A5027268662- Catalytic Processes in Materials Science
- Electrocatalysts for Energy Conversion
- Catalysis and Oxidation Reactions
- Advanced Photocatalysis Techniques
- Nanomaterials for catalytic reactions
- CO2 Reduction Techniques and Catalysts
- Catalysts for Methane Reforming
- Ammonia Synthesis and Nitrogen Reduction
- Fuel Cells and Related Materials
- Catalysis and Hydrodesulfurization Studies
- Advanced battery technologies research
- Copper-based nanomaterials and applications
- Ionic liquids properties and applications
- X-ray Diffraction in Crystallography
- Advancements in Battery Materials
- Carbon dioxide utilization in catalysis
- Metal-Organic Frameworks: Synthesis and Applications
- Crystallization and Solubility Studies
- Luminescence Properties of Advanced Materials
- Nanocluster Synthesis and Applications
- Advanced Battery Materials and Technologies
- Perovskite Materials and Applications
- Electrochemical Analysis and Applications
- Advanced Nanomaterials in Catalysis
- Quantum Dots Synthesis And Properties
Sun Yat-sen University
2021-2025
Northwestern Polytechnical University
2025
Ministry of Industry and Information Technology
2025
Chinese Academy of Sciences
2015-2024
Northwest Institute of Eco-Environment and Resources
2020-2024
Institute of Advanced Science Facilities, Shenzhen
2021-2024
Taiyuan University of Technology
2024
Jinan University
2024
Institute of Automation
2024
Wuhan University
2024
Single-crystalline and uniform nanopolyhedra, nanorods, nanocubes of cubic CeO2 were selectively prepared by a hydrothermal method at temperatures in the range 100−180 °C under different NaOH concentrations, using Ce(NO3)3 as cerium source. According to high-resolution transmission electron microscopy, they have exposed crystal planes: {111} {100} for polyhedra, {110} rods, cubes. During synthesis, formation hexagonal Ce(OH)3 intermediate species their transformation into elevated...
We report a general synthesis of high-quality cubic (α-phase) and hexagonal (β-phase) NaREF4 (RE: Pr to Lu, Y) nanocrystals (nanopolyhedra, nanorods, nanoplates, nanospheres) NaYF4:Yb,Er/Tm (nanopolyhedra nanoplates) via the co-thermolysis Na(CF3COO) RE(CF3COO)3 in oleic acid/oleylamine/1-octadecene. By tuning ratio Na/RE, solvent composition, reaction temperature time, we can manipulate phase, shape, size nanocrystals. On basis its α → β phase transition behavior, along rare-earth series,...
The efficient use of natural gas will require catalysts that can activate the first C-H bond methane while suppressing complete dehydrogenation and avoiding overoxidation. We report single iron sites embedded in a silica matrix enable direct, nonoxidative conversion methane, exclusively to ethylene aromatics. reaction is initiated by catalytic generation methyl radicals, followed series gas-phase reactions. absence adjacent prevents C-C coupling, further oligomerization, hence, coke...
The electrochemical reduction of N
Coordinatively unsaturated (CUS) iron sites are highly active in catalytic oxidation reactions; however, maintaining the CUS structure of during heterogeneous reactions is a great challenge. Here, we report strategy to stabilize single-atom by embedding dispersed FeN4 centers graphene matrix. The atomic was revealed for first time combining high-resolution transmission electron microscopy/high-angle annular dark-field scanning microscopy with low-temperature tunneling microscopy. These...
A two-step synthesis method is used to prepare gold-on-ceria nanorods, nanocubes, and nanopolyhedra (see picture), a strong shape-effect of CeO2 on the water–gas shift reaction activity catalysts identified. Gold (110) facets ceria nanorods shows highest activity. Supporting information for this article available WWW under http://www.wiley-vch.de/contents/jc_2002/2008/z705828_s.pdf or from author. Please note: The publisher not responsible content functionality any supporting supplied by...
Coordinatively unsaturated Ni–N active sites facilitate CO<sub>2</sub>electroreduction and inhibit the competitive hydrogen evolution reaction, demonstrating selective high-rate CO<sub>2</sub>electroreduction.
We report that alkali ions (sodium or potassium) added in small amounts activate platinum adsorbed on alumina silica for the low-temperature water-gas shift (WGS) reaction (H(2)O + CO → H(2) CO(2)) used producing H(2). The ion-associated surface OH groups are activated by at low temperatures (~100°C) presence of atomically dispersed platinum. Both experimental evidence and density functional theory calculations suggest a partially oxidized Pt-alkali-O(x)(OH)(y) species is active site...
Abstract Two Pt single‐atom catalysts (SACs) of Pt‐GDY1 and Pt‐GDY2 were prepared on graphdiyne (GDY)supports. The isolated atoms are dispersed GDY through the coordination interactions between alkynyl C in GDY, with formation five‐coordinated 1 ‐Pt‐Cl 4 species four‐coordinated 2 Pt‐GDY2. shows exceptionally high catalytic activity for hydrogen evolution reaction (HER), a mass up to 3.3 26.9 times more active than state‐of‐the‐art commercial Pt/C catalysts, respectively. possesses higher...
Single-crystalline and monodisperse LaF3 triangular nanoplates (2.0 x 16.0 nm) in trigonal tysonite structure were synthesized by the thermolysis of a single-source precursor (SSP), La(CF3COO)3, hot oleic acid/octadecene solution. The combined use SSP coordinating noncoordinating solvents was demonstrated to have played key roles formation such high-quality nanoplates, which could spontaneously organize into two types superlattices (edge-to-edge face-to-face) on large area. This approach has...
Superefficient water-splitting materials comprising sub-nanometric copper clusters and quasi-amorphous cobalt sulfide supported on foam are reported. While working together at both the anode cathode sides of an alkaline electrolyzer, this material gives a catalytic output overall water splitting comparable with Pt/C–IrO2-coupled electrolyzer. As service to our authors readers, journal provides supporting information supplied by authors. Such peer reviewed may be re-organized for online...
High-density coordination unsaturated copper(<sc>i</sc>)–nitrogen embedded in graphene demonstrates a high performance and stability primary zinc–air batteries with ultralow catalyst loading.
Oxygen vacancy levels are monitored during the oxidation of CO by CeO(2-δ) nanorods and Au-CeO(2-δ) nanorods, nanocubes, nanopolyhedra using Raman scattering. The first-order CeO(2) F(2g) peak near 460 cm(-1) decreases when this reaction is fast (fast reduction relatively slow reoxidation surface), because lattice expansion that occurs Ce(3+) replaces Ce(4+) oxygen creation. This shift correlates with reactivity for oxidation. Increases in deficit δ as large ~0.04 measured relative to...
Contemporary thin-film photovoltaic (PV) materials contain elements that are scarce (CIGS) or regulated (CdTe and lead-based perovskites), a fact may limit the widespread impact of these emerging PV technologies. Tin halide perovskites utilize less stringently than lead (Pb) employed in mainstream perovskite solar cells; however, even today's best tin-halide thin films suffer from limited carrier diffusion length poor film morphology. We devised synthetic route to enable situ reaction...
Thermolysis of benzoylacetonate complexes proved successful in the synthesis rare-earth oxide nanocrystals. CeO2 nanopolyhedra, Eu2O3 nanodisks, and Pr2O3 nanoplates display 2D ordering on copper grids (see figure), former two show interesting optical properties arising from surface-modification effects.
Abstract Single-atom catalysts (SACs) exhibit intriguing catalytic performance owing to their maximized atom utilizations and unique electronic structures. However, the reported strategies for synthesizing SACs generally have special requirements either anchored metals or supports. Herein, we report a universal approach of electrochemical deposition that is applicable wide range supports fabrication SACs. The depositions were conducted on both cathode anode, where different redox reactions...
Abstract Electrocatalytic CO 2 reduction to emerges as a potential route of utilizing emitted . Metal‐N‐C hybrid structures have shown unique activities, however, the active centers and reaction mechanisms remain unclear because ambiguity in true atomic for prepared catalysts. Herein, combining density‐functional theory calculations experimental studies, well‐defined metal–N 4 sites were explored using metal phthalocyanines model The theoretical reveal that cobalt phthalocyanine exhibits...
Copper–ceria as one of the very active catalysts for oxidation reactions has been widely investigated in heterogeneous catalysis. In this work, copper oxide (1 wt % Cu loading) deposited on both ceria nanospheres with a {111}/{100}-terminated surface (1CuCe-NS) and nanorod exposed {110}/{100} faces (1CuCe-NR) have prepared investigation crystal plane effects CO oxidation. Various structural characterizations, especially including aberration-corrected scanning transmission electron microscopy...
Abstract Rh-based heterogeneous catalysts generally have limited selectivity relative to their homogeneous counterparts in hydroformylation reactions despite of the convenience catalyst separation catalysis. Here, we develop CoO-supported Rh single-atom (Rh/CoO) with remarkable activity and towards propene hydroformylation. By increasing mass loading, isolated atoms switch aggregated clusters different atomicity. During hydroformylation, Rh/CoO achieves optimal 94.4% for butyraldehyde...
The electrochemical CO2 reduction reaction (CO2 RR) to give C1 (formate and CO) products is one of the most techno-economically achievable strategies for alleviating emissions. Now, it demonstrated that SnOx shell in Sn2.7 Cu catalyst with a hierarchical Sn-Cu core can be reconstructed situ under cathodic potentials RR. resulting achieves high current density 406.7±14.4 mA cm-2 Faradaic efficiency 98.0±0.9 % at -0.70 V vs. RHE, remains stable 243.1±19.2 99.0±0.5 40 h -0.55 RHE. DFT...
The reaction of precursors containing both nitrogen and oxygen atoms with NiII under 500 °C can generate a N/O mixing coordinated Ni-N3 O single-atom catalyst (SAC) in which the atom be gradually removed high temperature due to weaker Ni-O interaction, resulting vacancy-defect -V SAC at Ni site 800 °C. For precursor simply atoms, only no-vacancy-defect Ni-N4 was obtained. Experimental DFT calculations reveal that presence dramatically boost electrocatalytic activity for CO2 reduction,...
Simultaneously achieving high Faradaic efficiency, current density, and stability at low overpotentials is essential for industrial applications of electrochemical CO2 reduction reaction (CO2 RR). However, great challenges still remain in this catalytic process. Herein, a synergistic catalysis strategy presented to improve RR performance by anchoring Fe-N sites with cobalt phthalocyanine (denoted as CoPc©Fe-N-C). The potential window CO efficiency above 90% significantly broadened from 0.18...