4.6 Article

Cu2O template-assisted synthesis of porous In2O3 hollow spheres with fast response towards acetone

期刊

MATERIALS LETTERS
卷 124, 期 -, 页码 93-96

出版社

ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2014.03.045

关键词

In2O3; Semiconductors; Hollow spheres; Cu2O templates; Sensors

资金

  1. National Natural Science Foundation of China [61102006, 51172095]
  2. Natural Science Foundation of Shandong Province, China [ZR2010EQ009]

向作者/读者索取更多资源

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 In2O3 hollow spheres by a template-assisted method using Cu2O as the sacrificial template. In(OH)(3) hollow spheres as the precursor were prepared via simple chemical reactions, then In2O3 hollow spheres can be obtained by thermal decomposition of the precursor. The composition and morphologies of Cu2O templates and In2O3 products 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 In2O3 with the structure of hollow spheres, and the thickness of the spherical shell is about 15 nm. Finally, the gas sensor performance testing of In2O3 hollow spheres showed the excellent properties of rapid response towards acetone gas. (C) 2014 Elsevier B.V. All rights reserved.

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