<p>Photocatalytic textile based on TiO₂ has great potential in organic pollutant degradation. The key to its preparation lies in the binding of TiO₂ nanoparticles (NPs) to textile via crosslinking agent. However, in order to reach adequate coating fastness, the commonly used crosslinking agents generally suffer too much usage, which greatly reduces the photocatalytic efficiency of TiO₂. To address this problem, a novel crosslinker containing a p-phenylenediamine center and four long silanol groups is developed in this work. It not only firmly binds TiO₂ NPs to textiles with small amount, but also improves photocatalytic performance of the composites that benefit from its redox-reversible feature. Photocatalytic textiles with different weight ratios of crosslinker to TiO₂ are prepared by the&#xa0;spray coating method. The sample with the ratio of 1:4 shows the best photocatalytic performance and simultaneously preserves good coating fastness. The degradation efficiency for methylene blue remains over 90% after four cycles of consecutive experiments. Compared with the composites prepared using other crosslinking agents, the textile in this work shows both higher photocatalytic performance and better binding strength.</p> Graphical abstract <p></p>