Preparation and antibacterial activity of Ag-doped TiO2 coating on the porous surface of aluminum
Year: 2024
Type: article
Abstract: Aluminum (Al) and its alloys have been widely used in daily life, but the absence of antibacterial properties makes them potential vectors for bacterial transmission. In this study, an Ag-doped TiO2 coating was successfully prepared on the porous surface of etched Al foil using the sol-gel method. The results indicated that the porous layer allowed the gel to permeate through the holes, thereby forming an interface carrying these antibacterial agents with a thickness of about 10 μm. The Ag dopant promoted the transformation of titania from rutile to anatase during the calcination process, with the rutile being absent when the atomic ratio of Ag to Ti reached 0.10. Meanwhile, the doped Ag+ was thermally decomposed into metallic Ag0. As a result, doping Ag enhanced the photocatalytic efficacy of TiO2 coating. Moreover, the antibacterial rate of this coating against Escherichia coli and Staphylococcus aureus under dark conditions could reach more than 99%, and the corrosion resistance of the Al foil was also slightly improved by it.
Authors: Jing Bai, Yue Zhang, Huiyi Wang, Xiaobing Lu, Yan Wang, Man Xu, Xi Tan, Jia Ju, Yi Shao, Huan Liu, Chenglin Chu, Feng Xue
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,430
Funders: Deutscher Akademischer Austauschdienst, Shanxi Scholarship Council of China, China Scholarship Council, Suzhou Municipal Science and Technology Bureau, State Key Laboratory of Advanced Materials and Electronic Components, Guangdong Fenghua Advanced Technology Holding, Jihua Laboratory, Deutscher Akademischer Austausch Dienst Kairo, Jiangsu Key Laboratory for Advanced Metallic Materials
OpenAlex ID: W4401487705