Faculty of Applied Sciences, Department of Chemical Engineering, Materials for Energy Conversion and Storage, Delft University of Technology, P.O. Box 5045, 2600 GA Delft, The Netherlands.
ACS Appl Mater Interfaces. 2013 Aug 14;5(15):7621-5. doi: 10.1021/am401936q. Epub 2013 Jul 24.
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 annealling 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.
在开发高效的纳米结构光电管的过程中，主要面临的挑战之一是对所需形态和良好导电性进行良好的控制。我们提出了一种有效的等离子体处理技术，以在钨基底中形成多孔结构。经过优化的两步退火程序后，介孔钨转化为光活性单斜 WO3。等离子体技术获得的特征尺寸的优异控制和晶粒之间的良好接触为用于太阳能水分解等过程的纳米结构材料提供了令人兴奋的新合成途径。
