Abstract—

Adsorption of deoxyribonucleic acid on the surfaces of nanosized titanium and cerium dioxides from aqueous solutions has been studied as depending on pH and adsorbate concentration. The comparison of the data on the adsorption of DNA, an inorganic phosphate, and nucleotides that compose nucleic acid molecules, as well as the states of the surface functional groups of the metal oxides, has revealed that the double-stranded DNA is mainly adsorbed with the participation of the phosphate backbone of its molecule. The heterocyclic bases of nucleotides are not involved in the adsorption process. The approach of DNA to the oxide surface under the action of electrostatic attraction promotes other types of interactions, e.g., dispersion interaction and hydrogen bonding.

中文翻译：

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脱氧核糖核酸在纳米晶钛和二氧化铈表面的吸附

摘要——

研究了水溶液中脱氧核糖核酸在纳米钛和二氧化铈表面上的吸附取决于 pH 值和吸附物浓度。DNA、无机磷酸盐和构成核酸分子的核苷酸的吸附数据以及金属氧化物表面官能团的状态的比较表明，双链 DNA 主要吸附有其分子磷酸骨架的参与。核苷酸的杂环碱基不参与吸附过程。DNA在静电引力作用下接近氧化物表面促进了其他类型的相互作用，例如分散相互作用和氢键。