Türkevich synthesis of spherical gold nanoparticles in solution

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Table of contents

General introduction
Chapter I: State of the art
I- Metal nanoparticles in history and nowadays
II- Synthesis of metal nanoparticles
II-1- Physical methods for synthesis of metal nanoparticles
II-1-1- Magnetron sputtering
II-1-2- Laser vaporization or ablation
II-2- Chemical methods for synthesis of metal nanoparticles
II-2-1- Türkevich synthesis of gold nanoparticles
II-2-2- Deposition-Precipitation Method
II-3- Synthesis of metal nanoparticles by radiolysis
III- Properties of metal nanoparticles and applications
III-1- Catalytic properties
III-2- Optical properties
III-3- Biological applications
IV- Catalysis assisted by plasmon of metal nanoparticles
IV-1- Plasmon assisted catalysis with non-supported metal nanoparticles:
IV-2- Plasmon assisted catalysis via supported metal nanoparticles
IV-3- Plasmonic NPs supported on photocatalytic substrates
V- Conclusion
Chapter II: Experimental setups, materials and methods
I- Synthesis of metal nanoparticles and nanostructures
I-1- Türkevich synthesis of spherical gold nanoparticles in solution
I-2- Synthesis of Palladium Nanoflowers
II- Characterization techniques of the metal nanostructures
II-1- UV–Visible absorption spectroscopy
II-2- Transmission Electron Microscopy (TEM)
II-3- X-Ray Photoelectron Spectroscopy (XPS)
III- Analytical methods
III-1- Electrospray Ionization Mass Spectrometry
III-2- Gas Chromatography coupled with Mass Spectroscopy
III-3- Surface Raman Enhanced Spectroscopy (SERS)
IV- Irradiation setups
IV-1- Xenon Lamp equipped with a longpass filter
IV-2- Homemade LED-based cylindrical photochemical reactor
IV-3- Continuous green laser excitation
V- Chemicals
Chapter III: Degradation of para-nitrothiophenol by plasmon exciation of gold nanoparticles
I- Introduction
II- Sample preparations and irradiation
III- Degradation of pNTP followed by UV-visible spectroscopy
IV- Characterizations of the formed products
IV-1- Analysis of the supernatant
IV-1-1- ESI-MS spectra of known compounds
IV-1-1- ESI-MS spectra of the irradiated solutions
IV-2- SERS analysis of the AuNPs surface
V- Discussion
VI- Conclusion
Chapter IV: Hexacyanoferrate (III) reduction by electron transfer induced by plasmonic catalysis on gold nanoparticles
I- Introduction
II- Experimental details
III- Reduction of hexacyanoferrate in the presence of sodium thiosulfate
III-1- Irradiation using LEDs at 520 nm
III-2- Irradiation using a Xe lamp equipped with a 450 nm optical cutoff filter
IV- Reduction of hexacyanoferrate in the absence of sodium thiosulfate
IV-1- Irradiation using LEDs at λ = 520 nm
IV-2- Irradiation using a Xe lamp equipped with a 450 nm optical cutoff filter
IV-3- Effect of stabilizing agent of the Au-NPs
V- Discussion
VI- Conclusions
Chapter V: Plasmonic catalysis for Suzuki-Miyaura cross-coupling reaction using Palladium nanoflowers
I- Introduction
II- Pd nanoflowers as catalysts
III- Catalytic study of the Suzuki-Miyaura cross coupling reactions
III-1- Experimental details
III-2- Reaction between iodobenzene and phenylboric acid
III-3- Reactions between other haloarenes and phenylboric acid
III-4- Proposed mechanism
IV- Pd nanoflowers after catalysis
V- Conclusion
Conclusion and perspectives
Annex: Gas phase oxidation of CO to CO2 assisted by plasmon of gold nanoparticles
I- Synthesis of gold nanoparticles on support
I-1- Deposition-Precipitation (DP) with urea
I-2- Synthesis after impregnation of gold ions on silica (SiO2) substrate
II- Oxidation of CO
II-1- Reactor
II-2- Results
II-3- Perspectives
Résumé de thèse
Summary of thesis