HOLLANDITE COMPOUND/TITANIA FIBER HYBRID PHOTOCATALYST, METHOD FOR MANUFACTURING THE SAME AND MODULE FOR CLEANING GAS PHASE ENVIRONMENT WHICH USES THE PHOTOCATALYST

PROBLEM TO BE SOLVED: To provide a high-efficiency self-supporting photocatalyst which is suitable as a photocatalyst to efficiently decompose environmental pollutants in order to develop a photocatalyst module for a practical energy-minimum type environmental cleaning system and which is prepared by producing a hybrid hollandite compound on the surface of a fibrous photocatalyst essentially comprising titania. SOLUTION: The hollandite compound/titania fiber hybrid photocatalyst is manufactured in the processes of producing a precursor sol of the hollandite compound, applying the hollandite compound precursor sol on a fibrous photocatalyst essentially comprising titania, gelling the hollandite compound precursor sol on the fiber surfaces and sintering. The module is manufactured by packing a space with the obtained photocatalyst in a low density.