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771937

Sigma-Aldrich

Platinum

nanopowder, 200 nm particle size (SEM), 99.9% (metals basis)

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Synonym(s):
Platinum black, Platinum element
Empirical Formula (Hill Notation):
Pt
CAS Number:
Molecular Weight:
195.08
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

Quality Level

assay

99.9% (metals basis)

form

nanopowder

reaction suitability

reagent type: catalyst
core: platinum

resistivity

10.6 μΩ-cm, 20°C

particle size

200 nm (SEM)

bp

3827 °C (lit.)

mp

1772 °C (lit.)

density

21.45 g/cm3 (lit.)

SMILES string

[Pt]

InChI

1S/Pt

InChI key

BASFCYQUMIYNBI-UHFFFAOYSA-N

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Platinum nanopowder, 200 nm particle size (SEM), 99.9% (metals basis)

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Platinum

form

nanopowder

form

foil

form

foil

form

foil

mp

1772 °C (lit.)

mp

1772 °C (lit.)

mp

1772 °C (lit.)

mp

1772 °C (lit.)

density

21.45 g/cm3 (lit.)

density

21.45 g/cm3 (lit.)

density

21.45 g/cm3 (lit.)

density

21.45 g/cm3 (lit.)

bp

3827 °C (lit.)

bp

3827 °C (lit.)

bp

3827 °C (lit.)

bp

3827 °C (lit.)

resistivity

10.6 μΩ-cm, 20°C

resistivity

10.6 μΩ-cm, 20°C

resistivity

10.6 μΩ-cm, 20°C

resistivity

10.6 μΩ-cm, 20°C

General description

Platinum nanopowder has a high catalytic activity and is used widely in catalysis, batteries, fuel cells, capacitors and sensors. They are used in the synthesis of counter electrode in dyes sensitized solar cells. Since it is difficult to directly use platinum nanoparticle as the electrode, they are usually surface supported on graphene or multi-walled carbon nanotubes.

Application

Nanoscale platinum powders possess improved reaction rates compared to bulk powders owing to their high surface area. Platinum nanopowders have found use in applications including in fuel cells and oxidation catalysts.

Features and Benefits

High catalytic functionality, high conductivity and chemical stability in an acid-base environment.

pictograms

Flame

signalword

Danger

hcodes

Hazard Classifications

Flam. Sol. 1

Storage Class

4.1B - Flammable solid hazardous materials

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


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Graphene nanosheet (GNS) gives rise to an extraordinary modification to the properties of Pt cluster electrocatalysts supported on it. The Pt/GNS electrocatalyst revealed an unusually high activity for methanol oxidation reaction compared to Pt/carbon black catalyst. The Pt/GNS electrocatalyst also
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Platinum nanoparticles were electrodeposited by a multi-potential step technique onto a multi-walled carbon nanotube (MWCNT) film pre-casted on a glassy carbon (GC) or boron-doped diamond (BDD) electrode. The MWCNT network consisted of Pt nanoparticles with an average diameter of 120

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