Colloidal chemical properties of the sol V2O5 2 O 5 <middle dot> nH2O 2 O

被引：0

作者：

Lwin, Hein Myat ^{[1
]}

Yarovaya, Oksana V. ^{[1
]}

机构：

[1] D I Mendeleev Univ Chem Technol Russia, Moscow, Russia

来源：

NANOSYSTEMS-PHYSICS CHEMISTRY MATHEMATICS | 2024年 / 15卷 / 04期

关键词：

nH2O; 2; O; thermolysis; nanorods; lyophilic colloidal system; stability; DLVO theory; VANADIUM; OXIDE;

D O I：

10.17586/2220-8054-2024-15-4-487-497

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The colloidal properties of the lyophilic dispersion system V2O5 2 O 5 <middle dot> nH2O 2 O sol studied in this work was obtained by the thermolysis of V2O5 2 O 5 powder with hydrogen peroxide. The dispersion phase exists in the form of nanorods. The optimal mole ratio of V2O5 2 O 5 and H2O2 2 O 2 for synthesizing the sol is 1:30, and the possible concentration of V2O5 2 O 5 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.

引用

页码：487 / 497

页数：11

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