Volatile Organic Compound Vapour Measurements Using a Localised Surface Plasmon Resonance Optical Fibre Sensor Decorated with a Metal-Organic Framework.
Volatile Organic Compound Vapour Measurements Using a Localised Surface Plasmon Resonance Optical Fibre Sensor Decorated with a Metal-Organic Framework.
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用金属-有机框架装饰的局部表面等离子体共振光纤传感器测量挥发性有机化合物蒸气。
DOI：
10.3390/s21041420
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发表时间：
2021-02-18
期刊：
影响因子：
--
通讯作者：
Morgan SP
中科院分区：
文献类型：
--
作者：
He C;Liu L;Korposh S;Correia R;Morgan SP
报道了一种基于TIP的光纤局域表面等离子体共振(LSPR)传感器，用于挥发性有机化合物(VOCs)的传感。该传感器是通过化学吸附过程在多模光纤的尖端涂覆金纳米颗粒(尺寸：40 nm)，并通过逐层工艺与香港科大1号金属有机骨架(MOF)进一步功能化而开发的。报道了涂覆不同周期的MOF(40、80和120)的传感器，这些MOF对应于不同的结晶过程。在40次涂覆周期的传感器中，对所有测试的挥发性有机化合物(丙酮、乙醇和甲醇)都没有可测量的响应。然而，80次和120次镀膜周期的传感器对所有被测试的挥发性有机化合物都显示出显著的共振波长红移(最高可达~9 nm)，这是由于VOC被捕获到HKUST-1薄膜中导致局部折射率增加的结果。随着VOC浓度的增加，传感器逐渐饱和(在丙酮、乙醇和甲醇中分别达到3.41%、4.30%和6.18%)，并在浓度降低时表现出完全可逆的响应。薄膜最厚的传感器比薄膜较薄的传感器显示出更高的灵敏度。该传感器的灵敏度为13.7 nm/%(R2=0.951)，对丙酮的灵敏度为0.005%，对乙醇的灵敏度为15.5 nm/%(R2=0.996)，对甲醇的灵敏度为6.7 nm/%(R2=0.998)，灵敏度为0.011%。丙酮的响应时间和恢复时间分别为9.35和3.85分钟，乙醇为5.35和2.12分钟，甲醇为2.39和1.44分钟。在相对湿度(RH)为50-75%，温度为20-25℃的范围内，120次镀膜MOF的湿度和温度串扰分别为0.5±0.2 nm和0.5±0.1 nm。
A tip-based fibreoptic localised surface plasmon resonance (LSPR) sensor is reported for the sensing of volatile organic compounds (VOCs). The sensor is developed by coating the tip of a multi-mode optical fibre with gold nanoparticles (size: 40 nm) via a chemisorption process and further functionalisation with the HKUST-1 metal–organic framework (MOF) via a layer-by-layer process. Sensors coated with different cycles of MOFs (40, 80 and 120) corresponding to different crystallisation processes are reported. There is no measurable response to all tested volatile organic compounds (acetone, ethanol and methanol) in the sensor with 40 coating cycles. However, sensors with 80 and 120 coating cycles show a significant redshift of resonance wavelength (up to ~9 nm) to all tested volatile organic compounds as a result of an increase in the local refractive index induced by VOC capture into the HKUST-1 thin film. Sensors gradually saturate as VOC concentration increases (up to 3.41%, 4.30% and 6.18% in acetone, ethanol and methanol measurement, respectively) and show a fully reversible response when the concentration decreases. The sensor with the thickest film exhibits slightly higher sensitivity than the sensor with a thinner film. The sensitivity of the 120-cycle-coated MOF sensor is 13.7 nm/% (R2 = 0.951) with a limit of detection (LoD) of 0.005% in the measurement of acetone, 15.5 nm/% (R2 = 0.996) with an LoD of 0.003% in the measurement of ethanol and 6.7 nm/% (R2 = 0.998) with an LoD of 0.011% in the measurement of methanol. The response and recovery times were calculated as 9.35 and 3.85 min for acetone; 5.35 and 2.12 min for ethanol; and 2.39 and 1.44 min for methanol. The humidity and temperature crosstalk of 120-cycle-coated MOF was measured as 0.5 ± 0.2 nm and 0.5 ± 0.1 nm in the humidity range of 50–75% relative humidity (RH) and temperature range of 20–25 °C, respectively.
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DOI：
10.1016/j.jchromb.2004.05.015
发表时间：
2004-09-05
影响因子：
3
作者：
Deng, CH;Zhang, XM;Li, N
通讯作者：
Li, N
DOI：
10.1016/j.jchromb.2004.08.013
发表时间：
2004-10-25
影响因子：
3
作者：
Deng, CH;Zhang, J;Zhang, XM
通讯作者：
Zhang, XM
影响因子：
8.9
作者：
Kim, Ki-Joong;Lu, Ping;Ohodnicki, Paul R.
通讯作者：
Ohodnicki, Paul R.
室温下用氢氧化铜纳米链合成独立式 HKUST-1 膜用于气体分离
影响因子：
4.9
作者：
Mao, Yiyin;Shi, Li;Peng, Xinsheng
通讯作者：
Peng, Xinsheng
影响因子：
4.1
作者：
Farzi-kahkesh, Shaghayegh;Rahmani, Mohammad Bagher;Fattah, Ali
通讯作者：
Fattah, Ali