CO oxidation on non-alloyed Pt and Ru electrocatalysts prepared by the polygonal barrel-sputtering method

CO oxidation on non-alloyed Pt and Ru electrocatalysts prepared by the polygonal barrel-sputtering method
复制标题

多边形桶溅射法制备非合金Pt和Ru电催化剂的CO氧化

DOI:
10.1016/j.electacta.2009.04.009
复制
发表时间:
2009
影响因子:
6.6
通讯作者:
Takayuki Abe
Takayuki Abe
中科院分区:
材料科学2区
文献类型:
--
作者:
Mitsuhiro Inoue;Toshiharu Nishimura;Satoshi Akamaru;Akira Taguchi;Minoru Umeda;Takayuki Abe

文献摘要

参考文献

被引文献

相似文献

采用多边形磁控溅射法制备了非合金Pt和Ru电催化剂,并研究了其对CO的氧化性能。样品通过在室温下分别溅射Pt和Ru来制备。通过对在SiO2玻璃板上制备的样品的X射线衍射(XRD)测量,发现溅射金属是非合金的。随后,非合金化的Pt和Ru电催化剂的制备多边形桶溅射法使用碳粉作为载体。这些样品的XRD图谱显示出单个且非常宽的峰,支持非合金化Pt和Ru的假设。没有单独的Ru反射是可见的,这可以归因于Ru颗粒尺寸小于4nm,如通过透射电子显微镜(TEM)获得的。采用CO溶出伏安法对非合金Pt和Ru电催化剂上的CO氧化进行了评价。该测量揭示了CO氧化的较低峰电位根据Pt含量和溅射顺序而变化。此外,据推测,非合金化的Pt和Ru电催化剂的CO氧化反应位点具有有限的面积,包括Pt和Ru颗粒之间的直接接触位点。
The CO oxidation on non-alloyed Pt and Ru electrocatalysts prepared by the polygonal barrel-sputtering method was investigated. Samples were prepared by sputtering Pt and Ru separately at room temperature. From the X-ray diffraction (XRD) measurement of the sample prepared on a SiO2glass plate, it was found that the sputtered metals are non-alloyed. Subsequently, the non-alloyed Pt and Ru electrocatalysts were prepared by the polygonal barrel-sputtering method using carbon powder as a support. The XRD patterns of these samples showed a single and very broad peak supporting the hypothesis of the non-alloyed Pt and Ru. No separate Ru reflections were visible, which could be attributed to Ru particle sizes smaller than 4nm, as obtained by transmission electron microscopy (TEM). CO oxidation on the non-alloyed Pt and Ru electrocatalysts were evaluated by CO stripping voltammetry. This measurement revealed that the lower peak potential of CO oxidation varies, depending on the Pt content and the sputtering order. In addition, it was assumed that the CO oxidation reaction site for non-alloyed Pt and Ru electrocatalyst has a limited area including direct contact sites between the Pt and Ru particles.
DOI: 10.1021/la7015929
发表时间: 2008-01
期刊: Langmuir : the ACS journal of surfaces and colloids
影响因子: --
作者:
Christina Roth;N. Benker;Ralf Theissmann;Richard J. Nichols;D. Schiffrin
通讯作者: Christina Roth;N. Benker;Ralf Theissmann;Richard J. Nichols;D. Schiffrin
DOI: 10.1016/j.vacuum.2008.04.052
发表时间: 2008
期刊: Vacuum
影响因子: 4
作者:
S. Akamaru;Hironari Yamamoto;T. Abe
通讯作者: T. Abe
DOI: --
发表时间: 2006
期刊: Thin Solid Films 513
影响因子: --
作者:
M.Nakayama;S.Goto;Y.Uchimoto;M.Wakihara;Y.Kitajima;T.Miyanaga;I.Watanabe;Yoshiharu Uchimoto 他;M.Ishikawa;M.Ishikawa;M.Morita;石川 正司;I.Murayama;M.Ishikawa;石川 正司;M.Ishikawa;I.Murayama;M.Ishikawa;M.Ishikawa;石川 正司;I.Murayama;M.Ishikawa;石川 正司;N.Yoshimoto;M.Morita;N.Yoshimoto;M.Morita;N.Yoshimoto;M.Morita;石川 正司;M.Ishikawa;石川 正司;石川 正司;M.Ishikawa;石川 正司;Satoshi Akamaru et al.;N.Kumada et al.;Satoshi Akamaru et al.
通讯作者: Satoshi Akamaru et al.
反应物传输和(表面)合金形成对碳负载 PtRu 聚合物电解质燃料电池催化剂 CO 耐受性的作用
DOI: 10.1002/fuce.200500246
发表时间: 2006
期刊: Fuel Cells
影响因子: 2.8
作者:
J. Kaiser;L. Colmenares;Z. Jusys;R. Mörtel;H. Bönneman;G. Köhl;H. Modrow;J. Hormes;R. Behm
通讯作者: R. Behm
裸电极、Pt 改性电极和 Ru(0001) 单晶电极上的一氧化碳氧化
DOI: --
发表时间: 2002
期刊:
影响因子: --
作者:
S. Brankovic;N. Marinkovic;Jun Wang;R. Adzic
通讯作者: R. Adzic