2025
State Key Laboratory of Crystal Materials
2021-2025
University of Chinese Academy of Sciences
2025
First Affiliated Hospital of Henan University
2024
Southwest University
2022-2024
Liaocheng University
2024
Shandong University of Science and Technology
2024
Abstract Rational design of single atom catalyst is critical for efficient sustainable energy conversion. However, the atomic-level control active sites essential electrocatalytic materials in alkaline electrolyte. Moreover, well-defined surface structures lead to in-depth understanding catalytic mechanisms. Herein, we report a single-atomic-site ruthenium stabilized on defective nickel-iron layered double hydroxide nanosheets (Ru 1 /D-NiFe LDH). Under precise regulation local coordination...
Ultra-small metal clusters have attracted great attention owing to their superior catalytic performance and extensive application in heterogeneous catalysis. However, the synthesis of high-density is very challenging due facile aggregation. Herein, one-step pyrolysis was used synthesize ultra-small single-atom Fe sites embedded graphitic carbon nitride with high density (iron loading up 18.2 wt %), evidenced by high-angle annular dark field-scanning transmission electron microscopy, X-ray...
Efficient electroreduction of CO2 to multi-carbon products is a challenging reaction because the high energy barriers for activation and C-C coupling, which can be tuned by designing metal centers coordination environments catalysts. Here, we design single atom copper encapsulated on N-doped porous carbon (Cu-SA/NPC) catalysts reducing products. Acetone identified as major product with Faradaic efficiency 36.7% production rate 336.1 μg h-1. Density functional theory (DFT) calculations reveal...
Oxygen evolution reaction (OER) is a pivotal process in many energy conversion and storage techniques, such as water splitting, regenerative fuel cells, rechargeable metal-air batteries. The synthesis of stable, efficient, non-noble metal-based electrocatalysts for OER has been long-standing challenge. In this work, facile scalable method to synthesize hollow conductive iron-cobalt phosphide (Fe-Co-P) alloy nanostructures using an Fe-Co metal organic complex precursor described. Fe-Co-P...
Carbon dioxide (CO2) hydrogenation to methanol with H2 produced renewable energy represents a promising path for the effective utilization of major anthropogenic greenhouse gas, in which catalysts play key role CO2 conversion and selectivity. Although still under development, indium oxide (In2O3)-based have attracted great attention recent years due excellent selectivity along high activity conversion. In this review, we discuss advances In2O3-based based on both experimental computational...
Bimetallic NiFe catalysts have emerged as a promising alternative to the traditional Ni for CO2 methanation. However, promoting effect of Fe on bimetallic remains ambiguous. In this study, series derived from hydrotalcite precursors were investigated. situ x-ray diffraction (XRD) analysis revealed that small alloy particles formed and remained stable during reaction. When Fe/Ni = 0.25, exhibited highest conversion, CH4 selectivity stability in methanation at low temperature 250–350 °C. The...
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...
Cobalt catalysts supported on TiO2 with different crystal forms (anatase and rutile) differ sharply in CO2 conversion product selectivity for hydrogenation. The Co/rutile-TiO2 catalyst selectively catalyzed hydrogenation to CH4, while CO is the main Co/anatase-TiO2 catalyst. In situ DRIFT (diffuse reflectance infrared Fourier transform) results have partially revealed reaction pathway of these two catalysts. On Co/rutile-TiO2, proceeds through key intermediate formate species, which further...
Particle size is an important parameter of supported catalysts, but understanding the size-performance relationship a challenge, especially in some complicated process. In this contribution, particle effect on CO2 hydrogenation to hydrocarbons over iron-based catalysts was deconvoluted into effects primary and secondary reactions. With range 2.5–12.9 nm, overall selectivity C2+ increases continuously, while that CO decreases with increasing size. The reverse water gas shift (RWGS) reaction...
Self-supporting 3D (SSD) carbon nitrides (UCN-X, X = 600-690; where represents the pyrolytic temperature) consisting of curved layers, with plenty wrinkles and enlarged size, are synthesized via a facile stepwise strategy. Such unique features SSD structure exhibiting dramatically improved charge mobility, extended π-conjugated aromatic system, partial distortion heptazine-based skeleton can not only keep easier activation intrinsic π → π* electronic transition but also awaken n in nitride....
Understanding the structure–catalytic activity relationship is crucial for developing new catalysts with desired performance. In this contribution, we report performance of In2O3 different crystal phases in reverse water gas shift (RWGS) reaction, where observe changing induced by a phase transition under reaction conditions. Cubic (c-In2O3) exhibits higher RWGS rate than hexagonal (h-In2O3) at temperatures below 350 °C because its (1) enhanced dissociative adsorption H2, (2) facile...
Bimetallic Pt–Co nanoparticles (NPs) were prepared and characterized by scanning transmission electron microscopy, in situ X-ray absorption spectroscopy, synchrotron diffraction, catalytic conversion for propane dehydrogenation with without added H2. In addition, the surface extended fine structure (EXAFS) obtained fitting difference spectrum between fully reduced room-temperature-oxidized catalysts suggest that remains Pt3Co, although core changes from Pt to Pt3Co PtCo. At low Co loading,...
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...
We report a comparative study of isolated FeII, iron oxide particles, and metallic nanoparticles on silica for non-oxidative propane dehydrogenation. It was found that the most selective catalyst an FeII species prepared by grafting open cyclopentadienide complex, bis(2,4-dimethyl-1,3-pentadienide) iron(II) or Fe(oCp)2. The evolution surface elucidated 1H NMR, diffuse reflectance infrared Fourier transform spectroscopy X-ray absorption spectroscopies. oxidation state local structure Fe were...
X-ray absorption spectroscopy and in situ electron paramagnetic resonance evidence were provided for the reduction of Cu(II) to Cu(I) species by alkynes presence tetramethylethylenediamine (TMEDA), which TMEDA plays dual roles as both ligand base. The structures starting obtained determined (TMEDA)CuCl2 [(TMEDA)CuCl]2 dimer, respectively.
Supported multimetallic nanoparticles (NPs) are widely used in industrial catalytic processes, where the relation between surface structure and function is well-known. However, effect of subsurface layers on such catalysts remains mostly unstudied. Here, we demonstrate a clear supported 2 nm core–shell NPs with atomically precise high temperature stable Pt3Mn intermetallic measured by situ synchrotron X-ray Diffraction, difference Absorption Spectroscopy, Energy Dispersive Spectroscopy. The...
Glassy carbon electrodes were functionalized with redox-active moieties by condensation of o-phenylenediamine derivatives o-quinone sites native to graphitic surfaces. Electrochemical and spectroscopic investigations establish that these graphite-conjugated catalysts (GCCs) exhibit strong electronic coupling the electrode, leading electron transfer (ET) behavior diverges fundamentally from solution-phase or surface-tethered analogues. We find (1) ET is not observed between electrode a GCC...
Abstract β‐Lactam scaffolds are considered to be ideal building blocks for the synthesis of nitrogen‐containing compounds. A new palladium‐catalyzed oxidative carbonylation N ‐allylamines α‐methylene‐β‐lactams is reported. DFT calculations suggest that formation β‐lactams via a four‐membered‐ring transition state favorable.
Ga(<sc>iii</sc>)-alkyl and alkoxide model compounds demonstrate XANES edge energy shifts similar to those in Ga dehydrogenation catalysts without a change oxidation state.