Flashcard library · Chemistry · PaperFren
Glycerol tunes silver nanoparticle size
Silver nitrate reduced in 10–100% glycerol with PVP at room temperature gives plasmonic Ag nanoparticles from ultra-small (~1.8 nm) up to ~160 nm.
Keep what you just learned
Save these 10 cards to your NoteFren library. Your first review starts right away, and each card links back to the study it came from.
What metal salt is the silver source?
Silver nitrate.
Source: Novel Size-Tunable and Straightforward Ultra-Small Nanoparticle Synthesis in a Varying Concentration Range of Glycerol as a Green Reducing Solvent · DOI · quote verified
What dual role does glycerol play?
Solvent and reducing medium at variable concentration.
Source: Novel Size-Tunable and Straightforward Ultra-Small Nanoparticle Synthesis in a Varying Concentration Range of Glycerol as a Green Reducing Solvent · DOI · quote verified
Why is PVP added?
As a stabilizing/capping agent and size controller.
Source: Novel Size-Tunable and Straightforward Ultra-Small Nanoparticle Synthesis in a Varying Concentration Range of Glycerol as a Green Reducing Solvent · DOI · quote verified
At what temperature does the reduction run?
Room temperature (20–25 °C).
Source: Novel Size-Tunable and Straightforward Ultra-Small Nanoparticle Synthesis in a Varying Concentration Range of Glycerol as a Green Reducing Solvent · DOI · quote verified
What color change signals Ag NP formation?
The mixture turns light yellow.
Source: Novel Size-Tunable and Straightforward Ultra-Small Nanoparticle Synthesis in a Varying Concentration Range of Glycerol as a Green Reducing Solvent · DOI · quote verified
Where is the Ag surface plasmon band?
Between 410 and 450 nm.
Source: Novel Size-Tunable and Straightforward Ultra-Small Nanoparticle Synthesis in a Varying Concentration Range of Glycerol as a Green Reducing Solvent · DOI · quote verified
When do ultra-small (<10 nm) NPs form?
In a single step up to about 60% glycerol.
Source: Novel Size-Tunable and Straightforward Ultra-Small Nanoparticle Synthesis in a Varying Concentration Range of Glycerol as a Green Reducing Solvent · DOI · quote verified
What sizes appear at the glycerol extremes?
As small as 1.8 nm and as large as 159 nm.
Source: Novel Size-Tunable and Straightforward Ultra-Small Nanoparticle Synthesis in a Varying Concentration Range of Glycerol as a Green Reducing Solvent · DOI · quote verified
What happens above ~80–100% glycerol?
Hydrodynamic size rises from 10 nm up to 160 nm.
Source: Novel Size-Tunable and Straightforward Ultra-Small Nanoparticle Synthesis in a Varying Concentration Range of Glycerol as a Green Reducing Solvent · DOI · quote verified
How was TEM size averaged?
About 50 particles per ImageJ analysis.
Source: Novel Size-Tunable and Straightforward Ultra-Small Nanoparticle Synthesis in a Varying Concentration Range of Glycerol as a Green Reducing Solvent · DOI · quote verified