The rising water pollution by pesticides, pharmaceuticals and dyes is a major health issue calling for advanced remediation methods such as photocatalysis with titanium dioxide (TiO₂), yet the use of TiO₂ displays issues of aggregation, mass loss, recovery, and reusability. These issues have been recently solved by synthesizing biopolymer-supported photocatalysts using cheap, biodegradable and safe biopolymers such as chitosan, alginate, cellulose, cyclodextrin, guar gum and starch. Here we review biopolymer-supported TiO₂ photocatalysts for the removal of organic compounds, with focus on preparation methods, photo and chemical stability, reusability, and adsorptive capacity. We discuss applications of immobilized photocatalysts at the industrial scale.

农药、药物和染料对水的污染日益严重，这是一个重大的健康问题，需要先进的修复方法，例如二氧化钛 (TiO ₂ ) 的光催化，但 TiO ₂的使用显示出聚集、质量损失、回收和可重复使用性等问题。这些问题最近已通过使用廉价、可生物降解和安全的生物聚合物（如壳聚糖、藻酸盐、纤维素、环糊精、瓜尔胶和淀粉）合成生物聚合物负载的光催化剂来解决。在这里，我们回顾了用于去除有机化合物的生物聚合物负载的 TiO _{2光催化剂，重点关注制备方法、光和化学稳定性、可重复使用性和吸附能力。}我们讨论了固定化光催化剂在工业规模上的应用。