Abstract
Metal-conducting polyaniline (PANI)-based nanocomposite materials have attracted attention in various applications due to their synergism of electrical, mechanical, and optical properties of the initial components. Herein, metal-PANI nanocomposites, including silver nanoparticle-polyaniline (AgNP-PANI), zinc oxide nanoparticle-polyaniline (ZnONP-PANI), and silver-zinc oxide nanoparticle-polyaniline (Ag–ZnONP-PANI), were prepared using the two processes. Nanocomposite-based electrode platforms were prepared by depositing AgNPs, ZnONPs, or Ag–ZnONPs on a PANI modified glass carbon electrode (GCE) in the presence of 1-ethyl-3-(3-dimethyl aminopropyl) carbodiimide/N-Hydroxysuccinimide (EDC/NHS, 1:2) as coupling agents. The incorporation of AgNPs, ZnONPs, and Ag–ZnONPs onto PANI was confirmed by UV-Vis spectrophotometry, which showed five absorbance bands at 216 nm, 412 nm, 464 nm, 550 nm, and 831 nm (i.e., transition of π-π*, π-polaron band transition, polaron-π* electronic transition, and AgNPs). The FTIR characteristic signatures of the nanocomposite materials exhibited stretching arising from C–H aromatic, C–O, and C–N stretching mode for benzenoid rings, and =C–H plane bending vibration formed during protonation. The CV voltammograms of the nanocomposite materials showed a quasi-reversible behavior with increased redox current response. Notably, AgNP–PANI–GCE electrode showed the highest conductivity, which was attributed the high conductivity of silver. The increase in peak currents exhibited by the composites shows that AgNPs and ZnONPs improve the electrical properties of PANI, and they could be potential candidates for electrochemical applications.
Highlights
IntroductionIntroduction published maps and institutional affilNanomaterials have found more applications compared to their large-scale counterparts due to their distinctive physical, chemical, and biological properties [1,2]
Introduction published maps and institutional affilNanomaterials have found more applications compared to their large-scale counterparts due to their distinctive physical, chemical, and biological properties [1,2]
AgNP-PANI, zinc oxide nanoparticles (ZnONPs)-PANI, and Ag–ZnONP-PANI composites were successfully synthesized by two processes
Summary
Introduction published maps and institutional affilNanomaterials have found more applications compared to their large-scale counterparts due to their distinctive physical, chemical, and biological properties [1,2]. Their synthesis, design, and manipulation have recently found great attention due to their wide applications in various fields including medicine, sensors, renewable energies, cosmetology, and bio-therapeutic devices [6,7,8] Nanomaterials, such as quantum dots, zinc oxide nanoparticles (ZnONPs), gold nanoparticles (AuNPs), and AgNPs, offer enzyme-free sensing strategies as electroactive labels for direct signal output [9,10] redox ability [11,12], excellent biocompatibility [13], and electro catalytic activity [14,15,16]. Additional advantages of these nanomaterials are simple preparation methods [16], synthesis over a wide range of sizes and shapes [17], and easy surface conjugation to various ligands [18,19]. iations.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
