Dramatic enhancement in adsorption of congo red dye in polymer-nanoparticle composite of polyaniline-zinc titanate

Singh, Somendra; Perween, Shama; Ranjan, Amit

doi:10.1016/j.jece.2021.105149

Cited by 82 publications

(17 citation statements)

References 66 publications

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“…Such observation has often been reported in the literature as an illustration of a so‐called synergistic effect 3 . Indeed, various organic and inorganic substrates coated with conducting polymers have proved to be better adsorbents or photocatalysts than individual components alone 24,26–33 . Such synergistic effect can again be explained by the improved brush‐like ordering of the polymer chains deposited at the substrate surface 33–35 compared with disordered form in the globules.…”

Section: Resultsmentioning

confidence: 63%

“…Indeed, various organic and inorganic substrates coated with conducting polymers have proved to be better adsorbents or photocatalysts than individual components alone 24,26–33 . Such synergistic effect can again be explained by the improved brush‐like ordering of the polymer chains deposited at the substrate surface 33–35 compared with disordered form in the globules. Please note that the formation of nanotubes can also be regarded as the surface coating of the template afforded, for example, by some dyes 3 and, for that reason, the nanotubes may have better chain‐ordering and consequent higher conductivity 36 or dye adsorption 18,37 compared with the common globular form.…”

Section: Resultsmentioning

confidence: 99%

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Adsorption of organic dyes on macroporous melamine sponge incorporating conducting polypyrrole nanotubes

Stejskal

Pekárek

Kolská

2022

J of Applied Polymer Sci

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The macropores of melamine sponge were coated with globular polypyrrole or polypyrrole nanotubes. The resulting materials have been tested for the adsorptive removal of organic dyes from aqueous medium. The nanotubes deposited on the sponge were able to remove Reactive Black 5 dye while the adsorption on analogous polypyrrole globules was marginal. For that reason, the macroporous open‐cell melamine sponge with embedded nanotubes was tested for the adsorption of five anionic and five cationic dyes. The anionic dyes were adsorbed efficiently in the contrast to cationic ones. This can be explained by the electrostatic interaction of anionic dyes with polypyrrole polycation. The fast‐starting adsorption occurred within a few minutes and was followed by a slower process extending for days. The nanotubes deposited on the sponge have always been more efficient adsorbents than free polypyrrole nanotubes or melamine sponge alone. Better organization of polymer chains in the polypyrrole nanotubes and especially those deposited on the melamine sponge is proposed to be responsible for this effect. Cationic dyes were adsorbed even by neat melamine sponge while the adsorption by polypyrrole was negligible. In this case, the indifferent role of polypyrrole can be assigned to the electrostatic repulsion of the dye.

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Section: Resultsmentioning

confidence: 63%

Section: Resultsmentioning

confidence: 99%

Adsorption of organic dyes on macroporous melamine sponge incorporating conducting polypyrrole nanotubes

Stejskal

Pekárek

Kolská

2022

J of Applied Polymer Sci

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“…The adsorption capacities of CR and MB dyes were 83.82 mg.g − 1 and 71.19 mg.g − 1 , respectively. These values were higher than many adsorbents to remove CR and MB dyes from the solution [18,[33][34][35][36][37][38][39][40][41][42][43][44]. Compared with those reported adsorbents, the resulting hybrid material displayed higher a nities with these two dyes.…”

Section: Adsorption Capacities For Organic Dyesmentioning

confidence: 74%

“…CR PANI@ZnO 69.82 [18] PVC@graphene-polyaniline 14.94 [33] Polyaniline 50 [34] PANI@SiO 2 71 [35] Pani@MoS 2 70.92 [36] PANI/ZTO 64.51 [37] Chitosan/montmorillonite nanocomposite 54.52 [38] PANI@ZnO-SiO 2 83.82 This work MB PANI@ZnO 59.23 [18] PANI zirconium (IV) silicophosphate 8.8 [39] CDs initiated PANI 18 [40] CDs initiated PPY 16 [40] PANI/zirconium oxide 35 [41] Polyaniline nanotube base/silica composite) 5.38 [42] SW-ZnO-PANI hybrid composite 20.55 [43] Polyaniline nanotubes 9.21 [44] PANI@ZnO-SiO 2…”

Section: Dyes Adsorbentsmentioning

confidence: 99%

Development and Characterization of Novel Hybrid Materials Formed from ZnO-SiO2-Modified and Polyaniline for Organic Dyes Adsorption and Electrochemical Supercapacitor Applications

Benchikh

Lahreche

Benmimoun

et al. 2022

Preprint

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Polyaniline (PANI) coated ZnO-SiO2 based hybrid material was prepared successfully by in-situ polymerization method and the product was analyzed by XPS, XRD, TEM, UV-vis, TGA, FTIR and BET techniques. According to these characterization results, ZnO were successfully incorporated with SiO2 and PANI matrix was also supported on ZnO–SiO2. The optical band gap was calculated from the Tauc’s plot it has been found 2.89 eV. The development of a PANI@ZnO–SiO2 is a new way to achieve better adsorption efficacy for Congo Red (CR) and Methylene Blue (MB) dyes in aqueous solutions due to the engineered excellent porous structure, which was 83.82 and 71.19 mg.g− 1, respectively. Moreover, this work reports also an extensive study of the effect of the SiO2 on the electrochemical performance of hybrid material based on ZnO and PANI employing cyclic voltammetry. It was found that the perfect stability, which can be sustained during a longtime of the galvanostatic charge-discharge (GCD) operation. The results reveal a superior cycling stability, with 90.1% capacitance retention after 1500 cycles.

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“…Metal nanoparticles (NPs) are mainly composed of Au, Ag, Cu, or other metal atoms, − with organic molecules as the ligands. The luminescence properties of metal NPs are closely related to their size and surrounding chemical environment, such as substances, surface ligands, etc., − which provide more possibilities to regulate their properties. Due to their unique physical and chemical properties, metal NPs have been used in the fields of ion detection, electrochemical catalysis, and biomarkers .…”

Section: Introductionmentioning

confidence: 99%

Organic-Phase Synthesis of Blue Emission Copper Nanoparticles for Light-Emitting Diodes

Zhang

Duan

Tan

et al. 2022

ACS Appl. Nano Mater.

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Copper nanoparticles (Cu NPs) are affordable, heavy metal-free materials with tunable emission wavelength, which could provide versatile applications in the fields of catalysis, photoluminescence, and biomedicine. In contrast to conventional Cu NPs in the aqueous phase, organic-phase Cu NPs with enhanced emission properties are needed to expand the range of applications in optoelectronic devices. Herein, organic-soluble Cu NPs were synthesized for the first time by reducing Cu 2+ to Cu NPs using tris(dimethylamino)phosphine [(DMA) 3 P] as the reducing agent. The quantum yield (QY) of the synthesized Cu NPs was further enhanced to 32% by introducing a In 3+ cation to passivate the surface defects. Due to the orthogonal ligand of Cu NPs without interfering with other layers in light-emitting diodes (LEDs), the first blue Cu NP LED with an external quantum efficiency (EQE) of 0.14% was achieved.

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Dramatic enhancement in adsorption of congo red dye in polymer-nanoparticle composite of polyaniline-zinc titanate

Cited by 82 publications

References 66 publications

Adsorption of organic dyes on macroporous melamine sponge incorporating conducting polypyrrole nanotubes

Adsorption of organic dyes on macroporous melamine sponge incorporating conducting polypyrrole nanotubes

Development and Characterization of Novel Hybrid Materials Formed from ZnO-SiO2-Modified and Polyaniline for Organic Dyes Adsorption and Electrochemical Supercapacitor Applications

Organic-Phase Synthesis of Blue Emission Copper Nanoparticles for Light-Emitting Diodes

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