g-C3N4/PEDOT:PSS 導電高分子複合纖維之製備與應用

Preparation and Application of g-C3N4 / PEDOT: PSS Conductive Polymer Composite Fiber

劉鈺玲(Yu-Ling Liu)

指導教授 ： 楊大毅

中原大學/工學院/化學工程研究所/碩士(2018年)

https://doi.org/10.6840/cycu201800473

摘要

隨著科技的進步，工業化的汙染和能源危機越來越嚴重，對於環境的議題也逐漸受到重視，由於光觸媒具有光學和電學性質、低成本、高光催化活性、化學穩定性以及無毒性，故已被科學家廣泛的研究。
本研究製備類石墨氮化碳(g-C3N4)與聚環氧乙烷(PEO)/聚二氧乙基噻吩：聚苯乙烯磺酸 (PEDOT:PSS)的複合纖維材料，用於光觸媒反應。通過簡便的方法以尿素作為前驅物經高溫鍛燒製備g-C3N4，隨後通過乙醇胺(MEA)溶液進行官能化處理來製備胺官能化的g-C3N4，並且以靜電紡絲技術製備出PEO/PEDOT:PSS複合纖維之後進一步做光催化反應。
實驗結果顯示胺官能化的g-C3N4僅與g-C3N4的表面連接，不會影響原始形貌以及破壞初始結構，而靜電紡絲技術可藉由控制環境濕度、工作電壓、流速，以及使用PEO調整溶液黏度等方法，以獲得最佳化的紡絲條件。另外，我們改善PEO/PEDOT:PSS奈米纖維對濕的不穩定性，將PSS與PEO在高溫下進行縮合反應，形成交聯。最後在光催化檢測時，發現MEA透過在油浴鍋加熱時間的不同會影響g-C3N4的附著量，進而影響到光催化的效果。

關鍵字

類石墨氮化碳(g-C3N4) ； PEDOT:PSS ； 光觸媒 ； 靜電紡絲

並列摘要

With the advancement of science and technology, industrial pollution and energy crisis have become more and more severe, and environmental issues have gradually received attention. Photocatalysts with advantages of tunable optical and electrical properties, low cost, high photocatalytic activity, chemical stability and non-toxicity are widely studied by scientists.
In this study, composite fiber materials composed of g-C3N4 and PEO/PEDOT:PSS were prepared for photocatalytic reaction. g-C3N4 was prepared by high temperature calcination using urea as a precursor, followed by functionalization of ethanolamine (MEA) solution to obtain amine-functionalized g-C3N4, and PEO/PEDOT:PSS fibers were prepared by electrospinning technology. The composite fiber is further subjected to a photocatalytic reaction.
The experimental results show that the amine-functionalized g-C3N4 solely attaches to the surface of g-C3N4 without affecting the original morphology and damaging the initial g-C3N4 structure. Moreover the optimal spinning conditions for electrospinning PEO/PEDOT:PSS fibers can be obtained by controlling the ambient humidity, operating voltage, flow rate, and viscosity of PEO. In addition, we improved the moisture instability of PEO/PEDOT:PSS nanofibers by utilizing the crosslinking reaction of PSS and PEO at high temperature. Finally, in the photocatalytic test, we found that the heating time of the MEA would affect the adsorption of g-C3N4, which would affect the performance of composite fibers in photocatalytic test.

並列關鍵字

g-C3N4 ； PEDOT:PSS ； Photocatalyst ； Electrospinning technology

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