A self-cleaning surface based on UV-activatable, AgCl micropumps for bacterial killing and removal

Peng Liu^‡a, Kecheng Quan^‡abc, Miaomiao Liu ^a, Huaguang Wang ^a, Henny C. van der Mei^*b, Henk J. Busscher^*b and Zexin Zhang ^*a（张泽新）

^a College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China

^b University of Groningen and University Medical Center Groningen, Department of Biomedical Engineering, 9713 AV Groningen, The Netherlands  

^c School of Materials Science and Engineering, Peking University, Beijing 100871, P. R. China

^‡ These authors contributed equally to this work

Chem. Commun., 2022, 58, 7030--7033

We report a self-cleaning, bacterial killing surface by immobilization of AgCl microparticles on a surface, acting as chemical micropumps. The surface shows a high bacterial killing efficacy of attached bacteria and exhibits sustainable removal of bacteria as a result of UV-activatable micropumping originating from the photocatalytic reaction of AgCl microparticles. Our work provides an advance in the sustainable use of bacterial contact-killing surfaces stricto sensu through removal of dead bacteria and debris that may shield contact-killing sites.

链接：https://pubs.rsc.org/en/content/articlelanding/2022/CC/D2CC01343F