Tên bài báo:Room Temperature Violate Organic Compound Sensor Based on Functional Multi-Wall Carbon Nanotubes Coated Quartz Crystal Microbalance
A sensor based on quartz crystal microbalance (QCM) coated high-crystallinity multi-wall carbon nanotubes (MWNTs) was developed. A purification process was performed to remove amorphous carbon and inactivated catalyst particles that remained in the MWNTs. The functional MWNTs were diluted and dispersed in the n, n-dimethylformamide (DMF), with the aid of an ultrasonic and magnetic stirrer. A centrifugal machine was used to reject the residue in the functional MWNT-DMF solution. A spray-coating method was performed to deposit the functional MWNTs on the gold electrode of the QCM, as a room-temperature violate organic compound (VOC) sensor. The functional MWNTs-coated QCM sensor was tested with various concentrations of numerous VOCs, including ethanol, acetone, isopropanol and butanol. The testing results show that the fabricated sensor exhibits high performance with ethanol vapour at room temperature.
Ngô Xuân Đinh
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