Eco-materials and Renewable Energy Research Center, Nanjing University, Nanjing, People's Republic of China.
Nanotechnology. 2010 Feb 10;21(6):065703. doi: 10.1088/0957-4484/21/6/065703. Epub 2010 Jan 8.
A highly (110)-oriented ZnO porous nanosheet framework is designed as the photoanode in photoelectrochemical systems, by virtue of its anisotropic electronic properties. It can be facilely prepared in large scale via a hydrothermal method. X-ray diffraction (XRD) analyses show that the orientation index of the (110) diffraction plane is 3.54, indicating the films possess (110) preferred orientation. Field-emission scanning electron microscope (FE-SEM) images exhibit that most of the nanosheets stand nearly perpendicularly on the substrate. The {002} lattice planes work just like conducting wires and induce the electrons to transport to the substrate. Chronoamperometry measurement demonstrates an effective electron collection. When the nanostructured photoanode is introduced to dye-sensitized solar cells, a conversion efficiency of 3.7% is obtained. The photoanode also has potential application in the other photoelectrochemical systems, such as photocatalytical splitting of water.
一种高度（110）取向的 ZnO 多孔纳米片框架被设计为光电化学系统中的光阳极，这得益于其各向异性的电子特性。它可以通过水热法在大规模上轻松制备。X 射线衍射（XRD）分析表明，（110）衍射平面的取向指数为 3.54，表明薄膜具有（110）择优取向。场发射扫描电子显微镜（FE-SEM）图像显示，大多数纳米片几乎垂直于基底。{002}晶格平面就像电线一样，诱导电子传输到基底。计时电流测量证明了有效的电子收集。当将纳米结构光阳极引入染料敏化太阳能电池时，获得了 3.7%的转换效率。该光阳极在其他光电化学系统中也有潜在的应用，例如光催化水分解。
