抄録
Hierarchical α-Fe2O3/NiO composites with a hollow nanostructure were synthesized by a facile hydrothermal method. The structures and morphologies of the composites were investigated by different kinds of techniques, including X-ray diffraction, field-emission electron scanning microscopy, transmission electron microscopy, and energy dispersive spectroscopy. Hierarchical α-Fe2O3/NiO composites were fabricated by growing the α-Fe2O3 nanorods on the surfaces of porous NiO nanosheets with a thickness of ∼12 nm. The gas sensing properties of hierarchical α-Fe2O3/NiO composites toward toluene were investigated using a static system. The response of α-Fe2O3/NiO composites to 100 ppm toluene was ∼18.68, which was 13.18 times higher than that of pure NiO at 300 °C. The enhanced response can be attributed to heterojunction. Meanwhile, the rapid response and recovery characteristics were observed because of the porous hollow structural characteristics and catalytic actions of α-Fe 2O3 and NiO.
本文言語 | 英語 |
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ページ(範囲) | 12031-12037 |
ページ数 | 7 |
ジャーナル | ACS Applied Materials and Interfaces |
巻 | 6 |
号 | 15 |
DOI | |
出版ステータス | 出版済み - 8月 13 2014 |
!!!All Science Journal Classification (ASJC) codes
- 材料科学(全般)