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Development of New Optical Gas Sensors Based On Perovskite Quantum Dots / 里斯.

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摘要註

比例式光學感測器與光學式雙感測器在氣體感測技術越來越受到重視，尤其是在工業、健康與環境應用上。目前利用螢光檢測進行氣體雙感測技術的方式較為廣泛應用且容易製作。 因此，本研究利用靜電紡絲結合鈣鈦礦量子點，開發新型的光學式一氧化氮與氧氣雙感測器，利用氧氣感測材料platinum (II) meso-tetrakis (pentafluorophenyl) porphyrin (PtTFPP)參雜在醋酸纖維素(cellulose acetate)基材中製作靜電紡絲氧氣感測膜，其中靜電紡絲參數之流速為3 mL/Hr，電壓為15 KV，紡絲菇做距離為15 cm；並且以鈣鈦礦量子點作為一氧化碳感測材料，再將之塗佈在靜電紡絲氧氣感測膜之表面進行氧氣與一氧化氮同時檢測。 而比例式光學氧氣感測器則是利用鈣鈦礦樣子點做為氧氣感測材料，羅丹明110作為參考材料，將鈣鈦礦氧氣感測材料與羅丹明110 (Rh110)參考材料與乙基纖維素(ethylcellulose)結合並塗佈在濾紙表面，利用中心波長為380nm的LED去同時激發鈣鈦礦氧氣感測材料與羅丹明110參考材料，此時會產生兩個互不干擾的放射螢光波段，並分別檢測其放射螢光強度，利用其放射螢光強度比例值進行比例式光學氧氣感測器之設計。 實驗結果顯示，本研究所開發之光學式雙感測器在一氧化氮與氧氣感測之靈敏度分別為2.7與10.7。而光學式雙感測器在一氧化氮感測之反應速度與回復速度分別為10秒與35秒；在氧氣感測之反應速度與回復速度分別為20秒與60秒。而本研究開發的比例式光學氧氣感測器靈敏度為12.7。除此之外，比例式光學氧氣感測器的靈敏度定義為R0/R100，R0與R100分別表示感測器在100%氮氣與100氧氣狀態下的放射螢光強度比值。本研究之比例式光學氧氣感測器反應速度與回復速度分別為75秒與93秒。 本研究利用 Simultaneous and ratiometric development of multiple gas sensors has drawn particular attention to advances in gas sensor sensing technology, where gas sensors play an important role in industrial, health, and environmental applications so that the sensing of dual gas sensors with a variety of single fluorescence methods has been widely developed to make dual sensors that are applicable and easy to manufacture. This study presents a new optical sensing dual gas sensor based on a single fiber and perovskite QDs for the detection of nitric oxide (NO) and oxygen (O2) gases, wherein platinum (II) meso-tetrakis (pentafluorophenyl) porphyrin (PtTFPP) complex produced as a single fiber for O2-sensitive indicator signal immobilized in cellulose acetate (CA) matrix. The single fiber is created using the material platinum (II) meso-tetrakis (pentafluorophenyl) porphyrin (PtTFPP) complex in the electrospinning process with flow rate parameters 3mL/Hr, voltage 15Kv, and distance 15cm. CsPbBr3 perovskite QDs were used as NO-sensitive indicator signals, coated on single Pt (II) complex fibers. Similarly, ratiometric optical oxygen sensors based on FAPbI3 perovskite QDs are used as an indicator of the sensitivity of oxygen gas (O2). Rhodamine 110 (Rh 110) is a reference signal in a ratiometric optical sensor to detect oxygen gas (O2). All sensing materials oxygen (O2) gas sensors are embedded in an ethylcellulose (EC) matrix and coated on the surface of the filter paper. All NO and O2 indicator signals were excited using an LED light source with a central wavelength of 380nm and exposed by a NO-O2 gas sensor to observe the intensity of the emission spectrum of the dye sensitive to NO-O2 gas, which was recorded and analyzed with a spectrometer. The emission spectrum results show that the sensitivity of the dual optical NO and O2 sensors is 2.7 and 10.7, respectively. Response and recovery times of the NO-O2 gas sensors were observed, respectively, where the NO gas sensors wer

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