- 學位論文
以熔鹽法製備具磷/螢光碳點及螢光碳點聚酯複合材料作為紡織示蹤劑之應用
Synthesis of Phosphorescent and Fluorescent Carbon Dots through Molten Salt Method and Their Application in Polyester Composites as Textile Tracers
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摘要
本研究以鄰苯二胺(o-Phenylenediamine, o-PD)、間苯二胺(m-Phenylenediamine, m-PD) 、對苯二胺(p-Phenylenediamine, p-PD) 、硝酸鈉(Sodium nitrate, NaNO3)、氯化鉀(Potassium chlorid, KCl)、硼酸(Boric acid, H3BO3)作為前驅物，利用熔鹽法300℃持溫18 hrs，使碳源經過熔融態後，被鹽類包覆住，最終合成出硼摻雜磷光及螢光性質之碳點(Boric -Carbon nano dots Molten salt)簡稱為B-CDsMS，在365 nm的UV光照射下，會有螢光的現象，而關掉365 nm的UV光時就會有磷光的現象，螢光和磷光的顏色為黃綠色(520 nm)。透過螢光光譜儀(FL)、紫外光/可見光光譜儀(UV)、傅立葉轉換紅外光譜儀(FTIR)、X光繞射儀(XRD)、掃描式電子顯微鏡分析(SEM)、倒立顯微鏡(IM)、高解析穿透式電子顯微鏡(HR-TEM)、薄層色譜(TLC)分析其特徵。由TLC分析可以得知B-CDsMS的碳點具有較大的比表面積和較強的極性，HR-TEM分析結果顯B-CDsMS的晶格紋間距(Lattice spacing)為0.33 nm，能夠對應石墨(111)面，倒立顯微鏡影像去看B-CDsMS之螢光/磷光放大後的影像，以及表面形貌，透過掃描電子顯微鏡分析B-CDsMS之整體形貌，用X光繞射儀分析材料之衍射峰位置，透過FTIR分析結果得知B-CDsMS具有碳化過的官能基團，透過螢光光譜儀(FL spectrometer)、紫外光/可見光光譜儀(UV−vis spectrometer)分析B-CDsMS之螢光、磷光、生命週期及吸收光譜圖。以B-CDsMS的磷/螢光特性作為紡織示蹤劑加入聚酯步驟的過程中，進而產生出具有磷/螢光效果的聚酯複合材料，最後將此聚酯複合材料製成紡織衣物。為了可以確認紡 織衣物真的具有示蹤劑的效果，驗證方法是可以透過將聚酯複合材料進行醇解來得到醇解液，對醇解液進行分析來確認紡織示蹤劑的存在。
並列摘要
This study uses o-phenylenediamine(o-PD), m-phenylenediamine(m-PD), p-phenylenediamine(p-PD), sodium nitrate(NaNO₃), potassium chloride(KCl), and boric acid(H₃BO₃) as precursors. The molten salt method was applied at 300℃ for 18 hrs, during which the carbon source entered a molten state and was encapsulated by the salts, resulting in the synthesis of boron-doped carbon dots with phosphorescent and fluorescent properties, abbreviated as B-CDsMS(Boric-Carbon Nano Dots Molten Salt). Under 365 nm UV light irradiation, B-CDsMS exhibits fluorescence, and phosphorescence appears when the UV light is turned off. Both fluorescence and phosphorescence emit a yellow-green color(520 nm).The characteristics of B-CDsMS were analyzed using fluorescence spectrometry(FL), UV-Vis spectrophotometry(UV), Fourier transform infrared spectroscopy(FTIR), X-ray diffraction(XRD), scanning electron microscopy(SEM), inverted microscopy(IM), high-resolution transmission electron microscopy(HR-TEM), and thin-layer chromatography(TLC). TLC analysis indicated that B-CDsMS has a large specific surface area and strong polarity. HR-TEM analysis revealed a lattice spacing of 0.33 nm, which corresponds to the graphite(111) plane. Inverted microscopy was used to observe magnified fluorescence/phosphorescence images and surface morphology, while SEM was employed to examine the overall morphology of B-CDsMS. XRD was used to analyze the diffraction peaks of the material, and FTIR analysis confirmed the presence of carbonized functional groups. Fluorescence and UV-Vis spectrometers were used to analyze the fluorescence, phosphorescence, lifetime, and absorption spectra of B-CDsMS.The phosphorescent and fluorescent properties of B-CDsMS were utilized as a textile tracer in the polyester production process, leading to the creation of polyester composites with phosphorescent and fluorescent effects. These composites were subsequently used to produce textile garments. To confirm that the garments effectively contain the tracer, a verification method involves subjecting the polyester composites to alcoholysis, obtaining an alcoholysis solution, and analyzing it to confirm the presence of the textile tracer.
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