Dissertation > Excellent graduate degree dissertation topics show

Synthesis and Photocatalytic Properties of Metal-tetra(1, 4-dithiin)porphyrazine Bearing Peripheral Tetrapropyl-bromine

Author: TangJunFeng
Tutor: DengKeJian
School: Central South University for Nationalities
Course: Organic Chemistry
Keywords: Tetrapropyl-bromine-tetra(1,4-dithiin)-porphyrazine Synthesis and characterization Activate molecular oxygen Activate hydrogen peroxide Photocatalytic degradation Rhodamine B Phenol Imidazo Substitute
CLC: O627
Type: Master's thesis
Year: 2009
Downloads: 23
Quote: 0
Read: Download Dissertation

Abstract


The global attention to water pollution has become a key task in recent years. Biomimetic photocatalysis differs from other water treatment processes. It has extensive worthiness of research and applicable prospects for degrading toxic organic pollutants in the wastewater by mimicking the oxidative characteristics of iron-containing oxygenase enzymes under mild conditions.Iron(II) tetra(1,4-dithiin)-porphyrazine (abBreviated as FePz(dtn)4) has a closely fused macrocyclic skeleton with an extended delocalized 18π-electron conjugated macrocyclic system. Its photocatalytic performance is better than iron-phthalocyanines. The FePz(dtn)4 can activate and catalyze H2O2 and O2 to degrade the organic pollutants. In order to improve the lipophilic and hydrophilic capability, we succeeded in introducing propyl-bromine groups onto the periphery of tetra-(1, 4-dithiin)-porphyrazine and changing the central metal iron for manganese, copper and zinc to form four novel complexes. Furthermore, their capability for degrading the organic pollutants in heterogeneous photocatalytic system was studied and the satisfying experimental results were gained.There are four parts to be included in this paper:1. Four novel metal tetrapropyl-bromine-tetra(1,4-dithiin)-porphyrazine MPz(BrCH2CH2CH2-dtn)4 (M = Fe, Mn, Cu and Zn) have been synthesized according to the template method using 2,3-dicyano-5-propyl-bromine-1, 4-dithiin as thire precursor.2. The physical and chemical properties of the four transition metal complexes were investigated. The result indicated that the lipo-solubility was improved after introducing propyl- bromine onto the periphery of tetra-(1, 4-dithiin)-porphyrazine and their physical properties were changed.3. Based on Rhodamine B(RhB) as the model molecular of degradation, the photocatalytic property of four metal complexes were studied initially under mild conditions. The results showed that the better capacity for activation of dioxygen and peroxide hydrogen was displayed by not only the FePz(BrCH2CH2CH2-dtn)4 but also other three of complexes MPz(BrCH2CH2CH2-dtn)4 (M= Mn, Cu and Zn), all of them can degrade RhB in water under irradiation of visible light effectively. Furthermore, ZnPz(BrCH2CH2CH2-dtn)4 can degrade phenol in an aqueous solution bubbling with oxygen under visbile light irradiation at pH 12 which is very ideal.4. On the base of MPz(BrCH2CH2CH2-dtn)4, we tried to substitute the bromine of MPz(BrCH2CH2CH2-dtn)4 with imidazo.We found that the new compounds can dissolve in water.

Related Dissertations

  1. Effects of Enzymes on Metabolism of Polycyclic Aromatic Hydrocarbons in Plant,X173
  2. Theeffect of Environmental Factor on Rooting Culture of Paeonia Suffruticosa in Vitro,S685.11
  3. Synthesis and Application of New Halogen-free Flame Retardant Cotton with Expandable Anti-wrinkle Agent PNX,TQ314.248
  4. Study on Oxidation Treatment of Phenol Contaminted Soil Using Potassium Ferrate,X53
  5. Preparation of Electrode by Electrodeposition and Study on Performance of Degradation Phenol Wastewater,X703
  6. Research on Isolation and Polyphasic Taxonomy of a Phenol Tolerant Novel Species-Comamonas Zonglianii BF-3~T,X172
  7. Heavy metal ions and inorganic anions chemical probe design and Recognition Mechanism,O621.3
  8. Effects of Phenol on Digestive Function of Moina Macrocopa,X174
  9. Preparation of Phenol Molecularly Imprinted Polymers on the Surface of Silica and Its Application in DGT Technique,O621.2
  10. Studies on High Performance Water-based Acrylate Damping Coating,TQ633
  11. Synthesis, Characterization of Co3O4 /Al2O3 Nanomaterials and Catalytic Degradation on Rhodamine B,TB383.1
  12. Study on Preparation and Property of V2O5 /TiO2 Composite Film Via Microarc Oxidation,TB43
  13. Phenol , aniline micelles on the adsorption process of flocculation,X703
  14. BiVO 4 / bentonite Photocatalyst and Its Dyeing Wastewater Treatment,X791
  15. Ti-based lead dioxide electrode doped tin Preparation and Catalytic Activity,X703
  16. SnO 2 Particle Preparation and catalytic properties of the electrode,X703
  17. Typical odor substances in raw water Photocatalytic Degradation,O643.32
  18. Bi En Bahe Ecological Ethics,B82-058
  19. The Comparative Study of Two Deproteinized Methods on Xenogeneic Bone Graft Substitute Material,R687.3
  20. Photocatalytic Degradation of Malachite Green and p-Nitroaniline Using H3PW12O40/TiO2 as Composite Photocatalyst,X703
  21. Study on Pretreat of Coking Wastewater by Spony Iron,X703

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