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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Molybdenum-titanium oxo-cluster, an efficient electrochemical catalyst for the facile preparation of black titanium dioxide film
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Molybdenum-titanium oxo-cluster, an efficient electrochemical catalyst for the facile preparation of black titanium dioxide film

机译：钼 - 钛氧代簇，一种有效的电化学催化剂，用于薄氧化物薄膜的薄层制备

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Black-TiO2 has become increasingly interesting as a promising photoactive material. Most of the preparations for black-TiO2 involve either high temperature calcination, plasma, lengthy chemical reactions or dealing with dangerous or toxic chemicals. We found, by accident, that Mo-Ti oxo-clusters are efficient catalysts for the hydrogenation of a TiO2 electrode to black-TiO2 at room temperature. A series of Mo-Ti oxo-clusters, [Ti4Mo4O10(OR)(14)(X-BA)(2)] (BA = benzoate, X = H (1), F (2), Cl (3), and Br (4)), were prepared and were characterized by crystallography. They have a Mo4Ti4 structure with Mo(v)-Mo(v) metal-metal interactions. The activated hydrogen (H*) generated by electrochemically catalytic water splitting turns the TiO2 electrode to black-TiO(2)at room temperature, due to the reduction of Ti(iv) to H+Ti(iii). The potentials applied for water reduction must generally be higher than the overpotential at the TiO2 electrode (-1.0 Vvs.RHE). In this work, the onset potential of hydrogen evolution significantly decreased to -0.1 Vvs. RHE. Using this blackened 1-TiO2 electrode, the effective electrochemical catalytic degradation of a dye was examined in comparison with the degradation using the white TiO2 electrode. This work provides a method for the facile preparation of a black-TiO2 film, and is a step forward in black-TiO2 research.
机译：黑色TiO2随着有希望的光活性物质而越来越有趣。 Black-TiO2的大多数制剂涉及高温煅烧，血浆，冗长的化学反应或处理危险或有毒化学品。我们发现，缺乏Mo-Ti Oxo-簇是在室温下为黑色TiO 2氢化TiO 2电极的有效催化剂。一系列Mo-​​Ti氧代簇，[Ti4MO4O10（或）（14）（X-Ba）（2）]（Ba =苯甲酸盐，X = H（1），F（2），Cl（3），和Br（4））被制备并进行了结晶学。它们具有MO4TI4结构，具有MO（v）-mo（v）金属 - 金属相互作用。通过电化学催化水分解产生的活化氢气（H *）将TiO 2电极在室温下将TiO 2电极（2）变成黑色 - TiO（2），因为Ti（IV）还原为H + Ti（III）。施加的水还原的电位通常必须高于TiO 2电极（-1.0VVS.RHE）的过电位。在这项工作中，氢化的发作潜力显着降低至-0.1VV。 rhe。使用这种黑化的1-TiO 2电极，与使用白色TiO2电极的降解相比，检查染料的有效电化学催化降解。这项工作提供了一种用于Blactile制备Black-TiO2薄膜的方法，并且是Black-TiO2研究的前进。

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