TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Method: The method (M1) further involves selecting the organic solvent such that polymer is soluble in organic solvent; and forming metal oxide phase. The method (M2) further involves increasing temperature of water-free solution to dehydration temperature of organic solvent, where the dehydration temperature is 100-200 degrees C; forming porous crystalline titanium oxide having anatase, rutile and/or brookite; forming anatase phase, mixture of anatase and rutile, or rutile by increasing ratio of TiCl4/TIPT; and increasing surface area of porous crystalline titanium oxide by increasing ratio of block copolymer to titanium from titanium precursor compound, where the surface area is 250-350 m2/g for porous crystalline titanium oxide. Preferred Components: The metal oxide phase comprises titanium oxide, aluminum oxide, zirconium oxide, zinc oxide, tin oxide, germanium oxide, cerium oxide, manganese dioxide, copper oxide and/or ruthenium oxide. The metal precursor compounds comprise TiCl4, TiOSO4, tetraisopropyl titanate (TIPT), titanium diisopropoxide bis(acetylacetonate), aluminium chloride (AlCl3), aluminum alkoxide, aluminum formate, zirconium n-butoxide and/or zirconium acetylacetonate. The porous crystalline metal oxide has BET surface area of 200-650 m2/g and average pore size of 1-10 nm.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The organic solvent is ethanol, isopropanol, butanol, glycol, glycerol, benzene, dimethylformamide and/or tetrahydrofuran.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The hydrophilic portion of polymer comprises polymer segment having ether, acrylic acid, acrylamide, maleic anhydride and/or amine group. The rigid non-hydrophilic portion of polymer comprises polyamide, polyacetylene, polythiophene, polyphenylene, polyfluorene, polyetherketone, polyethersulfone, polyimide, polyimidazo and/or pyrrolone. The polymer comprises block copolymer. The block copolymer comprises poly-(ether block amide), poly-(ether block imide) and/or poly(ether block aramide). The block copolymer is poly-(ether block amide) having general formula of (A-B')n.A=rigid hydrophobic polyamide;B'=soft hydrophilic polyether;n=10-200. EXAMPLE - No suitable example is given.