CAJ | 학술논문

报道了由β-环糊精诱导的三氧化钼(MoO3)水溶性增加及其与β-环糊精浓度的相关性,认为MoO3水溶性的增加是由于β-环糊精的加入导致了MoO3在水中的沉淀-溶解平衡向溶解方向移动.几个独立的实验证明了由β-环糊精和钼酸根离子(MoO42-)组成的灰蓝色产物的形成.结果表明:(1) X射线光电子能谱显示,与MoO3相比,灰蓝色产物中钼的3d5/2和3d3/2电子轨道的结合能有明显的降低;(2)在灰蓝色产物中出现了213 nm处的强吸收带(Mo=O)和775 nm处的宽吸收峰(Mo―O);(3)由于MoO42-的影响,β-环糊精的质子有很明显的低场漂移.总之,我们的工作不仅明确地揭示了β-环糊精和MoO42-之间的分子-离子相互作用,同时揭示了这种相互作用在改善MoO3物理性质上的潜在应用价值.
보도료유β-배호정유도적삼양화목(MoO3)수용성증가급기여β-배호정농도적상관성,인위MoO3수용성적증가시유우β-배호정적가입도치료MoO3재수중적침정-용해평형향용해방향이동.궤개독립적실험증명료유β-배호정화목산근리자(MoO42-)조성적회람색산물적형성.결과표명:(1) X사선광전자능보현시,여MoO3상비,회람색산물중목적3d5/2화3d3/2전자궤도적결합능유명현적강저;(2)재회람색산물중출현료213 nm처적강흡수대(Mo=O)화775 nm처적관흡수봉(Mo―O);(3)유우MoO42-적영향,β-배호정적질자유흔명현적저장표이.총지,아문적공작불부명학지게시료β-배호정화MoO42-지간적분자-리자상호작용,동시게시료저충상호작용재개선MoO3물이성질상적잠재응용개치.
Increased water solubility of molybdenum trioxide (MoO3) induced byβ-cyclodextrin (CD), with solubility dependent on β-CD concentration is reported. The dynamic equilibrium established between MoO3 precipitation and dissolution shifted towards dissolution upon the addition of aqueousβ-CD, to form a bluish-grey product. This was confirmed to be ofβ-CD and MoO42-by:(1) X-ray photoelectron spectroscopy showed decreased Mo 3d5/2 and 3d3/2 binding energies of the product compared with those of MoO3;(2) a strong band at 213 nm and new broad peak near 775 nm of the product were attributed to Mo=O and Mo―O bond absorption; (3) a downfield shift of β-CD protons due to the effect of MoO42- ions. An interaction betweenβ-CD and MoO42-has been revealed and hints at the possibility of exploiting it for improving MoO3 physical properties.