A5068667116- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Nanomaterials for catalytic reactions
- Catalysts for Methane Reforming
- Ammonia Synthesis and Nitrogen Reduction
- Advanced Photocatalysis Techniques
- Electrocatalysts for Energy Conversion
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Catalysis and Hydrodesulfurization Studies
- Copper-based nanomaterials and applications
- Luminescence Properties of Advanced Materials
- Mesoporous Materials and Catalysis
- Iron oxide chemistry and applications
- Hydrogen Storage and Materials
- Nanocluster Synthesis and Applications
- Magnetic Properties and Synthesis of Ferrites
- Catalysis for Biomass Conversion
- Perovskite Materials and Applications
- MXene and MAX Phase Materials
- Advanced Nanomaterials in Catalysis
- Surface Modification and Superhydrophobicity
- Gas Sensing Nanomaterials and Sensors
- Carbon dioxide utilization in catalysis
- Quantum Dots Synthesis And Properties
Shandong University
2016-2025
Offshore Renewable Energy Catapult
2024
Interface (United States)
2023
ORCID
2020
Chinese Academy of Sciences
2018
Max-Planck-Institut für Kohlenforschung
2009-2015
Max Planck Society
2009-2014
Guangdong Industry Technical College
2013
South China University of Technology
2013
Peking University
2004-2012
We develop a host-guest strategy to construct an electrocatalyst with Fe-Co dual sites embedded on N-doped porous carbon and demonstrate its activity for oxygen reduction reaction in acidic electrolyte. Our catalyst exhibits superior performance, comparable onset potential (Eonset, 1.06 vs 1.03 V) half-wave (E1/2, 0.863 0.858 than commercial Pt/C. The fuel cell test reveals (Fe,Co)/N-C outperforms most reported Pt-free catalysts H2/O2 H2/air. In addition, this cathode metal is stable...
Phosphate ions play a crucial role not only for the formation of spindlelike precursors single-crystalline hematite nanotubes that were synthesized by facile hydrothermal method. They are also important adsorption and coordination effects. The mechanism tube was deduced through EM observations as coordination-assisted dissolution process (see picture). Supporting information this article is available on WWW under http://www.wiley-vch.de/contents/jc_2002/2005/z463038_s.pdf or from author....
We present an innovative approach to the production of single-crystal iron oxide nanorings employing a solution-based route. Single-crystal hematite (alpha-Fe2O3) were synthesized using double anion-assisted hydrothermal method (involving phosphate and sulfate ions), which can be divided into two stages: (1) formation capsule-shaped alpha-Fe2O3 nanoparticles (2) preferential dissolution along long dimension elongated (the c axis alpha-Fe2O3) form nanorings. The shape is mainly regulated by...
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 Zn‐ and Na‐modulated Fe catalysts were fabricated by a simple coprecipitation/washing method. Zn greatly changed the size of iron species, serving as structural promoter, while existence Na on surface catalyst alters electronic structure, making very active for CO activation. Most importantly, structure suppresses hydrogenation double bonds promotes desorption products, which renders unexpectedly reactive toward alkenes—especially C 5+ alkenes (with more than 50% selectivity in...
Two comparable models of BiOI/BiOCl heterojuctions with different interface structures (crystal surface orientation and crystal combination), denoted as BiOI(001)/BiOCl(001) BiOI(001)/BiOCl(010), have been prepared via integrating heterojuncton nanostructure construction facet engineering. BiOI(001)/BiOCl(010) had a greater degree lattice mismatch displayed higher visible-light photocatalytic activity than BiOI(001)/BiOCl(001). In general, the photocatalyst (ηPC) has positive correlation...
Copper-ceria is one of the very active catalysts for preferential oxidation carbon monoxide (CO-PROX) reaction, which also a typical system in complexity copper chemistry clearly exhibited. In present manuscript, copper–ceria with different Cu contents up to 20 wt % supported on CeO2 nanorods were synthesized by deposition–precipitation (DP) method. The as-prepared samples characterized various structural and textural detections including X-ray diffraction (XRD), Vis-Raman, transmission...
Co3O4 with a spinel structure is very active oxide catalyst for the oxidation of CO. In such catalysts, octahedrally coordinated Co3+ considered to be site, while tetrahedrally Co2+ assumed basically inactive. this study, highly ordered mesoporous CoO has been prepared by H2 reduction nanocast at low temperature (250 °C). The as-prepared material, which rock-salt single lattice oxygen in Fm3̅m symmetry, exhibited unexpectedly high activity CO oxidation. Careful investigation catalytic...
We present a systematic investigation of the microscopic mechanism interface interaction, charge transfer and separation, as well their influence on photocatalytic activity heterojunctions by combination theoretical calculations experimental techniques for g-C3N4–ZnWO4 composite. HRTEM results DFT mutually validate each other to indicate reasonable existence g-C3N4 (001)–ZnWO4 (010) (011) interfaces. The show higher degradation MB than pure ZnWO4 under visible-light irradiation. Moreover,...
Fabricating heterojunction photocatalysts is an important strategy for speeding up the separation rate of photogenerated charge carriers, which attracting greater interest. However, choice three factors, individual materials, band offsets, and effective interfaces, still fabricating efficient photocatalysts. Herein, g-C3N4/Zn2GeO4 with interfaces were designed by controlling surface charges two materials inside same aqueous dispersion medium, making use electrostatic attraction between...
For high-temperature catalytic reaction, it is of significant importance and challenge to construct stable active sites in catalysts. Herein, we report the construction sufficient copper clusters copper‒ceria catalyst with high Cu loading (15 wt.%) for reverse water gas shift (RWGS) reaction. Under very harsh working conditions, ceria nanorods suffered a partial sintering, on which 2D 3D were formed. This partially sintered exhibits unmatched activity excellent durability at temperature. The...
Abstract Small-size (<5 nm) gold nanostructures supported on reducible metal oxides have been widely investigated because of the unique catalytic properties they exhibit in diverse redox reactions. However, arguments about nature active site continued for two decades, due to lack comparable catalyst systems with specific species, as well scarcity direct experimental evidence reaction mechanism under realistic working conditions. Here we report determination contribution single atoms,...
The crucial role of the metal-oxide interface in catalysts water-gas shift (WGS) reaction has been recognized, while precise illustration intrinsic at interfacial site scarcely presented. Here, two kinds gold-ceria with totally distinct gold species, <2 nm clusters and 3 to 4 particles, were synthesized as for WGS reaction. We found that cluster catalyst exhibited a superiority reactivity compared nanoparticles. With aid comprehensive situ characterization techniques, bridged -OH groups...
Catalysts for CO oxidation reaction are mainly based on oxide/hydroxide materials with multicomponent active sites. Here, we report a nonoxide/hydroxide material, atomically dispersed dual-metal single sites (Fe–Co sites) N-doped carbon support, as highly catalyst oxidation. It can greatly lower the temperature complete conversion low −73 °C turnover frequency of 0.096 s–1. X-ray absorption near-edge structure spectra, pulse-adsorption microcalorimetry, and density functional theory studies...
In heterogeneous catalysis, the interface between active metal and support plays a key role in catalyzing various reactions. Specially, synergistic effect metals oxygen vacancies on can greatly promote catalytic efficiency. However, construction of high-density metal-vacancy sites catalyst surface is very challenging. this work, isolated Pt atoms are first deposited onto thin-layer MoO3 stabilized γ-Mo2N. Subsequently, Pt-MoOx/γ-Mo2N catalyst, containing abundant cluster-oxygen vacancy...
Abstract Oxygen vacancy (O v ) is an anionic defect widely existed in metal oxide lattice, as exemplified by CeO 2 , TiO and ZnO. As O can modify the band structure of solid, it improves physicochemical properties such semiconducting performance catalytic behaviours. We report here a new type intrinsic part perfect crystalline surface. Such non-defect stems from irregular hexagonal sawtooth-shaped (111) plane trivalent rare earth oxides (RE 3 ). The materials with exhibit excellent ammonia...
Dual active sites with synergistic valence state regulation under oxidizing and reducing conditions are essential for catalytic reactions step-wise mechanisms to modulate the complex adsorption of reactant molecules on surfaces heterogeneous catalysts maximized performances, but it has been rarely explored. In this work, uniformly dispersed CuCo alloy CoO nanosheet composite dual constructed, which shows huge boost in activity catalyzing water-gas shift reaction (WGSR), a record high rate...
SnO2 nanorod arrays were hierarchically assembled onto the surface of alpha-Fe2O3 nanotubes via a facile solution method. Determined by hexagonal geometrical nature nanotubes, heterostructures 6-fold symmetry. HRTEM characterizations demonstrated that lattice mismatch at interface was an important factor in determining growth direction secondary arrays.
A high surface area Co(3)O(4)-SiO(2) nanocomposite catalyst has been prepared by use of activated carbon as template. The composite, the which is rich in silica and Co(II) species compared with normal Co(3)O(4), exhibited very activity for CO oxidation even at a temperature low -76 °C. rather unusual temperature-dependent curve, lowest conversion about 80 °C, was observed feed gas (H(2)O content ~3 ppm). U-shape curve indicates negative apparent activation energy over certain range, rarely...
Highly ordered mesoporous NiFe(2)O(4) with excellent microwave absorption properties has been synthesized by using silica (KIT-6) as a hard template.
ZnWO4/BiOI heterostructures with different constituents are synthesized via a chemical bath approach under mild conditions by tuning the Zn/Bi molar ratios. The obtained display high photocatalytic activities in degradation of MO and photocurrent response visible light irradiation. Combining experimental findings, first-principles calculations used to investigate surface geometry structures work functions (011) (010) surfaces ZnWO4 phase (001) BiOI phase. results show that lattice energy...
The shape of gold: title catalyst has been prepared through a colloidal deposition method. Scanning transmission electron microscopy studies confirmed that for the catalyst, gold clusters with bilayer structure and diameter about 0.5 nm are not mandatory to achieve high activity (see image).