Cu2O template-assisted synthesis of porous In2O3 hollow spheres with fast response towards acetone
Cu2O template-assisted synthesis of porous In2O3 hollow spheres with fast response towards acetone
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DOI：
10.1016/j.matlet.2014.03.045
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发表时间：
2014-06
影响因子：
3
通讯作者：
Dan Han;Peng Song;Huihui Zhang;Zhongxi Yang;Qi Wang
中科院分区：
文献类型：
--
作者：
Dan Han;Peng Song;Huihui Zhang;Zhongxi Yang;Qi Wang
具有中空结构和形貌的金属氧化物半导体材料作为气敏元件具有广阔的应用前景，引起了人们的广泛关注。基于皮尔逊软硬酸碱原理，以CuO为牺牲模板，采用模板辅助法成功制备了多孔In2O3空心球。通过简单的化学反应制备了In（OH）3空心球前驱体，然后将前驱体热分解得到In2O3空心球。采用X射线衍射（XRD）、场发射扫描电子显微镜（FESEM）和透射电子显微镜（TEM）对Cu2O模板和In2O3产物的成分和形貌进行了表征。结果表明，最终产物为纯In2O3，具有空心球结构，球壳厚度约为15 nm。最后，对In2O3空心球气敏元件的性能测试表明，该空心球具有对丙酮气体快速响应的优良特性。
Metal oxide semiconductors with hollow structure and morphology have attracted considerable attention because of their promising application as gas sensors. Based on Pearson׳s hard and soft acid–base (HSAB) principle, we have successfully prepared porous In2O3hollow spheres by a template-assisted method using Cu2O as the sacrificial template. In(OH)3hollow spheres as the precursor were prepared via simple chemical reactions, then In2O3hollow spheres can be obtained by thermal decomposition of the precursor. The composition and morphologies of Cu2O templates and In2O3products were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM). The results suggest that the final products were pure In2O3with the structure of hollow spheres, and the thickness of the spherical shell is about 15 nm. Finally, the gas sensor performance testing of In2O3hollow spheres showed the excellent properties of rapid response towards acetone gas.