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首页> 外文期刊>Nanotechnology >A facile one-pot self-assembly approach to incorporate SnO_x nanoparticles in ordered mesoporous carbon with soft templating for fuel cells
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A facile one-pot self-assembly approach to incorporate SnO_x nanoparticles in ordered mesoporous carbon with soft templating for fuel cells

机译：一种简便的一锅式自组装方法，可将SnO_x纳米粒子掺入有序介孔碳中，并具有用于燃料电池的软模板

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摘要

Unique SnO_x (x D1, 2)/ordered mesoporous carbon nanocomposites (denoted as SnO_x/OMC) are firstly synthesized through a ‘one-pot’ synthesis together with the soft template self-assembly approach. The obtained SnO_x/OMC nanocomposites with various SnOx contents exhibit uniform pore sizes between 3.9 and 4.2 nm, high specific surface areas between 497 and 595 m~2 g~(-1), and high pore volumes between 0.39 and 0.48 cm~3 g~(-1). With loading of Pt, Pt–SnO_x/OMC with relatively low SnO_x content exhibits superior electrocatalytic performance, long-term durability, and resistance to CO poisoning for methanol oxidation, as compared to Pt/OMC, PtRu/C and Pt–SnO_x /C, which may be attributed not only to the synergetic effect of embedded SnO_x, but also to the highly ordered mesostructure with high specific surface areas and large pore volumes affording plenty of surface area for support of Pt nanoparticles. This work supplies an efficient way to synthesize novel ordered mesoporous carbon self-supported metallic oxide as catalyst support and its further potential application to reduce the cost of catalysts in direct methanol fuel cells.
机译：独特的SnO_x（x D1，2）/有序介孔碳纳米复合材料（表示为SnO_x / OMC）首先通过“一锅法”合成与软模板自组装方法合成。所获得的具有不同SnOx含量的SnO_x / OMC纳米复合材料具有3.9至4.2 nm的均匀孔径，497至595 m〜2 g〜（-1）的高比表面积和0.39至0.48 cm〜3 g的高孔隙率〜（-1）。与Pt / OMC，PtRu / C和Pt-SnO_x / C相比，随着Pt的添加，SnO_x含量相对较低的Pt-SnO_x / OMC表现出优异的电催化性能，长期耐用性和抗CO中毒的甲醇氧化性。 ，这不仅可以归因于嵌入的SnO_x的协同作用，而且还可以归因于具有高比表面积和大孔体积的高度有序的介观结构，从而为支撑Pt纳米颗粒提供了足够的表面积。这项工作提供了一种有效的方法来合成新型有序介孔碳自支撑金属氧化物作为催化剂载体，并为减少直接甲醇燃料电池中催化剂的成本提供了进一步的潜在应用。

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