当前位置：
X-MOL 学术
›
J. Am. Chem. Soc.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Finite Size Effects in Submonolayer Catalysts Investigated by CO Electrosorption on PtsML/Pd(100)
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2017-09-21 00:00:00 , DOI: 10.1021/jacs.7b08740 Qiuyi Yuan 1 , Hieu A. Doan 1 , Lars C. Grabow 1 , Stanko R. Brankovic 1
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2017-09-21 00:00:00 , DOI: 10.1021/jacs.7b08740 Qiuyi Yuan 1 , Hieu A. Doan 1 , Lars C. Grabow 1 , Stanko R. Brankovic 1
Affiliation
|
A combination of scanning tunneling microscopy, subtractively normalized interfacial Fourier transform infrared spectroscopy (SNIFTIRS), and density functional theory (DFT) is used to quantify the local strain in 2D Pt clusters on the 100 facet of Pd and its effect on CO chemisorption. Good agreement between SNIFTIRS experiments and DFT simulations provide strong evidence that, in the absence of coherent strain between Pt and Pd, finite size effects introduce local compressive strain, which alters the chemisorption properties of the surface. Though this effect has been widely neglected in prior studies, our results suggest that accurate control over cluster sizes in submonolayer catalyst systems can be an effective approach to fine-tune their catalytic properties.
中文翻译：
CO对Pt sML / Pd（100）的电吸附研究的亚单层催化剂的有限尺寸效应
结合使用扫描隧道显微镜，减法归一化傅里叶变换红外光谱（SNIFTIRS）和密度泛函理论（DFT）来量化Pd 100面上2D Pt簇中的局部应变及其对CO化学吸附的影响。SNIFTIRS实验与DFT模拟之间的良好一致性提供了有力的证据，即在Pt和Pd之间不存在相干应变的情况下，有限尺寸效应会引入局部压缩应变，从而改变了表面的化学吸附特性。尽管这种作用在先前的研究中已被广泛忽略，但我们的结果表明，对亚单层催化剂体系中簇尺寸的精确控制可能是微调其催化性能的有效方法。
更新日期：2017-09-21
中文翻译：
CO对Pt sML / Pd（100）的电吸附研究的亚单层催化剂的有限尺寸效应
结合使用扫描隧道显微镜，减法归一化傅里叶变换红外光谱（SNIFTIRS）和密度泛函理论（DFT）来量化Pd 100面上2D Pt簇中的局部应变及其对CO化学吸附的影响。SNIFTIRS实验与DFT模拟之间的良好一致性提供了有力的证据，即在Pt和Pd之间不存在相干应变的情况下，有限尺寸效应会引入局部压缩应变，从而改变了表面的化学吸附特性。尽管这种作用在先前的研究中已被广泛忽略，但我们的结果表明，对亚单层催化剂体系中簇尺寸的精确控制可能是微调其催化性能的有效方法。
京公网安备 11010802027423号