Adhesion Energies of Liquid Hydrocarbon Solvents onto Pt(111), MgO(100), Graphene, and TiO 2 (110) from Temperature-Programmed Desorption Energies
Adhesion Energies of Liquid Hydrocarbon Solvents onto Pt(111), MgO(100), Graphene, and TiO 2 (110) from Temperature-Programmed Desorption Energies
复制标题
液态烃溶剂在 Pt(111)、MgO(100)、石墨烯和 TiO 2 (110) 上的粘附能（来自程序升温解吸能）
DOI：
10.1021/acs.jpcc.1c08949
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Campbell, Charles T.
中科院分区：
文献类型：
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作者：
Rumptz, John R.;Campbell, Charles T.
液体溶剂和清洁固体表面之间的粘附能的知识允许直接估计由于该液体溶剂相对于气相吸附能的存在而导致的反应物分子在该表面上的吸附能的降低。这种估计反过来可以用来帮助液相催化剂，电催化剂和化学分离的设计。我们在这里报告的粘附能量为13个液体固体系统，涉及烷烃和芳烃薄膜清洁单晶表面估计通过使用程序升温脱附（TPD）测量其低温吸附能与覆盖通过散装多层覆盖。由于TPD是测量吸附能的最常见的实验技术，这里采用的方法为许多其他液体/固体粘附能的估计开辟了新的机会。正构烷烃在MgO（100）、石墨烯（Pt（111））和Pt（111）上的吸附能表明，正构烷烃的单位面积吸附能几乎与链长无关。基于己烷的粘附能，我们表明粘附能在不同材料上显著变化，按MgO（100）<石墨烯<TiO 2（110）<Pt（111）的顺序增加。
Knowledge of the adhesion energy between a liquid solvent and a clean solid surface allows for a straightforward estimation of the decrease in the adsorption energy of reactant molecules on that surface due to the presence of that liquid solvent relative to gas-phase adsorption energies. Such estimations in turn can be used to aid the design of liquid-phase catalysts, electrocatalysts, and chemical separations. We report here adhesion energies for 13 liquid-on-solid systems involving alkane and aromatic hydrocarbon films on clean single-crystal surfaces estimated by using temperature-programmed desorption (TPD) measurements of their low-temperature adsorption energies versus coverage up through bulklike multilayer coverages. Because TPD is the most common experimental technique for measuring adsorption energies, the method employed here opens new opportunities for many other estimates of liquid/solid adhesion energies. The adhesion energies of variousn-alkanes on MgO(100), graphene (on Pt(111)), and Pt(111) show that the adhesion energy (per unit area) ofn-alkanes is nearly independent of chain length. Based on the adhesion energies of hexanes, we show that the adhesion energy changes significantly on different materials, increasing in the order of MgO(100) < graphene < TiO2(110) ≈ Pt(111).