Plasma‐activated ethanol solution and it's decontamination effect
YiQian Li,
JiaLin Liu,
Feng Zhao,
Ke Song,
LanLan Nie,
DaWei Liu,
XinPei Lu
Affiliations
YiQian Li
State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan Hubei China
JiaLin Liu
State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan Hubei China
Feng Zhao
Department of Thoracic Surgery Union Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan China
Ke Song
Center of Stomatology Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan China
LanLan Nie
State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan Hubei China
DaWei Liu
State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan Hubei China
XinPei Lu
State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan Hubei China
Abstract Ethanol solution as a disinfectant has been widely used in various fields. However, it has a significant bactericidal capability only when the volume fraction of ethanol is around 70%–75%. For such high concentration of ethanol solution, it has an irritating smell. When it is used for applications such as wound disinfection, it causes a stinging sensation. Low concentrations of ethanol solution are less irritating, but it is also less effective at killing bacteria. In this study, an idea for producing a green, efficient and less irritating disinfectant is proposed. It is based on a plasma‐activated low‐concentration ethanol solution (PAES). It is found that the plasma‐activated 10% volume fraction of ethanol solution can kill more than seven orders of magnitude of Escherichia coli, while the untreated 10% volume fraction of ethanol solution has no bactericidal effect. Besides, the PAES's activity remains unchanged after being stored at −20°C for three days. Further investigation shows that new compositions including peracetic acid, peroxynitrite, hydrogen peroxide and acetic acid are detected in the PAES, which together are playing the main role of the excellent and prolonged bactericidal effect.
