An APXPS endstation for gas-solid and liquid-solid interface studies at SSRF
An APXPS endstation for gas-solid and liquid-solid interface studies at SSRF
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用于 SSRF 气固和液固界面研究的 AXPPS 终端站
DOI：
10.1007/s41365-019-0608-0
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发表时间：
2019-05-01
影响因子：
2.8
通讯作者：
Liu, Zhi
中科院分区：
文献类型：
--
作者：
Cai, Jun;Dong, Qiao;Liu, Zhi
在过去的几十年里，各种表面分析技术在界面现象的研究中得到了广泛的应用，包括基础表面科学、催化、环境科学和能源材料。在明亮的同步加速器源的帮助下，这些技术中的许多已经进一步发展成为同步加速器用户设施中的新型原位/操作工具，提供了对气-固和液-固界面的原位化学/电化学过程的分子水平的理解。为专用波束线设计合适的终端站是有效利用这些技术以满足各种用户请求的挑战之一。许多因素，包括压差、光子源、样品和分析仪的几何形状和能量，都需要针对感兴趣的系统进行优化。本文讨论了上海同步辐射装置中用于环境压力X射线光电子能谱研究的光束线02B的新终端的设计和性能。该系统配备了新开发的高透过率HiPP-3分析器，被证明能够有效地从超高真空到20mbar的环境压力收集高达1500 eV的光电子。HiPP-3分析仪的光谱显微镜模式还能够以2.8+/-0.3lm的一维分辨率探测光电子的空间分布。此外，通过我们的讨论，我们还将强调允许研究气-固界面和液-固界面现象的系统的设计策略。
In the past few decades, various surface analysis techniques find wide applications in studies of interfacial phenomena ranging from fundamental surface science, catalysis, environmental science and energy materials. With the help of bright synchrotron sources, many of these techniques have been further advanced into novel in-situ/operando tools at synchrotron user facilities, providing molecular level understanding of chemical/electrochemical processes in-situ at gas-solid and liquid-solid interfaces. Designing a proper endstation for a dedicated beamline is one of the challenges in utilizing these techniques efficiently for a variety of user's requests. Many factors, including pressure differential, geometry and energy of the photon source, sample and analyzer, need to be optimized for the system of interest. In this paper, we discuss the design and performance of a new endstation at beamline 02B at the Shanghai Synchrotron Radiation Facility for ambient pressure X-ray photoelectron spectroscopy studies. This system, equipped with the newly developed high-transmission HiPP-3 analyzer, is demonstrated to be capable of efficiently collecting photoelectrons up to 1500 eV from ultrahigh vacuum to ambient pressure of 20 mbar. The spectromicroscopy mode of HiPP-3 analyzer also enables detection of photoelectron spatial distribution with resolution of 2.8 +/- 0.3 lm in one dimension. In addition, the designing strategies of systems that allow investigations in phenomena at gas-solid interface and liquid-solid interface will be highlighted through our discussion.