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Green Surface Cleaning in a Radical Vapor Reactor to Remove Organic Fouling on a Substrate

Year: 2018

Journal: Electrochemistry, Volume 86, page 355–362

Authors: Yamasaki, Ryota; Takatsuji, Yoshiyuki; Morimoto, Masayuki; Sakakura, Tatsuya; Matsuo, Keishi; Haruyama, Tetsuya

Keywords: Radical Vapor Reactor; Surface Cleaning; Reactive Oxygen Species; Organic Fouling

Green cleanup processes for adhered organic fouling on solid surfaces can be successfully performed using a radical vapor reactor (RVR). The RVR can produce large concentrations of reactive oxygen species (ROS, e.g. singlet oxygen (O-1(2)) and hydroxyl radicals (center dot OH)) and can expose them to objective materials. The RVR finds excellent utility in the fields of sterilization and surface functionalization. In this study, RVR is employed in a green cleanup of solid surfaces fouled by an organic polymer and a protein. The RVR produced ROS and removed the adhered organic polymers and proteins from the solid surface. The mechanism of how ROS react with fouling molecules was also elucidated by surface analysis. The greatest advantage of this green RVR cleanup process is that it discharges only air and water. The ROS production and exposure by the RVR successfully cleaned the adhered organic polymer and protein at ambient temperature and pressure without any chemicals. This high-quality, low-cost cleaning technology, which does not require much time and produces no hazardous waste, makes a great contribution to the cleaning industry. (c) The Electrochemical Society of Japan, All rights reserved.