還原型氧化石墨烯-二氧化錫奈米複合材料應用於石英晶體微天平式室溫型氨氣感測器

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Title:	還原型氧化石墨烯-二氧化錫奈米複合材料應用於石英晶體微天平式室溫型氨氣感測器 NH3 gas sensor based on quartz crystal microbalance coated with rGO- SnO2 nanocomposite operating at room-temperature
Authors:	鄭郁萱
Contributors:	化學系應用化學碩士班
Keywords:	氨氣感測器石英晶體微天平品質因子吸附動力學分析 NH3 gas sensing quartz crystal microbalance quality factor adsorption dynamic analysis
Date:	2021
Issue Date:	2023-06-13 10:01:54 (UTC+8)
Abstract:	利用簡單、快速、易於製作之感測材料製作還原型氧化石墨烯-二氧化錫（rGO-SnO2）之石英微天平型（QCM）氨氣（NH3）氣體感測器。本研究使用傅里葉變換紅外光譜（FTIR）、原子力顯微鏡（AFM）、掃描電子顯微鏡（SEM）結合能量色散 X 射線（EDX）元素映射和穿透式電子顯微鏡（TEM）用於分析 rGO-SnO2 複合薄膜在QCM晶片上的形貌、結構和組成。微觀結構觀察顯示，SnO2是附著在 rGO 片材的表面，rGO片材則是裸露在複合膜的表面上。本實驗探討rGO 添加量，對於增加 rGO複合薄膜對NH3的感測特性。另外本實驗利用品質因子（Quality factor）和吸附動力學分析（結合常數）來說明rGO-SnO2複合膜QCM NH3氣體傳感器比原始SnO2膜具有更高的靈敏度。 Novel room-temperature QCM NH3 gas sensors based on rGO-SnO2 composite film were fabricated via one-pot route. This technique is useful for practical application because its fast and ease of fabrication.Fourier transform infrared spectroscopy (FTIR) , atomic force microscopy (AFM) , scanning electron microscopy (SEM) coupled with an energy dispersive X-ray (EDX) elemental mapping and Transmission electron microscope (TEM) were used to analyze the morphology, structure and composition of rGO-SnO2 composite films. Microstructural observations revealed that the SnO2 attached to the surface of rGO sheets, and naked rGO sheets on the surface of the rGO-SnO2 composite film. The effects of the addition amounts of loading of rGO on the enhancing the NH3 gas-sensing properties of the rGO-SnO2 composite films were investigated. The quality (Q) factor and adsorption dynamic analysis (association constant) were used to elucidate the QCM NH3 gas sensor based on rGO-SnO2 composite film had higher sensitivity than that of the pristine SnO2 film.
Appears in Collections:	[Department of Chemistry & Graduate Institute of Applied Chemistry ] thesis

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