najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2024-15-4-487-497najo-41Research ArticleCHEMISTRY AND MATERIALS SCIENCEХИМИЯ И НАУКА О МАТЕРИАЛАХolloidal chemical properties of the sol V2O5 · nH2O.Коллоидно-химические свойства золя V2O5 ∙ nH2Ohttps://orcid.org/0009-0000-6975-2380ЛвинХ.LwinH.

Hein Myat LwinDepartment of Colloidal ChemistryMiusskaya square, 9, Moscow, 125047

heinmyatlwin2468@gmail.comhttps://orcid.org/0000-0001-8661-3235ЯроваяО. В.YarovayaO. V.

Oksana V. Yarovaya - Department of Colloidal ChemistryMiusskaya square, 9, Moscow, 125047

iarovaia.o.v@muctr.ruD. I. Mendeleev University of Chemical Technology of RussiаRussian FederationD. I. Mendeleev University of Chemical Technology of RussiaRussian Federation202431052025154487497Copyright © Lwin H., Yarovaya O.V., 20252025Лвин Х., Яровая О.В.Lwin H., Yarovaya O.V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/41

The colloidal properties of the lyophilic dispersion system V2O5 nH2O sol studied in this work was obtained by the thermolysis of V2O5 powder with hydrogen peroxide. The dispersion phase exists in the form of nanorods. The optimal mole ratio of V2O5 and H2O2 for synthesizing the sol is 1:30, and the possible concentration of V2O5 in the entire colloidal system ranges between 0.3 to 1.6 mass percent. The existence of nanoparticles in this colloidal system and the pH range that maintains the stability of the sol conform to the phase diagram of vanadium (V) in an aqueous medium. The absolute value of the zeta potential of the sol increases when the initial concentration of the sol during synthesis increases and the ionic strength of the dispersion medium decreases. Potential curves of pair interaction between nanoparticles were also constructed according to the DLVO theory.

В данной работе были изучены коллоидные свойства лиофильной дисперсной системы V2O5 ∙ nH2O золя, полученной путем термолиза порошка V2O5 пероксидом водорода. Дисперсионная фаза существует в виде нанолистов. Оптимальное мольное соотношение V2O5 и H2O2 для синтеза золя составляет [1]:[30], а возможная концентрация V2O5 во всей коллоидной системе составляет от 0,3 до 1,6 мас.%. Существование наночастиц в этой дисперсной системе и диапазон pH, обеспечивающий стабильность золя, соответствуют фазовой диаграмме ванадия (V) в водной среде. Абсолютная величина дзета-потенциала частиц увеличивается с увеличением исходной концентрации при синтезе золя и уменьшением ионной силы дисперсионной среды. Фактор формы частицы, определяемый формулой Эйнштейна, имеет значение 9,608. По теории ДЛФО также были построены потенциальные кривые парного взаимодействия между наночастицами.

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The authors declare that there are no conflicts of interest present.