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Structure and wrapping structure of PPy/CNCs. (a) Tree; (b) Cellulose fiber; (c) The molecular structure of cellulose; (d) CNC obtained by acid hydrolysis. (e) The co-assembly process of CNC and n-type material. N-type material refers to the material mainly conductive by electrons. CNC molecules are orderly arranged in layer upon layer in composite materials. (f) The co-assembly process of CNC and p-type material. P-type material refers to the material mainly conductive by holes. CNC molecules are distributed disordered and superimposed layer by layer to form composite materials. (g) The wrapping structure of PPy/CNCs and the possible bonding modes of hydrogen bonds. (h) PPy/CNCs composite conductive layer; (i) Possible sedimentary structure of PPy/CNCs.
Source publication
A simple and novel method for the deposition of polypyrrole (PPy) and cellulose nanocrystal (CNC) composites on different fiber substrates by reactive ink-jet printing was proposed. PPy/CNCs composites were successfully prepared, and the surface resistance of conductive layer deposited on different fiber substrates is the least when the monomer con...
Contexts in source publication
Context 1
... have reported that CNC has a Chiral nematic liquid crystal phase structure in aqueous solution, and different surface charge types of materials affect the self-assembly performance of CNC. The assembly modes of CNC composite material are shown in Figure 3e,f, which are n-type and p-type, respectively. The negatively charged material particles are parallel to the long axis of CNC and do not affect the chiral nematic ordering of CNC. ...
Context 2
... a strong intermolecular hydrogen bonding force is used to co-assemble the composite materials of PPy and CNC. In the presence of the oxidant APS, Py is polymerized on the CNC surface to form a powerful PPy package, which is attributed to the effect of hydrogen bonding (see Figure 3g). At the same time, PPy in PPy/CNCs composites also forms strong hydrogen bonds with the fiber substrate, which makes PPy/CNCs firmly attached to the fiber substrate [26]. ...
Context 3
... the same time, PPy in PPy/CNCs composites also forms strong hydrogen bonds with the fiber substrate, which makes PPy/CNCs firmly attached to the fiber substrate [26]. The PPy/CNCs will readily be stacked layer upon layer to form composite materials conductive layer through order arrangement, disorder arrangement or orderly disorder coexistence (see Figure 3h,i). ...
Citations
... 0.1 M monomer form of pyrrole and 1 M of HCl were stirred with distilled water and further with 200 mg of CdS nanoparticles (Sigma Aldrich) with respect to the pyrrole. Then, 0.1 M ammonium persulfate was dissolved in 100 mL of deionized water and gently added drop by drop to the above-prepared solution for an hour (Wilczewska et al. 2022;Li et al. 2022a). After 6 h of stirring, the solution (pH value, 6.1) was washed with double-distilled water and methanol. ...
The modern world requires a chemical industry that can run at low production costs while producing high-quality products with minimal environmental impact. The development of environmentally friendly, cost-effective, and efficient wastewater treatment materials remains a major problem for the sustainable approach. We prepared nanoscale cadmium sulfide (CdS)-enwrapped polypyrrole (PPy) polymer composites for degradation of organic pollutants. The prepared CdS@PPy nanocomposites were characterized by powder X-ray diffraction, scanning electron microscope (SEM), field emission scanning electron microscope (FESEM), Fourier transform infrared spectroscopy (FTIR), and ultraviolet–visible (UV) absorption spectroscopy, indicating proper intercalation between CdS and PPy. Consequently, the catalytic efficiency of the synthesized hybrid nanocomposites was analyzed through the degradation of methylene blue (MB) and rhodamine B (Rh B) under visible light irradiation. The measured degradation efficiency of the dye solutions under the photolysis process is about 18% and 23% for MB and Rh B dye, respectively. Furthermore, the recycle test result concludes that the CdS@PPy composite exhibits 91% and 89% of MB and Rh B dye degradation efficiency even at the 4th cycle, respectively. The positive synergistic impact of CdS and PPy may be the result of effective photocatalytic degradation of MB and RhB.
Paper and fabric substrates are important foundational materials for the fabrication of flexible and printed electronic devices. This paper combines the research work undertaken for the project and, based on a review of the literature, comprehensively summarizes the roles, classifications, and processing techniques of paper-based and fabric materials in flexible and printed electronics. It compares the preparation techniques of such devices and introduces the achievements of chemical sintering and in-situ polymerization on paper-based electronics. Literature retrieval and analysis indicate that the development of paper-based/fabric electronic devices is essentially synchronized both domestically and internationally. It is believed that paper-based/fabric-based flexible electronic devices, including but not limited to circuits, electrodes, RFID tags, sensors, energy storage, and conversion devices, have their respective applications: paper-based devices are suitable for disposable, low-cost applications, while fabric-based devices are more suitable for wearable electronic products. Overall, in line with global carbon emissions control efforts, conductive and semiconductor materials suitable for fabric/paper-based flexible electronic products, including nano metals, conductive polymers, carbon materials, MXene, and other materials, will be prioritized for development. The related fabric/paper-based coating and printing industries will also rise in tandem with this trend.
Herein, this work involves the synthesis and characterization of ZnO nanoparticles, which possess electroactive properties and are produced using an environmentally friendly and non-toxic synthesis method. The novelty of this study compared to the literature is that the flexible and wearable ZnO@Polypyrrole-P(VSANa) electrode, synthesized with the green synthesis approach, was used as a nonenzymatic sensor for H2O2 and its supercapacitor performance was examined. We report an H2O2 sensor developed with ZnO@Polypyrrole-Polyvinyl sulfonic acid sodium salt (ZnO@PPy-P(VSANa) coated carbon felt (CF) electrode and a symmetric supercapacitor fabricated with the same electrode using a hydrothermally produced ZnO@PPy-P(VSANa) coated carbon felt (CF) electrode. The linear ranges of the sensor to H2O2 were determined as 0.2–2.5 µM and 2.5–100 µM. The detection limit for H2O2 was calculated as 0.044 µM. Real sample analyses of the sensor, whose efficiency was investigated for practical application, were performed on different real samples. Using the same electrode ZnO@PPy-P(VSANa) coated CF, a symmetric supercapacitor device operating in the potential range of 0–1.0 V in PVA-H3PO4 electrolyte was developed. A specific capacitance of 171.8 F g−1 at a scan rate of 5 mV s−1 was obtained for the resulting symmetric supercapacitor.
