Industrial Technology Research Institute

Hsiu-Fen Lin

Shih-Chieh Liao

Song-Wein Hong

Jin-Ming Chen

The invention discloses nano/micron binary structured powders for superhydrophobic, self-cleaning applications. The powders are featured by micron-scale diameter and nano-scale surface roughness. In one embodiment, the average diameter is about 1-25 &#x3bc;m, and the average roughness Ris about 3-100 nm. The nano/micron binary structured powders may be made of silica, metal oxide, or combinations thereof.

Superhydrophobic and self-cleaning powders having micron-scale diameter and nano-scale surface roughness and fabrication method thereof

A powdered photocatalyst and manufacturing method thereof are disclosed. The manufacturing method of the photocatalytic nanopowders is achieved by the non-transferred DC plasma apparatus in an atmosphere of nitrogen at around 1 atm. The nitrogen-containing gas is used as the plasma-forming gas. After the generation of the nitrogen-plasma in the non-transferred DC plasma apparatus, a plurality of solid Zn precursors are introduced to the nitrogen-plasma for vaporization and oxidization. The solid Zn precursors are vaporized and oxidized through homogeneous nucleation and are rapidly cooled down by a large amount of cooling gas (i.e. mixture of nitrogen and oxygen). After the cooling process, the tetrapod-shaped and nitrogen-doped photocatalytic ZnO nanopowders having wurtzite structure are formed.

Nanostructured zinc oxide photocatalyst for visible light and manufacturing method of the same

A method for manufacturing powders of oxides in a nanometer level through a direct current plasma thermal reaction is disclosed. The energy required is provided by the plasma that is generated in the non-transferred DC plasma apparatus. Once the solid precursors are introduced into the plasma, the solid precursors are vaporized and oxidized in the plasma reaction region of the non-transferred DC plasma apparatus continuously. Then, the oxide powders in a nanometer scale can form homogeneously and continuously. By controlling the nozzle size, the speed of the plasma can be adjusted and the coarsening and agglomeration of the nanopowders can be effectively prevented. Finally, oxide nanopowders of high-purity and high-dispersity are obtained by cooling down the plasma gas containing the vaporized and oxidized precursor through a vortical cooling-gas.

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Taichung, Taiwan

Hsiu-Fen Lin