Oxides such as BaAl₁₂O₁₉ and BaAl₂O₄ in the BaO–Al₂O₃ system demonstrate potential for optical applications due to the abundant tetrahedral and octahedral sites in their structures, as well as their high thermal stability, good chemical stability, high surface area and strong light absorption capacity. Rare earth element doping or transition metal ion doping in oxides in the BaO–Al₂O₃ system contributes to promising photoluminescent, visible color and catalytic properties. In this review, the structures of BaAl₁₂O₁₉, BaAl₂O₄, Ba₃Al₂O₆, Ba₄Al₂O₇, and Ba₇Al₂O₁₀ in the BaO–Al₂O₃ system are introduced. Their applications in phosphors, pigments and catalysts are also summarized herein.

BaO-Al ₂ O _{3体系中的BaAl 12} O ₁₉和BaAl ₂ O ₄等氧化物因其结构中丰富的四面体和八面体位点以及热稳定性高、化学稳定性好、比表面积大，吸光能力强。_{在 BaO–Al 2} O ₃体系的氧化物中掺杂稀土元素或过渡金属离子有助于提高光致发光、可见颜色和催化性能。在这篇综述中，BaAl ₁₂ O ₁₉ , BaAl ₂ O ₄ , Ba的结构介绍了BaO-Al ₂ O ₃体系中的₃ Al ₂ O ₆、Ba ₄ Al ₂ O ₇和Ba ₇ Al ₂ O _{10 。}本文还总结了它们在荧光粉、颜料和催化剂中的应用。