Zn1-xCoxO纳米稀磁半导体的光催化性能  

Photocatalytic properties of Zn1-xCoxO nano-diluted magnetic semiconductor

作　　者：张克诚 王健 马龙 马强 韦琪龙 魏智强[2] 曹辉[3] 李琼[3] ZHANG Ke-cheng;WANG Jian;MA Long;MA Qiang;WEI Qi-long;WEI Zhi-qiang;CAO Hui;LI Qiong(Gansu Fifth Construction Group Company,Tianshui 741000,China;School of Science,Lanzhou University of Technology,Lanzhou 730050,China;Key laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]甘肃第五建设集团公司,甘肃天水741000 [2]兰州理工大学理学院,甘肃兰州730050 [3]兰州理工大学甘肃省土木工程防灾减灾重点实验室,甘肃兰州730050

出　　处：《材料热处理学报》2020年第3期76-81,共6页Transactions of Materials and Heat Treatment

基　　金：国家自然科学基金(51261015);甘肃省自然科学基金(1308RJZA238);甘肃省青年科技基金(2017GS10910)。

摘　　要：通过水热法合成了不同掺杂比例的一维Zn1-xCoxO(x=0,0.03,0.06和0.09)纳米棒,并通过X射线衍射(XRD)、高分辨透射电镜(HRTEM)、紫外可见光吸收光谱(UV-vis)和振动样品磁强计(VSM)等研究了样品的晶体结构、形貌、磁性能、光吸收性能和光催化性能。结果表明:不同掺杂比例的Zn1-xCoxO均为结晶良好的六方纤锌矿结构,Co2+以替代Zn2+的形式进入到ZnO晶格中。样品形貌为一维纳米棒状结构,分散性良好。Co掺杂ZnO使得样品的能带隙减小,可见光吸收增加。掺杂样品在室温下具有明显的铁磁性,掺杂样品能增强降解有机染料罗丹明B(RhB)的光催化活性。One-dimensional Zn1-xCoxO(x=0,0.03,0.06 and 0.09)nanorods with different doped ratios were synthesized by hydrothermal method,and the crystal structure,morphology,magnetic properties,optical absorption and photocatalytic properties of the samples were studied by means of X-ray diffraction(XRD),high resolution transmission electron microscopy(HRTEM)ultraviolet and visible light absorption spectroscopy(UV-vis)and vibrating sample magnetometer(VSM).The results show that the Zn1-xCoxO with different doping ratios are hexagonal wurtzite structures with good crystallization,and Co2+enters the ZnO lattice in the form of replacing Zn2+.The morphology of the sample is one-dimensional nanorod structure and the dispersion is good.Co-doping ZnO reduces the energy band gap and increases the visible light absorption of the sample.The doping samples have obvious ferromagnetism at room temperature,and the doping samples can enhance the photocatalytic activity of degradation of organic dye Rhodamine B(RhB).

关 键 词：CO掺杂 ZNO 纳米棒 铁磁性 光催化 

分 类 号：TG132.2[一般工业技术—材料科学与工程]