| 摘要 |
A method of quickly decomposing and removing an organic chlorine compound, which comprises coating a liquid containing an organic chlorine compound on the surface of a photocatalyst so that the liquid does not flow, said photocatalyst comprising a hollandite-type crystal phase represented by the formula: <paragraph lvl="0"><in-line-formula>AxMyN8-yO16 </in-line-formula>(wherein A is at least one element selected from the group consisting of K, Rb, Cs, Ca, Ba and Na, M is a bivalent or trivalent metal element, N is an element which forms a rutile-type oxide, such as Ti, Sn or Mn, provided that A may be a Na element, only when M is Cr, and x and y satisfy 0.7<x<=2.0 and 0.7<y<=2.0, respectively), followed by irradiation with light in air so that the organic chlorine compound undergoes quick and complete oxidative destruction.
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