Nanomaterials and Their Application

Bashir, Sajid; Liu, Jingbo

doi:10.1016/b978-0-12-801528-5.00001-4

Cited by 20 publications

(15 citation statements)

References 124 publications

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“…They can be of zero dimension (nanoparticles), one dimension (nanotubes, nanowires, and nanorods), or two dimensions (nanoplatelet, nanosheets, and nanofilms). Nanomaterials possess improved thermal, mechanical, physical, chemical, magnetic, electronic, and optical properties [21]. This is primarily due to their small sizes, which allow higher volume fractions at the surfaces and thus higher interaction areas [22].…”

Section: Introductionmentioning

confidence: 99%

A Review on the Corrosion Behaviour of Nanocoatings on Metallic Substrates

et al. 2019

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Growth in nanocoatings technology is moving towards implementing nanocoatings in many sectors of the industry due to their excellent abilities. Nanocoatings offer numerous advantages, including surface hardness, adhesive strength, long-term and/or high-temperature corrosion resistance, the enhancement of tribological properties, etc. In addition, nanocoatings can be applied in thinner and smoother thickness, which allows flexibility in equipment design, improved efficiency, lower fuel economy, lower carbon footprints, and lower maintenance and operating costs. Nanocoatings are utilised efficiently to reduce the effect of a corrosive environment. A nanocoating is a coating that either has constituents in the nanoscale, or is composed of layers that are less than 100 nm. The fine sizes of nanomaterials and the high density of their ground boundaries enable good adhesion and an excellent physical coverage of the coated surface. Yet, such fine properties might form active sites for corrosion attack. This paper reviews the corrosion behaviour of metallic, ceramic, and nanocomposite coatings on the surface of metallic substrates. It summarises the factors affecting the corrosion of these substrates, as well as the conditions where such coatings provided required protection.

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Section: Introductionmentioning

confidence: 99%

A Review on the Corrosion Behaviour of Nanocoatings on Metallic Substrates

et al. 2019

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“…Electroactive material properties such as size, contact surface area and crystallinity have a profound effect on the material performance in numerous applications especially those related to energy storage, catalysis and environment [1][2][3][4][5]. Therefore, more environmentally friendly, faster and energy-efficient synthesis methods for nanoparticle production are currently of interest; especially for transition metal hydroxide nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

“…1 . Only a limited number of Raman studies have been reported until now on the interlayer carbonate or hydroxide anion in hydrotalcite crystals.…”

mentioning

confidence: 99%

Electrochemical measurements of 1D/2D/3DNi-Co bi-phase mesoporous nanohybrids synthesized using free-template hydrothermal method

Guellati

Harat

Momodu

et al. 2018

Electrochimica Acta

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Graphical Abstract0 500 1000 1500 2000 65 Highlights  Ni/Co-precursor ratio effect on the template-free hydrothermal growth of carbonate and/or hydroxide nanocomposites.  Ni/Co-content ratio effect on electrochemical performance of Ni-Co based multiphase nanocomposites. 1D/2D/3D architecture microstructures of Ni-Co bi-phase nanohybrids as promising candidates for electrodes in supercapacitor application. AbstractIn this study, a facile and low cost free-template hydrothermal precipitation method was used to synthesize mesoporous Ni-Co based bimetallic carbonates (CO 3 ) 2and/or hydroxides (OH)micro/nanostructures with different morphologies (1D, 2D and 3D) based on variant stoichiometric compositions. The effect of the growth temperature, synthesis time as well as the Ni/Co-precursors ratio on the physico-chemical properties and faradic electrochemical behavior of these products was investigated. The as-obtained bi-phase nanohybrids were characterized using XRD, FTIR, Raman spectroscopy, TGA, FE-SEM and BET analysis. The textural analysis results confirmed the presence of mesoporous products with a BET-SSA arround 50 m 2 .g -1 and a corresponding pore volume of 0.52 cm 3 .g -1 for the 3D urchin-like structure while a BET-SSA of 47.14 m 2 .g -1 (with 0.31 cm 3 .g -1 pore volume) was obtained for the 2D nanoflakes structure.The CV, CD and EIS electrochemical measurements were performed in a 6.0 M KOH aqueous electrolyte. The excellent electrochemical performance recorded could be ascribed to the optimized composition of Ni-Co LDH (or α-Ni(OH) 2 ) with Co 2 (OH) 3 Cl and their unique hierarchical mesoporous nanoflake and urchin-like architectures. In addition, an exceptionally notable specific capacitance (capacity) of 1700 F.g -1 (161 C.g -1 ) and 1379 F.g -1 (192 C.g -1 )was obtained for both structures, respectively, at 5 mV.s -1 scan rate (0.5 A.g -1 gravimetric current density) compared with their better monohydroxides synthesized in same conditions 351 F.g -1 (90 C.g -1 ) for Ni and 216 F.g -1 (21.5 C.g -1 ) for Co. The electrode also showed good cyclic stability of ~98% after 2000 charge-discharge cycles at 30 A.g -1 making them potential materials suitable for fabricating energy storage devices.

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“…Nanomaterials have revolutionised the materials research and their applications in the recent past, owing to their plethora of unique properties arising from large surface to volume ratio and quantum confinement effect [1][2][3] . Nanomaterials have found their effective utilisation in sensors, catalysis, structural components, data storage, biomedical devices, electronics alongwith many other upcoming applications [4][5][6][7] .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Silver Nanostructures and their Application in Highly Sensitive SERS Sensors

Srivastava¹,

Awasthi²,

Kanojia³

et al. 2017

Def. Sc. Jl.

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A comparison of Surface Enhanced Raman Scattering (SERS) activity of chemically synthesised silver nanostructures with different shapes is reported. The silver nanostructures of cubical, prism and wire like morphology were synthesised using chemical synthesis route and utilised as SERS substrates. The sensors were fabricated by spin coating these materials over a Silicon or glass substrate. The fabricated sensors were used to analyse response with two different analytes, 4-Mercaptobenzoic acid and Rhodamine 6G under different concentrations. The signal enhancement was compared with a silver coated thin film over glass substrate and it was observed that the enhancement of the order of 103 is achieved. The nanowire performed better than the other forms of silver and gave a higher signal enhancement for all the analytes as compared to other nanostructures. The fabricated sensors may be useful for various applications including explosive and biowarfare agent detection.

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Nanomaterials and Their Application

Cited by 20 publications

References 124 publications

A Review on the Corrosion Behaviour of Nanocoatings on Metallic Substrates

A Review on the Corrosion Behaviour of Nanocoatings on Metallic Substrates

Electrochemical measurements of 1D/2D/3DNi-Co bi-phase mesoporous nanohybrids synthesized using free-template hydrothermal method

Synthesis of Silver Nanostructures and their Application in Highly Sensitive SERS Sensors

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