A new class of PANI-Ag core-shell nanorods with sensing dimensions.
A single-step, cost-effective and eco-safe synthesis of a new class of homogeneous silver-polyaniline (PANI-Ag) core-shell nanorods is carried out via mild photolysis by ultraviolet radiation from sunlight (SUN UV-radiation). X-ray diffraction (XRD) of these core-shell nanorods gives two additional peaks from PANI centered at 2θ = 20.5° and 24. 9°. A validation of the core-shell structural information is given by transmission electron spectroscopy (TEM) whereas the tubular shape morphology is determined by scanning electron microscopy (SEM). UV-Vis. absorption shows a strong blue-shift along with photoluminescence emission. Fourier transform-infrared spectroscopy (FT-IR) and energy dispersive X-ray spectroscopy (EDX) also support the core-shell formation. Thermogravimetric analysis (TGA) shows good thermal stability and allows excellent detection of hydrogen peroxide and hydrazine. The cyclic voltammetry (CV) results show excellent electro-activation, indicating its promising potential in sensing of clinical and environmental analytes.
Nanotechnology Application Centre, Faculty of Science, University of Allahabad, Allahabad 21102, India. vineet2shukla@gmail.com
Vineet K
VK
Shukla
Poonam
P
Yadav
Raghvendra S
RS
Yadav
Priya
P
Mishra
Avinash C
AC
Pandey
D000814:Aniline Compounds / Q000737:chemistry*; D055664:Electrochemical Techniques; D004566:Electrodes; D006834:Hydrazines / Q000032:analysis; D006861:Hydrogen Peroxide / Q000032:analysis; D043942:Nanotubes / Q000737:chemistry* / Q000648:ultrastructure; D012834:Silver / Q000737:chemistry*; D014867:Water / Q000737:chemistry
D000814:Aniline Compounds; D006834:Hydrazines; C416807:polyaniline; D014867:Water; C029424:hydrazine; D012834:Silver; D006861:Hydrogen Peroxide