Nanotechnology Water Treatment Articles

  • Surface properties of nano–structural silicon–doped carbon films for biomedical applications

    Hydrogenated diamond–like carbon (DLC) containing Si films were synthesised using the radio frequency plasma enhanced chemical vapour deposition. The results show that all Si–doped DLC films exhibited a similar amorphous structure as non–doped DLC films. Doping Si caused graphitisation of C and reduced the surface hardness. Moreover, the surface roughness of the films decreased with the Si ...


    By Inderscience Publishers

  • Effect of a discrete heat source location on entropy generation in mixed convective cooling of a nanofluid inside the ventilated cavity

    In this paper, the effect of localised heat sources on entropy generation owing to mixed convection flow in a vented square cavity has been studied numerically. Laminar steady forced convection flow of copper–water nanofluid through the cavity has been affected by density variations as a result of heat input from a wall–mounted heat source. To investigate the effect of the heat source location, ...


    By Inderscience Publishers

  • The study on increase low permeability reservoir adsorption ability with nano–polymerisation emulsion

    Low permeability reservoirs always have some problems such as long–termed high injection pressure, low injection rate, the great variation of injection pressure during the water injection because of the compact and complicated structure. So it is necessary to reduce injection pressure and augment injection rate. Water–based nanometre polysilicon break through the limitation of organic scattered ...


    By Inderscience Publishers

  • On inherent irreversibility in Sakiadis flow of nanofluids

    The problem of entropy generation and inherent irreversibility in the steady boundary layer shear flow of nanofluids over a moving flat plate is studied numerically. The governing partial differential equations are transformed into ordinary differential equations using a similarity transformation and then solved numerically by a Runge–Kutta–Fehlberg method with the shooting technique. Two types ...


    By Inderscience Publishers

  • Exergy analysis of laminar forced convection of nanofluids through a helical coiled tube with uniform wall heat flux

    In this paper, entropy generation in nanofluids has been studied analytically. For this purpose, the fully developed laminar forced convection of Al2O3–water nanofluid through helical coiled tubes is investigated. The nanofluid has been considered to be a single–phase homogeneous fluid. Entropy generation rates due to heat transfer and ...


    By Inderscience Publishers

  • Oxidation of Langmuir–Blodgett films of monounsaturated lipids studied by atomic force microscopy

    In this work, we studied the stability in time of Langmuir–Blodgett films of POPC and OPPC, two unsaturated phospholipids with similar chains, differing by the relative position of these chains on the glycerol backbone. These films, transferred from the air–water interface onto freshly cleaved mica, were characterised by Atomic Force Microscopy (AFM) giving information on their topography at a ...


    By Inderscience Publishers

  • Improvement of a pesticide immunosensor performance using site–directed antibody immobilisation and carbon nanotubes

    The potential toxicity of pesticide residues in drinking water has meant a rigid regulation for the appearance of these pollutants. Thus, in this work, we developed a new immunosensor for atrazine detection. We focused on the optimisation of the antibody immobilisation method on sensor surface for the enhancement of the biosensor sensitivity. First, with site–directed immobilisation of rabbit ...


    By Inderscience Publishers

  • Study on synthesis and photocatalytic activity of novel visible light sensitive photocatalyst Ag
    3
    PO
    4

    Silver orthophosphate nanoparticles have been synthesised by precipitation of AgNO3 and H3PO4 in presence of oleylamine and other solvents like toluene, and ethanol at room temperature. Particle sizes of silver orthophosphate nanocrystals can be controlled by adjusting the amount of water. The ...


    By Inderscience Publishers

  • Growth of (002)–oriented ZnO thin films on largely lattice–mismatched substrates using atomic layer deposition

    ZnO thin films have been successfully deposited by Atomic Layer Deposition (ALD) using Diethylzinc (DEZn) and water (H2O) as precursors. The preferred orientations of the thin films were found to be strongly dependent on the deposition temperature. (100)–oriented ZnO thin films were grown in the temperature range of 155 to 220°C, whereas (002)–oriented ZnO thin films were ...


    By Inderscience Publishers

  • Size–controlled synthesis of β–Co(OH)
    2
    hexagonal nanoplates and their conversion into CoO octahedrons using cobalt naphthenate under solvothermal conditions

    β–Co(OH)2 hexagonal nanoplates with a size range from 300 nm to 3 μm have been synthesised successfully by a template and surfactant–free solvothermal route in a very simple system composed only of water, LiOH and cobalt naphthenate in xylene solution. This method is high–yield, simple and environmentally benign. The as–obtained Co(OH)2hexagonal nanoplates can ...


    By Inderscience Publishers

  • Morphological control of zinc oxide and application to cosmetics

    Spherical particles of zinc oxide of 300–2000 nm in diameter were synthesised by soft solution reactions using zinc nitrate, ethylene glycol, sodium hydroxide and triethanolamine as starting materials. After dissolving these compounds in water, the solution was heated at 90°C for 1 h to form almost mono–dispersed spherical zinc oxide particles. The particle size changed depending ...


    By Inderscience Publishers

  • Synthesis of ZnO whiskers via EDTA–assisted hydrothermal routes

    Uniform ZnO whiskers with a length of 3.5–4.0 μm and a diameter of 180 nm have been synthesised via the EDTA–assisted hydrothermal route, using ZnO nanoparticles as the raw material and NaOH solution as the reaction medium. In order to convert the ZnO nanoparticles to ZnO whiskers via the dissolution–hydrothermal precipitation route, ZnO nanoparticles were firstly dissolved ...


    By Inderscience Publishers

  • Physical methods in wastewater treatment

    Physical methods of wastewater treatment are useful in water purification and recycling. We have proposed the role of nanoparticle in combination with ultrasound. Ultrasound (US), nanoparticle (NP) or in combination (US + NP) may offer an attractive proposition in the area of water purification. Ultrasound irradiation applications is that acoustic cavitation can affect a number of mechanical, ...


    By Inderscience Publishers

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