Synthesis and enhanced acetone gas-sensing performance of ZnSnO3/SnO2 hollow urchin nanostructures
Synthesis and enhanced acetone gas-sensing performance of ZnSnO3/SnO2 hollow urchin nanostructures
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DOI：
10.1007/s11051-017-4094-1
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发表时间：
2017-12
影响因子：
2.5
通讯作者：
D. Lian;Bing Shi;Rongrong Dai;Xiaohua Jia;Xiangyang Wu
中科院分区：
文献类型：
--
作者：
D. Lian;Bing Shi;Rongrong Dai;Xiaohua Jia;Xiangyang Wu
A kind of novel ZnSnO3/SnO2hollow urchin nanostructure was synthesized by a facile, eco-friendly two-step liquid-phase process. The structure, morphology, and composition of samples were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and nitrogen adsorption–desorption techniques. The results revealed that many tiny needle-like SnO2nanowires with the average diameter of 5 nm uniformly grew on the surface of the ZnSnO3hollow microspheres and the ZnSnO3/SnO2hollow urchin nanostructures with different SnO2content also were successfully prepared. In order to comprehend the evolution process of the ZnSnO3/SnO2hollow urchin nanostructures, the possible growth mechanism of samples was illustrated via several experiments in different reaction conditions. Moreover, the gas-sensing performance of as-prepared samples was investigated. The results showed that ZnSnO3/SnO2hollow urchin nanostructures with high response to various concentration levels of acetone enhanced selectivity, satisfying repeatability, and good long-term stability for acetone detection. Specially, the 10 wt% ZnSnO3/SnO2hollow urchin nanostructure exhibited the best gas sensitivity (17.03 for 50 ppm acetone) may be a reliable biomarker for the diabetes patients, which could be ascribed to its large specific surface area, complete pore permeability, and increase of chemisorbed oxygen due to the doping of SnO2.
