A5024493711- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Catalysis and Hydrodesulfurization Studies
- Catalysts for Methane Reforming
- 2D Materials and Applications
- Graphene research and applications
- Inorganic Fluorides and Related Compounds
- MXene and MAX Phase Materials
- ZnO doping and properties
- Electrocatalysts for Energy Conversion
- Gas Sensing Nanomaterials and Sensors
- Luminescence Properties of Advanced Materials
- Advanced Photocatalysis Techniques
- Nanomaterials for catalytic reactions
- Catalysis for Biomass Conversion
- Mesoporous Materials and Catalysis
- Copper-based nanomaterials and applications
- Boron and Carbon Nanomaterials Research
- Advancements in Solid Oxide Fuel Cells
- Industrial Gas Emission Control
- Thermal and Kinetic Analysis
- Carbon Dioxide Capture Technologies
- TiO2 Photocatalysis and Solar Cells
- Electronic and Structural Properties of Oxides
- Ammonia Synthesis and Nitrogen Reduction
Hunan University
2025
Wuhan University of Technology
2025
Zhejiang Normal University
2015-2024
Shanghai Technical Institute of Electronics & Information
2022-2023
Harbin Institute of Technology
2022
University of Science and Technology Beijing
2022
Space Engineering University
2022
Jinhua Academy of Agricultural Sciences
2016-2021
Dalian Institute of Chemical Physics
2000-2021
Ministry of Education of the People's Republic of China
2021
Surface properties of rare-earth (RE) doped ceria (RE = Sm, Gd, Pr, and Tb) were investigated by UV (325 nm) visible (514, 633, 785 Raman spectroscopy, combined with UV-vis diffuse reflectance high-resolution transmission electron microscopy, X-ray photoelectron spectra techniques. It was found that the optical absorption property samples, wavelength detecting laser line, inhomogeneous distribution dopants significantly affected obtained surface information, namely, peak intensity shape at...
A series of Ce(1-x)M(x)O(2-δ) (M = Gd, Zr, La, Sm, Y, Lu, and Pr) samples were characterized by Raman spectroscopy to investigate the evolution defect sites (oxygen vacancies MO(8)-type complex) their distributions in samples. It was found that oxygen due different ionic valence state dopant from Ce(4+), while complex radius Ce(4+). The investigated using 325 514 nm excitation laser lines, indicating surface enriched. Moreover, increasing ordering level sample led a decline concentration but...
The Pt catalysts supported on hexagonal BN (Pt/BN) are highly active and stable for propane combustion, with the highest specific reaction rate of 92.3 μmol gPt–1 s–1 turnover frequency 0.037 obtained a 0.2Pt/BN catalyst at 220 °C. oxide in could be partially reduced to metallic state by during reaction, which is beneficial improvement activity, indicating that might sites. dispersed particles stabilized grain boundary more easily than those surface thus active. Moreover, kinetic...
The utilization of weak interactions to improve the catalytic performance supported metal catalysts is an important strategy for design, but still remains a big challenge. In this work, nearby Pd nanoparticles (NPs) are finely tuned by using series imine-linked covalent organic frameworks (COFs) with different conjugation skeletons. NPs embedded in pyrene-COF ca. 3 10-fold more active than those COFs without pyrene hydrogenation aromatic ketones/aldehydes, quinolines and nitrobenzene, though...
A Ce0.9Pr0.1O2-δ solid solution was prepared by a sol−gel method. Changes in microstructure of the under different atmospheres (O2, He, and H2) temperatures were characterized an situ X-ray diffraction (XRD) technique. Raman peaks at 460 cm-1 ascribed to F2g vibration mode CeO2 fluorite structure 570 oxygen vacancies studied spectroscopy using 785- 514-nm excitation laser lines, providing bulk surface information, respectively. With 785-nm line, A570/A460 ratio reflecting concentration...
Ce0.9Pr0.1O2-δ, Ce0.95Cu0.05O2-δ, and Ce0.9Pr0.05Cu0.05O2-δ mixed oxides pure CeO2 were prepared with a sol−gel method characterized by XRD, in situ Raman, DRIFTS techniques. The XRD results confirmed the formation of Ce−Pr−O solid solution. Raman indicated that higher concentration oxygen vacancies was obtained on Pr-doped samples compared to Ce0.95Cu0.05O2-δ samples. Surface chemical states Ce0.9Pr0.1O2-δ determined spectroscopy, which surfaces two both close oxidation state during...
A series of CuO/CeO2 and inverse CeO2/CuO catalysts were prepared by an incipient wetness impregnation method tested for CO oxidation. Crystallite sizes CeO2 CuO evaluated X-ray diffraction N2O chemisorption, as well transmission electron microscopy. It was found that a CuO(5)/CeO2-500 catalyst with crystallite size 4.1 nm CeO2(5)/CuO-500 4.0 had identical activities, indicating the reaction may occur at interface CuO−CeO2. According to turnover frequency based on sites located CuO−CeO2...
Nanosized CuO−CeO2 catalysts with high surface area (>90 m2 g-1) were prepared by a modified citrate sol−gel method incorporation of N2 thermal treatment. CO temperature-programmed reduction results indicated that there are three CuO species in the catalyst, namely, finely dispersed CuO, bulk and Cu2+ CeO2 lattice. Using oxidation as model reaction, catalytic activity each was evaluated. It found had highest (183.3 mmolCO gCu-1 h-1) medium (100.4 h-1), while lattice lowest (21.3 h-1)....
DyVO4/graphitic carbon nitride (DyVO4/g-C3N4) composite photocatalyst with visible-light response was prepared by a milling and heating treatment method. The synthesized powder characterized X-ray diffraction, thermogravimetry/differential thermal analysis, N2 adsorption, Fourier transform infrared spectroscopy, photoelectron scanning electron microscopy, transmission UV–vis diffuse reflection spectroscopy. activity of DyVO4/g-C3N4 for photodegradation rhodamine B is much higher than that...
The PdO/Ce1–xPdxO2−δ catalyst prepared by a solution-combustion method contained free surface PdO species and in Ce1–xPdxO2−δ solid solution, whereas the PdO/CeO2 an impregnation only species. could be removed nitric acid. Contributions of to catalytic CO oxidation were quantitatively evaluated. had highest activity (969.3 μmolCO gPd–1 s–1), those medium (109.0 solution lowest (13.2 s–1). Synergetic effects responsible for enhanced reactivity catalyst, as provided chemisorption sites...
Mesocellular silica foam (MCF) materials with different pore volumes were prepared and modified tetraethylenepentamine (TEPA) as sorbents for CO2 capture. The as-prepared characterized by XRD, TEM, SEM, nitrogen adsorption/desorption, FTIR. capture performances of the adsorbents tested in a fixed-bed reactor equipped an online MS. results indicated that volume supports has great effect on performance. With increasing well window cell sizes MCF, more TEPA can be loaded into pores MCF. For MCF...
Selective hydrogenation of α,β-unsaturated aldehydes to unsaturated alcohols is important for the synthesis fine chemicals, yet very challenging. Herein, we reported a metal-free CeO2 nanorods (r-CeO2) catalyst gas-phase transformation crotonaldehyde crotyl alcohol with highest selectivity 93.2% at 323 K. Compared nanocubes and nanopolydra, r-CeO2 shows much higher production rate, comparable turnover frequency those noble-metal-based catalysts, high selectivity. This can be associated...