EFFICIENT PHOTOCATALYSIS OF THE IRREVERSIBLE ONE-ELECTRON AND 2-ELECTRON REDUCTION OF HALOTHANE ON PLATINIZED COLLOIDAL TITANIUM-DIOXIDE IN AQUEOUS SUSPENSION
EFFICIENT PHOTOCATALYSIS OF THE IRREVERSIBLE ONE-ELECTRON AND 2-ELECTRON REDUCTION OF HALOTHANE ON PLATINIZED COLLOIDAL TITANIUM-DIOXIDE IN AQUEOUS SUSPENSION
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DOI：
10.1021/j100298a014
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发表时间：
1987-07-02
影响因子：
--
通讯作者：
CHAPMAN, R
中科院分区：
文献类型：
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作者：
BAHNEMANN, DW;MONIG, J;CHAPMAN, R
引言分散在溶液中的小半导体颗粒的光电化学，在过去的15年中一直是一个非常活跃的研究领域。研究最彻底的材料包括过渡金属的氧化物1-9和硫化物2c，f，3c'd '10 - 12。其中，TiO 2由于其显著的抗光腐蚀稳定性而受到特别关注。1-5· 9此外，Ti 〇 2的透明胶体悬浮液可以容易地分散并提供若干优点：（i）高比表面积导致增强的催化活性。（ii）通过吸收具有hvex> Eg（Eg= 3.2eV =带隙能量）的光子而产生的导带电子（eCB+）和价带空穴（hVB+）都可以用于化学氧化还原过程。GSF，Instituí für Tieflagerung，D3300布伦瑞克，西德国。
Introduction The photoelectrochemistry of small semiconductor particles, which are dispersed in solution, has been an area of very active research in the past 15 years. 1" 12 The materials most thoroughly studied entail the oxides 1-9 and sulfides2c, f, 3c'd'10" 12 of transition metals. Among them, Ti02 has received particular attention due to its notable stability against photocorrosion. 1-5· 9 Furthermore, transparent colloidal suspensions of Ti02 can be readily prepar-ed2a_d’9 and offer several advantages:(i) A high specific surface area leads to enhanced catalytic activity. 13 (ii) Both conduction band electrons (eCB “) and valence band holes (hVB+), which are generated by absorption of photons with hvex> Eg (Eg= 3.2 eV= band gap energy), can beused for chemical redox processes. 1415 f Present address: GSF, Instituí für Tieflagerung, D3300 Braunschweig, West Germany.