PROBLEM TO BE SOLVED: To provide a photocatalytic and photosynthetic toothbrush degrading and destroying plaque bacteria.SOLUTION: The photocatalytic and photosynthetic toothbrush includes a compound catalyst semiconductor 53 responding to heat (temperature) and light. When the compound catalyst semiconductor 53 is mediated by finite temperature, normal temperature, body temperature, light or a current, conduction electrons and electron holes are excited by thermochemical reaction and photochemical reaction, and superoxides (O2-) and OH radicals (OH-) generated as a result of the oxidoreduction reaction degrade and sterilize plaque bacteria. For achieving the target, as means for constantly and concurrently exerting the thermochemical reaction and photochemical reaction, a compound catalyst semiconductor 53 is obtained by mixing two or more mutually different materials of a plurality of compound catalyst semiconductors 53 within a range from 0.0 eV to 3.8 eV, and infinitely collecting them, with a band gap becoming to zero.COPYRIGHT: (C)2014,JPO&INPIT【課題】プラーグ細菌を分解して殺菌する光触媒光合成歯ブラシを提供する。【解決手段】光触媒光合性歯ブラシは熱(温度)と光に回答する化合物触媒半導体53を具備した歯ブラシである。化合物触媒半導体53に有限温度、常温、体温光または電流が媒介されれば熱化学反応及び光化学反応で伝導電子及び正孔が励起されて酸化還元反応の結果に生成されたスーパーオキサイド(O2-)とOHラジカル(OH-)がプラーグ細菌を分解して殺菌する。以上の目標を果たすために熱化学反応、光化学反応を常時的に同時に発揮させる手段として0.0eVから3.8eVの範囲で複数個の化合物触媒半導体53のお互いに違う2種以上の材料を混合してバンドギャップ(Band gap)がゼロ(Zero)に無限取り集める化合物触媒半導体53を獲得する。【選択図】図3
