Due to the low concentrations of pharmaceuticals and personal care products (PPCPs), traditional water treatment processes are difficult to degrade them effectively. 2,5-bis (tributylstannyl) thiophene-perylene diimide-T@TiO₂ (Bis-PDI-T@TiO₂) composite photocatalyst is firstly prepared by the bisolvent phase transfer method and has a good ability to activate persulfate (PS) under visible light. 5 ppm Carbamazepine (CBZ) (a typical PPCPs) can be completely degraded by 1.0 g/L prepared photocatalyst and 1.0 mM PS within 30 min in the 0.1 wt% Bis-PDI-T@TiO₂ (PT_0.1) system under visible light. Four species of reactive oxidizing species were identified for CBZ degradation, including sulfate radical (SO₄^•−), hydroxyl radical (^•OH), superoxide radical (O₂^•−), and positive hole (h⁺), and all contributed to CBZ degradation. Furthermore, the PT_0.1 photocatalyst exhibits the high stability and recyclability. This study also proposed the reaction mechanism of the Vis/PS/Bis-PDI-T@TiO₂ system and constructed a route of carbamazepine degradation in the coupled system.

由于药品和个人护理产品（PPCP）的浓度低，传统的水处理工艺很难有效地降解它们。首先通过双溶剂相转移法制备了2，5-双（三丁基锡烷基）噻吩-ylene二酰亚胺-T @ TiO ₂（Bis-PDI-T @ TiO ₂）复合光催化剂，在2,5-二（三丁基锡烷基）噻吩-per @ TiO ₂（Bis-PDI-T @ TiO ₂）复合光催化剂上具有良好的活化过硫酸盐（PS）的能力。可见光。在0.1 wt％Bis-PDI-T @ TiO ₂（PT _0.1）系统中，在30分钟内，1.0 g / L制备的光催化剂和1.0 mM PS可以完全降解5 ppm卡马西平（CBZ）（一种典型的PPCP）。。确定了四种可降解CBZ的活性氧化物质，包括硫酸根（SO ₄ ^•-），羟基自由基（^• OH），超氧化物自由基（O ₂ ^•−）和空穴（h ⁺），均导致CBZ降解。此外，PT _0.1光催化剂显示出高稳定性和可回收性。该研究还提出了Vis / PS / Bis-PDI-T @ TiO ₂体系的反应机理，并建立了耦合系统中卡马西平降解的途径。