Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 10 of 10 for “"Galvanic Replacement"”.
-
Synthesis of Complex Plasmonic Nanostructures for Applications in Surface-Enhanced Raman Spectroscopy and Biomedicine
… control. The second part of this work discusses galvanic replacement reactions, which can be used to create a variety of hollow, porous nanostructures whose LSPR can be tuned into the near infrared region, a spectral range particularly interesting for biomedical applications due to reduced light …
-
Design and Synthesis of Nanomaterials for Surface-Enhanced Raman Scattering, Fuel Cell Technology, and Photonics
… I performed a systematic investigation on the galvanic replacement reaction between PtCl62- and Pd nanocrystals with well-defined shapes including octahedra, nanocubes, and nanorods. The resultant hollow Pd-Pt bimetallic nanostructures were employed as electrocatalysts for the oxygen reduction …
-
Shape-Selective Growth of Bimetallic Nanostructures
… In this regard, we firstly tailored the galvanic replacement reaction (GRR) for the synthesis of Pt/Ag bimetallic hollow nanostructures with controlled number of voids, such as hollow boxes, dimers, multimers, and popcorns. GRR was also employed with seed-mediated growth method to …
-
Preparation and characterization of bimetallic core-shell nanoparticles
… The second technique studied was the use of galvanic replacement technique for producing bimetallic core-shell nanoparticles, which provides a novel and rapid technique for coating gold nanoparticle seeds with platinum. The Au(core)-Pd(shell) bimetallic nanoparticle system stabilised with …
-
Engineering the Optical Properties of Gold Nanostructures for Biomedical Applications
… with hollow interiors and porous walls using the galvanic replacement reaction between Ag nanocubes and AuCl<sub>4</sub>-. I have engineered these Au nanocages to have localized surface plasmon resonance: LSPR) peaks in the near-infrared region with strong absorption. These optical properties …
-
The ultra-selective hydrogenation of Furfural on PtCu supported bimetallic nanoparticles and on Pt(111) under ultra-high vacuum
… Single Atom Alloys (SAA), formed via the galvanic replacement of dispersed host Cu nanoparticles by Pt was investigated. Pt:Cu nanoparticles with atomic ratios ranging from 1:20 to 0.5:250 were synthesized and tested. After overcoming a brief induction period due to the reduction of …
-
Morphology Controlled Synthesis of Copper Based Multimetallic Nanostructures and Their Electrocatalytic Properties for Methanol Oxidation Reaction
… developed through the in situ separation of the galvanic replacement reaction and the co-reduction mechanisms, during the alloying process with Cu nanowires. Ru was incorporated into the multimetallic nanotubes forming Cu-Pt-Ru smooth and rough surface structure. The influence of nanotube surface …
-
Shape-Engineering Substrate-Based Plasmonic Nanomaterials
… will highlight synthetic routes utilizing galvanic replacement reactions, where the prepositioned templates are chemically transformed into hollow nanoshells. Detailed studies are provided highlighting discoveries related to (i) hollowing, (ii) defect transfer, (iii) strain induction, (iv) …
-
Spectroelectrochemical, Separation and Surface Functionalisation Studies of Plasmonic Nanoparticles
… based on a Mg core was approached by galvanic replacement, where more the noble metal ions of Au, Pd and Pt are reduced on the surface of Mg. Optical and spectroscopic approaches were used to establish the reaction kinetics on the single particle level, revealing rapid reaction …
-
Development of novel metal nanoparticle based methods for detection of bacteria using surface-enhanced Raman spectroscopy
… underlying silver substrate. Both sputtering and Galvanic replacement was attempted but neither gave the hoped-for increase. The second approach was to prepare different Ag nanoparticles whose performance has been claimed to be superior to those used in the original studies. For this approach, Ag …