Yao Xingyu, Zhao Jinbo, Jin Zhidong, Jiang Zhen, Xu Dongmei, Wang Fenglong, Zhang Xiaomei, Song Haixiang, Pan Duo, Chen Yunxia, Wei Renbo, Guo Zhanhu, Liu Jiurong, Naik Nithesh, Wang Rutao, Wu Lili
Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education and School of Materials Science and Engineering, Shandong University, Jinan, Shandong 250061, China.
School of Materials Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong 250353, China.
ACS Appl Mater Interfaces. 2021 Jun 9;13(22):26278-26287. doi: 10.1021/acsami.1c02176. Epub 2021 May 28.
We report for the first time using zinc hydroxyfluoride (ZnOHF) for efficient NO gas detection. The prepared ZnOHF had a unique flower-like architecture self-assembled by nanorods with a diameter of 150 nm and length of 2-3 μm. The sensing performance toward NO detection indicated that the prepared ZnOHF exhibited high response (82.71), short response/recovery time (13 s/35 s) to 10 ppm of NO, and excellent selectivity at 200 °C, greatly outperforming the ZnO raw material. ZnOHF could work in a wide detection window ranging from 100 ppb to 50 ppm, implying its practical application prospects in both industry and daily life. The excellent sensing behavior of ZnOHF originated mainly from the negligible oxygen ions adsorbed on the material surface, which was caused by the higher work function of ZnOHF. Therefore, almost all conduction band electrons can be used in the NO gas sensing.
我们首次报道了使用羟基氟化锌（ZnOHF）进行高效的NO气体检测。制备的ZnOHF具有独特的花状结构，由直径为150 nm、长度为2 - 3μm的纳米棒自组装而成。对NO检测的传感性能表明，制备的ZnOHF对10 ppm的NO表现出高响应（82.71）、短响应/恢复时间（13 s/35 s），并在200°C时具有优异的选择性，大大优于ZnO原材料。ZnOHF可以在100 ppb至50 ppm的宽检测窗口内工作，这意味着其在工业和日常生活中的实际应用前景。ZnOHF优异的传感行为主要源于材料表面吸附的可忽略不计的氧离子，这是由ZnOHF较高的功函数引起的。因此，几乎所有的导带电子都可用于NO气敏传感。
