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首页> 外文会议>PowerMEMS 2013 >High Performance Nanocatalysts Supported on Micro/Nano Carbon Structures Using Ethanol Immersion Pretreatment for Micro DMFCs
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High Performance Nanocatalysts Supported on Micro/Nano Carbon Structures Using Ethanol Immersion Pretreatment for Micro DMFCs

机译：高性能纳米催化剂支持微/纳米碳结构，使用乙醇浸渍预处理进行微DMFCS

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In this paper, highly dense platinum (Pt) nanocatalysts were successfully deposited on the hydrophilically-treated nano/micro carbon supports with an ethanol (EtOH) immersion pretreatment and an acidic treatment for the performance improvement of methanol oxidation reaction (MOR). In order to thoroughly immerse the three-dimensional, interwoven structures of the carbon cloth fibers with a 6 M sulfuric acid surface modification, which increasing more oxygen-containing functional groups on the surfaces of the carbon supports, the EtOH immersion pretreatment of the carbon supports was utilized prior to the sulfuric acid treatment. Subsequently, Pt catalysts were reduced on the modified carbon supports by a homemade open-loop reduction system (OLRS) [1] For comparisons, carbon cloth (CC) and carbon nanotube on CC (CNT/CC) supports were employed with and without EtOH immersion pretreatments before Pt catalyst reduction. In the cyclic voltammetry (CV) curves, the electrosorption charges of hydrogen ion (QH) and the peak current density (IP) of the fabricated Pt/CC and Pt/CNT/CC electrodes with the EtOH immersion pretreatments can efficiently be enhanced due to more active Pt sites for electrocatalytic reactions.
机译：本文在具有乙醇（EtOH）浸渍预处理的亲水处理的纳米/微碳载体上成功地沉积高致密的铂（Pt）纳米催化剂，并进行酸性处理，以进行甲醇氧化反应的性能（Mor）。为了使碳布纤维的三维，交织结构彻底浸入6米硫酸表面改性，这增加了碳载体表面上的含氧常态基团，碳支撑件的EtOH浸渍预处理在硫酸处理之前使用。随后，通过自制开环减少系统（OLRS）[1]在改性碳载体上降低Pt催化剂，用于比较，Cc（CNT / CNT / CC）支撑件上的碳布（CC）和碳纳米管用且没有EtOH在Pt催化剂降低之前浸渍预处理。在循环伏安法（CV）曲线中，由于诸如用于电催化反应的更多活性PT网站。

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