Dissertation > Excellent graduate degree dissertation topics show

Synthesis, Characterization, and Biosensing Application of Nanomaterials

Author: ChenXiaoHua
Tutor: HuJianQiang
School: South China University of Technology
Course: Analytical Chemistry
Keywords: Nanomaterials Bi4Ti3O12 sub-microspheres ZnO/SnO2 Composite nanomaterial Biosensor based on nanomaterials Electrochemistry and electrocatalysis
CLC: TB383.1
Type: Master's thesis
Year: 2010
Downloads: 250
Quote: 0
Read: Download Dissertation

Abstract


Nanomaterials have offered a good platform for the development of electrochemical biosensors. Now, the performance of biosensors has greatly improved through using nanomaterials because nanomaterials possess unique physical and chemical properties. for example, these biosensors based on nanomaterials have high sensitivity, fast response, wide linear range, well selectivity and high stability. The major results of the thesis are as follows:1. Nanoplated bismuth titanate sub-microspheres （NBTSMs） were for the first time synthesized by a facile hydrothermal synthesis strategy. The NBTSMs were employed as a supporting matrix to explore a novel immobilization and biosensing platform of redox proteins through a combined hydrogen bond and electrostatic assembly process. The NBTSMs-based composite film has good biocompabiliity, direct electron transfer capacity, and good electrocatalytic properties such as wide linear range （2-430μM）, low detection limit （0.46μM）, low Michaelis-Menten constant （204μM）, and good stability and reproducibility.2. ZnO/SnO2 Composite nanomaterials were prepared with SnO2 nanorods as the template via a secondary growth methode. A completely new biosensor composed of ZnO/SnO2 composite nanomaterials, chitosan, and hemoglobin was fabricated. The ZnO/SnO2-based composite film has good biocompabiliity, direct electron transfer capacity, and good electrocatalytic properties such as wide linear range （2-370μM）, low detection limit （0.57μM）, and good stability and reproducibility.3. A new biosensor composed of cube-shaped AucoreCo3O4shell nanoparticles, polyacrylic acid （PAA）, and horseradish peroxidase （HRP） was fabricated. The biocompatibility and electrochemical properties of the resulting AucoreCo3O4shell-PAA-HRP composite film were studied by UV-visible spectroscopy, electrochemical impedance spectroscopy, and cyclic voltammetry. The immobilized HRP shows a pair of quasi-reversible redox peaks at -0.31 V in 20 mM PBS （pH 7.0）, and the biosensor shows a fast amperometric response to hydrogen peroxide with a linear range of 2-370μM. The kinetic parameters such as ks （electron transfer rate constant） and KM （Michaelis–Menten constant） are evaluated to be about 7.4 s-1 and 0.91 mM, respectively.

Related Dissertations

  1. Preparation, Characterization and Application of Prussian Blue Composite Nanomaterials,TB383.1
  2. Eu 3 and nano Eu 2 O 3 of human hepatocytes and hepatoma cell growth,R735.7
  3. Ceria -based materials Preparation and Characterization of Its Properties,TB383.1
  4. Preparation of tungsten oxide based nanomaterials and gas properties,TB383.1
  5. Low- dimensional Nanomaterials solid state synthesis and characterization,TB383.1
  6. Influence of Doping Effect on Zinc Oxide by First Principles Studies,O614.241
  7. Study on Preparation of Nano-modified Plant Molluscicide and Its Molluscicidal Synergistic Properties,TQ453
  8. Synthesis, Characterization and Catalytic Properties of Vanadium Oxide Nanomaterials,TB383.1
  9. Synthesis, Characterization of Co3O4 /Al2O3 Nanomaterials and Catalytic Degradation on Rhodamine B,TB383.1
  10. One -dimensional properties of the material humidity,TB383.1
  11. Antibacterial Activity of Four Oxide Nanomaterials Against Escherichia Coli During Natural Aggregation and Deposition Processes,R318.08
  12. Hemoglobin Immobilization and peroxidase activity,Q814
  13. Study on Preparation and Performance of the New Textile Size,TS103.846
  14. Hydrothermal/solvothermal Synthesis, Characterization and Performance Research of Transitional Metal-based Micro-/nano- Materials,TB383.1
  15. Studying on the Preparation of Nanoscale Aluminum Magnesium Hydroxide Powders and Its Sol Adsorption of Heavy Metal Cation,TB383.1
  16. Preparation and Properties of Semiconductor Nanomaterials,TB383.1
  17. Morphology Control and Properties of Organic Nano and Micro Structures Based on Benzoylated Bacterial Cellulose,TB383.1
  18. Preparation and Luminescence Properties of SnO2 Nano-materials and Eu3+-doped SnO2 Nano-Particles,TB383.1
  19. Synthesis of Gold Nanocluster and Silver Nanofiber and Its Application in Biomedicine,TB383.1
  20. Different morphologies SiO_2 Nanomaterials and fluorescent particles are used for the detection of E. coli,TB383.1
  21. Modification of Titanium Dioxide and Its Photoelectrochemical Properties,O614.411

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