Abstract—

Bismuth-containing composite materials (BCMs) are synthesized by the impregnation of matrices of thermally modified high-silica porous glasses (PGs) in aqueous solutions of bismuth nitrate (0.5 M) followed by heat treatment in a wide temperature range from 50 to 875°C. The obtained materials are studied by the infrared spectroscopy method in the frequency range 1100–400 cm^–1 depending on the PG modification (120, 400, and 600°C) and BCM treatment temperatures. At a temperature above 570°C, bands associated with the vibrations of ν_as (Bi–O–Si) and ν_s (Bi–O) bonds in [BiO₃] and [BiO₆] groups and the possible existence of α‑Bi₂O₃ in composites are observed.

中文翻译：

---

基于多孔高硅玻璃的含铋复合材料的红外光谱

摘要—

含铋的复合材料（BCM）是通过在硝酸铋（0.5 M）的水溶液中浸渍热改性的高二氧化硅多孔玻璃（PG）的基质，然后在50至875°的宽温度范围内进行热处理而合成的C。所获得的材料通过红外光谱法在1100-400 cm ^-1的频率范围内进行研究，具体取决于PG的修改（120、400和600°C）和BCM处理温度。在高于570℃的温度，用ν的振动相关联的频带_作为（BIO-Si）和ν_小号在[BIO（生物）键₃ ]和[BIO ₆ ]基团和可能存在的α-在复合物中观察到Bi ₂ O ₃。