混合基质3D打印可见光催化系统对病毒气溶胶的去除

利用3D打印灵活可控的特点和复合材料混合打印的优势，将可见光响应的ZnO/g-C₃N₄催化剂掺入ABS塑料，利用3D打印制成催化剂均匀稳定分布的光催化系统，使用流体动力学仿真模拟对反应器结构进行优化设计，用于处理相对密闭的室内空间中的病毒气溶胶.结果表明，病毒气溶胶比细菌气溶胶具有更强的抗逆性，添加螺旋导流板可以显著提升反应器传质性能并有效改善系统光催化效果，以提高对病毒气溶胶的去除率.以商业LED灯为光源的螺旋式反应器对高浓度病毒气溶胶（MS2、PhiX174噬菌体）和细菌气溶胶（大肠杆菌）具有高效去除效果，在3.75min停留时间可以实现对气溶胶的完全去除.

Visible light photocatalytic system made by polymer matrix composites 3D printing for virus aerosol removal

Take the advantage of design flexibility of polymer matrix composites 3D printing, the visible light-responsive ZnO/g-C₃N₄ catalyst was incorporated into ABS plastic to form a photocatalytic system with uniform and stable catalyst distribution. The reactor structure was optimized using Computational Fluid Dynamics simulation and the photocatalytic reactor was used to treat virus aerosols in relatively closed indoor areas. Results showed that viruses were more resistant than bacteria, and the addition of spiral baffles can increase the removal rate of virus aerosols, due to the significant improvement in the mass transfer performance of photocatalytic system. The spiral photocatalytic system can efficiently remove high-concentration virus (MS2, PhiX174phage) and bacterial (E. coli) aerosols with the help of commercial LED lights. Furthermore, photocatalytic system can remove virus aerosols and bacterial aerosols at a residence time of 3.75min.