Highly Conductive Polyfuran-13X Zeolite-Polyaniline Composite

Sardar, Pinki Saha; Ghosh, Sanjib; Biswas, Mukul; Ballav, Nirmalya

doi:10.1295/polymj.pj2008172

Cited by 19 publications

(9 citation statements)

References 33 publications

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“…As shown in Figure S4, a series of polyfuran bands were observed in the FT-IR spectrum of HTCC. The wide bands located at 1612 and 1384 cm –1 and two shoulder bands at 1440 and 960 cm –1 are ascribed to the vibrational modes of the furan monomer . The band centered at 1514 cm –1 is assigned to the CC stretching of the furan ring in the polymer.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Visible-Light-Driven Photocatalytic Bacterial Inactivation by Ultrathin Carbon-Coated Magnetic Cobalt Ferrite Nanoparticles

Wang

Jiang

et al. 2018

Environ. Sci. Technol.

120

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Ultrathin hydrothermal carbonation carbon (HTCC)-coated cobalt ferrite (CoFeO) composites with HTCC coating thicknesses between 0.62 and 4.38 nm were fabricated as novel, efficient, and magnetically recyclable photocatalysts via a facile, green approach. The CoFeO/HTCC composites showed high magnetization and low coercivity, which favored magnetic separation for reuse. The results show that the close coating of HTCC on CoFeO nanoparticles enhanced electron transfer and charge separation, leading to a significant improvement in photocatalytic efficiency. The composites exhibited superior photocatalytic inactivation toward Escherichia coli K-12 under visible-light irradiation, with the complete inactivation of 7 log cfu·mL of bacterial cells within 60 min. The destruction of bacterial cell membranes was monitored by field-effect scanning electron microscopy analysis and fluorescence microscopic images. The bacterial inactivation mechanism was investigated in a scavenger study, and O, HO, and h were identified as the major reactive species for bacterial inactivation. Multiple cycle runs revealed that these composites had excellent stability and reusability. In addition, the composites showed good photocatalytic bacterial inactivation performance in authentic water matrices such as surface water samples and secondarily treated sewage effluents. The results of this work indicate that CoFeO/HTCC composites have great potential in large-scale photocatalytic disinfection operations.

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Section: Resultsmentioning

confidence: 99%

Enhanced Visible-Light-Driven Photocatalytic Bacterial Inactivation by Ultrathin Carbon-Coated Magnetic Cobalt Ferrite Nanoparticles

Wang

Jiang

et al. 2018

Environ. Sci. Technol.

120

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“…In Fig. 2A, bulk PFu rings exhibits a maximum absorption band at 302 nm corresponds to a π–π* transition [40]. Based on the literature, it is obviates that UV–Vis spectra of the MWCNTs‐COOH shows an absorption band at 249 nm, which is attributed to CC bonds of MWCNTs [39].…”

Section: Resultsmentioning

confidence: 99%

“…PFu conducting polymers have been synthesized by chemical and electrochemical methods in aqueous or organic media [35, 36]. In recent years to improve the physical properties of PFu, various methods have been reported for the preparation of PFu based composites [37–40].…”

Section: Introductionmentioning

confidence: 99%

Novel polyfuran/functionalized multiwalled carbon nanotubes composites with improved conductivity: Chemical synthesis, characterization, and antioxidant activity

et al. 2013

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Novel composites containing very small quantities of functionalized multiwalled carbon nanotubes (MWCNTs-COOH; 0.025, 0.050, and 0.075 g), and furan were synthesized via in situ chemical oxidative polymerization. The polymerization was carried out in nitromethane at room temperature using anhydrous iron (III) chloride (FeCl 3 ) as an oxidant. The nanocomposites were characterized by Fourier transform infrared, ultraviolet-visible, X-ray diffraction, differential scanning calorimetry, and field emission scanning electron microscopy. All synthesized composites were crystalline and showed good solubility in dimethyl sulfoxide and N-methyl 2-pyrrolidone. The conductivity of composites was measured with a four-probe method, and it was found that the electrical conductivity increased by increasing the amount of MWCNTs-COOH. The maximum electrical conductivity value (6.68 3 10 24 S cm 21 ) was obtained for polyfuran/MWCNTs-COOH (1:0.075, v/ w). The resulting composites were analyzed for their antioxidant activity using 2,2-diphenyl-1-picrylhydrazyl assay. The results showed that the antioxidant activity of the composites increased by increasing the amount of MWCNTs-COOH in nanocomposite. POLYM. COM-POS., 34:732-739, 2013. ª

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“…They concluded that due to pore size of nanometer scale in zeolite, it was a promising material for conducting polymers. In another study, Sardar et al 163 reported the synthesis of highly conductive polyfuran/13X zeolite/polyaniline composite via in situ chemical oxidative polymerization of furan monomer with anhydrous FeCl 3 in the presence of 13X zeolite, followed by the oxidative copolymerization of aniline with ammonium peroxydisulfate (APS) in the presence of an aqueous dispersion of preformed PFu/13X composite. Some typical data on the polymerization and synthesized composite by Sardar et al are summarized in Table 4 and 5.…”

Section: Other Conductive Polymers/zeolite (Nano-)compositesmentioning

confidence: 99%