纳米团簇
材料科学
八面体
催化作用
纳米晶
纳米颗粒
形态学(生物学)
结晶学
基质(水族馆)
化学工程
六方晶系
面(心理学)
金属
锰
纳米技术
晶体结构
化学
冶金
工程类
地质学
五大性格特征
遗传学
生物化学
人格
心理学
海洋学
生物
社会心理学
作者
Zhao Yang Fei,Bo Sun,Liang Zhao,Wei Ji,Chak Tong Au
标识
DOI:10.1002/chem.201204112
摘要
Gold nanoparticles (3-4 nm) were deposited on Mn3O4 nanocrystallites with three distinct morphologies (cubic, hexagonal, and octahedral). The resulting structures were characterized, and their activities for benzene combustion were evaluated. The dominant exposed facets for the three kinds of Mn3O4 polyhedrons show the activity order: (103)≈(200)>(101). A similar activity order was derived for the interfaces between the Au and the Mn3O4 facet: Au/(200)≈Au/(103)>Au/(101). The metal-support interactions between the Au nanoclusters and specific facets of the Mn3O4 polyhedrons lead to a unique interfacial synergism in which the electronic modification of the Au nanoparticles and the morphology of the Mn3O4 substrate have a joint effect that is responsible for a significant enhancement in the catalytic activity of the Au/Mn3O4 system.
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