TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The hydrophilic modified surface is formed by surface modifying using plasma. The carbon nanostructure-metal composite is a bonded material or mixture of the carbon nanostructure and a metal or metal oxide. The pore size of the porous films of the carbon nanostructure-metal composite is controlled by the diameter size of the carbon nanostructure, where the pore size of the porous films of the carbon nanostructure-metal composite is 0.1-500 nm. The carbon nanostructure is a single wall carbon nanotube, double wall carbon nanotube, multi wall carbon nanotube, carbon nanohorn and/or carbon nanofiber. The metal or the metal oxide includes at least one of magnesium, aluminum, potassium, calcium, scandium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, gallium, rubidium, strontium, yttrium, zirconium, molybdenum, ruthenium, rhodium, palladium, silver, cadmium, indium, tin, cesium, barium, lanthanum, cerium, neodymium, samarium, europium, gadolinium, terbium, hafnium, iridium, platinum, thallium, lead or bismuth. In step (a): the metal is silver having a size of 1-500 nm, which is included at 5-90 wt.% for the whole carbon nanostructure-metal composite; and the solvent includes surfactant (100-300 parts by weight for every 100 parts by weight of the carbon nanostructure-metal composite), where the surfactant is non-ionic surfactant, cationic surfactant and/or anionic surfactant. Preferred Method: The surface modifying is performed by a plasma treatment, where the plasma treatment: uses inert gas as discharge gas and is performed by an atmospheric pressure treatment method; or uses plasma including radio frequency plasma, corona discharge plasma, high frequency plasma, dielectric barrier discharge plasma, alternating current glow discharge plasma, direct current discharge plasma, intermediate frequency plasma or arc plasma, and is performed at normal temperature. In step (a), the carbon nanostructure-metal composite is manufactured by: mixing the carbon nanostructure dispersion dispersed in the reductive solvent with the metal precursor and heat-treated it; or mixing a stabilizer with the dispersion of the carbon nanostructure dispersion dispersed in the reductive solvent, mixing the metal precursor, and heat-treating it, where the heat treating is performed at 100-700 degrees C, and the coating is performed by filtering the carbon nanostructure metal composite in the membrane support and compressing the carbon nanostructure-metal composite remaining in the membrane support.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The reductive solvent includes polyhydric alcohol and/or glycol ethers.The polyhydric alcohol includes glycols, glycerin, threitol, arabitol, glucose, mannitol, galactitol or sorbitol of formula (H-(OR1)n-OH) (I). The glycol ethers are compounds of formula (R4-(OR2)m-OR3) (II).R1, R2 = 2-10C alkylene;R3 = H, allyl, 1-10C alkyl, 5-20C aryl or 6-30C aralkyl;R4 = allyl, 1-10C alkyl, 5-10C aryl, 6-30C aralkyl or 2-10 alkyl carbonyl, (where alkyl of alkyl carbonyl optionally include double bond in a carbon chain); andn, m = 1-100. EXAMPLE - Carbon nanotube-silver composite (0.45 g) was added to ultra-pure water (100 ml). Then sodium dodecyl sulfate (anionic surfactant) (0.45 g) was added to the resultant mixture and subjected to the ultrasonic dispersion for 60 minutes. Carbon nanotube-silver composite dispersion (250 ml) was introduced into the cartridge mounted with a ceramic porous filter and was repeatedly coated on the surface of the ceramic porous filter by using a water pump for four times. After the coating was completed, ethanol (250 ml) was injected into the cartridge and the washing was performed for four times. The washed composite porous filter was subjected to heat treatment at 150-180 degrees C for 1-24 hours to fuse the silver of the carbon nanotube-silver composite to the filter. Then plasma treatment was performed to modify the surface of the membrane fused with the carbon nanotube-silver composite by hanging the filter fused with the carbon nanotube-silver composite from the sample holder, and rotated at a speed of 0.5 cm/second. Argon was used as the discharge gas for generating plasma, and the flow rate of argon was maintained at 5 l/minute. The plasma treatment frequency was performed for 5 periods at normal pressure and normal temperature by fixing the plasma power to a radio frequency power of 100W, with a total plasma treatment time of 10 minutes by 2 minutes per/period, thus to obtain the porous films comprising the carbon nanotube-silver composite.