Provided is a manufacturing method of a porous titania powder with macropores, which can synthesize the porous titania powder via a self-assembly process using emulsion. According to an embodiment of the present invention, the manufacturing method of a porous titania powder with macropores comprises the steps of: (a) emulsifying a polar solution composed of polymeric particles, a liquid precursor, water and hydrochloric acid in a nonpolar solution to form an emulsion droplet; (b) forming a composite powder composed of titania and the polymer particles via a self-assembly process while evaporating the polar solution in the emulsion droplet by heating the emulsion droplet; and (c) sintering the composite powder composed of titania and the polymer particles to remove the polymeric particle from the composite powder and form macropores, thereby forming the porous titania powder with macropores. In the step (a), the polar solution and the nonpolar solution are injected into a storage space of a rotating cylinder system which comprises an inner cylinder and an outer cylinder and has the storage space formed between the inner cylinder and the outer cylinder. In addition, when the outer cylinder is fixed and the inner cylinder is rotated, the polar solution is emulsified in the nonpolar solution by a vortex formed in the storage space so the emulsion droplet is formed.;COPYRIGHT KIPO 2016
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