A novel Ag/ZnO core-shell structure for efficient sterilization synergizing antibiotics and subsequently removing residuals  

作　　者：Wenmei Han Wenli Wang Jie Fan Runping Jia Xuchun Yang Tong Wu Qingsheng Wu 

机构地区：[1]School of Chemical Science and Engineering,Shanghai Key Laboratory of Chemical Assessment and Sustainability,Institute of Advanced Study,Tongji University,Shanghai,200092,China [2]College of Textile and Clothing Engineering,China National Textile and Apparel Council Key Laboratory of Natural Dyes,Soochow University,Suzhou,215123,China [3]Department of Urology,Shanghai First People’s Hospital,School of Medicine,Shanghai Jiaotong University,Shanghai,200080,China [4]School of Materials Science and Engineering,Shanghai Institute of Technology,Shanghai,201418,China

出　　处：《Green Energy & Environment》2024年第2期366-377,共12页绿色能源与环境（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.22176145,82172612);the State Key Laboratory of Fine Chemicals,Dalian University of Technology(KF 2001);the Fundamental Research Funds for the Central Universities(22120210137).

摘　　要：The massive use of antibiotics has led to the aggravation of bacterial resistance and also brought environmental pollution problems.This poses a great threat to human health.If the dosage of antibiotics is reduced by increasing its bactericidal performance,the emergence of drug resistance is certainly delayed,so that there's not enough time for developing drug resistance during treatment.Therefore,we selected typical representative materials of metal Ag and semiconductor ZnO nano-bactericides to design and synthesize Ag/ZnO hollow core-shell structures(AZ for short).Antibiotics are grafted on the surface of AZ through rational modification to form a composite sterilization system.The research results show that the antibacterial efficiency of the composite system is significantly increased,from the sum(34.7%+22.8%-57.5%)of the antibacterial efficiency of AZ and gentamicin to 80.2%,net synergizes 22.7%,which fully reflects the effect of 1+1>2.Therefore,the dosage of antibiotics can be drastically reduced in this way,which makes both the possibility of bacterial resistance and medical expenses remarkably decrease.Subsequently,residual antibiotics can be degraded under simple illumination using AZ-self as a photocatalyst,which cuts off the path of environmental pollution.In short,such an innovative route has guiding significance for drug resistance.

关 键 词：Ag/ZnO hollow Core-shell structures ANTIBIOTICS GENTAMYCIN Synergistic sterilization PHOTODEGRADATION 

分 类 号：X703[环境科学与工程—环境工程]