Hydrothermal Synthesis of Hierarchical Ultrathin NiO Nanoflakes for High-Performance CH4 Sensing

摘要

Methane (CH4), as a colorless and odorless gas, is the main component of natural gas and widely used in various industries and human daily life (Schoonbaert et al., 2015).However, the leakage of natural gas, oil and gas storage, transportation and distribution systems increase atmospheric CH4 concentration levels and lead to serious climate changes, which must be addressed (Zheng et al., 2017).Additionally, CH4 will be easy to explode in a range of concentration (5–15%).Therefore, it is necessary to develop rapid and accurate gas sensors for CH4 detection.