BioMoSS: ROS-generating Photocatalysts for the Disinfection of Potable Water Systems

Date

2020-07-31

Journal Title

Journal ISSN

Volume Title

Publisher

2020 International Conference on Environmental Systems

Abstract

With NASA’s desire to replace iodine as the biocide within the potable water system of future missions, we continue our development of the biocidal MoS2 (BioMoSS) system. BioMoSS is a visible-light activated photocatalyst based upon few-layered vertically aligned molybdenum disulfide (FLV-MoS2) for the production of reactive oxygen species (ROS) as a biocide. FLV-MoS2 has been reported to have a high bacterial kill rate. We report significant improvements in the vertical-alignment and biocidal efficacy of the FLV-MoS2 compared to our initial results reported last year. Furthermore, we report the results of peroxide formation with and without surface deposition using gold. Finally, we investigate the delamination of the FLV-MoS2 films under immersion in water.

Description

John Abdou, KBR, USA
John Vance, KBR, USA
Anna Lu, KBR, USA
Lance Delzeit, National Aeronautics and Space Administration (NASA), USA
ICES303: Physio-Chemical Life Support- Water Recovery & Management Systems- Technology and Process Development
The proceedings for the 2020 International Conference on Environmental Systems were published from July 31, 2020. The technical papers were not presented in person due to the inability to hold the event as scheduled in Lisbon, Portugal because of the COVID-19 global pandemic.

Keywords

BioMoSS, molybdenum disulfide (MoS2), FLV-MoS2, reactive oxygen species (ROS), biocide, biocidal

Citation