title: Preparation of surfactant-mediated silver and copper nanoparticles dispersed in hierarchical carbon micro-nanofibers for antibacterial applications.
abstract: The antibacterial potential of copper (Cu) and silver (Ag) nanoparticles dispersed in a phenolic resin precursor-based multi-scale web of carbon microfibers (ACFs) and nanofibers (CNFs) was assessed in this study. The multi-scale web of ACF/CNF was prepared by growing the CNFs on the ACF substrate by chemical vapor deposition (CVD). The Ag or Cu nanoparticles were used as the catalyst, and acetylene (C2H2) gas was used as the carbon source. An anionic surfactant, sodium dodecyl sulfate (SDS), was used for the preparation of the Cu/Ag-ACF composites to prevent the agglomeration of Cu(II) and Ag(I) ions and achieve a uniform mono-dispersion during the impregnation step. The prepared composites with Cu and Ag dispersed in the ACF and ACF/CNF were characterized using several analytical techniques, including atomic absorption spectroscopy (AAS), Fourier transform infrared (FTIR), X-ray diffraction (XRD), and thermal programming reduction (TPR). The antibacterial properties of the prepared multi-scale or hierarchical structures were evaluated against the gram-negative bacteria Escherichia coli (E. coli) and the gram-positive bacteria Staphylococcus aureus (S. aureus). The results revealed that the prepared Ag-ACF/CNFs were highly effective against these bacteria, achieving a complete inhibition of bacterial growth for over 72 hours.
authors.affiliation: Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India.
authors.forename: Shiv
authors.initials: S
authors.lastname: Singh
authors.forename: Mohammad
authors.initials: M
authors.lastname: Ashfaq
authors.forename: Rohitashaw Kumar
authors.initials: RK
authors.lastname: Singh
authors.forename: Harish C
authors.initials: HC
authors.lastname: Joshi
authors.forename: Anurag
authors.initials: A
authors.lastname: Srivastava
authors.forename: Ashutosh
authors.initials: A
authors.lastname: Sharma
authors.forename: Nishith
authors.initials: N
authors.lastname: Verma
mesh_terms: D000114:Acetylene / Q000737:chemistry; D000900:Anti-Bacterial Agents / Q000737:chemistry* / Q000494:pharmacology; D002244:Carbon / Q000737:chemistry; D003300:Copper / Q000737:chemistry*; D004926:Escherichia coli / Q000254:growth & development; D053768:Metal Nanoparticles / Q000737:chemistry*; D053761:Nanocomposites / Q000737:chemistry; D057139:Nanofibers / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*; D012967:Sodium Dodecyl Sulfate / Q000737:chemistry; D013211:Staphylococcus aureus / Q000254:growth & development
chemical_list: D000900:Anti-Bacterial Agents; D012967:Sodium Dodecyl Sulfate; D012834:Silver; D002244:Carbon; D003300:Copper; D000114:Acetylene
keywords: Activated carbon fibers; Bacteria; Carbon nanofibers; Chemical vapor deposition; Nanoparticles; Surfactant