Abstract

Bismuth-containing composite materials based on high-silica porous glasses (PGs) of various types are prepared. Their structural parameters and electrokinetic potential in 10^–2 М KNO₃ solutions in the pH range 1.5–8.5 are studied. The results are compared with the analogous properties of matrices not modified with bismuth oxide, as well as the pH dependence of the zeta-potential for SiO₂ particles and the sols of synthesized and industrial bismuth(III) oxide. It is determined that modification of larger-pore particles not containing secondary silica with bismuth(III) oxide results in the deviation of the form of the ζ–рН dependences from those intrinsic for high-silica PG and SiO₂ particles.

中文翻译：

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基于多孔玻璃的含铋材料的电动特性

摘要

制备了基于各种类型的高二氧化硅多孔玻璃（PG）的含铋复合材料。它们的结构参数，并在10级电动电位^-2 МKNO _3级在pH范围1.5-8.5的解决方案进行了研究。将结果与未用氧化铋改性的基体的类似性质，以及SiO ₂颗粒和合成和工业化氧化铋（III）溶胶的ζ电位的pH依赖性进行了比较。可以确定的是，用氧化铋（III）对不含次级二氧化硅的大孔颗粒进行改性，会导致ζ–рН依赖性形式与高硅PG和SiO ₂固有颗粒形式的偏差。