Dissertation > Excellent graduate degree dissertation topics show

Metallic Nanomaterials: Synthesis and Catalytic Application

Author: HongHaiYan
Tutor: GuHongWei
School: Suzhou University
Course: Applied Chemistry
Keywords: Metallic Nanomaterials Nanowires Cartalysis Oxidation Hydrogenation Photodecomposition
CLC: TB383.1
Type: Master's thesis
Year: 2011
Downloads: 108
Quote: 1
Read: Download Dissertation

Abstract


Nano-materials with a huge surface area, excellent oriented adsorption effect and quantum size effects, are expected to act as catalysts with high efficiency, high selectivity for the molecular transformation.Here, we reported the wet-chemical synthesis of Pt @ Fe2O3, FePt @ Cu and Pt nanowires with narrow size-distributation via thermal decomposition method. These nanowires were characterized by transmission electron microscopy （TEM）, X-ray diffraction （XRD）, energy dispersive X - ray analysis （EDS）, respectively. We further analysized the catalytic abilities of these nanowires （NWs） in the oxidation and reduction reactions.（1） Pt@Fe2O3 nanowires with 3 nm in diameter were firstly synthesized via thermal decomposition and surface oxidation methods for selective oxidation of olefins and alcohols. We optimize the reaction conditions on the reaction solvent, temperature, and oxidant. Compared with the previous reported Fe2O3 nanoparticles or Au nanoparticles, our nanowires shown higher catalytic abilities and longer stabilities.（2） FePt@Cu nanowires were successfully synthesized via surface deposition of Cu on FePt nanowires. These nanowires were acted as catalysts for epoxidation of trans-1,2-stilbene. Our study revealed that solvent acted as key role in the oxidation process and this oxidation process underwent a solvent involved free-radical oxidation mechanism. FePt@Cu nanowires were very stable and can be recycled for multiple times without activities lose. This is the first time reported the nano-copper catalysts for the double bond epoxidation.（3） Pt NWs with 2nm in diameter was successfully synthesized for alkenes and alkynes hydrogenation. These nanowires show the highest catalytic activities and more than 50% of C = C and C≡C bonds could be reduced to C-C in several minutes. Furthermore, aromatic rings such as aniline and phenol could be reduced at relatively low pressure and temperature while using acetic acid as solvent and aluminum chloride as co-catalyst.（4） Pt nanowires were further used as photocatalysts for photodecomposition of dye waste water.

Related Dissertations

  1. Effects of N Addition on Soil Soluble Nitrogen and CH4 Oxidation of Upland in Subtropical,S714
  2. Studies on the Mechanism and Application of Bacillus Subtilis Lipopeptide Anti-Aeromonas Hydrophila,S948
  3. Study on Electrochemistry and Raman Spectrum of Picoline Electro-Oxidation Beavior in Non-aqueous System,O626.321
  4. High hydrothermal stability of nickel-based catalyst and hydrogenation of butyne diol,TQ223.162
  5. Germanium and its oxide nanowire synthesis, characterization and properties of,TB383.1
  6. Study of Correlation of Oxidative Stress and the Coagulopathy in Diabetes Patients,R587.1
  7. Synthesis, Characterization and Properties of One-dimensional Silicon Carbide Nanomaterials,TB383.1
  8. Electrocatalytic Oxidation of Dyes Using Cobalt Phthalocyanine Modified Activated Carbon Fiber Electrode,X791
  9. Study on Chemical Coloring and Sealing Processing of Stainless Steel,TG177
  10. The Oxidation and Creep Behaviors of P92 Steel in Steam at 600℃,TG142.15
  11. The Study of Microstructure and Performance of La2 O3+CeO2-Ni-WC Composite Coating by Vacuum Fusion Sintering,TG174.44
  12. Characterization of Dissolved Organic Pollutants in Bio-Treated Effluents of Dyeing and Textile Wastewater and Removal Behavior during Coagulation Process,X791
  13. Microstructure and Properties of 9Cr-ODS RAFM Prepared by PM,TG142.1
  14. Light Hydrocarbon Synthesis from Syngas on Fe-based Catalyst,TQ426.94
  15. Preparation of Wuyi Rock Tea Lactobacillus Fermented Beverage,TS275.4
  16. Study on Treatment Processes of the Wastewaters from Heat-Sensitive Dyes Production,X791
  17. Electric iron chrome aluminum alloy surface insulation and anti-oxidation mechanism,TG132.3
  18. Research on the Metal Erosion-corrosion Base on a Failure Analysis about the Elbow,TG172
  19. Pilot Plant Research on Hydrolysis & Micropore Aeration Integral Combined Oxidation Ditches in the Process of Municipal Sewage Treatment with Low C/N Ratio,X703
  20. Silica- supported metal ball and Electrochemical Properties,TB383.1
  21. Steady-state, Dynamic Simulation and Optimization of Acetylene Hydrogenation Reactor in Ethylene Plant,TQ221.211

CLC: > Industrial Technology > General industrial technology > Materials science and engineering > Special structural materials
© 2012 www.DissertationTopic.Net  Mobile