期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 176, 期 -, 页码 405-412出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2012.10.091
关键词
In2O3; Hydrothermal; Hierarchical; Gas sensing; NO2
资金
- NSFC [61074172, 61006055, 61134010, 61104203]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT1017]
- Jilin Province Science and Technology Development Plan Program [20106002]
In this work, flower-like In2O3 hierarchical microspheres were successfully synthesized by a facile hydrothermal then sinter process with the help of surfactant sodium dodecyl sulfonate. The assynthesized samples were characterized using X-ray powder diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and high-resolution transmission electron microscopy (HRTEM). The results revealed that In2O3 microspheres are built from nanosheets. These sheets, analogous to a chrysanthemum, are aligned to the spherical surface, pointing toward a common center. The sensing performance of the as-obtained In2O3 for NO2 was evaluated at 150 degrees C. The results revealed that the novel In2O3 exhibited good gas-sensing properties, indicating its practical potential for detecting NO2 of ppb levels. (C) 2012 Elsevier B.V. All rights reserved.
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