Water purification morphology

The inorganic materials involve the silica, montmorillonite, allapulgite, FCjO, ZnCl, CuCl, etc. The as-prepared composites can absorb versatile organic and inorganic pollutants from aqueous solutions. Different silica crystalline forms were utilized to fabricate various PANI/silica composites for water purification. PANI were coated on silica gel to modify its surface morphology and to improve its adsorption capacity for phenol [35] and acid green 25 [36] adsorption from aqueous solutions. 

Sol-gel method (Zhang, 2002), replica process (Imai, 1999), and template approach (Kobayashi, 2000) have been reported as the procedures for the preparation of Ti02 nanotubes, and hollow tubes in the diameter of over 100 nm have been prepared. In practice, these materials have not been successfully commercialized as photocatalyst probably due to difficulties of its durability, costs, etc, however morphological approach may be effective in future application to air and water purification in light of its large surface area and unique structure like zeolite. 

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