The trends in the value and shift of a water melting point in nanoporous carbons of distinctive surface chemistry were analyzed. The carbons were obtained from sulfur containing polymers and they were additionally exposed to H₂S at high temperature to introduce specific thiophenic/bisulfides of hydrophobic character. The carbons surface chemistry and porosity were evaluated by XPS, potentiometric titration, thermal analysis and adsorption of nitrogen. The behavior of water was tested using dielectric and tensiometric methods. While carbons had similar sizes of pores, their chemistry differed. The initial carbons were more acidic and more hydrophilic than those H₂S treated. The treatment markedly reduced the surface functionalities from the view point of their chemical character and amount on the surface. As expected for carbon materials, the melting point of water decreased compared to that in the bulk owing to stronger fluid-fluid interactions than those of fluid-walls. Nevertheless, that decrease was smaller for carbons of most acidic surface and thus for those attracting water than for carbons of hydrophobic surface. That apparent discrepancy suggested that roughness, seen in the values of the contact angle and wetting energy, affects melting point more than the low affinity of hydrophobic surface groups to attract water.

分析了具有独特表面化学性质的纳米多孔碳中水熔点值和变化的趋势。碳是从含硫聚合物中获得的，并且它们在高温下额外暴露于 H ₂ S 以引入具有疏水特性的特定噻吩/二硫化物。通过 XPS、电位滴定、热分析和氮吸附来评估碳表面化学和孔隙率。使用介电和张力测量方法测试水的行为。虽然碳具有相似大小的孔，但它们的化学性质不同。初始碳比那些 H ₂更具酸性和亲水性S 处理。从表面上的化学特性和数量的角度来看，该处理显着降低了表面官能度。正如对碳材料所预期的那样，由于流体 - 流体相互作用比流体 - 壁更强，水的熔点与本体相比降低。然而，与疏水表面的碳相比，大多数酸性表面的碳和那些吸引水的碳的下降幅度较小。这种明显的差异表明，在接触角和润湿能的值中看到的粗糙度对熔点的影响大于疏水表面基团对水的低亲和力。