Abstract
Preparation of Graphene Quantum Dots and Their Sensing Properties in Quartz Crystal Microbalance Acetone Sensor
Highlights
With the acceleration of the pace of life, the air pollution caused by human activities is gradually increasing
The general trend can be seen from the figure: the frequency offset increases with the thickness of the sensitive film, indicating that the gas-sensing property of the graphene quantum dots (GQDs) nanomaterial is related to the thickness of the coated film
It is of practical significance to study acetone sensors operating at room temperature (RT)
Summary
With the acceleration of the pace of life, the air pollution caused by human activities is gradually increasing. In 2019, Ming-Jiang and Bing-Ying[12] prepared copper oxide/zinc oxide (CuO/ZnO) nanostructured flowers by a lowtemperature hydrothermal method Their newly designed thin-film acetone gas sensor showed a wide linear range (10–300 mg/cm acetone) at a working temperature of 200 °C. Top-down methods include electron beam lithography, acid oxidative stripping, microwave assistance, hydrothermal synthesis, and electrochemical oxidation.[18,19,20,21] This preparation route has the advantages of abundant raw materials, simple operation, and mass production and the disadvantages of high requirements in terms of equipment, easy destruction of the aromatic structure of graphite, and the incapability of accurately controlling the form and size of the synthesized product.
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