Low temperature CO oxidation over unsupported nanoporous gold
Low temperature CO oxidation over unsupported nanoporous gold
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DOI：
10.1021/ja0675503
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发表时间：
2007-01-10
影响因子：
15
通讯作者：
Ding, Yi
中科院分区：
文献类型：
--
作者：
Xu, Caixia;Su, Jixin;Ding, Yi
负载型Au纳米团簇因其独特的催化性能而广为人知。通过脱合金化制备的纳米多孔金代表了一类新型的无载体催化剂，在CO氧化等重要反应中具有非凡的活性。虽然纳米孔Au表面可能含有一些氧化物，但我们的结果表明，在该催化反应中起主要作用的是金属Au。此外，该材料具有良好的低温催化稳定性和极强的抗CO能力。
Supported Au nanoclusters are well-known for their unusual properties in catalysis. We describe here that nanostructured porous Au made via dealloying represents a new class of unsupported catalysts with extraordinary activities in important reactions such as CO oxidation. Although nanoporous Au may contain some oxides on the surface, our results demonstrate that it is metallic Au that plays the main role in this catalytic reaction. Furthermore, this material has good low-temperature catalytic stability and is extremely CO tolerant.