在直接甲醇燃料電池(DMFC)系統中，陽極CO2移除議題近年來已經被廣泛討論於擴散層的設計上。奈米碳管 (CNTs) 被認為是最有機會同時提供大的比表面積，且幫助氣體移除的觸媒載體。在本篇研究中，首先利用電化學配合光學觀測系統，同時紀錄電催化反應進行的即時電極影像和電流隨時間的震盪行為，證實了CNTs作為觸媒載體有較好的氣體移除能力。此CNTs陣列可望取代傳統觸媒載體，應用於DMFC的陽極CO2移除上。
觸媒載體平面矽基材、碳布、碳紙，及直接成長於矽基材與碳布上之不同形貌的CNTs陣列，用來搭配蒸鍍、化學還原法，並進行陽極甲醇半電池測試。循環伏安法(CV)被使用於判斷觸媒活性及有效表面積。定電位法 (I-t) 被用於觀測電催化反應中電流隨時間的震盪趨勢以及電極表面氣泡脫附狀況。
電化學配合光學即時觀測系統被用於本實驗上，藉由施加一定電壓於觸媒層上，配合攝影機捕捉觸媒層表面氣體脫附動態影像，同時紀錄電流隨時間的震盪行為。初期使用蒸鍍白金於不同碳載體上，在H2O2及H2SO4環境中模擬DMFC的陽極甲醇催化反應，發現CNTs載體上有較小且迅速的氣泡脫離現象。
本實驗後期嘗試化學還原法沉積白金觸媒於不同觸媒載體上，透過提高觸媒沉積量，已經可以直接觀測觸媒層CO2的動態移除行為。在甲醇電催化反應中，以CNTs為觸媒載體之電極上，其較小的CO2氣泡脫離行為亦被紀錄下來。

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