High thermal stable hollow mesoporous nanotubes, preparation and application for the same

A method for manufacturing a hierarchical structured nanotube, comprising the steps of:

• (A) providing a polymeric template wherein the polymeric template includes a plurality of organic polymeric nanowires;
• (B) forming an inorganic layer over a surface of the plurality of organic polymeric nanowires of the polymeric template;
• and
• (C) thermal heating the surface to form the polymeric template having the inorganic layer so as to permit a portion of atoms of the organic polymeric nanowire to migrate into the inorganic layer.

A reaction unit apparatus, comprising:

• a reaction chamber, wherein the reaction chamber has at least one hierarchical structured nanotube;
• at least one inlet connecting with the reaction chamber;
• and
• at least one outlet connecting with the reaction chamber;
• wherein, a fluid enters into the reaction unit apparatus through the inlet, engages in a reaction with at least one hierarchical structured nanotube, and discharges through the outlet;
• the hierarchical structured nanotube comprises a plurality of interconnecting nanotubes for constituting a 5 three-dimensional multi-dendrite morphology, wherein the cross-sectional diameter of each of said nanotube is from about 1 nm-5 μm;
• said nanotube is made by a material selected from the group consisting of metal oxide, semiconductor material, metal, ceramic, and any combinations thereof;
• and
• said nanotube is doped with at least one element selected from the group consisting of oxygen, sulfur, carbon, nitrogen, silicon, selenium, phosphorous, fluorine, chlorine, and any combination thereof.