Cataluminescence gas sensor for ketones based on nanosized NaYF4:Er
Cataluminescence gas sensor for ketones based on nanosized NaYF4:Er
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DOI：
10.1016/j.snb.2015.08.048
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发表时间：
2016
影响因子：
8.4
通讯作者：
Jie Tang;Hongjie Song;Binrong Zeng;Lichun Zhang;Yi Lv
中科院分区：
文献类型：
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作者：
Jie Tang;Hongjie Song;Binrong Zeng;Lichun Zhang;Yi Lv
开发了一种基于纳米 NaYF4:Er 表面产生的催化发光的新型酮类气体传感器。采用简单的水热法合成了传感材料NaYF4:Er，并通过粉末X射线衍射、扫描电子显微镜和能谱仪对其进行了表征。研究了Er3+掺杂浓度和NaYF4:Er结晶度对CTL强度的影响。当Er3+掺杂浓度达到20%时，材料表现出优异的酮类传感特性。在以丙酮和丁酮为代表的最佳实验条件下，气体传感器具有快速响应（3 s）和相对较低的工作温度（250℃）。丙酮的催化发光强度与浓度的线性范围为 2.388–143.28 µg mL−1，丁酮的线性范围为 2.45–49.0 µg mL−1，检测限（信噪比为 3）分别为 1.7 μg mL−1 和 0.7 μg mL−1。国外11种共有物质干扰很小，表明CTL传感器对酮类具有较高的选择性。
A novel gas sensor toward ketones based on cataluminescence generated on the surface of nanosized NaYF4:Er was developed. The sensing materials NaYF4:Er was synthesized by a simple hydrothermal method and characterized by powder X-ray diffraction, scanning electron microscope and energy dispersive X-ray spectroscopy. The effect of Er3+doping concentration and crystallinity of NaYF4:Er on the CTL intensity were studied. When the Er3+doping concentration reaches 20%, the materials show excellent sensing characteristics for ketones. Under the optimal experimental conditions, as represented by the acetone and butanone, the gas sensor has fast responses (3 s) and relatively low work temperature (250 °C). The linear range of cataluminescence intensity versus concentration were 2.388–143.28 μg mL−1for acetone and 2.45–49.0 μg mL−1for butanone, with a detection limit (signal-to-noise ratio is 3) of 1.7 μg mL−1and 0.7 μg mL−1, respectively. Foreign 11 substances in common have little interference which indicates the high selectivity of the CTL sensor for ketones.