Multiwalled Carbon Nanotube-N-Doped Graphene/Poly(3,4-ethylenedioxythiophene):Poly(styrenesulfonate) Nanohybrid for Electrochemical Application in Intelligent Sensors and Supercapacitors

Abstract

In this study, we reported the preparation of a conducting polymeric/inorganic nanohybrid consisting of multiwalled carbon nanotubes (MWCNT), N-doped graphene (NGr), and poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), and its electrochemical application in intelligent sensors and supercapacitors. The multilayer thin film of the PEDOT:PSS-supported MWCNT-NGr nanohybrid was prepared by a facile layer-by-layer assembly strategy. The obtained conducting polymeric/ inorganic nanohybrid modified electrode displayed superior electron transfer ability and a high specific surface area, which was used for electrochemical applications in intelligent sensors and supercapacitors. Remarkably, the fabricated amaranth sensor exhibited a broad linear range of 0.05−10 μM with a limit of detection of 0.015 μM under the optimal conditions. With the help of the response surface methodology, multivariate optimization was used as a substitute for the traditional single variable optimization to reflect the complete real effects of multivariate optimization in a sensing platform. Machine learning implemented by hybrid genetic algorithm-artificial neural network was used as an intelligent analysis model to replace the traditional regression analysis model for realizing intelligent analysis and output of sensing system. The MWCNT-NGr/PEDOT:PSS modified electrode exhibited a considerable specific capacitance of 6.5 mF cm −2 at a current density of 2.0 mA cm −2 . The proposed results provided a new thought for a nanosensing platform equipped with a supercapacitor as a selfpowered electrochemical energy storage system and machine learning as an intelligent analysis and output system in the near future.

Tailoring the electrochemical performance of PEDOT : PSS via incorporation of spray dryer processed graphene oxide

“…39 Xue et al reported MWCNTs-N-Doped Graphene/PEDOT:PSS nanohybrid exhibited the C sp of 6.5 mF cm À2 . 40 The above literature survey indicated the utility of PEDOT:PSS as well as it composites with other materials in SC application. Previously, most of researches are dedicated toward the synthesis of PEDOT:PSS and rGO composites.…”

“…Liu et al reported the Ag‐coated Tyvek/PEDOT:PSS/CNTs composite electrodes for SC application which performed the higher C sp of 138.7 F g −1 39 . Xue et al reported MWCNTs‐N‐Doped Graphene/PEDOT:PSS nanohybrid exhibited the C sp of 6.5 mF cm −2 40 …”

Recent Progress of Layer‐by‐layer Assembly, Free‐Standing Film and Hydrogel Based on Polyelectrolytes

“…It's known the layer‐by‐layer assembly in biosensing for the creation of biosensitive elements based on bacterial and yeast strains, [ 32 ] binding protein, [ 33 ] and aptamers. [ 34 ] The most commonly used layer‐by‐layer assembly based on electrostatic interactions using polyelectrolytes, [ 35–38 ] silver nanowires with oppositely charged part, [ 39 ] quantum dots, [ 40 ] carbon nanotubes, [ 41,42 ] and nanoparticles Bi/graphene oxide. [ 43 ] Described is the production through layer‐by‐layer electrodeposition of polyethylene and organometallic frameworks [ 44 ] and Au nanoparticles and polyelectrolytes.…”

Machine Learning for Design of Phosphorene Nanozyme Sensor and Its Intelligent Analysis of Clenbuterol in Animal-Derived Agro-Products

“…Thework range of the sensor is 0.2 ∼ 122.2 μM, and the LOD is 13.9 nM. Xue et al 25 prepare MWCNT-NGr/PEDOT: z E-mail: wenyangping1980@jxau.edu.cn; aisrong@163.com PSS/GCE nanosensor for amaranth. The response surface method is used for the optimization of five factors of the sensor, the linear range of the prepared sensor is 0.05 ∼ 10 μM and the LOD is 0.015 μM under the optimal conditions.…”