Materials Literature
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Photoresponsive molecules that incorporate peptides capable of material-specific recognition provide a basis for biomolecule-mediated control of the nucleation, growth, organization, and activation of hybrid inorganic/organic nanostructures. These hybrid molecules interact with the inorganic surface through multiple n…
The in situ observation of the first stage of sintering of cerium dioxide microspheres was performed using an environmental scanning electron microscope at high temperature (HT-ESEM). The associated morphological modifications were described quantitatively for systems constituted by two single crystal grains, on the o…
The synthesis of a metal/semiconductor (Cu/ZnO) core/shell nanostructure consisting of Cu nanoparticles with an average diameter of 44.4 ± 4.3 nm and coated with a 4.8 ± 0.5 nm-thick layer of ZnO is reported. The Cu/ZnO core/shell nanomaterials were formed by rapidly injecting a mixture of copper(I) chloride, zinc ace…
Realizing simultaneous reinforcement and toughening in polypropylene based on polypropylene/elastomer <italic>via</italic> controlling crystalline structure and dispersed phase morphology.
Metallophthalocyanines (MPcs) are very useful pigments but scarcely soluble without appropriate functional groups in common solvents. Herein, we report that bent polyaromatic amphiphiles act as excellent solubilizing reagents for nonfunctionalized MPcs and larger MPc derivatives (e.g., CuPc, perhalogenated CuPcs, Cu-n…
Superparamagnetic Iron Oxide Nanoparticles (SPIONs) are performing contrast agents for Magnetic Resonance Imaging (MRI). A functionalization strategy for SPIONs based on hydrophobic interactions is a versatile approach easily extendable to several kinds of inorganic nanoparticles and suitable for obtaining stable and…
The velocity of individual 180° domain walls in thin ferroelectric films of PbZr0.1Ti0.9O3 is strongly dependent on the thickness of the top Pt electrode made by electron-beam induced deposition (EBID). We show that when the thickness is varied in the range <100 nm the domain wall velocity is seen to change by 7 order…
The saturation magnetization of sulfur-doped coral-like cobalt ferrite nanoparticles was improved to 81 emu g <sup>−1</sup> <italic>via</italic> a facile and novel calcining process.
Investigation of CuNb <sub>1−x</sub> Ta <sub>x</sub> O <sub>3</sub> has led to new insights into the visible-light photocurrents and photocatalytic activities of solid solutions.
We report the surface modification of nanocrystalline Gd2O3:Eu(3+) phosphor by (3-Aminopropyl)trimethoxysilane (APTMS). The nanoparticles were first coated with silica using the Stöber process, and then annealed at 650 °C for 2 h. Afterwards, APTMS was functionalized onto the silica layer to obtain Gd2O3:Eu(3+) nanopa…
Rhodamine B dye wastewater was degraded using cobalt phthalocyanine supported Mg-Al hydrotal- cite and H₂O₂. The effects of H₂O₂, temperature and concentration of Rhodamine B on the reaction kinetics were studied. The results indicate that the degradation process conforms to the equation of first order kinetics. The f…
Structural, magnetic, and magnetocaloric properties of the phase separated La0.5Ca0.5–xSrxMnO3 (x = 0, 0.2, 0.3, 0.4, and 0.5) manganites have been studied. The results show that the phase coexistence state can be investigated by magnetocaloric studies (especially the field dependence of magnetic entropy change at con…
Single phase perovskite SmFeO₃ nanoparticles were synthesized using a simple microwave method using Fe(NO₃)₃· 9H₂O and Sm(NO³)³ · 6H₂O. The resulting samples were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) surface area measurement, UV-visible diffu…
A two-step energy transfer was achieved in Er <sup>3+</sup> –Yb <sup>3+</sup> co-doped transparent glass ceramics containing CaF <sub>2</sub> nanocrystals, which involved down-conversion of an absorbed visible photon to two emitted near-infrared photons.
Hydrogen environment embrittlement (HEE) on austenitic stainless steels SUS304, 304L, and 316L in the high pressure hydrogen gas was evaluated from ambient temperature to 20 K using a very simple mechanical properties testing procedure. In the method, the high- pressure hydrogen environment is produced just inside the…
Crystal engineering is discussed, along with its three key concepts: crystal packing; the design of solids; and physical and chemical properties.
ZnO/GaN alloys have exceptional photocatalytic applications owing to their suitable band gaps corresponding to the range of visible light wavelength and thus have attracted extensive attention over the past few years. In this study, the structural stabilities and electronic properties of core/shell, biaxial, and super…
Improving up-conversion luminescence efficiency of rare-earth ions is always a research hotspot because of its important applications in laser source, color display, photoelectric conversion and multiplexed biolabeling.
The catalytic nature of particulate matter is often advocated to explain its ability to generate reactive oxygen species, but quantitative data are lacking. We have performed molecular characterization of three different carbonaceous nanoparticles (NP) by 1. identifying and quantifying their surface functional groups…
Emerging research is revealing a diverse array of interfacially-active proteins that are involved in varied biological process from foaming horse sweat to bacterial raincoat formation. We describe an interdisciplinary approach to study the molecular and biophysical mechanisms controlling the activity of an unusual bac…