New-fashioned bismuth silver oxide (BSO) perovskite nano-catalysts have been synthesized by a simple and easy co-deposition method, with silver nitrate and bismuth acid sodium as raw materials. Photocatalytic degradation characteristics of tetracycline under UV irradiation and structural transformation on BSO have been studied systematically. The degradation conditions were optimized by single factor experiment and orthogonal experiment. The results show that the highest degradation rate can reach 95.79% and the first-order reaction rate coefficient k = 0.0361 min^− 1. During the recycle photocatalytic process, the material structural transformation (BSO is gradually transformed into highly active Bi₂O₂CO₃ after multiple degradation) of the catalyst has been systematically studied.

中文翻译：

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四环素的光催化降解特性及氧化铋钙钛矿型纳米催化剂的结构转变

以硝酸银和铋酸钠为原料，通过简单易行的共沉积方法合成了新型的氧化铋银（BSO）钙钛矿纳米催化剂。系统研究了紫外辐射下四环素的光催化降解特性及在BSO上的结构转变。通过单因素实验和正交实验对降解条件进行了优化。结果表明，最高降解率可达95.79％，一级反应速率系数k  = 0.0361 min ^-1。在循环光催化过程中，材料结构转变（BSO逐渐转变为高活性Bi ₂ O ₂ CO ₃ 多次降解后）的催化剂已得到系统研究。