Dissertation > Excellent graduate degree dissertation topics show

Modified Electrode of Rhodium (Ⅲ) Chloro Complex of 1, 2-Naphthoquinone-1-oxime

Author: LiuJingJing
Tutor: LiuXiaoXia
School: Northeastern University
Course: Physical and chemical
Keywords: 1,2-naphthoquinone-1-oxime 4-vinylpyridine rhodium complex modified electrode electrocatalysis
CLC: O627.8
Type: Master's thesis
Year: 2009
Downloads: 7
Quote: 0
Read: Download Dissertation

Abstract


1,2-naphthoquinone-mono-oximes (nqo) are good bidentate ligands to transition metals. The complexes of nqo, similar to 2,2’-bipyridine complexes which are excellent electrocatalysts, exhibited various electron-transfer behaviors. Glass carbon (GC) electrode was modified by rhodium cholor complex of 1,2-naphthoquinone-1-oximes (1-nqo) [Rh(vpy)2(1-nqo)Cl2] (vpy=4-vinylpyridine; 1-nqo=1,2-Naphthoquinone-1-Oxime). Electrocativities and electrocatalytic properties of the modified electrode were investigated in this thesis.On the cyclic voltammogram of the modified electrode C/[Rh(vpy)2(1-nqo)Cl2] in aqueous solution of 0.1 mol·dm-3 NaAc, peaks of reduction of Rh(Ⅲ) and reoxidation of the produced Rh(Ⅰ) complex on the electrode appeared at -0.45 and 0.34 V (vs. SCE), respectively. While the redox pair related to 1-nqo ligand appeared at -1.30 V. Upon successive cyclic voltammetric scans, a new redox pair appeared at -0.56 V due to the production of rhodium hydride complex.The modified electrode C/[Rh(vpy)2(1-nqo)Cl2] showed good electrocatalytic properties for electrochemical reduction of formic acid, oxalic acid and cyclohexanone in 0.1 mol·dm-3 NaAc. The reductive currents on the modified electrode were linearly with concerntrations of formic acid and oxalic acid in the range of 2.67～141.7 mmol·dm-3 and 2.0～20.00 mmol·dm-3, respectively. Reduction of formic acid, oxalic acid and cyclohexanone were performed at -0.9 V on the modified electrode. Formaldehyde and cyclohexanol were produced by electrochemical reduction of formic acid and cyclohexanone, based on gas chromatography (GC) analyses. The reduction product of oxalic acid is postulated glyoxylic acid.

Related Dissertations

  1. Preparation, Characterization and Application of Prussian Blue Composite Nanomaterials,TB383.1
  2. Spectral and Electrochemical Research of Epirubicin Hydrochloride with Its Analytical Application,TQ465
  3. Research on Detection of the Carbamate Pesticides by Aminoacids-matal Ions Films Chemically Modified Sencor,S481.8
  4. Synthesis of Platinum-based Composite Catalysts and Their Electrocatalytic Properties for Methanol Oxidation,TM911.4
  5. Determination of Small Biomolecules and Drug Molecule by Acylpyrazolone Composite Film Modified Glassy Carbon Electrode,TQ460.1
  6. Functional Materials Modified Electrode and Its Application,TB34
  7. Preparation and Application of Poly(4-vinylpyridine) Quasi-solid Electrolyte,TM914.4
  8. Preparation and Characteristic of Molecular Imprinted Polymers in Supercritical Carbon Dioxide,O631.3
  9. Studies on the Electron Transfer of Metal Porphyrin and Other Compounds at Interface,O621.1
  10. Electrocatalysis of High Surface Area Activated Carbon Modified Electrode,O657.1
  11. Poly- amino acid modified electrode in Electroanalytical Chemistry,O657.1
  12. Research on Detection of Organic Phosphorus Pesticides Through Preparation of Enzyme-free Sensors by Application of Dye Modification,TS207.53
  13. Platinum- palladium alloy films (electric) chemical vapor deposition and electro-catalytic infrared spectroscopy,O643.36
  14. Study on the Electrochemical Behavior and Analytical Determination of Compounds Containing Nitro-group with Prussian Blue Analogue Chemically Modified Electrode,O646.54
  15. The Preparation and Electrocatalytic Application of Metal Hexaycnaoefrrate Modified Electrodes,O646.5
  16. Stainless steel base Sb-doped SnO_2 anode preparation and catalytic properties,X703
  17. Capillary Electrophoresis with Amperometric Detection and Its Application,O658.9
  18. Study of the New Electrochemical Sensors Bazed on the Electrodeposition Nano-Copper,TP212.2
  19. Research on the Polymerization and Properties of Nanostructured Polypyrrole,TB383.1
  20. Preparation of Novel Carbon Nano-Materials Modified Electrods and the Study of Their Application in Biosensing,TB383.1
  21. Preparation and Electrochemical Study of Carbon Nanotube Electrodes Modified with Layered Double Hydroxides-Intercalation Compounds,TB383.1

CLC: > Mathematical sciences and chemical > Chemistry > Organic Chemistry > Elements in organic compounds > Ⅷ of group elements, organic compounds
© 2012 www.DissertationTopic.Net  Mobile