現行廢水處理技術多使用如TiO2和ZnO等需要紫外光來驅動(λ ≤ 365 nm)的半導體光催化材料來降解污染物，但紫外光處理成本高且耗能，對環境相對不友善，因此多數研究轉往發掘能取代傳統TiO2之光催化材料，近年來新興奈米碳材富勒烯(fullerene，含C60、C70、C76)的發現引起了研究熱潮，由於富勒烯材料在可見光(λ ≥ 400 nm)範圍即有光活性，因此可在太陽光下作用，有效利用太陽光譜中佔 > 80 - 85%的可見光能量，減少電能使用，是對環境友善的光催化材料。
本研究目的為探究nC60及相關富勒烯碳材在可見光下之光活性，利用高強度超音波震盪法製備高濃度nC60膠體水溶液作為光觸媒，在可見光下進行有機污染物之降解，並探討其可能反應機制，同時也對反應參數如光觸媒及染料污染物劑量、pH值變化、抗氧化劑之添加影響進行討論，而本研究首次針對不同富勒烯材料進行光活性比較，將nC60、nC70及富勒醇(polyhydroxylated fullerene i.e., fullerol)置於同條件下，探討造成其降解效果歧異之原因。
本研究選擇染劑作為目標有機污染物，以玫瑰紅B、甲基橙及亞甲藍分別代表兩性離子型、陰離子型及陽離子型三種不同類型的污染物，藉由染劑的脫色反應程度作為材料光催化活性之評估依據。結果顯示以本研究方法製備之穩定高濃度nC60膠體溶液，成功地在可見光下降解有機污染物—染劑，比較不同富勒烯材料，fullerol與nC60對RhB有較佳的光催化降解效率，而MO則是nC60與nC70，總體而言不論哪一種染劑nC60皆具有優秀的光催化降解效果。

In recent years, the studies of nanocarbon materials become more popular, especially fullerene C60. As one of the earliest discovered nanomaterials, the basic properties of C60 have been studied completely. Compare to traditional photocatalysts, such as TiO2, CdS, fullerenes have photoactivity under visible light (λ ≥ 400 nm), which means fullerenes can utilize solar light efficiently. In this study, we used aqueous fullerene clusters nC60, nC70 and fullerol as photocatalysts and studied the photoactivity of fullerene materials under visible light. The aqueous fullerene clusters were produced by high intensity sonication method and was used to catalyze the degradation of organic pollutants. The organic pollutants here we used were dyes, rhodamine B (RhB), methyl orange (MO) and methylene blue (MB). Here, we first compared with the photoactivity of different fullerene materials under same conditions and figured out the probable reaction pathways. The result indicated that the nC60 we produced successfully degraded the organic pollutants, dyes. Compared nC60 with nC70 and fullerol, nC60 performed more excellent ability of photosensitized degradation in all system.

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