Platinum Nanoparticles
Platinum Nanoparticles - Related Videos
12:08
Catalytic Reactions at Amine-Stabilized and Ligand-Free Platinum Nanoparticles Supported on Titania During Hydrogenation of Alkenes and Aldehydes
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Cited by 4 •
2022
This protocol shows a convenient method for comparing the catalytic properties of supported platinum catalysts, synthesized by deposition of nanosized colloids or by impregnation. The hydrogenation of cyclohexene serves as a model reaction to determine the catalytic activity of the catalysts.
09:23
Harmonic Nanoparticles for Regenerative Research
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Cited by 1 •
2014
Protocol details are provided for in vitro labeling human embryonic stem cells with second harmonic generating nanoparticles. Methodologies for hESC investigation by multi-photon microscopy and their differentiation into cardiac clusters are also presented.
07:20
Amide Coupling Reaction for the Synthesis of Bispyridine-based Ligands and Their Complexation to Platinum as Dinuclear Anticancer Agents
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Cited by 1 •
2014
This protocol describes the use of amide coupling reactions of isonicotinic acid and diaminoalkanes to form bridging ligands suitable for use in the synthesis of multinuclear platinum complexes, which combine aspects of the anticancer drugs BBR3464 and picoplatin.
09:43
Preparation of Silica Nanoparticles Through Microwave-assisted Acid-catalysis
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Cited by 11 •
2013
Silica nanoparticles were prepared using acid-catalysis of a siloxane precursor and microwave-assisted synthetic techniques resulting in the controlled growth of nanomaterials ranging from 30-250 nm in diameter. The growth dynamics can be controlled by varying the initial silicic acid concentration, time of the reaction, and temperature of reaction.
13:39
Optical Trapping of Nanoparticles
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Cited by 7 •
2013
The following setup approach details low power optical trapping of dielectric nanoparticles using a double-nanohole in metal film.
FAQs
Particle size changes catalytic behavior by altering the proportion of platinum atoms exposed at the surface. Smaller particles generally provide a higher surface-area-to-volume ratio, creating more accessible sites for reactant adsorption, bond breaking, electron transfer, and redox chemistry. Consequently, controlling size helps chemists connect nanoscale structure with reaction performance and design materials with more effective catalytic surfaces.
Shape, surface ligands, and oxidation state modify which platinum atoms and chemical environments are available to interact with reactants. Ligands can stabilize the particles while also influencing surface accessibility, whereas oxidation state affects the particles’ chemical reactivity. Considering these variables together allows chemists to tune catalytic behavior rather than treating all platinum nanoparticles as chemically identical.
A high surface-area-to-volume ratio exposes a larger fraction of platinum atoms to the surrounding chemical environment. These surface atoms can adsorb reactants and facilitate bond breaking, electron transfer, and redox reactions. The resulting increase in accessible reactive sites is central to understanding why nanoscale platinum supports catalytic processes and why particle dimensions are important experimental variables.
Chemists synthesize these particles either as colloidal suspensions or in association with supporting materials, then stabilize them so their nanoscale form remains usable. The overview identifies stabilization as an important part of handling the material, because particle size and surface characteristics govern reactivity. Preparation therefore includes both creating the particles and maintaining the structure needed for chemical applications.
Their applications include catalysis, fuel-cell electrode reactions, chemical sensing, and environmental remediation. Catalytic uses exploit surface-mediated reactions, while fuel-cell electrodes rely on platinum-associated reaction chemistry. In sensing and remediation, the particles provide chemically active surfaces that can interact with target substances. These uses illustrate how one material platform supports several areas of practical chemistry.
Research on these particles helps establish relationships between nanoscale structure and chemical reactivity. By examining size, shape, surface ligands, and oxidation state alongside reaction behavior, chemists can evaluate how structural variables affect performance. This knowledge supports the development of chemical technologies that aim for improved efficiency, selectivity, and durability in catalytic and related applications.