Exploring Dicarboxylic Acid Interactions and Surface Chemistry Through X-ray Photoelectron Spectroscopy
DOI:
https://doi.org/10.63278/mme.vi.1661Keywords:
Dicarboxylic acids; X-ray photoelectron spectroscopy; Surface modification; Surface chemistry; Binding energy shifts.Abstract
Dicarboxylic acids have become key players in designing functional surfaces, offering precise control over interactions in catalysis, materials science, and environmental applications. However, understanding their complex chemical states and surface behavior remains a challenge. Advanced X-ray photoelectron spectroscopy (XPS), known for its ability to identify elements and resolve chemical states, is now essential for studying these systems at the molecular level. This review explores recent advancements in cutting-edge XPS techniques, including synchrotron-based, angle-resolved, and ambient-pressure methods, to analyze surfaces modified with dicarboxylic acids. It highlights important findings on metal-ligand interactions, electrical conductivity, and degradation processes in systems like metal-organic frameworks, hydrogels, composite adsorbents, and single-atom catalysts. The discussion focuses on how the shifts in binding energy, peak analysis, and oxidation state mapping connect to functional properties such as adsorption capacity, catalytic performance, and interfacial role. Additionally, the review addresses ongoing challenges, such as beam-induced damage and reactivity under operational conditions, suggesting the integration of operando and multi-modal methods as a way forward. By emphasizing the role of XPS, this review establishes it as a cornerstone technique for unraveling dicarboxylic acid driven surface chemistry, paving the way for the rational design of sustainable and multifunctional materials.
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Copyright (c) 2025 Ghafoor Ahmad , Md Wazed Hossan Shehab, Hosen Md Sajib , Muhmmad Saleem , Md Atoar Hossan Siblu, Tayyaba Munawar, Abu Musa Sarkar , Hafiz Mahmood Ul Hasan

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