Probing water adsorption characteristics of Pt step-edge decorated Cu(211) surface

IF 2.1 4区化学 Q3 CHEMISTRY, PHYSICAL Surface Science Pub Date : 2024-06-19 DOI:10.1016/j.susc.2024.122537

Amin Mohammadpour , Sarp Kaya

引用次数: 0

Abstract

The surface structure and atomic composition can affect the adsorption characteristics of water on metal surfaces. In this study, we investigated the adsorption of water on Cu(211) stepped surfaces decorated with Pt by a combination of infrared reflection absorption spectroscopy (IRRAS) and temperature-programmed desorption (TPD) studies. We have observed that step sites of Cu can increase the strength of the binding of water molecules to the surface and facilitate water partial dissociation and the formation of OH groups on the surface. Step decoration by Pt can change the water adsorption characteristics and eliminate the water dissociation. Water adsorbs molecularly on the fully Pt-decorated steps of the Cu(211) surface. Molecular water and OH adsorbed on Cu(211), which can make a chain structure, are disrupted with Pt atoms.

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探究铂阶梯边装饰铜（211）表面的水吸附特性

表面结构和原子成分会影响水在金属表面的吸附特性。在这项研究中，我们结合红外反射吸收光谱（IRRAS）和温度编程解吸（TPD）研究，考察了水在铂装饰的阶梯状 Cu(211) 表面上的吸附情况。我们观察到，Cu 的阶梯位点可以增加水分子与表面的结合强度，促进水的部分解离和表面 OH 基团的形成。铂的阶梯装饰可以改变水的吸附特性，消除水的解离。水以分子方式吸附在 Cu（211）表面完全铂装饰的台阶上。吸附在 Cu(211) 上的分子水和 OH 可形成链状结构，但被铂原子破坏。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Surface Science 化学-物理：凝聚态物理

CiteScore

3.30

自引率

5.30%

发文量

137

审稿时长

25 days

期刊介绍： Surface Science is devoted to elucidating the fundamental aspects of chemistry and physics occurring at a wide range of surfaces and interfaces and to disseminating this knowledge fast. The journal welcomes a broad spectrum of topics, including but not limited to: • model systems (e.g. in Ultra High Vacuum) under well-controlled reactive conditions • nanoscale science and engineering, including manipulation of matter at the atomic/molecular scale and assembly phenomena • reactivity of surfaces as related to various applied areas including heterogeneous catalysis, chemistry at electrified interfaces, and semiconductors functionalization • phenomena at interfaces relevant to energy storage and conversion, and fuels production and utilization • surface reactivity for environmental protection and pollution remediation • interactions at surfaces of soft matter, including polymers and biomaterials. Both experimental and theoretical work, including modeling, is within the scope of the journal. Work published in Surface Science reaches a wide readership, from chemistry and physics to biology and materials science and engineering, providing an excellent forum for cross-fertilization of ideas and broad dissemination of scientific discoveries.