奈米金-氧化矽多層結構應用於有機氣體光學探針之研製

dc.contributor呂家榮zh_TW
dc.contributorLu, Chia-Jungen_US
dc.contributor.author李冠儀zh_TW
dc.contributor.authorLe, Guan-Yien_US
dc.date.accessioned2019-09-04T09:07:51Z
dc.date.available2018-07-01
dc.date.available2019-09-04T09:07:51Z
dc.date.issued2016
dc.description.abstract本研究發展新型光學探頭式探針感測器,在探針基材上修飾多層奈米金粒子及銀鏡,利用局部表面電漿共振 (Localized Surface Plasmon Resonance;LSPR) 原理測量揮發性有機氣體 (Volatile Organic Compounds;VOCs)。首先以3-氨基丙基三乙氧基矽烷(3-Aminopropyl triethoxysilane;APTMS) 當作玻璃和奈米金粒子的交聯劑,再於玻璃片上自組裝奈米金粒子,最後以四乙氧基矽烷 (Tetraethyl orthosilicate;TEOS) 水解後的產物二氧化矽 (Silicon dioxide;TiO2) 在奈米金粒子上形成薄膜當作隔板,按此順序層層疊加,隨奈米金粒子之層數達五層,其吸收度是單層奈米金粒子的 11倍,降低玻片型感測器所需的片數。本研究使用玻片型感測器量測八種有機氣體,結果展現良好的靈敏度、再現性、線性關係 (R2>0.99) 且偵測下限 (Limit of detection;LOD) 落在24~392 ppm。不同於玻片型感測器,探頭式探針感測器使用Y型光纖連接光源及 光譜儀。實驗結果顯示:探針長度越長、外徑越大光反射效果越好。長度5 cm、外徑2 mm之探頭式探針感測器可達單片五層奈米金粒子 5000~6000 ppm的訊號強度,展現探頭式探針感測器良好的靈敏度。zh_TW
dc.description.abstractThis research reports a novel optical probe as a detector for detection of volatile organic compounds (VOCs) based on localized surface plasmon resonance (LSPR) principle using gold and silica (TiO2) nanoparticles composite. The surface of probe soaks in 3-Aminopropyl triethoxysilane (APTMS) solution as crosslinking agent to bond the glass substrate between gold nanoparticles. The gold nanoparticles will coated on glass substrate by self-assemble process and using silica hydrolysis of tetraethyl orthosilicate (TEOS) as bulkhead. Finally, the glass substrate coated on fifth layer of gold nanoparticles with this order. The absorbance of fifth layer gold nanoparticles is 11 times of the single layer gold nanoparticles that the amount of fifth layer gold nanoparticles on slip. This is much less than single layer gold nanoparticles for VOCs detection. We measure eight kinds of VOCs, including m-xylene, butyl acetate, butanol, anisole, 1,4 –dioxane, chlorobenzene, cyclohexanone and octane. The experiments result shows high sensitivity, reproducibility, linearity (R2 >0.99) and the limit of detection (LOD) is about 24~392 ppm. Apartfrom the slip sensor, the probe sensor using Y type optical fiber to connect light source with spectrometer. According to the experiment results, the longer and fatter the higher sensitivity of detecting m-xylene. Signal intensity of length 5 cm and the outer diameter of 2 mm probe is the same as the single slip of fifth layer gold nanoparticles 5000~6000 ppm. This result exhibits probe sensor has good sensitivity in the detection of VOCs.en_US
dc.description.sponsorship化學系zh_TW
dc.identifierG060342071S
dc.identifier.urihttp://etds.lib.ntnu.edu.tw/cgi-bin/gs32/gsweb.cgi?o=dstdcdr&s=id=%22G060342071S%22.&%22.id.&
dc.identifier.urihttp://rportal.lib.ntnu.edu.tw:80/handle/20.500.12235/100077
dc.language中文
dc.subject表面電漿共振zh_TW
dc.subject揮發性有機氣體zh_TW
dc.subject二氧化矽zh_TW
dc.subject多層奈米金粒子zh_TW
dc.subject光學感測器zh_TW
dc.subject探針zh_TW
dc.subjectGold nanoparticlesen_US
dc.subjectSilicaen_US
dc.subjectLocalized Surface Plasmon Resonanceen_US
dc.title奈米金-氧化矽多層結構應用於有機氣體光學探針之研製zh_TW
dc.titleAn Optical Volatile Organic Compounds Probe Using nano-Au/ nano-SiO2 Composite Mulitilayeren_US

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