AVS 65th International Symposium & Exhibition
    Plasma Biology, Agriculture, and Environment Focus Topic Wednesday Sessions
       Session PB+BI+PC+PS-WeA

Paper PB+BI+PC+PS-WeA11
Radicals and Ozone Generated in Ar/He and Ar/He/H2O Plasma by using Atmospheric Pressure Plasma Jet Systems and their use in Methylene Blue Degradation

Wednesday, October 24, 2018, 5:40 pm, Room 104A

Session: Plasma Agriculture & Environmental Applications
Presenter: YiJinWei Wei, Ming Chi University of Technology, Taiwan, Republic of China
Authors: J.H. Hsieh, Ming Chi University of Technology, Taiwan, Republic of China
Y.J. Wei, Ming Chi University of Technology, Taiwan, Republic of China
C. Li, National Yang Ming University, Taiwan, Republic of China
Correspondent: Click to Email
Optical emission spectroscopy (OES) and UV absorption spectrometry were first used to gather information about the excited species present near/in the plasma plume generated using Ar/He and Ar/He/H2O gases with an atmospheric pressure plasma jet (APPJ). Afterward, the APPJ system was used to study its efficiency in degrading methylene blue as a function of radical and ozone density. According to the results, it was found that the degradation of methylene blue was directly related to the ozone concentration and, perhaps, OH radical density. Additional moisture may be used to control the ratio of ozone and OH radical density, resulting in the variation of degradation rate. Complete degradation of MB can be achieved in 80 seconds.