SILAR deposited antiviral silver-doped ceria nano-films

被引:0
作者
Kumar, Udit [1 ,2 ]
Marcelo, Erik [1 ,2 ]
Fox, Candace R. [3 ]
Kolanthai, Elayaraja [1 ,2 ]
Fu, Yifei [1 ,2 ]
Feit, Corbin [2 ]
Harb, Samarah, V [1 ,2 ]
Hnatiuk, Michael [4 ]
Shandilya, Avani [4 ]
Banerjee, Parag [2 ,5 ,6 ,7 ]
Parks, Griffith D. [2 ]
Seal, Sudipta [1 ,2 ,5 ,8 ]
机构
[1] Univ Cent Florida, Adv Mat Proc & Anal Ctr, Dept Mat Sci & Engn, Engn 1 Rm 207,12800 Pegasus Dr, Orlando, FL 32816 USA
[2] Univ Cent Florida, Dept Mat Sci & Engn, Orlando, FL 32816 USA
[3] Univ Cent Florida, Coll Med, Burnett Sch Biomed Sci, Orlando, FL 32827 USA
[4] Univ Cent Florida, Coll Engn & Comp Sci, Dept Comp Sci, Orlando, FL 32827 USA
[5] Univ Cent Florida, Nanosci Technol Ctr NSTC, Orlando, FL 32816 USA
[6] Univ Cent Florida, Fac Cluster Initiat, Renewable Energy & Chem Transformat REACT, Orlando, FL 32816 USA
[7] Univ Cent Florida, Florida Solar Energy Ctr FSEC, Orlando, FL USA
[8] Univ Cent Florida, Coll Med, Biionix Cluster, Orlando, FL 32816 USA
基金
美国国家科学基金会;
关键词
Antiviral coating; Ceria; SILAR; Thin film; Nanomaterials; Coronavirus; IONIC LAYER ADSORPTION; THIN-FILMS; OXIDE NANOPARTICLES; REACTIVITY;
D O I
10.1016/j.surfin.2024.104773
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Amid the COVID-19 global pandemic, ceria nanomaterials (CN) have garnered renewed interest as potential antiviral agents due to their ability to generate reactive oxygen species (ROS) on their surfaces. Enhancing ROS generation through precise defect engineering is key to improving these antiviral properties. This can be achieved through various methods, such as altering nano-dimensions and doping. In this context, we report on silver-doped ceria thin films. We have employed a cost-effective SILAR (Successive Ionic Layer Adsorption and Reaction) method for ceria nano-film deposition, which offers excellent control over film thickness. Utilizing an Arduino-controlled layer-by-layer (LBL) setup, we achieved precise control over the deposition process. This method facilitated the easy doping of ceria nano-films with silver ions. The silver-doped SILAR ceria thin films of varying thicknesses were subjected to antibacterial testing against E. coli bacteria. The samples with the highest antibacterial activity were further tested for antiviral efficacy against Feline calicivirus. The 80 SILAR Layers AgCeria sample exhibited the best activity, completely deactivating the viral titer (10(5)). This sample, when further tested against OC43 coronavirus, demonstrated a > 99 % reduction in virus titer. The mechanisms underlying these antimicrobial properties were investigated using antioxidative testing assays.
引用
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页数:13
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