Based on controllable morphology of BiOI, three-dimension (3D) porous BiOI/Ti₃C₂ nanocomposite can be prepared via one-pot method in solvothermal condition. The BiOI/Ti₃C₂ nanocomposite achieved a mesoporous nanostructure coating with a pore distribution of 2.5–20 nm. The numerous mesoporous of BiOI/Ti₃C₂ nanocomposite provided the abundant active sites as a coating photocatalyst. The photoelectric and photocatalytic performances of BiOI/Ti₃C₂ nanocomposite have also been discussed and studied systematically. In solvothermal condition, the synthesized BiOI as coating was dispersed on the Ti₃C₂ MXene surface to form the porous nanostructure, which achieved a larger specific surface area. Furthermore, the BiOI/Ti₃C₂ nanocomposite respectively displayed the stronger photocatalytic ability in photodegradation Rhodamine B (RhB) and photoreduction Cr (VI) than 2D BiOI. For 3D porous BiOI/Ti₃C₂ nanocomposite, the BiOI/Ti₃C₂ nanocomposite with 40 wt% Ti₃C₂ MXene displayed the optimum photocatalytic ability. And the superior photocatalytic ability of BiOI/Ti₃C₂ nanocomposite was mainly due to the uniform mesoporous coating, high conductivity and narrow band gap. Therefore, Ti₃C₂ MXene as BiOI co-catalyst had a good prospect for application in water remediation.

基于BiOI的可控形态，可以在溶剂热条件下通过一锅法制备三维（3D）多孔BiOI / Ti ₃ C ₂纳米复合材料。BiOI / Ti ₃ C ₂纳米复合材料获得了介孔纳米结构涂层，其孔分布为2.5–20 nm。BiOI / Ti ₃ C ₂纳米复合材料的众多介孔提供了丰富的活性位点，作为涂层光催化剂。还对BiOI / Ti ₃ C ₂纳米复合材料的光电性能和光催化性能进行了系统的讨论和研究。在溶剂热条件下，将合成的BiOI作为涂层分散在Ti ₃ C _2上MXene表面形成多孔纳米结构，从而实现了较大的比表面积。此外，BiOI / Ti ₃ C ₂纳米复合材料在光降解罗丹明B（RhB）和光还原Cr（VI）方面比2D BiOI表现出更强的光催化能力。对于3D多孔BiOI / Ti ₃ C ₂纳米复合材料，具有40 wt％Ti ₃ C ₂ MXene的BiOI / Ti ₃ C ₂纳米复合材料表现出最佳的光催化能力。BiOI / Ti ₃ C ₂纳米复合材料的优异光催化能力主要是由于均匀的介孔涂层，高电导率和窄的带隙。因此，钛₃ C ₂ MXene作为BiOI助催化剂在水修复中具有良好的应用前景。