A5067166945- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Catalysts for Methane Reforming
- Electrocatalysts for Energy Conversion
- Catalysis and Hydrodesulfurization Studies
- Nanomaterials for catalytic reactions
- Mesoporous Materials and Catalysis
- Carbon dioxide utilization in catalysis
- Biodiesel Production and Applications
- Asymmetric Hydrogenation and Catalysis
- TiO2 Photocatalysis and Solar Cells
- Solar-Powered Water Purification Methods
- Advanced Photocatalysis Techniques
- Surface Modification and Superhydrophobicity
- Fluid Dynamics and Heat Transfer
- Fluid Dynamics Simulations and Interactions
- Advanced Nanomaterials in Catalysis
- Aerogels and thermal insulation
- Catalysis for Biomass Conversion
- Advanced Thermoelectric Materials and Devices
- Thermal properties of materials
- Copper-based nanomaterials and applications
- Electrohydrodynamics and Fluid Dynamics
- Chemical Synthesis and Reactions
- Gold and Silver Nanoparticles Synthesis and Applications
University of New Hampshire
2020-2024
Durham Technical Community College
2020
University of New Hampshire at Manchester
2020
Shanghai Jiao Tong University
2014-2019
Fuzhou University
2017
Tufts University
2007-2015
Fudan University
2004-2005
Addition of alkali metal ions significantly promotes the activity Pt/TiO2 catalyst for HCHO oxidation reaction by stabilizing an atomically dispersed Pt-O(OH)x species and opening a new low-temperature pathway. The Na-Pt-O(OH)x can effectively activate H2O catalyze facile between surface OH formate to total products.
Plasmonic gold nanoparticles self-assembled at the air–water interface to produce an evaporative surface with local control inspired by skins and plant leaves. Fast efficient evaporation is realized due instant localized plasmonic heating surface. The bio-inspired process provides alternative promising approach for evaporation, has potential applications in sterilization, distillation, heat transfer. As a service our authors readers, this journal supporting information supplied authors. Such...
We report that a small amount (<1 at%) of gold on ceria single crystals prepared as nanorods (10 ± 2.8 by 50–200 nm) {110} and {100} crystal surfaces shows excellent catalytic activity in both the steam reforming methanol (SRM) water gas shift (WGS) reactions at low temperatures (<250 °C). The bind stabilize atoms clusters nm, TEM invisible). On other hand, nanoparticles (∼3 are found nanocubes. Very rates SRM WGS were measured Au–ceria cubes, while rods least an order magnitude higher....
We report the activity of shape-controlled metal oxide (CeO2, ZnO and Fe3O4) supported gold catalysts for steam reforming methanol (SRM) water gas shift (WGS) reactions. Metal nanoshapes, prepared by controlled hydrolysis thermolysis methods, expose different crystal surfaces, consequently disperse stabilize differently. observe that similar to on CeO2 shapes exposing {110} {111} oxygen-rich {0001} Fe3O4 surfaces shows higher SRM WGS While reaction rates vary among Au–CeO2, Au–ZnO Au–Fe3O4...
Less is More: Atomically dispersed gold species catalyze the decomposition of formic acid through dehydrogenation pathway at near-ambient temperatures. Gold on ceria demonstrated to be an effective and stable catalyst. By using this catalyst, mechanistic insights are obtained that can lead use trace amounts achieve robust cost-effective catalysts. As a service our authors readers, journal provides supporting information supplied by authors. Such materials peer reviewed may re-organized for...
This report investigates the impact of droplet temperature on head-on collision binary droplets a superhydrophobic surface. Understanding is critical to many fundamental processes and industrial applications. There are factors, including speed, angle composition, that influence outcome between droplets. work provides first experimental study As increases, possibility increases for two coalesce after collision. The findings in this can be extended under other conditions where control...
In the present study we have found that gold supported on CeO2 and ZnO with well-defined crystal structures or shapes is an excellent catalyst for low-temperature (175−225 °C) steam reforming of methanol (SRM). We compared active nature dispersed {0001} surfaces nanorods polyhedra to our previous work, which demonstrates TEM-invisible {110} catalyzes SRM reaction in a cooperative mechanism CeO2. Similar Au−CeO2, Au−O bonds are essential species over Au−ZnO same apparent activation energy...
Zugesetzte Alkalimetallionen erhöhen die Aktivität des Pt/TiO2-Katalysators bei der HCHO-Oxidation erheblich, indem sie eine atomar dispergierte Pt-O(OH)x-Alkalimetall-Spezies stabilisieren und einen Niedertemperaturreaktionsweg öffnen. Die Pt-O(OH)x-Na-Spezies aktiviert H2O effektiv katalysiert einfache Reaktion zwischen Oberflächen-OH- Formiatspezies zu den Endprodukten.
A bioinspired surface evaporation approach with enhanced energy efficiency is demonstrated by W. Shang, T. Deng, and co-workers on page 3234. Inspired the biological processes, this uses self-assembled films of gold nanoparticles at air-water interface that confine plasmonic thermal to achieve efficient evaporation. The free-floating nature film also enables tracking evaporative retreating interface, which maximizes both usage materials for process.
A series of nickel- and iron-modified titanium dioxide (Ni-Fe/TiO2) are studied for the dry reforming methane (DRM) at 550 °C. Temperature-programmed surface reactions using CH4 CO2 as probe molecules, well activity results, confirmed that both conversion decreased with addition Fe. The XPS results obtained from reduced used catalysts suggested changes in nickel iron species. Characterizations, particularly thermogravimetric analysis (TGA) Raman spectroscopy over catalysts, revealed Fe can...
This paper studied the coalescence, spreading, and rebound of two droplets with different temperatures on a superhydrophobic surface. When temperature impacting droplet was same as that stationary droplet, there large deformation both before coalescence energy dissipation also large. The happened at time close to maximum spreading. increased, became smaller or even started spread. loss in later situation is less than those previous case. rebounding characteristics merged were found be...
Abstract We present how to calculate the weight fraction of anatase in physical anatase‐rutile mixture based on analysis Raman spectra. Raman‐based correlation is also applicable characterize quantitively from chemically synthesized titanium dioxide mixtures.
Copper‑titanium dioxide (Cu-TiO2) catalysts are pretreated with hydrogen‑helium and oxygen‑helium before evaluation of the carbon monoxide oxidation. Pre-reduced Cu-TiO2 showed higher initial overall activity than pre-oxidized catalysts. H2-TPR results revealed that copper species dispersed differently after pre-reduction pre-oxidation treatments. XPS confirmed Cu+ Cu2+ exist for both Meanwhile, IR suggested promote absorption CO, leading to increased reaction rates.
Nitrogen modified titanium dioxide (N-TiO<sub>2</sub>) improves the copper dispersion. Thereby, Cu–N-TiO<sub>2</sub> prevails over Cu–TiO<sub>2</sub> in CO oxidation.
Abstract The Ni–Ce–O mixed oxide catalysts prepared by oxalate gel-coprecipitation were found to be highly efficient for the catalytic combustion of methane. Particularly, relationship between microstrain NiO lattice due formation CexNi1−xOy solid solutions and performance oxides has been investigated as a function Ni/Ce ratio, showing that strain crystals plays significant role in methane reaction.