The accumulation of intermediates or final products on TiO₂ during photocatalytic volatile organic compounds (VOCs) degradation is typically neglected, despite the fact that it could result in the block of active sites and the deactivation of photocatalysts. Inspired from the natural formation of stalactite (CaCO₃ + H₂O + CO₂ ↔ Ca(HCO₃)₂), we fabricated CaCO₃ loading TiO₂ composites (CCT21) to realize the spontaneously transfer of accumulated final products (CO₂ and H₂O). Efficient and durable performance for gaseous toluene removal has been demonstrated and the cost of photocatalyst is greatly reduced by the comparison of specific activity. The introduction of CaCO₃ induces the interaction between TiO₂ and CaCO₃ to stimulate abundant activated electrons for the improvement on the adsorption and activation of reactants and the transformation of photogenerated carriers, and most importantly, facilitates the transfer of final products to release active sites and thus suppress the deactivation of TiO₂. Furthermore, we develop a facile method to immobilize CCT21 powder on flexible support, which greatly reduces the loss of photocatalysts and correspondingly enables the practical application of TiO₂-based products. Therefore, this work presents a novel nature-inspired strategy to address the challenge of deactivation, and advances the development of photocatalytic technology for environmental remediation.

在光催化挥发性有机化合物 (VOC) 降解过程中，中间体或最终产物在 TiO ₂上的积累通常被忽略，尽管它可能导致活性位点的阻塞和光催化剂的失活。受钟乳石 (CaCO ₃  + H ₂ O + CO ₂  ↔ Ca(HCO ₃ ) ₂ ) 自然形成的启发，我们制备了 CaCO ₃负载 TiO ₂复合材料 (CCT21)，以实现累积最终产物（CO ₂和氢₂奥）。已经证明了气态甲苯去除的高效和持久性能，并且通过比活性的比较大大降低了光催化剂的成本。CaCO _{3的引入诱导了TiO 2}和CaCO ₃之间的相互作用，激发出丰富的活化电子，以改善反应物的吸附和活化以及光生载流子的转化，最重要的是，促进最终产物的转移以释放活性位点从而抑制TiO ₂的失活。此外，我们开发了一种简便的方法将 CCT21 粉末固定在柔性载体上，大大减少了光催化剂的损失，相应地使 TiO 的实际应用成为可能₂型产品。因此，这项工作提出了一种新颖的受自然启发的策略来应对失活的挑战，并推动了用于环境修复的光催化技术的发展。