Fast and real-time acetone gas sensor using hybrid ZnFe2O4/ZnO hollow spheresElectronic supplementary information (ESI) available: Further experimental details on fabrication of gas sensors, the FESEM images, the EDX spot scanning images and detailed sensing performance of sensing materials are listed. See DOI: 10.1039/c6ra12201a
Special hollow ZnFe 2 O 4 /ZnO hybrid spheres were successfully designed and synthesized via a facile hydrothermal procedure. Carbon spheres were used as the core template, which were removed during the calcination process in an air-rich atmosphere, thus leading to interior voids and an outer shell...
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Main Authors | , , , , , |
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Format | Journal Article |
Published |
13.07.2016
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Online Access | Get full text |
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Summary: | Special hollow ZnFe
2
O
4
/ZnO hybrid spheres were successfully designed and synthesized
via
a facile hydrothermal procedure. Carbon spheres were used as the core template, which were removed during the calcination process in an air-rich atmosphere, thus leading to interior voids and an outer shell structure due to the contraction and combustion of the carbon spheres. The hybrid ZnFe
2
O
4
/ZnO hollow spheres not only possess a hollow structure, but also have a porous shell with a thickness of approximately 30 nm. Inspired by this special structure and design composition, a gas sensor based on the hybrid ZnFe
2
O
4
/ZnO hollow spheres showed a high response and fast response/recovery speed compared with nanoparticles. A short response time usually enables a gas sensor to accurately detect and real-time monitor a certain target gas. This study may give insight for the rational fabrication of high performance sensing materials.
Special hybrid ZnFe
2
O
4
/ZnO hollow spheres show excellent acetone sensing properties. |
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Bibliography: | Electronic supplementary information (ESI) available: Further experimental details on fabrication of gas sensors, the FESEM images, the EDX spot scanning images and detailed sensing performance of sensing materials are listed. See DOI 10.1039/c6ra12201a |
ISSN: | 2046-2069 |
DOI: | 10.1039/c6ra12201a |