Spectroscopy of Palladium Nanoparticle Synthesis: Tailoring Nanoparticle Growth Parameters for Hydrogen Storage

Palladium nanoparticle-based surface acoustic wave hydrogen sensor.

Palladium (Pd) nanoparticles (5-20 nm) are used as the sensing layer on surface acoustic wave (SAW) devices for detecting H2. The interaction with hydrogen modifies the conductivity of the Pd nanoparticle film, producing measurable changes in acoustic wave propagation, which allows for the detection of this explosive gas. The nanoparticle-based SAW sensor responds rapidly and reversibly at room...

Miniemulsions for Nanoparticle Synthesis

© Springer-Verlag Berlin Heidelberg 2003 Miniemulsions are specially formulated heterophase systems consisting of stable nanodroplets in a continuous phase. The narrowly size distributed nanodroplets of 50 to 500 nm can be prepared by shearing a system containing oil, water, a surfactant, and an osmotic pressure agent which is insoluble in the continuous phase. Since each of the nanodroplets ca...

Size tailoring of aqueous germanium nanoparticle dispersions.

We demonstrate a practical route to synthesize Ge nanoparticles (NPs) in multi-gram quantities via the laser pyrolysis of GeH4 gas. The size of the as-produced Ge NPs can be precisely controlled in the range of 19.0 to 65.9 nm via a subsequent etching procedure using a dilute H2O2 solution. Stable water dispersions of Ge NPs yield particles with a Ge/GeO2 core-shell structure, however, the oxid...

Hydrothermal synthesis nanoparticle bysupercritical fluid

Supercritical fluid (SCF) technology has become an important tool of materials processing in the lasttwo decades. Supercritical CO2 and H2O are extensively being used in the preparation of a great variety ofnanomaterials. The greatest requirement in the application of nanomaterials is its size and morphology control, which determine the application potential of the nanoparticles, as...

Nanoparticle Synthesis For Magnetic Hyperthermia