JP2005270734A - 光触媒複合体およびこれを用いた有機物質変換方法 - Google Patents
光触媒複合体およびこれを用いた有機物質変換方法 Download PDFInfo
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Abstract
【解決手段】 シリカ多孔体の細孔表面に、光触媒活性をもつ光触媒物質である二酸化チタンと、有機基であるn−オクチル基とを固定する。これにより、有害物質分子が細孔表面のn−オクチル基と相互作用して選択的に吸着され、細孔内で濃縮された有害物質を、二酸化チタンが光触媒反応により分解する。したがって、微量濃度の有害物質であっても効果的に除去できる。
【選択図】 なし
Description
本実施例の光触媒複合体の製造方法を説明する。なお、本実施例の製造方法は非特許文献2に記載のTiO2を担持する多孔体の製造方法にしたがっている。
上記のように製造したTiO2−MCM−41(比較例)とC8−TiO2−MCM−41とについて、吸着特性の違いを測定した。
上記した製造方法で製造したTiO2−MCM−41(比較例)とC8−TiO2−MCM−41とについて、吸着性と光触媒活性を測定した。
次に、上記した製造方法で製造したC8−TiO2−MCM−41について、光触媒を作用させるために紫外線を照射した後も有機基が保持されるかを調べた。
Claims (10)
- 多孔体の細孔表面に、光触媒活性をもつ光触媒物質と、有機基とが固定されていることを特徴とする光触媒複合体。
- 上記多孔体がシリカ系多孔体であることを特徴とする請求項1に記載の光触媒複合体。
- 上記光触媒物質が金属酸化物であることを特徴とする請求項1または2に記載の光触媒複合体。
- 上記光触媒物質が二酸化チタンであることを特徴とする請求項1から3のいずれか1項に記載の光触媒複合体。
- 上記有機基がアルキル基であることを特徴とする請求項1から4のいずれか1項に記載の光触媒複合体。
- 上記アルキル基が炭素数が1から18の飽和アルキル基であることを特徴とする請求項5に記載の光触媒複合体。
- 上記飽和アルキル基がn−オクチル基であることを特徴とする請求項6に記載の光触媒複合体。
- 上記多孔体が、直径5000nm以下の細孔を有することを特徴とする請求項1から7のいずれか1項に記載の光触媒複合体。
- 請求項1から8のいずれか1項に記載の光触媒複合体を試料液と接触させ、当該光触媒複合体に上記光触媒物質を活性化する波長領域の光を照射することにより、当該試料液中の有機物質を反応させることを特徴とする有機物質変換方法。
- 上記有機物質が一分子中に親水基と疎水基を併せ持つ化合物であることを特徴とする請求項9に記載の有機物質変換方法。
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Cited By (22)
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JP2007106632A (ja) * | 2005-10-14 | 2007-04-26 | Kimoto & Co Ltd | 新規ヘテロポリ酸塩、それを用いた光触媒、及び光触媒機能性部材 |
WO2008032459A1 (en) * | 2006-09-13 | 2008-03-20 | Japan Science And Technology Agency | Acid catalyst having organic group bound thereto |
JP2009242170A (ja) * | 2008-03-31 | 2009-10-22 | Hiroshima Univ | 複合体およびその製造方法 |
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2004
- 2004-03-23 JP JP2004085082A patent/JP4469975B2/ja not_active Expired - Lifetime
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