Synthesis and characterization of PtSn/carbon and Pt3Sn/carbon nanocomposites as methanol electrooxidation catalysts.
Synthesis and characterization of PtSn/carbon and Pt3Sn/carbon nanocomposites as methanol electrooxidation catalysts.
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PtSn/碳和 Pt3Sn/碳纳米复合材料作为甲醇电氧化催化剂的合成和表征。
DOI：
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发表时间：
2002
影响因子：
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通讯作者：
C. Lukehart
中科院分区：
文献类型：
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作者：
F. Jones;S. Milne;B. Gurau;E. Smotkin;S. Stock;C. Lukehart
以Pt(SnPh2Cl)(PPh3)2（Ph）或[Pt3[mu-(PPh2)2CH2]3(mu 3- snf3)(mu 3- co)][PF6]作为金属合金的单源前驱体，制备了两种高度分散在碳粉载体上的ptn （niggliite）和Pt3Sn纳米团簇的Pt- sn /vulcan碳纳米复合材料。PtP2或Pt金属也作为次级相存在。平均直径为5- 8nm的双金属Pt-Sn纳米团簇在总金属负载约15.wt %时形成。在直接甲醇燃料电池中对Pt-Sn/C纳米复合材料作为电氧化催化剂的评价表明，燃料电池的性能与传统方法制备的Pt-Sn催化剂相当。
Two Pt-Sn/vulcan carbon nanocomposites containing nanoclusters of PtSn (niggliite) and Pt3Sn highly dispersed on a carbon powder support have been prepared using Pt(SnPh2Cl)(PPh3)2(Ph) or [Pt3[mu-(PPh2)2CH2]3(mu 3-SnF3) (mu 3-CO)][PF6] as single-source precursors of metal alloy. PtP2 or Pt metal is also present as a secondary phase. Bimetallic Pt-Sn nanoclusters with an average diameter of 5-8 nm are formed at a total metal loading of ca. 15 wt%. Evaluation of both Pt-Sn/C nanocomposites as electrooxidation catalysts in a direct methanol fuel cell gives fuel cell performances comparable to that expected for Pt-Sn catalysts prepared by more conventional methods.