基于四苯基卟啉锌敏化剂的光电气体检测研究
Exploring Optical and Electrical Gas Detection Based on Zinc-Tetraphenylporphyrin Sensitizer
摘要：
我们利用四苯基卟啉锌（ZnTPP）作为敏化剂，开发了光波导（OWG）、紫外-可见分光光度法（UV-vis）和电操作气体传感器。引人注目的是，ZnTPP薄膜/K+交换玻璃光波导（OWG）传感元件在1 ppm NO2气体注入时表现出109.6的优异的信噪比（SNR），其分别是在氧化铝陶瓷管上制备的UV-vis（在438 nm波长处的吸光度）和ZnTPP电传感元件的29.5倍和3.8倍。傅立叶红外光谱（FT-IR）和紫外-可见光谱的进一步结果证实了NO2气体在ZnTPP上的强化学吸附。因此，我们的研究突出了选择合适的检测技术与ZnTPP的分析物传感。
英文摘要：
We developed optical waveguide (OWG), ultraviolet-visible spectrophotometry (UV-vis), and electrically operated gas sensors by utilizing zinc-tetraphenylporphyrin (ZnTPP) as sensitizer. Strikingly, ZnTPP thin-film/K+-exchanged glass optical waveguide (OWG) sensing element exhibits a superior signal-to-noise ratio (SNR) of 109.6 upon 1 ppm NO2 gas injection, which is 29.5 and 3.8 times larger than that of UV-vis (absorbance at wavelength of 438 nm) and ZnTPP electrical sensing elements prepared on an alumina ceramic tube, respectively. Further results on Fourier Infrared spectra (FT-IR) and UV-vis spectra, confirm a strong chemical adsorption of NO2 gas on ZnTPP. Therefore, our studies highlight the selection of suitable detection technique for analyte sensing with ZnTPP.
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