The organic solar cell active layer, well known for excellent visible light response capability, is regarded as a potential candidate for photocatalytic degradation of organic wastewater. However, the poor dispersibility in water due to its hydrophobicity property severely limited the degrading efficiency. In this work, a novel composite photocatalyst PM6:IDT8CN-M/CK2 with a broad visible absorption spectrum and non-toxicity was first synthesized through the intercalation compounding method. A good dispersibility of PM6:IDT8CN-M in wastewater was achieved with the help of rich interlamellar porosity and good hydrophilicity of calcined kaolin. This composite photocatalyst was successfully applied to the SBX photocatalytic degradation in mineral processing wastewater, and the SBX pollutants can be completely degraded within 10 min under the condition of visible light irradiation. Compared with other reported photocatalysts, the photocatalytic degradation efficiency of SBX was dramatically improved by at least seven times. Moreover, PM6:IDT8CN-M/CK2 has remarkable stability, sustaining degradation efficiencies of over 90 % in 60 cycles. Notably, the organic solar cell active layer in PM6:IDT8CN-M/CK2 can achieve carrier rapid separation and transport, enhancing the generation of active oxides (∙O, and ∙OH, etc.). At the same time, the large surface area of PM6:IDT8CN-M/CK2 provides a suitable environment for the oxidation reaction of active radicals with SBX to achieve this efficient photocatalytic degradation. Overall, this work not only extends the application scope of organic solar cell active layer, but also develops a high-efficiency SBX removal technique for the treatment of mineral processing wastewater.

中文翻译：

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高效粘土矿物基有机光催化剂光降解选矿废水中的丁基黄原酸盐


有机太阳能电池活性层以其优异的可见光响应能力而闻名，被认为是光催化降解有机废水的潜在候选者。然而，由于其疏水性，在水中的分散性较差，严重限制了其降解效率。本工作首先通过插层复合法合成了一种具有宽可见吸收光谱且无毒的新型复合光催化剂PM6:IDT8CN-M/CK2。借助煅烧高岭土丰富的层间孔隙率和良好的亲水性，PM6:IDT8CN-M在废水中具有良好的分散性。该复合光催化剂成功应用于选矿废水中SBX光催化降解，在可见光照射条件下10分钟内SBX污染物即可完全降解。与其他报道的光催化剂相比，SBX的光催化降解效率显着提高了至少七倍。此外，PM6:IDT8CN-M/CK2 具有卓越的稳定性，在 60 个循环中保持超过 90% 的降解效率。值得注意的是，PM6:IDT8CN-M/CK2中的有机太阳能电池活性层可以实现载流子的快速分离和传输，增强活性氧化物（∙O和∙OH等）的生成。同时，PM6:IDT8CN-M/CK2的大表面积为活性自由基与SBX的氧化反应提供了合适的环境，以实现这种高效的光催化降解。总体而言，这项工作不仅扩展了有机太阳能电池活性层的应用范围，而且开发了一种用于处理选矿废水的高效SBX去除技术。