title: Self-decontaminating photocatalytic zinc oxide nanorod coatings for prevention of marine microfouling: a mesocosm study.
abstract: The antifouling (AF) properties of zinc oxide (ZnO) nanorod coated glass substrata were investigated in an out-door mesocosm experiment under natural sunlight (14:10 light: dark photoperiod) over a period of five days. The total bacterial density (a six-fold reduction) and viability (a three-fold reduction) was significantly reduced by nanocoatings in the presence of sunlight. In the absence of sunlight, coated and control substrata were colonized equally by bacteria. MiSeq Illumina sequencing of 16S rRNA genes revealed distinct bacterial communities on the nanocoated and control substrata in the presence and absence of light. Diatom communities also varied on nanocoated substrata in the presence and the absence of light. The observed AF activity of the ZnO nanocoatings is attributed to the formation of reactive oxygen species (ROS) through photocatalysis in the presence of sunlight. These nanocoatings are a significant step towards the production of an environmentally friendly AF coating that utilizes a sustainable supply of sunlight.
authors.affiliation: a Department of Marine Science & Fisheries, College of Agricultural & Marine Sciences , Sultan Qaboos University , Muscat , Sultanate of Oman.|b Chair in Nanotechnology, Water Research Center , Sultan Qaboos University , Muscat , Sultanate of Oman.
authors.forename: Priyanka
authors.initials: P
authors.lastname: Sathe
authors.affiliation: a Department of Marine Science & Fisheries, College of Agricultural & Marine Sciences , Sultan Qaboos University , Muscat , Sultanate of Oman.|c Hochschule Bremerhaven , Bremerhaven , Germany.
authors.forename: Jutta
authors.initials: J
authors.lastname: Richter
authors.affiliation: b Chair in Nanotechnology, Water Research Center , Sultan Qaboos University , Muscat , Sultanate of Oman.|d Department of Physics, College of Science , Sultan Qaboos University , Muscat , Sultanate of Oman.
authors.forename: Myo Tay Zar
authors.initials: MT
authors.lastname: Myint
authors.affiliation: a Department of Marine Science & Fisheries, College of Agricultural & Marine Sciences , Sultan Qaboos University , Muscat , Sultanate of Oman.
authors.forename: Sergey
authors.initials: S
authors.lastname: Dobretsov
authors.affiliation: b Chair in Nanotechnology, Water Research Center , Sultan Qaboos University , Muscat , Sultanate of Oman.|e Functional Materials Division, Materials and Nano-Physics Department , ICT School, KTH Royal Institute of Technology , Kista Stockholm , Sweden.
authors.forename: Joydeep
authors.initials: J
authors.lastname: Dutta
mesh_terms: D000891:Anti-Infective Agents, Local / Q000494:pharmacology; D059001:Aquatic Organisms / Q000187:drug effects / Q000502:physiology; D018407:Bacterial Physiological Phenomena / Q000187:drug effects; D057219:Biofouling / Q000517:prevention & control*; D020099:Coated Materials, Biocompatible / Q000494:pharmacology; D003666:Decontamination; D017377:Diatoms / Q000187:drug effects / Q000502:physiology; D043942:Nanotubes; D055668:Photochemical Processes / Q000187:drug effects; D013472:Sunlight; D013473:Sunscreening Agents / Q000494:pharmacology; D015034:Zinc Oxide / Q000494:pharmacology*
chemical_list: D000891:Anti-Infective Agents, Local; D020099:Coated Materials, Biocompatible; D013473:Sunscreening Agents; D015034:Zinc Oxide
keywords: MiSeq sequencing; Zinc oxide; biofilms; mesocosm; nanorod coating; photocatalysis