許多擔載白金觸媒於碳載體上的方法已被提出，如含浸法、蒸鍍法、電鍍法、微波輔助多元醇法、超臨界法、微乳化法等，但這些製程通常過程繁瑣或需使用有害物質，亦或是設備昂貴，因此在本研究提出使用設備簡單製程方便之水熱法做為擔載觸媒之方法。本研究以乙二醇做為還原劑，用水熱法將白金觸媒擔載於碳黑、奈米碳纖、奈米碳管與氧化石墨烯四種性質各異之碳載體，並可得到單一粒徑且分佈均勻之Pt/C複合材料，並顯示觸媒粒子易於在載體缺陷位置被析出。合成之Pt/C以X光繞射儀鑑定其結晶相，掃描式電子顯微鏡、穿透式電子顯微鏡觀察其觸媒之粒徑與分佈，由化學電子分析儀鑑定觸媒表面之價態，最後以循環伏安法量測觸媒之活性表面積與甲醇催化效能。結果顯示水熱法以乙二醇做為還原劑之鉑/奈米碳管與鉑/石墨烯複合材料，可得到高於Johnson Matthey商用觸媒之甲醇氧化電流。

this paper, we report the dposition of Pt nanoparticles on different types of carbons including carbon black, carbon nanofiber, carbon nanotube and graphene oxide, by a convenient hydrothermal method. The sizes, size distribution and dispersion of the resulting Pt nanoparticles can be effectively controlled using this method with ethylene glycol, and the results shows Pt nanoparticles precipitating easily at the defects sites of the carbon support. The obtained Pt/C nanocomposites were characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffractometry, and X-ray photoelectron spectroscopy. After Pt/C nanocomposites were fabricated, the different properties were examined for the methanol electro-oxidation using cyclic voltammetry. The result shows that the homemade CNT-EG and GO-MWEG catalyst has higher methanol oxidation activity than commercial Pt/C catalyst.

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