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  • Synthesis of coral-like tantalum oxide films via anodization in mixed organic-inorganic electrolytes.

Synthesis of coral-like tantalum oxide films via anodization in mixed organic-inorganic electrolytes.

PloS one (2013-06-27)
Hongbin Yu, Suiyi Zhu, Xia Yang, Xinhong Wang, Hongwei Sun, Mingxin Huo
ABSTRACT

We report a simple method to fabricate nano-porous tantalum oxide films via anodization with Ta foils as the anode at room temperature. A mixture of ethylene glycol, phosphoric acid, NH4F and H2O was used as the electrolyte where the nano-porous tantalum oxide could be synthesized by anodizing a tantalum foil for 1 h at 20 V in a two-electrode configuration. The as-prepared porous film exhibited a continuous, uniform and coral-like morphology. The diameters of pores ranged from 30 nm to 50 nm. The pores interlaced each other and the depth was about 150 nm. After calcination, the as-synthesized amorphous tantalum oxide could be crystallized to the orthorhombic crystal system. As observed in photocatalytic experiments, the coral-like tantalum oxide exhibited a higher photocatalytic activity for the degradation of phenol than that with a compact surface morphology, and the elimination rate of phenol increased by 66.7%.

MATERIALS
Product Number
Brand
Product Description

Tantalum, foil, 50x50mm, thickness 0.75mm, annealed, 99.9%
Tantalum, foil, 0.5m coil, thickness 0.009mm, 99.9%
Tantalum, foil, 100x100mm, thickness 0.25mm, annealed, 99.99%
Tantalum, foil, 0.5m coil, thickness 0.04mm, coil width .65mm, as rolled, 99.9%
Tantalum, foil, 0.2m coil, thickness 0.0075mm, 99.9%
Tantalum, foil, 50x50mm, thickness 0.125mm, annealed, 99.9%
Tantalum, foil, 10mm disks, thickness 0.015mm, 99.9%
Tantalum, foil, light tested, 50x50mm, thickness 0.01mm, 99.9%
Tantalum, foil, 25mm disks, thickness 0.0125mm, 99.9%
Tantalum, foil, light tested, 100x100mm, thickness 0.034mm, as rolled, 99.9%
Tantalum, foil, 15mm disks, thickness 0.25mm, annealed, 99.99%
Tantalum, foil, light tested, 100x100mm, thickness 0.03mm, as rolled, 99.9%
Tantalum, foil, light tested, 25x25mm, thickness 0.003mm, 99.9%
Tantalum, foil, light tested, 150x150mm, thickness 0.034mm, as rolled, 99.9%
Tantalum, foil, light tested, 25x25mm, thickness 0.01mm, 99.9%
Tantalum, foil, light tested, 25x25mm, thickness 0.02mm, 99.9%
Tantalum, foil, light tested, 100x100mm, thickness 0.02mm, 99.9%
Tantalum, foil, light tested, 25x25mm, thickness 0.015mm, 99.9%
Tantalum, foil, light tested, 100x100mm, thickness 0.025mm, as rolled, 99.9%
Tantalum, foil, light tested, 150x150mm, thickness 0.075mm, annealed, 99.9%
Tantalum, foil, not light tested, 25x25mm, thickness 0.0005mm, 99.9%
Tantalum, foil, not light tested, 25x25mm, thickness 0.001mm, 99.9%
Tantalum, foil, not light tested, 50x50mm, thickness 0.0015mm, 99.9%
Tantalum, foil, not light tested, 100x100mm, thickness 0.01mm, 99.9%
Tantalum, foil, not light tested, 25x25mm, thickness 0.0015mm, 99.9%
Tantalum, foil, not light tested, 25x25mm, thickness 0.01mm, 99.9%
Tantalum, foil, not light tested, 100x100mm, thickness 0.003mm, 99.9%
Tantalum, foil, light tested, 100x100mm, thickness 0.015mm, 99.9%
Tantalum, foil, light tested, 150x300mm, thickness 0.075mm, annealed, 99.9%
Tantalum, foil, not light tested, 25x25mm, thickness 0.003mm, 99.9%