發明
中華民國
101125466
I 468546
奈米級白金之製備方法
國立清華大學
2015/01/11
本發明係揭露一種奈米級白金之製備方法,其使用一種開放式還原系統來完成,其步驟包含設置奈米碳管(載體)、金屬鉑鹽類(前驅物)、還原劑以及去離子水於容置槽中;使容置槽以預定溫度進行加熱,此過程中藉由還原劑將金屬鉑鹽類還原成奈米級白金並沉積於奈米碳管上,同時容置槽中水分因加熱沸騰蒸發而產生蒸氣,此蒸氣經由連接管體將蒸氣導通至冷凝管;以及利用冷凝管使蒸氣遇冷凝結為一液體,最後再經由冷凝管之輸出開口將液體流出收集。本發明藉由上述容置槽中加熱水蒸發過程以達到增加前驅物溶液濃度,加速白金還原反應速率,並且能夠得到粒徑小、高均勻分散性、高電催化晶格面向以及電化學性質佳的奈米級白金。 The invention discloses a preparation method of nano-scale platinum (Pt) using an open-loop reduction system. The preparation method comprises of the following steps: disposing the carbon nanotubes (CNTs) as support, a Pt precursor, a reducing agent, and deionized water in a flask; heating the flask at a specific temperature range so as to reduce nano-scale Pt on the CNTs by the process of water evaporation in the flask. The generated water vapor flows through a condenser to a condenser, in which the water vapor could be condensed into liquid water by a condenser. The liquid outflow can be collected with a beaker placed under the condenser. The present invention can enhance the Pt reduction rate by gradually increasing the concentration of the precursor solution, and may also obtain the nano-scale Pt with smaller particle size, highly-uniform dispersion on CNTs, and high electrocatalytic lattice orientations and superior electrochemical properties.
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智財技轉組
03-5715131-62219
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