| 摘要 |
An air cleaner using corrugated cardboard, charcoal or activated charcoal in which an optical catalyst is coated is provided to purify air, to enhance purification function by using natural materials such as the charcoal or the activated charcoal and to supplement a purification ability of the charcoal or the activated charcoal by coating the optical catalyst. A corrugated cardboard(1) is coated by an optical catalyst and has a hole. A container of the corrugated cardboard(1-1) is formed by is piling up the corrugated cardboard. Air is nature-friendlily purified by putting charcoal or the activated charcoal granule in which the optical catalyst is coated into the container of the corrugated cardboard.
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