SnO_2微米线的直接沉淀法制备及其光催化、光电化学性能研究  

Fabrication of SnO_2 microwires using precipitation method and its photoelectrochemical and photocatalyst properties

作　　者：李晓东[1,2] 杨善 黄锡奇 倪春贵 LI Xiaodong;YANG Shan;HUANG Xiqi;NI Chungui(Key Laboratory for Anisotropy and Texture of Materials（Ministry of Education）,Northeastern University,Shenyang 110819,China;Institute of Ceramics and Powder Metallurgy,School of Materials Science and Engineering,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学材料各向异性与织构教育部重点实验室,沈阳110819 [2]东北大学材料科学与工程学院陶瓷与粉末冶金研究所,沈阳110819

出　　处：《功能材料》2018年第8期8026-8030,共5页Journal of Functional Materials

基　　金：国家重点研发计划资助项目(2017YFB0305700);国家自然科学基金委员会与中国工程物理研究院联合基金资助项目(U1630137)

摘　　要：利用简单的直接沉淀法,采用聚乙二醇为导向剂,在常温下合成了SnC_2O_4微米线,其平均轴向长度为109.6μm,直径为0.95μm。经过煅烧后制备了大长径比的SnO_2微米线,并利用扫描电镜、透射电镜、X射线衍射等分析手段对其进行了表征。以罗丹明B为探针反应研究样品的光催化活性,结果表明,由于较大的比表面积、独特的孔结构,4h光催化降解率高达80%,同时探索研究了其光电化学性能,当外偏压为2V时,光电流响应为6.03μA/cm2。SnO2 microwires with average length and diameter of 109.6 and 0.95μm have been synthesized with PEG as a guiding agent using a direct precipitation method followed by a suitable thermal treatment,and characterized by transmission electron microscope（TEM）,scanning electron microscope（SEM）and X-ray diffractometer（XRD）.The photocatalytic activities of the samples were evaluated by analyzing the degradation of rhodamine B（RhB）in aqueous solution.The photocatalytic degradation rate was as high as 80%in 4 hdue to large surface area and porous structure of the synthesized microwires.The photoelectrochemical performance was also investigated.The photocurrent response was 6.03μA/cm2 when the external bias was 2 V.

关 键 词：SnO2微米线 直接沉淀法 光催化 光电化学性能 

分 类 号：TN204[电子电信—物理电子学]