Controlled synthesis of porous platinum nanostructures for catalytic applications.

Controlled synthesis of porous platinum nanostructures for catalytic applications.

Journal of nanoscience and nanotechnology (2014-04-23)

Yanqin Cao, Junwei Zhang, Yong Yang, Zhengren Huang, Nguyen Viet Long, Masayuki Nogami

ABSTRACT

Porous platinum, that has outstanding catalytic and electrical properties and superior resistant characteristics to corrosion, has been widely applied in chemical, petrochemical, pharmaceutical, electronic, and automotive industries. As the catalytic activity and selectivity depend on the size, shape and structure of nanomaterials, the strategies for controlling these factors of platinum nanomaterials to get excellent catalytic properties are discussed. Here, recent advances in the design and preparation of various porous platinum nanostructures are reviewed, including wet-chemical synthesis, electro-deposition, galvanic replacement reaction and de-alloying technology. The applications of various platinum nanostructures are also discussed, especially in fuel cells.

MATERIALS

Product Number

Brand

Product Description

298093

Sigma-Aldrich

Platinum, gauze, 100 mesh, 99.9% trace metals basis

520780

Sigma-Aldrich

Platinum black, fuel cell grade, ≥99.9% trace metals basis

520799

Sigma-Aldrich

Platinum black, low bulk density, ≥99.9% trace metals basis

444685

Sigma-Aldrich

Platinum, wire, diam. 2.0 mm, 99.9% trace metals basis

349348

Sigma-Aldrich

Platinum, foil, thickness 0.127 mm, 99.99% trace metals basis

349321

Sigma-Aldrich

Platinum, foil, thickness 0.25 mm, 99.99% trace metals basis

349402

Sigma-Aldrich

Platinum, wire, diam. 0.25 mm, 99.9% trace metals basis

205915

Sigma-Aldrich

Platinum black, black, powder, ≤20 μm, ≥99.95% trace metals basis

327484

Sigma-Aldrich

Platinum, shot, ≤3 mm, ≥99.9% trace metals basis

267244

Sigma-Aldrich

Platinum, foil, thickness 0.025 mm, 99.9% trace metals basis

349380

Sigma-Aldrich

Platinum, foil, thickness 0.1 mm, 99.9% trace metals basis

267821

Sigma-Aldrich

Platinum, wire, diam. 0.127 mm, 99.9% trace metals basis

357375

Sigma-Aldrich

Platinum, wire, diam. 0.076 mm, ≥99.99% trace metals basis

GF26290313

Platinum, tube, 50mm, outside diameter 2.0mm, inside diameter 1.6mm, wall thickness 0.2mm, as drawn, 99.95%

GF58198517

Platinum, wire reel, 0.05m, diameter 0.6mm, as drawn, 99.99+%

GF51572572

Platinum, insulated wire, 5m, conductor diameter 0.05mm, insulation thickness 0.009mm, PTFE (polytetrafluoroethylene) insulation, 99.99%

GF83172269

Platinum, foil, 0.05m coil, thickness 0.025mm, coil width .4mm, as rolled, 99.95%

GF43288487

Platinum, wire reel, 0.05m, diameter 1.0mm, annealed, may be used as one component of a thermocouple, 99.99%

GF55231118

Platinum, wire reel, 0.05m, diameter 1.0mm, as drawn, 99.99+%

GF01692952

Platinum, wire reel, 0.05m, diameter 0.25mm, as drawn, 99.998%

GF15342016

Platinum, tube, 500mm, outside diameter 1.2mm, inside diameter 1.0mm, wall thickness 0.1mm, as drawn, 99.95%

GF22018553

Platinum, tube, 50mm, outside diameter 3.0mm, inside diameter 2.8mm, wall thickness 0.1mm, as drawn, 99.95%

GF00187163

Platinum, foil, 0.1m coil, thickness 0.15mm, coil width .9mm, as rolled, 99.99%

GF55534046

Platinum, foil, 0.05m coil, thickness 0.029mm, coil width .34mm, annealed, 99.99%

GF68611237

Platinum, foil, 0.2m coil, thickness 0.029mm, coil width .34mm, annealed, 99.99%

GF15087203

Platinum, foil, 0.1m coil, thickness 0.025mm, coil width 1.6mm, as rolled, 99.95%

771937

Sigma-Aldrich

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

GF43907799

Platinum, foil, 15mm disks, thickness 0.005mm, as rolled, 99.95%

GF73706058

Platinum, foil, 10mm disks, thickness 0.0125mm, as rolled, 99.95%

GF83202083

Platinum, foil, 0.2m coil, thickness 0.045mm, coil width .75mm, as rolled, 99.95%