CAJ | 학술논문

以六水合硝酸锌和尿素为原料,水为反应介质,油酸作为表面活性剂,经水热过程合成了由纳米片组装的碱式碳酸锌微球前驱体,经煅烧后得到形貌一致的氧化锌(ZnO)纳米片组装的杨桃状微球.采用X射线衍射仪(XRD)和环境扫描镜(SEM)对样品进行表征,结果表明产物为六方纤维矿结构的ZnO,微球尺寸比较均一,直径约为20 μm,组装单元扇形ZnO纳米片均匀排列,单元之间存在均匀空隙,BET测试显示纳米片呈现多级介孔结孔结构,比表面积为18.9 m~2·g~(-1),室温下的光致发光性能表明其结构表面存在大量氧空位,对产物ZnO气敏元件进行了乙醇和丙酮气体敏感性测试.
이륙수합초산자화뇨소위원료,수위반응개질,유산작위표면활성제,경수열과정합성료유납미편조장적감식탄산자미구전구체,경단소후득도형모일치적양화자(ZnO)납미편조장적양도상미구.채용X사선연사의(XRD)화배경소묘경(SEM)대양품진행표정,결과표명산물위륙방섬유광결구적ZnO,미구척촌비교균일,직경약위20 μm,조장단원선형ZnO납미편균균배렬,단원지간존재균균공극,BET측시현시납미편정현다급개공결공결구,비표면적위18.9 m~2·g~(-1),실온하적광치발광성능표명기결구표면존재대량양공위,대산물ZnO기민원건진행료을순화병동기체민감성측시.
Zn_4(CO_3)(OH)_6·H_2O were prepared via the hydrothermal process by using zinc nitrate hexahydrate and area as the raw materials,oleic acid as the template agent.The corresponding ZnO nanosheets-based carambola-like micropheres was obtained after calcinations of precursors.The samples were characterized by using X-ray diffraction (XRD)and scanning electron microscopy(SEM).Work shows the product was the hexagonal wurtzite structure of ZnO,and has a homogeneous size distribution of 20μm.Room-temperature photoluminescence(PL)spectra appear there are large numbers of oxygen vacancies on the ZnO surface.The gas sensing has been tested.Result indicates that of ZnO nanostructure has high sensitivity and short response time to ethanol and acetone gases.