Combining high-efficient photocatalysts and well-designed photocatalytic reactors is a promising approach to realize the practical photocatalytic degradation of the volatile organic chemicals (VOCs). In this work, the Pd-Ag/AgBr/TiO₂ hierarchical nanostructure was synthesized via a hydrothermal approach followed by the photo-deposition, ion-exchange, and the photo-reduction processes. The bimetallic Pd-Ag co-catalyst on AgBr/TiO₂ composites presented enhanced photocatalytic activity in the photo-degradation of propylene, which was varied with Pd content. The high photocatalytic activity of the hybrid photocatalyst is derived from the high visible-light photocatalytic activity of AgBr and the improved charge separation of the Pd-Ag/AgBr/TiO₂ hierarchical nanostructure. Finally, a self-container hydrothermal method was proposed and prepared the Pd-Ag enhanced AgBr/TiO₂ hierarchical nanostructured photocatalytic hybrid capillary tubes. A well-designed continuous photocatalytic reactor was integrated by fixing the glass capillary tubes onto a pair of circled glass tubes with a Xe arc lamp in the center of the device. The reactor showed a high degradation efficiency of gaseous propylene over a large range of flow rates. Therefore, it possesses a high potential for the practical application to deal with the VOCs.

结合高效的光催化剂和精心设计的光催化反应器是实现挥发性有机化学物质（VOC）实际光催化降解的一种有前途的方法。在这项工作中，Pd-Ag / AgBr / TiO ₂分层纳米结构是通过水热方法合成的，然后进行光沉积，离子交换和光还原过程。AgBr / TiO ₂复合材料上的双金属Pd-Ag助催化剂在丙烯的光降解中表现出增强的光催化活性，丙烯随Pd含量的变化而变化。杂化光催化剂的高光催化活性源自AgBr的高可见光光催化活性和Pd-Ag / AgBr / TiO ₂的改进的电荷分离分层的纳米结构。最后，提出了一种自容水热法，并制备了Pd-Ag增强的AgBr / TiO ₂分级纳米结构光催化杂化毛细管。设计良好的连续光催化反应器是通过将玻璃毛细管固定到一对圆形玻璃管上而实现的，该装置带有Xe弧光灯，位于设备中心。该反应器在较大的流速范围内显示出高的气态丙烯降解效率。因此，在处理挥发性有机化合物方面具有很高的应用潜力。