Application of microwave-assisted synthesized leaf-like ZnO nanosheets as the ethanol sensor

Abstract

In this study, leaf-like zinc oxide (ZnO) nanosheets were successfully synthesized by the microwave-assisted method through an easy, low-cost solvothermal process with annealing at 500 C. Characterization of the synthesized material revealed the mesoporous single-crystal leaf-like ZnO nanosheets with hexagonal wurtzite structure. Mesoporous and single-crystal structure of gas sensor could provide high surface area, which led to the di usion of gas molecules and improvement of gas sensitivity. Consequently, the gas-sensing function of the leaf-like ZnO nanosheets was tested for di erent types of Volatile Organic Compounds (VOCs). Sensitivity, stability, response, and recovery time of leaf-like ZnO nanosheets sensor for ethanol vapor were the best at 255 C. According to results, leaf-like ZnO nanosheets are a selective and sensitive sensor for ethanol vapor.

Review—Development of Inorganic Nanostructures by Microwave Synthesis Technique

“…In green synthesis technology, microwave (MW) chemistry is appealing as an emerging new approach to control matter at nanoscale and develop desired property materials with nanoscale dimensions in short time. 3,4 For MW chemistry, "selection of green solvents" and "energy efficiency" are the two major principles of green chemistry. [5][6][7] Recently, by adopting MW chemistry, researchers have initiated redesigning various synthetic strategies for developing several materials with desired properties.…”