Bimetallic platinum-cobalt (Pt–Co) nanostructure catalysts represent superior catalytic performances for oxygen reduction reaction (ORR). In a variety of Pt–Co catalyst structures, atomically...

2018年5月15日 · Here, we report first results of preparing Pt/HOPG model catalysts, their characterization by X-ray photoelectron spectroscopy (XPS) and scanning tunneling microscopy (STM) in UHV, and their catalytic testing for ethylene hydrogenation in a flow microreactor at atmospheric pressure.

As observed by comparing the binding energies in Fig. 3a and b, we observe that the binding energies of Pt 4 f XPS peaks for PtCo/C before refluxing have a slight shift to higher values in ...

2018年1月15日 · Oxidized Pt nanoparticles have core (Pt metal) – shell (Pt oxide) structure. XP Spectroscopy is used to compare the states of the supported platinum particles in the samples of the Pt/Sibunit catalyst and the Pt/HOPG model system after treating in NO 2 at room temperature and pressure of 3 × 10 −6 mbar.

2023年3月27日 · The electronic structure and chemical environment of PtC 60, particularly at the Pt/C 60 interface, were investigated by X-ray photoelectron spectroscopy (XPS) and X-ray absorption spectroscopy...

2001年3月1日 · The present X-ray photoelectron spectroscopic (XPS) study on carbon-supported Pt, Pt–Co and Pt–Co–Cr electrocatalysts suggests the presence of a relatively lower Pt-oxide content on the alloys.

Also, the X-ray photoelectron spectroscopy (XPS) indicated the highest peak ratio of metallic Pt from PtPd/CB-CNT that was related to its high catalytic active surfaces.

铂 •过渡金属 铂元素 XPS 主峰： Pt4f 干扰峰： Al2p 常见化学状态的结合能：

2021年11月2日 · 利用微量Co掺杂的沸石咪唑框架（ZIF-8）衍生的富含缺陷的氮掺杂碳材料作为载体，结合温和易放大的室温电化学还原方法，可制备出Pt，Co均以单原子形式存在的Pt 1 /Co 1 NC催化剂，具有超高的HER活性：0.5M H 2 SO 4 中过电位仅有4.15mV，20mV处的TOF为32.86s -1，20mV处的质量活性为32.4 A mg −1Pt，高达商业Pt/C的54倍。 氢能是下一代环境友好能源最有希望的候选者。 实现绿色氢能的关键是使用由风能和太阳能产生的清洁电力电解水 …

2023年4月17日 · 近日，新加坡国立大学汪磊（Lei Wang）、Sergey M. Kozlov、浙江大学孙文平（Wenping Sun）等报道将Pt簇锚定在二维富勒烯纳米片上（PtC60），显著的提高Pt的碱性HER催化本征活性，比商业Pt/C催化剂提高了12倍。 相关的研究成果以“Diversity of platinum-sites at platinum/fullerene interface accelerates alkaline hydrogen evolution”为题发表在Nature Communications上。 1、作者开发了一种简便的方法来合成二维C60纳米片，并将Pt锚定在二 …