Bismuth-bismuth oxychloride-bismuth oxyiodide composite photocatalyst as well as preparation method and application thereof

The invention discloses a bismuth-bismuth oxychloride-bismuth oxyiodide composite photocatalyst as well as a preparation method and application thereof, and belongs to the technical field of photocatalysts. According to the invention, bismuth, bismuth oxychloride and bismuth oxyiodide are compounded at the same time for the first time to prepare a novel composite photocatalyst. The preparation method is simple, and high-temperature and high-pressure reactions such as hydrothermal or calcination are not needed; the prepared product has high photocatalytic performance and has a wide application prospect in the field of pollutant degradation. 本发明公开了一种铋-氯氧化铋-碘氧化铋复合光催化剂及其制备方法和应用，属于光催化剂技术领域。本发明首次将铋、氯氧化铋和碘氧化铋同时复合，制备得到一种新的复合光催化剂。本发明的制备方法简单，不需要水热或煅烧等高温高压反应；制备产物具有高的光催化性能，在污染物降解领域具有广阔的应用前景。