纳米棒
材料科学
丙酮
扫描电子显微镜
二甲苯
吸附
苯
选择性
化学工程
甲醇
静电纺丝
醋酸
分析化学(期刊)
乙醇
纳米技术
复合数
纳米结构
复合材料
色谱法
有机化学
聚合物
化学
催化作用
工程类
作者
Xiang-Bing Li,Da-Qian Mo,Xiaoyan Niu,Qianqian Zhang,Shenglin Ma,Wenqiang Dang,Lijun Zhang,Yuxiang Zhao,Xiaobin Liu,Qing Liu,Limin Zhao,Yuping Wang
标识
DOI:10.1142/s0217984921503954
摘要
ZnO–SnO 2 composite nanorods with rough surfaces were synthesized via a coaxially nested needle electrospinning method. The morphology and nanostructure were characterized by scanning electron microscopy, atomic force microscope, EDS mapping, nitrogen physical adsorption, and X-ray diffraction. The synthesis mechanisms of ZnO–SnO 2 nanorods were discussed, which combined the gas sensitivity advantages of different materials. ZnO–SnO 2 nanorods sensor with good ethanol gas sensitivity achieved accurate measurement of continuous ethanol concentration. The sensor exhibited good selectivity to ethanol in the presence of formaldehyde, methanol, acetone, acetic acid, benzene, and xylene at 290[Formula: see text]C. The response and recovery time to 100 ppm ethanol were about 13 and 35 s, respectively. The energy band, barrier, charge transfer of ZnO–SnO 2 composite material was discussed, and its optimization of gas sensitivity was analyzed in detail.
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