title: Biomimetic Method To Assemble Nanostructured Ag@ZnO on Cotton Fabrics: Application as Self-Cleaning Flexible Materials with Visible-Light Photocatalysis and Antibacterial Activities.
abstract: A bioinspired mineralization route to prepare self-cleaning cotton fabrics by functionalizing their surface with nanostructured Ag@ZnO is demonstrated herein. In a polyamine-mediated mineralization process, while the nucleation, organization and coating of ZnO is done directly from water-soluble zinc salts under mild conditions, the entrapped polyamine in the ZnO matrix acts as reducing agent to generate Ag(0) from Ag(I) at room temperature. The Ag@ZnO coated cotton fabrics are characterized by FESEM, HRTEM, XRD, and UV-vis-DRS to confirm the formation and coating of Ag@ZnO particles on individual threads of the fabric. The presence of Ag nanoparticles not only enables the ZnO-coated fabrics exhibiting improved photocatalytic property but also allows for visible-light-driven activities. Furthermore, it exhibits efficient antimicrobial activity against both Gram-positive and Gram-negative bacteria. Therefore, besides these multifunctional properties, the polyamine-mediated bioinspired approach is expected to pave way for functionalization of flexible substrates under mild conditions as desirable for the development and fabrication of smart, lightweight, and wearable devices for various niche applications.
authors.affiliation: †Nanomaterials Laboratory, Inorganic and Physical Chemistry Division, and ‡Biotechnology Laboratory, Medicinal Chemistry and Pharmacology, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500007, India.
authors.forename: Joydeb
authors.initials: J
authors.lastname: Manna
authors.affiliation: †Nanomaterials Laboratory, Inorganic and Physical Chemistry Division, and ‡Biotechnology Laboratory, Medicinal Chemistry and Pharmacology, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500007, India.
authors.forename: Srishti
authors.initials: S
authors.lastname: Goswami
authors.affiliation: †Nanomaterials Laboratory, Inorganic and Physical Chemistry Division, and ‡Biotechnology Laboratory, Medicinal Chemistry and Pharmacology, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500007, India.
authors.forename: Nagaraju
authors.initials: N
authors.lastname: Shilpa
authors.affiliation: †Nanomaterials Laboratory, Inorganic and Physical Chemistry Division, and ‡Biotechnology Laboratory, Medicinal Chemistry and Pharmacology, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500007, India.
authors.forename: Nivedita
authors.initials: N
authors.lastname: Sahu
authors.affiliation: †Nanomaterials Laboratory, Inorganic and Physical Chemistry Division, and ‡Biotechnology Laboratory, Medicinal Chemistry and Pharmacology, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500007, India.
authors.forename: Rohit K
authors.initials: RK
authors.lastname: Rana
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000494:pharmacology; D018407:Bacterial Physiological Phenomena / Q000187:drug effects*; D040761:Biomimetic Materials / Q000138:chemical synthesis; D002384:Catalysis; D002470:Cell Survival / Q000187:drug effects; D032561:Cotton Fiber; D003460:Crystallization / Q000379:methods; D008027:Light; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000008:administration & dosage* / Q000737:chemistry; D012834:Silver / Q000737:chemistry* / Q000494:pharmacology*; D015034:Zinc Oxide / Q000737:chemistry* / Q000494:pharmacology
chemical_list: D000900:Anti-Bacterial Agents; D012834:Silver; D015034:Zinc Oxide
keywords: ZnO nanostructures; biomimetics; flexible electronics; functional coatings; photocatalysis