Polyaniline-metal oxide-nano-composite as a nano-electronics, opto-electronics, heat resistance and anticorrosive material

Kumar, Harish; Boora, Anurag; Yadav, Ankita; Rajni, Rajni; Rahul, .

doi:10.1016/j.rechem.2020.100046

Cited by 41 publications

(25 citation statements)

References 24 publications

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“…In continuation to our earlier work [10][11][12][13], here, we have reported the effect of cobalt NPs on the structural and optical properties of Zn1-xCoxO NCs. The Zn1-xCoxO (x = 0.3, 0.5, 0.7) NCs were synthesized by sol-gel technique at 80 C and annealed at temperatures 400 o C for 6 h.…”

Section: Introductionsupporting

confidence: 56%

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Impact of Cobalt Doping on Structural, Electrical, Magnetic and Optical Properties of Zn1-xCoxO Nanocomposites: Experimental and Theoretical Study

Kumar¹,

Singh

Pal

2021

Preprint

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Doping of nanocomposites (NCs) with different metal oxide leads to a significant change in its structural, optical, electrical, mechanical, thermal, catalytic, and magnetic properties. The effect of the addition of CoO nanoparticles (NPs) on the structural, optical, electrical, and magnetic properties of Zn/CoO NCs have been investigated in detail. Zn1-xCoxO NCs were synthesized by the sol-gel method followed by annealing at 4000C. The NCs were characterized by UV-visible, XRD, FTIR, TEM, and vibrating sample magnetometer (VSM) techniques. The structural and surface study was performed by X-ray diffraction and TEM techniques which shows spherical and cubical NCs with an average size of 25-55 nm. Computational study (DMol3, CASTEP, Forcite, and Reflex) was used to study the electronic and optical properties of metal NPs. The Co2+ ions replace Zn2+ ions in the ZnO lattice resulting a change in its structure from Wurtzite (ZnO NPs) to cubic Zn1-xCoxO NCs. The lattice parameters, strain, and dislocation density were found to decrease with an increase in CoO concentration in Zn1-xCoxO NCs. The saturation magnetization, retentivity, and coercivity were found to be lesser in Zn1-xCoxO NCs. The synthesized cobalt doped Zn1-xCoxO NCs can act as an efficient material for spintronic applications.

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Section: Introductionsupporting

confidence: 56%

“…The theoretical study was carried out to investigate band structure, density of states (DOS), XRD (theoretical), Radial Distribution Function (RDF), and Brillouin zone paths for CoO and ZnO NPs (Figs. [11][12]. Band structure shows the dependency of electronic states on the kvector and high symmetry vectors of the Brillouin zone.…”

Section: Computational Studymentioning

confidence: 99%

Impact of Cobalt Doping on Structural, Electrical, Magnetic and Optical Properties of Zn1-xCoxO Nanocomposites: Experimental and Theoretical Study

Kumar¹,

Singh

Pal

2021

Preprint

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“…Four series of NCs of alumina (Al2O3), zinc oxide (ZnO), titanium dioxide (TiO2), and copper oxide (CuO) were synthesized by the sol-gel method [10,11]. 0.5 M solution of Al2O3, ZnO, TiO2, and CuO were prepared in 500 mL double distilled water (conductivity 0.5 µmhos/cm).…”

Section: Step 1 Synthesis Of Intermetallic Compounds (Imcs)mentioning

confidence: 99%

Experimental and Theoretical Study of Electrical Conductivity of Intermetallic and Nanocomposites: Subzero Temperature Superconductor

Kumar¹,

Bhateria²,

Singh³

et al. 2021

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A comparative study of the electrical conductivity of intermetallic and corresponding nanocomposites at room and the subzero temperature was carried out by experimental and theoretical techniques. Four series of intermetallic compounds (IMCs) and nanocomposites (NCs) of Al2O3, ZnO, TiO2, and CuO were synthesized by high-temperature reactive synthesis and sol-gel technique, respectively. Heat treatment of NCs was carried out at 100, 200, 300, and 400°C. Characterization of NCs was carried out by UV-visible, FTIR, FE-SEM, and XRD techniques. Computational study (DMol3, CASTEP, Forcite, Reflex, and VAMP) was carried out to study the electronic and optical properties of metal nanoparticles. The influence of heat treatment, the addition of coinage metal and ferromagnetic material, effect of a decrease in temperature on the electrical conductivity of IMCs and NCs were thoroughly investigated. The electrical conductivity of NCs was found to increase with an increase in heat treatment temperature (up to 400°C) and with the decrease in temperature (-70°C). The addition of Hematite, α-Fe2O3, and coinage metal do not significantly increase the electrical conductivity of NCs at room temperature. The electrical conductivity of NCs was found to be higher than IMCs and coinage metals. Hence, synthesized NCs can have a large number of potential applications in nanowires, quantum dots, and nano cables with very low resistivity (10-6 ΩWm-1).

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“…Nanotechnology is a multidisciplinary research area that has opened up revolutionary development in the scientific world as scientists can independently control and manipulate atoms as well as molecules [ 1 ]. Metal and metal oxide nanoparticles are an emerging group of nanomaterials due to their unique physicochemical characteristics and vast application in various scientific fields, including biomedicine [ 2 ], tissue engineering [ 3 ], biosensing technology [ 4 ], food packaging [ 5 ], catalysis [ 6 ], nanoelectronics [ 7 ], nanorobotics [ 8 ], and environmental sciences [ 9 ]. Recently, aluminum oxide nanostructures have been a subject of considerable research interest to the scientific community due to their unique optical, electronic, piezoelectric, and biomedical properties [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Grapefruit Extract-Mediated Fabrication of Photosensitive Aluminum Oxide Nanoparticle and Their Antioxidant and Anti-Inflammatory Potential

et al. 2022

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Aluminum oxide nanoparticles (Al2O3 NPs) were synthesized using a simple, eco-friendly green synthesis approach in an alkaline medium from the extract of grapefruit peel waste. The pre-synthesized, nano-crystalline Al2O3 NPs were characterized by using spectroscopic (UV–vis, FTIR, XRD, and EDX) and microscopic (SEM and TEM) techniques. The formed Al2O3 NPs exhibited a pronounced absorption peak at 278 nm in the UV–vis spectrum. The average particle size of the as-prepared Al2O3 NPs was evaluated to be 57.34 nm, and the atomic percentages of O and Al were found to be 54.58 and 45.54, respectively. The fabricated Al2O3 NPs were evaluated for antioxidant, anti-inflammatory, and immunomodulatory properties. The Al2O3 NPs showed strong antioxidant potential towards all the four tested assays. The anti-inflammatory and immunomodulatory potential of Al2O3 NPs was investigated by measuring the production of nitric oxide and superoxide anion (O2•−), as well as proinflammatory cytokines tumour necrosis factor (TNF-α, IL-6) and inhibition of nuclear factor kappa B (NF- κB). The results revealed that Al2O3 NPs inhibited the production of O2•− (99.4%) at 100 μg mL−1 concentrations and intracellular NO•− (55%), proinflammatory cytokines IL-6 (83.3%), and TNF-α (87.9%) at 50 μg mL−1 concentrations, respectively. Additionally, the Al2O3 NPs inhibited 41.8% of nuclear factor kappa B at 20 μg mL−1 concentrations. Overall, the outcomes of current research studies indicated that Al2O3 NPs possess anti-inflammatory and immunomodulatory properties and could be used to treat chronic and acute anti-inflammatory conditions.

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Polyaniline-metal oxide-nano-composite as a nano-electronics, opto-electronics, heat resistance and anticorrosive material

Cited by 41 publications

References 24 publications

Impact of Cobalt Doping on Structural, Electrical, Magnetic and Optical Properties of Zn1-xCoxO Nanocomposites: Experimental and Theoretical Study

Impact of Cobalt Doping on Structural, Electrical, Magnetic and Optical Properties of Zn1-xCoxO Nanocomposites: Experimental and Theoretical Study

Experimental and Theoretical Study of Electrical Conductivity of Intermetallic and Nanocomposites: Subzero Temperature Superconductor

Grapefruit Extract-Mediated Fabrication of Photosensitive Aluminum Oxide Nanoparticle and Their Antioxidant and Anti-Inflammatory Potential

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