具有高比表面积和丰富氧空位的多孔氧化锌超薄纳米片用于乙酰丙酮气敏传感
Porous ZnO Ultrathin Nanosheets with High Specific Surface Areas and Abundant Oxygen Vacancies for Acetylacetone Gas Sensing.
作者信息
Liu Fengjun, Wang Xinzhen, Chen Xiaoyan, Song Xiaojie, Tian Jian, Cui Hongzhi
机构信息
School of Materials Science and Engineering , Shandong University of Science and Technology , Qingdao , Shandong 266590 , People's Republic of China.
出版信息
ACS Appl Mater Interfaces. 2019 Jul 10;11(27):24757-24763. doi: 10.1021/acsami.9b06701. Epub 2019 Jun 27.
In this study, porous ZnO ultrathin nanosheets with abundant surface oxygen vacancies were prepared by a hydrothermal technique followed by an annealing method using graphene oxide (GO) as a template. The high specific surface area of GO with ultrathin thickness provided an important template for the ZnO ultrathin nanosheets. The as-prepared porous ZnO ultrathin nanosheets exhibited superior acetylacetone sensing performance. The sensor response of the porous ZnO ultrathin nanosheets was 191.1 for 100 ppm acetylacetone, which was approximately 4 times higher than that of ZnO clusters (prepared without GO template) at 340 °C. The porous ZnO ultrathin nanosheets also exhibited excellent selectivity and operational stability. The excellent gas sensing performance of the porous ZnO ultrathin nanosheets was due to their high specific surface area (130.5 m/g) and abundant surface oxygen vacancy.
在本研究中，采用水热法，随后以氧化石墨烯（GO）为模板进行退火处理，制备出具有丰富表面氧空位的多孔ZnO超薄纳米片。厚度超薄的GO具有高比表面积，为ZnO超薄纳米片提供了重要模板。所制备的多孔ZnO超薄纳米片表现出优异的乙酰丙酮传感性能。对于100 ppm的乙酰丙酮，多孔ZnO超薄纳米片的传感器响应为191.1，在340℃时约为ZnO团簇（无GO模板制备）的4倍。多孔ZnO超薄纳米片还表现出优异的选择性和操作稳定性。多孔ZnO超薄纳米片优异的气敏性能归因于其高比表面积（130.5 m/g）和丰富的表面氧空位。
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