The precise decoration of Pt nanoparticles with Fe oxide by atomic layer deposition for the selective hydrogenation of cinnamaldehyde
The precise decoration of Pt nanoparticles with Fe oxide by atomic layer deposition for the selective hydrogenation of cinnamaldehyde
复制标题
原子层沉积铁氧化物对 Pt 纳米颗粒的精确修饰用于肉桂醛的选择性加氢
DOI：
10.1016/j.apcatb.2017.06.087
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发表时间：
2017-12-05
影响因子：
22.1
通讯作者：
Qin, Yong
中科院分区：
文献类型：
--
作者：
Hu, Qingmin;Wang, Sen;Qin, Yong
由于贵金属和金属氧化物之间的相互作用，用金属氧化物修饰贵金属基催化剂可以提高其对肉桂醛选择性加氢生成肉桂醇（COL）的催化性能。在这里，我们使用原子层沉积（ALD）用 Fe 氧化物精确装饰 Pt 纳米粒子。经过 30 次装饰循环后，COL 的选择性从裸 Pt 催化剂的 45% 增加到 Pt 基催化剂的 84%。通过 ALD 法与 Fe 氧化物反应。一系列表征表明，通过 ALD 方法用 Fe 氧化物精确封闭低配位 Pt 位点，生成 Pt-FeOx 界面周边位点，并且 Pt 纳米颗粒和 Fe 氧化物之间的相互作用导致对 COL 的高选择性。这种通过 ALD 进行的精确修饰和界面周边位点的形成为先进催化剂的设计提供了一条有前途的途径。 (C) 2017 Elsevier B.V. 保留所有权利。
The decoration of noble metal-based catalysts with metal oxides can improve their catalytic performance for the selective hydrogenation of cinnamaldehyde to cinnamyl alcohol (COL) due to the interaction between the noble metal and metal oxides. Here, we used atomic layer deposition (ALD) to decorate Pt nanoparticles precisely with Fe oxides. The selectivity to COL increased from 45% for the bare Pt catalyst to 84% for the Pt-based catalyst after 30 cycles of decoration. with Fe oxide by ALD. A series of characterizations demonstrated that the precise blocking of low coordinated Pt sites with Fe oxide by ALD, generating Pt-FeOx interfacial perimeter sites, and the interaction between the Pt nanoparticles and Fe oxide led to high selectivity to COL. This precise decoration and the formation of interfacial perimeter sites by ALD provide a promising route for the design of advanced catalysts. (C) 2017 Elsevier B.V. All rights reserved.