| Title | Nanosheets-assembled hollowed-out hierarchical Co3O4 microrods for fast response/recovery gas sensor |
| Authors | 黄新堂 |
| Issue Date | 2017 |
| Publisher | SENSORS AND ACTUATORS B-CHEMICAL（2020年影响因子：7.460） |
| Keywords | HYDROTHERMAL SYNTHESIS SENSING PROPS NANOFIBERS ROOM-TEMPERATURE NANOSTRUCTURES PERFORMANCE CONVERSION NANORODS FILMS |
| Abstract | Hollowed-out hierarchical Co3O4 microrods has been synthesized via the interfacial-reaction of CoC2O4 center dot 2H(2)O with NaOH. Field emission scanning electron microscopic and transmission electron microscopic results revealed that the Co3O4 samples were hollowed-out hierarchical microrod-like structure assembled by interlaced thin nanosheets (with thickness of around 7 nm). The gas sensing properties of the porous microrods Co3O4 were evaluated. The response/recovery time of the gas sensor to 100 ppm methanol and ethanol are 0.8/7.2 s and 0.8/10.8 s, respectively. Gas sensing measurement revealed that the hollowed-out hierarchical Co3O4 microrods exhibit high performance, especially fast response/recovery characteristics to methanol and ethanol. The enhancement of gas sensing properties is attributed to the thin thickness of nanosheets, large specific surface area, loose interior and through-pore structure. The good sensing performance suggests this hollowed-out hierarchical Co3O4 microrods could be a promising candidate as a sensing material for real-time monitoring gas sensor. (C) 2017 Published by Elsevier B.V. |
| Appears in Collections: | 基科部办公室 |
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