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Zinc oxide (ZnO) hollow spheres with defined morphology and micro-/nanostructure are prepared by a hydrothermal synthesis approach. The materials possess fine-leaved structures at their particle surface (nanowall hollow micro spheres, NHMs). Morphology control is achieved by citric acid used as an additive in variable relative quantities during the synthesis. The structure formation is studied by various time-dependent ex-situ methods, such as scanning electron microscopy (SEM), X-ray diffraction (XRD), and Raman spectroscopy. The fine-leaved surface structure is characterized by high-resolution transmission electron microscopy techniques (HRTEM, STEM), using a high-angle annular dark field (HAADF) detector, as well as by differential phase contrast analysis. In-depth structural characterization of the nanowalls by drop-by-drop ex-situ FE-SEM analysis provides insight into possible structure formation mechanisms. Further investigation addresses the thermal stability of the particle morphology and the enhancement of the surface-to-volume ratio by heat treatment (examined by N2 physisorption).
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The preparation of hollow metal-organic framework (MOF) structures through a stepped dissolution-regrowth method avoids the troublesome template removal and etching process, although it still faces se...
Construction a sensor to accurately detect dopamine (DA) and hydrogen peroxide (HO) is meaningful due to their close relation to the health of organisms. In this work, one-step hydrothermal method was...
Nanostructured anatase TiO2 undergoes pressure-induced phase transformation, and the transformation sequence is significantly different from the bulk counterpart. The size and the morphology are found...
Fabrication of molybdenum and tungsten oxide, sulfide, phosphide (MoWO/MoWS/MoWP) porous hollow nano-octahedrons from metal-organic frameworks templates as efficient hydrogen evolution reaction electrocatalysts.
A metal-organic frameworks-derived sulfuration and phosphorization method is developed for constructing a hydrogen evolution reaction (HER) electrocatalyst (MoWOSP@C), which is composed of MoWO nanopa...
The interfacial spreading and exfoliation of graphene was used to create low-density, hollow microspheres defined by a thin shell of graphene. The spheres were templated by a thermodynamically driven ...
this is a randomized controlled clinical trial, evaluating the antibacterial effect of laser diode and zinc oxide nano-particles when used as cavity disinfectants.Two groups, including 15 ...
Assessment of the impact of oral Human Milk Oligosaccharides (HMO) application on acute diarrhoea and the development of prolonged and persistent diarrhoea in paediatric patients hospitali...
This study is an open-label, prospective pharmacokinetic study investigating two antiretroviral agents in parallel and employing an adaptive design with two stages, whereby the results obt...
The purpose of this study is to demonstrate comparability between Contour SE™ Microspheres and Embosphere® Microspheres for achieving post UFE fibroid devascularization in women with s...
This study will investigate the effectiveness of nanohydroxyapatite (nano-HAP)-containing toothpastes and cream to relieve dentin hypersensitivity, comparing it with those of a commercial ...
Iron (II,III) oxide (Fe3O4). It is a black ore of IRON that forms opaque crystals and exerts strong magnetism. The NANOPARTICLES; and MICROSPHERES of its mineral form, magnetite, have many biomedical applications.
Works consisting of drawings of architecture and architectural projects, whether the project was executed or not. (Art & Architecture Thesaurus, 1990, v.2)
A free radical gas produced endogenously by a variety of mammalian cells, synthesized from ARGININE by NITRIC OXIDE SYNTHASE. Nitric oxide is one of the ENDOTHELIUM-DEPENDENT RELAXING FACTORS released by the vascular endothelium and mediates VASODILATION. It also inhibits platelet aggregation, induces disaggregation of aggregated platelets, and inhibits platelet adhesion to the vascular endothelium. Nitric oxide activates cytosolic GUANYLATE CYCLASE and thus elevates intracellular levels of CYCLIC GMP.
A potent mutagen and carcinogen. This compound and its metabolite 4-HYDROXYAMINOQUINOLINE-1-OXIDE bind to nucleic acids. It inactivates bacteria but not bacteriophage.
A potent mutagen and carcinogen. It is a reduction product of 4-NITROQUINOLINE-1-OXIDE. It binds with nucleic acids and inactivates both bacteria and bacteriophage.
Radiology is the branch of medicine that studies imaging of the body; X-ray (basic, angiography, barium swallows), ultrasound, MRI, CT and PET. These imaging techniques can be used to diagnose, but also to treat a range of conditions, by allowing visuali...