以陶瓷球为载体的铁掺杂氧化锌纳米棒光催化降解甲醛气体

采用简单的湿化学法在陶瓷球上制备了纯氧化锌和铁掺杂的氧化锌纳米棒。利用X射线衍射仪（XRD）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）和紫外可见分光光度计（UV-Vis）对样品的结构、形貌和光学性能进行了结构表征和分析。研究了纯氧化锌及铁掺杂的氧化锌在紫外光照射下对甲醛气体的降解效率。结果表明与纯氧化锌相比，铁掺杂的催化剂表现出更优越的光催化活性。当Fe的掺杂量为4%时，催化剂对甲醛的降解效率最高。催化剂具有良好的稳定性，可以重复利用，循环使用10次之后，催化效率仍可达到85%。

Photocatalytic Degradation of Gaseous Formaldehyde by Fe-Doped ZnO Nanorods Grown on Ceramic Spheres

Zinc oxide (ZnO) and Fe doped ZnO nanorods were fabricated on ceramic balls by a simple low cost wet-chemical route. The as-prepared samples were characterized by XRD, SEM, TEM and UV-Vis spectroscopy. Photocatalytic activities of pure ZnO and Fe doped ZnO nanorods were investigated for degradation of formaldehyde gas under UV irradiation. The results show that doped catalyst exhibits superior photocatalytic performance than that of pure ZnO nanorods and 4% Fe doping catalyst displays the optimal photoactivity. The catalyst has good stability and is easy to be recoverd. The catalytic efficiency still maintains 85% after 10 cycls.