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The aim of this study was to prepare a stable nanostructured lipid carrier (NLC) with biocompatible lipids and surfactants (Pluronic F68 and Cremophor EL) by high-pressure homogenization (HPH). Surface tension measurements were used to choose the suitable ratio between Pluronic F68 and Cremophor EL. Hydrophobic anticancer drug docetaxel (DTX) was used as an active pharmaceutical ingredient (API)....
A facile strategy for the preparation of water soluble gold nanoparticles functionalized by dithiocarbamate derivative of calixarene and application of this material as colorimetric sensor for metal ions in aqueous media is reported. This material selectively detects Hg 2+ in aqueous media in presence of a large number of metal ions with a sharp colour change, detectable by naked eyes. No...
The present invention explores the antibacterial efficacy of ultra stable gold nanoparticles (GNPs), embedded polyvinyl alcohol (PVA) hybrid membranes. A green approach to synthesize the ultra stable GNP's using Phyllanthus emblica (amla) extract was adapted. These GNP's were impregnated in PVA matrix to fabricate hybrid PVA-nanogold membranes by solvent casting technique. The facile green synthesis...
This paper reports on preparation methods for TiO 2 -supported Pt catalysts (Pt/TiO 2 ) using colloidal DNA-protected Pt particles. Pt nanoparticles with the average size of 1.4nm were prepared by reduction of H 2 PtCl 6 with NaBH 4 in aqueous solution in the presence of salmon sperm deoxyribonucleic acid (DNA). The Pt particles were deposited on TiO 2 ...
Microbial fuel cells (MFCs) are bioelectronics devices that can directly convert the chemical energy from organic matter to electricity by the catalytic activity of living microorganisms. The performance of the MFCs could be influenced by many factors, such as anode materials and surface structure. Based on our previous work, in this paper, graphene (GE) nanosheets and poly(allylamine hydrochloride)...
Efficient, scalable, and cost-effective self-assembly of Au nanoparticles (NPs) into close-packed arrays on the surfaces of thiol-functionalized resin spheres under mild conditions was demonstrated. The resulting Au NPs–resin spheres possessed a structure in which the densely packed Au NPs monolayer and the resin bead are the shell and the core, respectively. Each Au NPs–resin sphere could be used...
Freshly formed metal oxide suspensions usually have high reactivity and are easy to achieve in-situ preparation and dosing in water treatment. In this study, a freshly formed Fe–Mn binary oxide (FMBO) suspension was prepared for phosphate removal using simultaneous oxidation and coprecipitation method. FMBO was characterized by SEM, TEM, XRD and zeta potential and compared with the mixture of ferric...
Flocculation is one of the most widely applied techniques in water treatment. Polysaccharide-based flocculants have been paid much attention for their eco-friendliness recently. However, precise molecular structure control is greatly important in improving their flocculation performance. In this work, a series of amphoteric starch-based flocculants with different substitution degrees of functional...
Silica xerogel and its PEG assisted derivatives were prepared by sol–gel method for controlled release of andrographolide. In vitro and in vivo release of andrographolide from the nano porous silica as well as PEG modified silica matrix were studied. Drug release from the matrix increased with increasing percentage of PEG and followed a biphasic pattern. The in vitro release profile followed zero...
The paper discusses the synthesis, characterization and microbiological testing of a nanostructured nickel ferrite embedded within polyacrylamide based hydrogels matrix. Nickel ferrite was obtained by the sol–gel autocombustion method using citric acid as chelating/fuel agent, while the hydrogels and the ferrite–hydrogel composites were prepared by an original polymerization-crosslinking simultaneous...
In this study, electro-optics is applied for the first time for investigation of suspension stability and electrical properties of colloidal particles covered with hybrid multilayer film. The polyelectrolyte/nanoparticle hybrid film is prepared onto ellipsoidal β-FeOOH particles through a subsequent layer-by-layer adsorption of anionic poly(sodium 4-styrene sulfonate), cationic poly(diallyldimethylammonium...
A new kind of polymeric complex adsorbent for removing cyanide in aqueous solution was prepared by coordination reaction of ethylenediaminetetraacetic acid chelating resin based on macroporous polystyrene (PS-EDTA resin) and copper(II). The resulting adsorbents were characterized by means of FT-IR and Raman spectra and were employed in the purification treatment of wastewater containing cyanide. Meanwhile,...
Structural and mechanical properties of molecularly thick polysiloxane membranes were studied on different liquid subphases to investigate the impact of the subphase's pH value on the cross-linking process. The lateral structure of these films was studied in-situ by grazing incidence diffraction while torsions pendulum experiments reveal the response of the system to mechanical stress. The results...
Wettability and rheological characteristics of highly hydrophobic organic pigments were determined in the absence and presence of surfactants. Two widely used pigments, carbon black (CB) and copper phthalocyanine blue (CuPc), were selected as model pigments. As wetting and dispersing agents, a range of non-ionic nonylphenol ethoxylated (NPE) surfactants with varying hydrophilic chain length was used...
Wetting of smooth, chemically heterogeneous surfaces was studied experimentally and computationally during the advancing and receding processes. The motion of the triple line is known to play an important role in determining the macroscopic contact angle due to its ability to be pinned at various defect locations on real surfaces. This effect is known to cause contact angle hysteresis. The shape of...
The effect of erythorbic acid (EA) on the aqueous formation of CdS quantum dots (QDs) at room temperature was explored in this work. Without N 2 protection, CdS QDs were synthesized in water by a one-pot non-hot-injection approach at room temperature. The Cd and S sources were CdCl 2 and Na 2 S, respectively, together with 3-mercapto-propionic acid (MPA) as the passivating...
In this manuscript we report pH induced micellar transition in aqueous solution of cetyltrimethylammonium bromide (CTAB) in the presence of three weakly polar aromatic additives viz. p-toluic acid, p-cresol and p-toluidine scrutinized by viscosity, nuclear magnetic resonance (NMR), dynamic light scattering (DLS) and small-angle neutron scattering (SANS) measurements. Interaction between these additives...
The present work aimed characterizing in a systematic way the surface of metakaolinitic materials produced by calcination of a kaolinitic clay at different temperatures and to study the effect of grinding on the surface properties of metakaolinitic materials. Using X-ray photoelectron spectroscopy, it was found for all materials a Si/Al atomic ratio close to 1, confirming the presence of the 1:1 clay...
Photoluminescent coatings were designed by dispersing SrAl 2 O 4 :Eu 2+ , Dy 3+ photoluminescent pigments in a silicone epoxy hybrid binder hardened with a bifunctional silane which possesses a reactive primary amino and hydrolysable ethoxysilyl groups. The resulting emulsions were deposited by an automatic drawdown applicator on AISI 304 stainless steel flat substrates...
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