In this study we propose a new composite material with an enhanced bactericidal action that utilises the complex interactions with bacteria: mechanical interactions of the bacteria with ZnO tetrapod spikes, a photocatalytic process on ZnO nanoparticles, and disinfection by Ag nanoparticles. ZnO and Ag nanoparticles were immobilised on a single-crystalline ZnO tetrapod by the ultrasonic mixing method. The XRD, TEM, SEM and EDS analyses showed the tetrapod-like crystals covered by ZnO and Ag nanoparticles. This complex photocatalytic material, deposited on a grid support, was tested in the UV purifier air system in the AR Diagnostic company. The active microbial monitoring of the indoor air showed a decrease in the concentration of bacteria in the air of the meeting room, with the door open, at 90% for a duration of 30–40 min. A simple variant of the design of an air purifier system, which can be mounted in different types of air channels and compartments, is proposed.

在这项研究中，我们提出了一种新型的具有增强杀菌作用的复合材料，该复合材料利用了与细菌的复杂相互作用：细菌与ZnO四脚钉的机械相互作用，对ZnO纳米粒子的光催化过程以及通过Ag纳米粒子的消毒。通过超声混合法将ZnO和Ag纳米颗粒固定在单晶ZnO四脚架上。XRD，TEM，SEM和EDS分析表明，四脚架状晶体被ZnO和Ag纳米颗粒覆盖。沉积在网格载体上的这种复杂的光催化材料已在AR Diagnostic公司的UV净化器空气系统中进行了测试。对室内空气进行的主动微生物监测显示，会议室的空气在门打开的情况下在30％至40分钟的时间内细菌浓度降低了90％，降低了90％。