Efficient Plasma Route to Nanostructure Materials: Case Study on the Use of m-WO3 for Solar Water Splitting
Efficient Plasma Route to Nanostructure Materials: Case Study on the Use of m-WO3 for Solar Water Splitting
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DOI：
10.1021/am401936q
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发表时间：
2013-08-14
影响因子：
9.5
通讯作者：
van de Krol, Roel
中科院分区：
文献类型：
--
作者：
de Respinis, Moreno;De Temmerman, Gregory;van de Krol, Roel
开发高效纳米结构光电极的主要挑战之一是实现对所需形态和良好导电性的良好控制。我们提出了一种有效的等离子体处理技术，在钨基板上形成多孔结构。经过优化的两步退火程序，介孔钨转化为光活性单斜晶系WO3。对特征尺寸的良好控制和用等离子体技术获得的微晶之间的良好接触为用于诸如太阳能水分解的过程的纳米结构材料提供了令人兴奋的新合成路线。
One of the main challenges in developing highly efficient nanostructured photoelectrodes is to achieve good control over the desired morphology and good electrical conductivity. We present an efficient plasma-processing technique to form porous structures in tungsten substrates. After an optimized two-step annealing procedure, the mesoporous tungsten transforms into photoactive monoclinic WO3. The excellent control over the feature size and good contact between the crystallites obtained with the plasma technique offers an exciting new synthesis route for nanostructured materials for use in processes such as solar water splitting.