The photocatalytic antibacterial activity of a nickel-doped titanium dioxide nanoparticle mesh (Ni–TiO₂ mesh) against E. coli was investigated in chlorinated water under ultrashort-term dual ultraviolet (UV) irradiation. Ni–TiO₂ nanoparticles (NPs) were prepared via Ni doping to TiO₂ NPs and uniformly distributed on the mesh via electrospraying and hot-pressing, of which the morphology and particle size distribution were maintained after immobilization. In the Ni–TiO₂ mesh, the elements, Ti, O, Ni, iron, chromium and silicon were included suggesting multi- and mixed metal oxides. Irradiation distance and lamp cleaning were analyzed as controllable factors to maintain the dual UV intensity. The Ni–TiO₂ mesh showed a significant antibacterial activity even at the smallest mesh size of 0.25 cm² under 5-sec irradiation after the UV intensity adjustment. The results suggest that the improved NP characteristics on a steel mesh substrate, including multi- and mixed metal oxides, can display photocatalytic antibacterial activity against E. coli along with minimization of NP exposure due to NP immobilization. This can be directly extended to other environmental, industrial, and clinical applications as a safe and sustainable photocatalytic antibiotic agent for photocatalytic disinfection.

在超短期双紫外线（UV）照射下，在氯化水中研究了掺镍的二氧化钛纳米颗粒筛网（Ni–TiO ₂筛网）对大肠杆菌的光催化抗菌活性。通过将Ni掺杂到TiO ₂ NPs中制备Ni-TiO ₂纳米颗粒（NPs），并通过电喷涂和热压将其均匀地分布在网格上，固定后其形态和粒径分布得以保持。在Ni–TiO ₂网格中，包括Ti，O，Ni，铁，铬和硅的元素，暗示了多金属氧化物和混合金属氧化物。辐照距离和灯的清洁度是可控制的因素，可以保持双重紫外线强度。镍钛调整紫外线强度后，即使在5秒钟的最小网孔尺寸为0.25 cm ^2的情况下，₂目仍显示出显着的抗菌活性。结果表明，包括多种和混合的金属氧化物在内的钢网基材上改善的NP特性可以显示出对大肠杆菌的光催化抗菌活性，同时由于NP固定而使NP暴露最小化。它可以直接扩展到其他环境，工业和临床应用中，作为用于光催化消毒的安全且可持续的光催化抗生素。