title: Photocatalytic and antibacterial properties of a TiO2/nylon-6 electrospun nanocomposite mat containing silver nanoparticles.
abstract: Silver-impregnated TiO(2)/nylon-6 nanocomposite mats exhibit excellent characteristics as a filter media with good photocatalytic and antibacterial properties and durability for repeated use. Silver nanoparticles (NPs) were successfully embedded in electrospun TiO(2)/nylon-6 composite nanofibers through the photocatalytic reduction of silver nitrate solution under UV-light irradiation. TiO(2) NPs present in nylon-6 solution were able to cause the formation of a high aspect ratio spider-wave-like structure during electrospinning and facilitated the UV photoreduction of AgNO(3) to Ag. TEM images, UV-visible and XRD spectra confirmed that monodisperse Ag NPs (approximately 4 nm in size) were deposited selectively upon the TiO(2) NPs of the prepared nanocomposite mat. The antibacterial property of a TiO(2)/nylon-6 composite mat loaded with Ag NPs was tested against Escherichia coli, and the photoactive property was tested against methylene blue. All of the results showed that TiO(2)/nylon-6 nanocomposite mats loaded with Ag NPs are more effective than composite mats without Ag NPs. The prepared material has potential as an economically friendly photocatalyst and water filter media because it allows the NPs to be reused.
authors.affiliation: Department of Bionanosystem Engineering, Chonbuk National University, Jeonju 561-756, Republic of Korea.
authors.forename: Hem Raj
authors.initials: HR
authors.lastname: Pant
authors.forename: Dipendra Raj
authors.initials: DR
authors.lastname: Pandeya
authors.forename: Ki Taek
authors.initials: KT
authors.lastname: Nam
authors.forename: Woo-Il
authors.initials: WI
authors.lastname: Baek
authors.forename: Seong Tshool
authors.initials: ST
authors.lastname: Hong
authors.forename: Hak Yong
authors.initials: HY
authors.lastname: Kim
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry* / Q000494:pharmacology; D002209:Caprolactam / Q000031:analogs & derivatives / Q000737:chemistry; D002384:Catalysis; D052918:Environmental Restoration and Remediation / Q000379:methods*; D004926:Escherichia coli / Q000187:drug effects; D005374:Filtration; D053768:Metal Nanoparticles / Q000737:chemistry*; D008751:Methylene Blue / Q000737:chemistry / Q000528:radiation effects; D053761:Nanocomposites / Q000737:chemistry*; D010084:Oxidation-Reduction; D055668:Photochemical Processes; D011108:Polymers / Q000737:chemistry; D012834:Silver / Q000737:chemistry; D012835:Silver Nitrate / Q000737:chemistry* / Q000528:radiation effects; D014466:Ultraviolet Rays
chemical_list: D000900:Anti-Bacterial Agents; D011108:Polymers; C009916:nylon 6; D012834:Silver; D002209:Caprolactam; D012835:Silver Nitrate; D008751:Methylene Blue