Needle-like Zn-doped SnO2 nanorods with enhanced photocatalytic and gas sensing properties
Needle-like Zn-doped SnO2 nanorods with enhanced photocatalytic and gas sensing properties
复制标题
具有增强光催化和气敏性能的针状锌掺杂 SnO2 纳米棒
DOI：
10.1088/0957-4484/23/10/105502
复制
发表时间：
2012-03-16
期刊：
影响因子：
3.5
通讯作者：
Shen, Guozhen
中科院分区：
文献类型：
--
作者：
Huang, Hongtao;Tian, Shouqin;Shen, Guozhen
采用简单的水热法大规模制备了Zn掺杂SnO 2纳米棒。采用X射线粉末衍射、扫描电子显微镜、透射电子显微镜、能谱仪、X射线光电子能谱、紫外-可见吸收光谱和光致发光光谱等手段对样品进行了表征。研究发现，产物为沿着[ ]取向生长的针状单晶纳米棒。以酸性品红为降解对象，研究了Zn掺杂SnO 2的光催化性能，结果表明Zn掺杂SnO 2的光催化活性明显高于纯SnO 2纳米棒和块状SnO 2粉体。对甲醛、乙醇和丙酮气体的气敏能力也得到了提高，具有高灵敏度和快速响应。讨论了增强性能的起源。
Zn-doped SnO2 nanorods have been prepared by a simple hydrothermal method on a large scale. The as-prepared samples were characterized by x-ray powder diffraction, scanning electron microscope, transmission electron microscope, energy dispersive spectrometer, x-ray photoelectron spectroscopy, UV–vis absorption spectra and photoluminescence spectra. Studies found that the products are needle-like single-crystalline nanorods grown along the [ ] orientation. The photocatalytic properties of the synthesized Zn-doped SnO2 were investigated by decomposing acid fuchsine, showing much higher photocatalytic activity than pure SnO2 nanorods and bulk SnO2 powders. An enhanced gas sensing ability toward methanal, ethanol and acetone gases is also achieved in high sensitivity and fast response. The origins of the enhanced performances are discussed.