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771937

Sigma-Aldrich

Platinum

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

Synonym(s):

Platinum black, Platinum element

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About This Item

Empirical Formula (Hill Notation):
Pt
CAS Number:
7440-06-4
Molecular Weight:
195.08
EC Number:
231-116-1
MDL number:
MFCD00011179
UNSPSC Code:
11101803
PubChem Substance ID:
329767526
NACRES:
NA.23

Key Documents

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Quality Level

100

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

Related Categories

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
GHS02

signalword

Danger

hcodes

H228

Hazard Classifications

Flam. Sol. 1

Storage Class

4.1B - Flammable solid hazardous materials

wgk_germany

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
MKCN7702
MKCH5633
MKBT8405V
MKBP9751V

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Fabrication of platinum nanoparticle counter electrode for highly efficient dye-sensitized solar cells by controlled thermal reduction time
Hoa, N. T. Q., Dao, V. D., & Choi, H. S.
J. Mater. Sci., 49(14), 4973-4978 (2014)
Keith B Male et al.
The Analyst, 132(12), 1254-1261 (2008-03-06)
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
Electrodeposited platinum nanoparticles on the multi-walled carbon nanotubes and its electrocatalytic for nitric oxide
Zhang, L., Fang, Z., Zhao, G. C., & Wei, X. W.
International Journal of Electrochemical Science, 3(6), 746-754 (2008)
Yu;X.;Ye;S.;
Journal of Power Sources, 172(1), 145-154 (2007)
A Biologically-Inspired Electrochemical Half-Cell for Light-Driven Generation of Hydrogen
Rebecca A. Grimme and John H. Golbeck
Material Matters, 3(4) (2008)
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