Preparation and analysis of multi-layered hybrid nanostructures

Khobragade, Prashant S.; Hansora, Dharmesh; Naik, Jitendra; Njuguna, James; Mishra, Satyendra

doi:10.1016/j.clay.2016.08.022

Cited by 13 publications

(17 citation statements)

References 49 publications

(66 reference statements)

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“…a). The peaks observed at 1,720, 1,624, and 1,043 cm −1 correspond to C=O stretching, unoxidized sp 2 C‐C bonds, skeletal C‐O stretching respectively, confirming the oxidation of GO sheet . For PANI, the absorption peaks are observed at 1,546, 1,465, 1,286, and 1,230 cm −1 corresponding to the C=C quinoid, C=C benzenoid, C‐N stretching mode of the aromatic amine, C‐N‐C stretching vibration in the polaron structure , respectively as shown in Fig…”

Section: Resultsmentioning

confidence: 78%

Graphene oxide‐wrapped polyaniline nanorods for supercapacitor applications

et al. 2019

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This study depicts the chemical synthesis and supercapacitive behavior of nanocomposites of Polyaniline nanorods wrap with graphene oxide (PANI/GO). Synthesis of PANI/GO nanocomposites was carried out by in situ oxidative solution polymerization of aniline in the presence of Nitric acid, acting as a proton donor. The nanocomposites were characterized by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy, X‐ray diffraction, Raman spectroscopy, thermal gravimetric analysis, contact angle analysis, cyclic voltammetry, galvanostatic charge–discharge test and electrochemical impedance spectroscopy. FESEM revealed the formation of PANI nanorods with the aspect ratio in the range of 3–5, while TEM revealed the wrapping of GO sheets on the PANI nanorods. Thermal stability showed decreasing trend while surface hydrophobicity was of increasing trend with GO concentration due to partial reduction of GO, as observed in Raman spectra. PANI/10 wt% GO (PANI/GO10) nanocomposite electrode showed highest specific capacitance of 276 F/g as compared with 180 F/g of Pure PANI. Cyclic stability of 80% was retained for PANI/GO10 nanocomposites after 500 cycles at a current density of 0.5A/g as compared with unstable PANI. The enhanced specific capacitance and good cyclic stability with increasing GO concentration revealed the good potential of PANI/GO nanocomposites for supercapacitor applications. POLYM. COMPOS., 40:E1716–E1724, 2019. © 2019 Society of Plastics Engineers

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Section: Resultsmentioning

confidence: 78%

Graphene oxide‐wrapped polyaniline nanorods for supercapacitor applications

et al. 2019

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“…(b)) indicating the presence of surface OH stretching due to the vibrations of the HOH groups of water. The other peaks correspond to oxygen functional groups, such as carboxyl (CO) stretching of COOH groups (1725 cm −1 ), aromatic (CC) stretching (1615 cm −1 ), epoxy (CO) stretching (1218 cm −1 ) and alkoxy (COH) stretching (1043 cm −1 ) . In the FTIR spectrum of nPS, the absorption bands at 3027, 2885, 1491, 1369 and 756 cm −1 reveal the stretching of the CH bond in the phenyl ring, asymmetric stretching of CH bond, symmetric stretching CH bond and rocking of CH bond in the aromatic phenyl ring of nPS, while the peaks at 905 and 840 cm −1 are attributed to the amorphous portions of nPS (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Hand lay‐up epoxy matrix and hardener, grade names Lapox L‐12 and K‐6, were procured from the polymer division of Atul Limited, Mumbai, India. GO sheets, of an average of 50 nm in thickness and up to certain micrometres in length, were synthesized using a modified Hummers method . Styrene (St) as monomer, ammonium persulfate (APS) as initiator and sodium dodecylsulfate (SDS) as surfactant were procured from Sigma Aldrich, Mumbai, India.…”

Section: Methodsmentioning

confidence: 99%

“…Therefore, graphene is a basic building block of graphitic materials having all dimensionalities and used in the synthesis of a variety of composite blend films and polymer nanocomposites. However, graphene sheets have a high specific surface area, and tend to form irreversible agglomerates or even restack to form graphite through van der Waals interactions . So, many scientists have prepared hybrid nanostructures of GO with different organic and inorganic materials to overcome this problem of GO.…”

Section: Introductionmentioning

confidence: 99%

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Physico‐mechanical properties of nano‐polystyrene‐decorated graphene oxide–epoxy composites

Khobragade

Hansora

Naik

et al. 2017

Polymer International

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Nano‐polystyrene (nPS)‐decorated graphene oxide (GO) hybrid nanostructures were successfully synthesized using stepwise microemulsion polymerization, and characterized using Fourier transform infrared (FTIR) spectroscopy, X‐ray diffraction (XRD), field‐emission scanning electron microscopy and transmission electron microscopy. XRD and FTIR spectra revealed the existence of a strong interaction between nPS and GO, which implied that the polymer chains were successfully grafted onto the surface of the GO. The nPS‐decorated GO hybrid nanostructures were compounded with epoxy using a hand lay‐up technique, and the effect of the nPS‐decorated GO on the mechanical, thermal and surface morphological properties of the epoxy matrix was investigated using a universal tensile machine, Izod impact tester, thermogravimetric analysis and contact angle measurements with a goniometer. It was observed that in the epoxy matrix, GO improved the compatibility. © 2017 Society of Chemical Industry

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“…Graphene has incredible properties as the lightest and strongest nanomaterial, compared with its ability to conduct heat and electricity better than other nanomaterials. Because of their excellent properties, it can be included into a large number of applications . Graphene has low mass density as compared with the classical fillers and also have high electrical and thermal conductivity, due to the sp 2 hybridized carbon atoms in the monolayer graphenes (Figure ).…”

Section: Properties Of Graphene and Their Applicationmentioning

confidence: 99%

A review on the mechanical, electrical and EMI shielding properties of carbon nanotubes and graphene reinforced polycarbonate nanocomposites

Bagotia

Choudhary

Sharma

2018

Polymers for Advanced Techs

112

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Recently, it has been found that carbon nanotubes (CNTs) and graphene could prove to be the most promising carbonaceous fillers in polymers nanocomposites field because of their better structural and functional properties. Their uniform dispersion in polymer matrix leads to significant improvements in their several properties. This paper reviews the effect of nanofillers, ie, CNTs, derivatized CNTs, and graphene on the polycarbonate nanocomposite and its application in aerospace, automobile, sports, electronic sectors, and various industries. The comparative analysis of carbon‐based fillers on the different properties of polycarbonate nanocomposites is also included.

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Preparation and analysis of multi-layered hybrid nanostructures

Cited by 13 publications

References 49 publications

Graphene oxide‐wrapped polyaniline nanorods for supercapacitor applications

Graphene oxide‐wrapped polyaniline nanorods for supercapacitor applications

Physico‐mechanical properties of nano‐polystyrene‐decorated graphene oxide–epoxy composites

A review on the mechanical, electrical and EMI shielding properties of carbon nanotubes and graphene reinforced polycarbonate nanocomposites

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