期刊
RSC ADVANCES
卷 5, 期 98, 页码 80561-80567出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra14793j
关键词
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资金
- National Natural Science Foundation of China [61404058, 61274068]
- Chinese National Programs for High Technology Research and Development [2013AA030902]
- Project of Science and Technology Plan of Changchun City [14KG020]
- Opened Fund of the State Key Laboratory on Integrated Optoelectronics [IOSKL2013KF10]
A one-step hydrothermal method assisted by polyvinylpyrrolidone (PVP) and polyvinyl alcohol (PVA) was developed to synthesize hexagonal ZnO nanorings. X-ray diffractometry (XRD) and scanning electron microscopy (SEM) were used to characterize the as as-prepared ZnO nanorings and deduce the possible formation mechanism. The as-prepared ZnO nanorings showed the well-defined hexagonal shape with a width of 0.75-1.4 mu m, a thickness of 0.17-0.33 mu m and a hollow size of 0.2-1 mu m. The trimethylamine (TMA) sensing performance of the hexagonal ZnO nanorings was tested. The results indicated that the hexagonal ZnO nanorings showed a high response (47 to 100 ppm TMA), fast response/recovery rate (less than 23 s and 37 s, respectively), wide linearity in a relatively wide range (1-200 ppm TMA), low detectable TMA minimum concentration (less than 5 ppm) and good selectivity to TMA. In addition, the TMA-sensing mechanism of the hexagonal ZnO nanorings was also discussed.
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