Visible Light-Driven Photoelectrochemical Conversion of the By-Products of the Ethanol Fuel Cell into Hydrogen
Visible Light-Driven Photoelectrochemical Conversion of the By-Products of the Ethanol Fuel Cell into Hydrogen
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DOI：
10.1149/1.3236383
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发表时间：
2009-12
影响因子：
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通讯作者：
Piotr J. Barczuk;A. Lewera;K. Miecznikowski;P. Kulesza;J. Augustynski
中科院分区：
文献类型：
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作者：
Piotr J. Barczuk;A. Lewera;K. Miecznikowski;P. Kulesza;J. Augustynski
由于其化学转化效率低，直接乙醇燃料电池产生约90%的部分氧化副产物乙酸和乙醛。在这里，我们描述了一种方法，允许人们使用这些不受环境欢迎的物种来生产氢。所述的可见光驱动光电电化学装置采用能够有效氧化ch3cooh和ch3cho的介孔三氧化钨wo3光阳极和产氢金属阴极。wo3薄膜光阳极的带隙能量为2.5 eV，可吸收500 nm范围内电磁波谱的蓝绿部分。
Because of its low chemical conversion efficiency, the direct ethanol fuel cell forms about 90% of partial oxidation by-products, acetic acid and acetaldehyde. Here, we describe a method allowing one to use these environmentally undesirable species to produce hydrogen. The described visible light-driven photoelectrochemical device employs a mesoporous tungsten trioxide, WO 3 , photoanode able to efficiently oxidize CH 3 COOH and CH 3 CHO, and a hydrogen-producing metal cathode. With its bandgap energy of 2.5 eV, the WO 3 film photoanode absorbs blue-green portions of the electromagnetic spectrum up to 500 nm.