Dissertation > Excellent graduate degree dissertation topics show

The Synthesis and Characteristic of Metal Sulfide or Oxide (M=Fe, Co, Ni) Nanostructures

Author: AnLiNa
Tutor: DongWenJun
School: Zhejiang University of Technology
Course: Applied Chemistry
Keywords: Morphology Hydrothermal Fluorescence Growth mechanism Photocatalyst
CLC: TB383.1
Type: Master's thesis
Year: 2011
Downloads: 111
Quote: 0
Read: Download Dissertation

Abstract


Metal sulfide or oxide （M=Fe, Co, Ni） nanostructure have shown excellent electrical, optical, magnetic properties. Scientists pay more attentions to the morphologies of materials beacause the structure, morphology and size of the nanostructure have close relationship to their properties. In this paper, we adopted hydrothermal synthesis method to prepare the petal-, urchin- and sphere-like nickel sulfide, cobalt sulfide with hollowed-out surface nanostructures and ferric oxide nanocapsule.1. A facile hydrothermal method has been developed for synthesis of nickel sulfide micro/nanostructure using Ni（NO3）2·6H2O as nickel source, S=C（NH2）2 as sulfur source and 1, 2-ethylenediamin/sodiumdodecyl sulfate as surfactant. Different morphologies such as petal-, urchin- and sphere-like nickel sulfide structures have been synthesized by tuning the reaction time, reaction temperature, and the surfactant. The relationship of the fluorescence properties with their morphology and phase was studied, and the possible growth mechanism of nickel sulfide structure was proposed based on the morphology evolution of nickel sulfide.2. Well-defined cobalt sulfide with hollowed-out surface nanostructures was successfully prepared by a facile one-step bottom-up approach, employing Co（NO3）2·6H2O as a cobalt precursor and thiourea as a sulfur source, and a mixed solvent of distilled water and ethanol as reaction solvent without any surfactant. The volume ratio of distilled water to ethanol played an important role in the formation of morphology, as well as reaction time and temperature. And the electrochemical capacitance performance of cobalt sulfide cubes with hollowed out on each face was studied. The results illustrated that the as-prepared cobalt sulfide cubes have excellent electrochemical capacitive characteristic.3. A facile hydrothermal method has been developed for synthesis ofα-Fe2O3 nanocapsule using FeCl3·6H2O as iron source with 4, 4-bipyridine and S=C（NH2）2 as template, and then theα-Fe2O3 capsule was coated with TiO2 to obtain Fe3O4@TiO2 core-shell structure. Then the Fe2O3@TiO2 core-shell product was reduced to Fe3O4@TiO2 core-shell structures at 300°C under continuous hydrogen flow. The Fe3O4@TiO2 core-shell structure can be used as photocataluyst and magneton simultaneity in the solution, which can improve the photocatalytic efficiency greatly.

Related Dissertations

  1. Hydrothermal Synthesis of Oxide Hollow Spheres,TB383.4
  2. Photosynthetic Apparatus Response to Heat Stress and the Mechanisms in Two Different Cotton with Various Leaf Colours,Q945.11
  3. Flexible,rigid,Synthesis and characterization of mixed ligand complexes,O621.1
  4. Indirect Imaging of Singlet Oxygen Generation from a Single Cell,Q2-3
  5. Study on the Algae-Lytic Mechanism of Algicidal Bacteria on Microcystis Aeruginosa and the Algiciadal Substance Characteristics,X173
  6. Syntheses, Structures and Properties of Metal-organic Frameworks Based on Dicarboxylate Ligands,O621.13
  7. Polycyclic aromatic hydrocarbons degradation of the growth characteristics of bacteria in soil remediation,X172
  8. Syntheses, Structures and Properties of Coordination Polymers with Aromatic Dicarboxylates,O631.1
  9. Syntheses, Structures and Properties of Metal-organic Coordination Polymers Based on Long-Chain Aromaticmulticarboxylate,O631.3
  10. Synthesis and Properties of Polymeric Dissolved Oxygen Sensor Based on Porphyrin Unit,TP212.2
  11. Hydrthermal Synthesis Alkaline Fluroides Nanomaterlas and Host for Lanthaide Near-Infrared Luminecent Properties,TB383.1
  12. Acoustic Emission Detection Technology in Applications of Synthetic Diamond Research,TQ164
  13. Synthesis and Luminescence Properties of Gd, Eu Co-doped LaPO4,O614.331
  14. Comparison of color words Korea,H55
  15. Cultural factors on the impact of foreign language teaching grammar,H195
  16. Research for Establishment of the SAMP1 Mouse Embryonic Stem Cell Line,R329
  17. Study of Tyrosine On-Line Fluorescence Spectrum under High Pressure,O657.31
  18. Synthesis and Property Study of Polyoxotungstates and Polyoxomolybdates Decorated by Transition Metal and Organic Amine,O611.4
  19. Study on Kinetics and Morphology of Calcium Carbonate Precipitation Catalyzed by Bacterial Carbonic Anhydrase,O643.32
  20. Organic two types of novel structures of boron trifluoride complexes Synthesis and Properties,O641.4
  21. Facile Synthesis of Cuprous Oxide Nanocomposites and Photocatalytic Properties,O643.36

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