A series of CuO-ZnO-Al2O3 nanoparticles over HZSM-5 were successfully prepared using different methods of batch co-precipitation, semibatch co-precipitation and combined co-precipitation-ultrasound. Nitrates of copper, zinc and aluminum were used as precursors, while Na-ZSM-5 was employed as composite support and sodium carbonate was used as precipitant agent. The effects of preparation methods...

The objective of the this study was to compare concentrations of nanosized TiO2 at 0, 5, 20, 40, 60 and 80 mg L(-1) with bulk TiO2 for phytotoxic and stimulatory effects on fennel seed germination and early growth stage. After 14 d of seed incubation, germination percentage highly improved following exposure to 60 ppm nanosized TiO2. Similar positive effects occurred in terms of shoot dry weigh...

Specially engineered drug particles can solve solubility and formulation problems, which are major challenges for the pharmaceutical industry. Particle size reduction of poorly water soluble drugs results in increased dissolution rate and higher bioavailability or better processability as demonstrated in previous studies [1, 2]. High-pressure homogenization can be used to decrease particle size...

Impact of agglomeration state of gold particles on pulmonary toxicity Nanoparticle (NP) toxicity testing comes with many challenges. One of them is agglomeration/aggregation of nanoparticles in physiological media. In this study, we address the effect of agglomerated versus single particle suspensions of nanosized and submicronsized gold on the inflammatory response in the lung. Single nanopart...

The purpose of this work was to explore the particle size reduction effect of carvedilol on dissolution and absorption. Three suspensions containing different sized particles were prepared by antisolvent precipitation method or in combination with an ultrasonication process. The suspensions were characterized for particle size, surface morphology, and crystalline state. The crystalline form of ...

Nb-doped SrTiO3 ceramics doped with the surface modification of nanosized titania was prepared via liquid phase deposition approach and subsequent sintered in an Ar atmosphere. The surface modification of nanosized titania significantly improved the ratio of the electrical conductivity to thermal conductivity of SrTiO3 ceramic doped with Nb, and has little impact on the Seebeck coefficient, thu...

Common materials acquire new properties when manufactured in the nanoscale. The same properties that are responsible for the exciting new possibilities are also a cause for some concern. The high surface area to volume ratio is a feature of engineered nanomaterials (ENM) that causes the amount of surface area to dominate their possible effects. In the case of carbon nanomaterials and other fibe...

Abstract Background Elemental sulfur (S 0 ) is a cost-efficient fertilizer and the least rapidly utilizable source of S for soil microorganisms plants. Its bacterial-mediated oxidation to sulfates dependent on particle size. Finely formulated (micronized, nanosized) exerts enhanced rate benefit due nutrient availability crop nutrition efficiency. Graphene oxide (GO) affects properties both nega...

cotton/polyester knitted fabrics as a major production of textile industry was treated with titanium dioxide nanosized particles. the treated fabric with nanosized tio2 became whiter with a good self-cleaning property. also the discoloration of reactive black 5 dye was studied and reported. the stabilization of tio2 on cotton/polyester knitted fabrics by citric acid (ca) with sodium hypophospha...

The objective of this paper was to gain an understanding of the mixing and characterization of nanosized powders. Three different nanosized material systems were selected based on their physical and chemical properties. Mixing experiments of the selected nanopowders were performed using a variety of environmentally friendly dry powder processing devices and the rapid expansion of supercritical ...