Aqueous treatment of single-walled carbon nanotubes for preparation of Pt–Fe core–shell alloy using galvanic exchange reaction: Selective catalytic activity towards oxygen reduction over methanol oxidation
Aqueous treatment of single-walled carbon nanotubes for preparation of Pt–Fe core–shell alloy using galvanic exchange reaction: Selective catalytic activity towards oxygen reduction over methanol oxidation
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DOI：
10.1016/j.elecom.2009.01.016
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发表时间：
2009-03
影响因子：
5.4
通讯作者：
K. Shimizu;I. Cheng;C. Wai
中科院分区：
文献类型：
--
作者：
K. Shimizu;I. Cheng;C. Wai
我们用原电池交换反应合成了一种新的、经济有效的单壁碳纳米管负载的铂-铁核壳合金催化剂(Pt-Fe/SWNT)。铂-铁/单壁碳纳米管表现出更大的铂活性表面积(150m~2/g-铂)，远大于商用催化剂(54m~2/g-铂)。此外，铂-铁/碳纳米管对氧还原反应(ORR)的催化活性也提高了四倍。该催化剂在ORR中也表现出了对甲醇的耐受性。
We have demonstrated a new, cost effective synthesis of single-walled carbon nanotube supported Pt–Fe core–shell alloy catalyst (Pt–Fe/SWNT) for the direct methanol fuel cell using galvanic exchange reaction. The Pt–Fe/SWNTs have shown much larger Pt active surface area (150m2/g-Pt) than the commercial catalyst (54m2/g-Pt). Furthermore, four-fold enhancement of catalytic activity of the Pt–Fe/SWNTs for oxygen reduction reaction (ORR) has been observed. This catalyst has also demonstrated its tolerance to methanol in ORR.