Covalent triazine frameworks (CTFs) have been recently employed for visible light-driven photocatalysis due to their unique optical and electronic properties. However, the usually highly hydrophobic nature of CTFs, which originates from their overall aromatic backbone, leads to limitations of CTFs for applications in aqueous media. In this study, we aim to extend the range of the application media of CTFs and design hybrid material of a CTF and mesoporous silica (SBA-15) for efficient photocatalysis in aqueous medium. A thiophene-containing CTF was directly synthesized in mesopores of SBA-15. Due to the high surface area and the added hydrophilic properties by silica, the hybrid material demonstrated excellent adsorption of organic molecules in water. This leads not only to high photocatalytic performance of the hybrid material for the degradation of organic dyes in water, but also for efficient photocatalysis in solvent-free and solid state. Furthermore, the reusability, stability and easy recovery of the hybrid material offers promising metal-free heterogeneous photocatalyst for broader applications in different reaction media.

由于其独特的光学和电子特性，共价三嗪骨架（CTF）最近已用于可见光驱动的光催化。但是，CTF通常具有高度疏水性，这是由于它们的整体芳香族主链导致了CTF在水性介质中应用的局限性。在这项研究中，我们旨在扩展CTF的应用介质范围，并设计CTF和中孔二氧化硅（SBA-15）的混合材料，以在水性介质中进行有效的光催化。在SBA-15的中孔中直接合成了含噻吩的CTF。由于二氧化硅的高表面积和增加的亲水性，这种杂化材料表现出优异的有机分子在水中的吸附能力。这不仅导致杂化材料对水中有机染料的降解具有很高的光催化性能，而且还导致了无溶剂和固态下的有效光催化。此外，杂化材料的可重用性，稳定性和易于回收性提供了前景广阔的无金属多相光催化剂，可在不同的反应介质中进行更广泛的应用。