Materials Literature
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Abstract: Bacillus stearothermophilus culture supernatant was used for preparation of silver nanoparticles (AgNPs) by reduction of silver ions via nitrate reductase enzyme which was optimized using Response Surface Methodology (RSM).The optimized conditions for nitrate reductase activity were as follows; medium contai…
Biodegradable implants are in the focus of recent research approaches in the medical engineering sector for the treatment of many different defects. In comparison to permanent implants the risk of inflammatory reactions is significantly reduced and no foreign material is left in the body using degradable materials. Du…
The effect of changes in morphology and surface hydroxyl species upon thermal treatment of zirconia on the oxidation activity of Au/ZrO2 catalyst was studied. We observed using transmission Fourier transform infrared (FTIR) spectroscopy progressive changes in the presence of monodentate (type I), bidentate (type II) a…
We synthesize and characterize two types of poly(N-hydroxyethyl acrylamide) (polyHEAA)-based nanogels: antifouling poly(2-(methacryloyloxy) ethyl trimethyl ammonium-g-N-hydroxyethyl acrylamide) (polyTM-g-HEAA) by a new two-step polymerization method of inverse microemulsion ATRP and surface-initiated atom transfer rad…
The adsorption and diffusion of lithium on silicene are studied by using the first-principles method. It is found that the adsorption energy of Li adsorbing on silicene is significantly larger than that of Li adsorbing on graphene. With the increasing concentration of adsorbed Li atoms, the adsorption energy also incr…
We demonstrate a facile controlling of the optical and colorimetric properties of a donor-acceptor conjugated polymer simply by varying the mix ratio of two precursors in a precursor blend. The conversion of a precursor blend results in an entirely new donor-acceptor polymer, distinct from the conjugated polymer of ea…
We present herein activated carbon/carbon nano tube (AC/CNT)) composite electrodes for non-aqueous, high voltage electrical double layer capacitors (EDLC). Mixtures comprising CNT and polymeric species were carbonized and further activated, thus forming matrices with unique hierarchical porous structure, with both mic…
Currently, nanometal oxides are used extensively in different industries such as medicine, cosmetics and food. The increased consumption of nanoparticles (NPs) leads the necessity to understand the fate of the nanoparticles in the environment. The present study focused on the ecotoxicological behaviour of bulk and nan…
Janus-like emulsions stabilized by OH(-) and polydopamine (PDA) particles were realized. The OH(-) and particle occupied areas on emulsion droplet surfaces are spatially separated. Via controlling the pH and ionic strength, the coalescence of Janus-like emulsion droplets could be manipulated.
Organoboroxine chemistry has recently received much attention \n\tbecause the boroxine formation reaction is a powerful tool for the construction of \n\torganized architectures. The reversible nature of this reaction may result in new \n\tmaterials that possess unprecedented levels of structural organization due to \n…
Novel bionanocomposite ionogels consisting of an ionic liquid (IL) 1-ethyl-3-methylimidazolium acetate (EMIMAc), microcrystalline cellulose (MCC) and nano-silica (nano-SiO2) particles with high tensile strength and high ionic conductivity have been successfully prepared. Dynamic light scattering (DLS) and transmission…
Calcium hydroxide nanoparticles in aqueous suspensions (also called nanolime) were successfully employed in Cultural Heritage conservation thanks to the ability of favoring readhesion of the pictorial layer on original carbonatic substrates or allowing to a better superficial cohesion and protection of treated stones.…
Highly luminescent ZnO nanoparticles have been synthesized through a co-precipitation method, starting from a solution of zinc acetate in methanol and precipitating the oxide phase in basic media in the presence of variable amounts of aminopropyltriethoxy silane (APTS). The adopted conditions led to the condensation b…
In this study, we investigated Ge2Sb2Te5 (GST225) amorphous thin films doped with Bi, Sn and In, using Raman scattering spectroscopy, to obtain information about structural changes after doping. Such impurities as Bi and Sn were chosen due to their isomorphism with one of the main components; indium is an active dopan…
Cerium oxide nanoparticles or nanoceria are emerging as a new and promising class of nanoparticle technology for biomedical applications. The safe implementation of these particles in clinical applications requires evaluation of their redox properties and reactivity that might cause neurotoxic effects by interacting w…
A general method for the formation of a broad family of silicon nanotube arrays (Si NTAs) relevant to diverse fields--ranging from energy storage to therapeutic platforms--is described. Such nanotubes demonstrate a thickness-dependent dissolution behavior important to its potential use in drug delivery. Under selected…
In this study, to obtain polycarbonate urethanes (PCU) with good mechanical properties and biostability, a series of polycarbonate urethanes containing various low levels of polydimethylsiloxane (PDMS) were synthesized via a two-step bulk polymerization using 4,4′-methylenediphenyl diisocyanate (MDI) and 1,4-butanedio…
We report a ratiometric temperature imaging method based on Mn luminescence from Mn-doped CdS-ZnS nanocrystals (NCs) with controlled doping location, which is designed to exhibit strong temperature dependence of the spectral lineshape while being insensitive to the surrounding chemical environment. Ratiometric thermom…
A new fluorinated co-polyarylate (P) was synthesized by interfacial polymerization of 1,1-bis(4-hydroxyphenyl)-1-phenyl-2,2,2-trifluoroethane (BPAPF) and diphenolic acid (DPA) with isophthaloyl chloride (IPC). P1–P3, containing different concentrations of tricyanofuran (TCF) accepter chromophores, were obtained by the…
In this work, we performed comparative studies of the effect of surface preparation of Ti6Al4V and Ti6Al7Nb biomedical alloys and the influence of endothelial cells on their corrosion behaviour in PBS (Phosphate Buffered Saline). Two different methods of surface modification were applied - polishing and sandblasting.…