具有增强室温光激活甲苯传感性能的石墨烯包裹氧化锌纳米复合材料

Graphene-Wrapped ZnO Nanocomposite with Enhanced Room-Temperature Photo-Activated Toluene Sensing Properties.

作者信息

Huang Qingwu, Wu Jinjin, Zeng Dawen, Zhou Peng

机构信息

Analytical and Testing Center of Huazhong University of Science and Technology, Huazhong University of Science and Technology, No. 1037, Luoyu Road, Wuhan 430074, China.

Nanomaterials and Smart Sensors Laboratory (NSSL), Department of Materials Science and Engineering, Huazhong University of Science and Technology, No. 1037, Luoyu Road, Wuhan 430074, China.

出版信息

Materials (Basel). 2024 Feb 22;17(5):1009. doi: 10.3390/ma17051009.

DOI:10.3390/ma17051009

PMID:38473480

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10934513/

Abstract

Graphene-wrapped ZnO nanocomposites were fabricated by a simple solvothermal technology with a one-pot route. The structure and morphology of these as-fabricated samples were systematically characterized. The adding of graphene enhanced the content of the oxygen vacancy defect of the sample. All gas-sensing performances of sensors based on as-prepared samples were thoroughly studied. Sensors displayed an ultrahigh response and exceptional selectivity at room temperature under blue light irradiation. This excellent and enhanced toluene gas-sensing property was principally attributed to the synergistic impacts of the oxygen vacancy defect and the wrapped graphene in the composite sensor. The photo-activated graphene-wrapped ZnO sensor illustrated potential application in the practical detection of low concentrations of toluene under explosive environments.

摘要

采用简单的溶剂热技术通过一锅法制备了石墨烯包裹的ZnO纳米复合材料。对这些制备好的样品的结构和形貌进行了系统表征。石墨烯的加入提高了样品中氧空位缺陷的含量。对基于所制备样品的传感器的所有气敏性能进行了深入研究。传感器在室温下蓝光照射下表现出超高的响应和优异的选择性。这种优异且增强的甲苯气敏性能主要归因于复合传感器中氧空位缺陷和包裹的石墨烯的协同作用。光激活的石墨烯包裹的ZnO传感器在爆炸环境下低浓度甲苯的实际检测中显示出潜在应用。