A structurally aligned nickel oxide encapsulated polypyrrole nanocomposite for hydrogen peroxide sensing

摘要: A chemically responsive and structurally aligned nickel oxide encapsulated polypyrrole nano-composite (NiO-en-PPy) has been prepared using intrinsically functionalized pyrrole monomers by in situ polymerization composite formation techniques under optimized conditions. The samples were characterized FT-IR spectroscopy, Raman X-ray diffraction (XRD), scanning electron microscopy (SEM), thermal gravimetric analysis. Thus, the obtained results revealed of nanocomposite with crystallinity, an interactive surface, improved electrical conductivity 103 times, better stability than those pristine due to functionalization structural synergism between molecules. Furthermore, a spin-cast film NiO-en-PPy on ITO coated glass was explored for electrochemical sensing hydrogen peroxide liquid gas phase monitoring change resistance potential. observed parameters gaseous state sensitivity 22.7 Ω ppm−1 92.25 μV cm−2 liquid, response time 30s 150 s recovery 70s 20 limit detection 0.073692 ppm 0.073649 durability 90 days. mechanism also explained based electroactive interaction evolved Ni sites matrix molecules along role induced PPy chain. finding reveals advancements functional materials science properties its use chemical devices biosensors, non-enzymatic estimation reactive oxygen species.