Materials Literature
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Iron(II) complexes of Z- and E-2,6-di(1H-pyrazol-1-yl)-4-styrylpyridine (Z-2 and E-2, respectively) exhibited visible light photoisomerization from Z-2 to E-2, both in solution and in solid phases. Z-2 occupied the high-spin state over the full temperature range examined, whereas E-2 displayed a spin crossover phenome…
A general and facile method is reported for the synthesis of a wide range of metal sulfide nanocrystals including silver sulfide, zinc sulfide, cadmium sulfide, lead sulfide, bismuth sulfide, tin sulfide, iron sulfide and copper sulfide, etc. This method is based on the thermal decomposition of single-source precursor…
Titanium dioxide nanoparticles (TiO2 NPs) are the most commonly used metal oxide NPs in various industrial and commercial products. The present study has demonstrated a significant cellular uptake of TiO2 NPs in the human keratinocyte cells (HaCaT) using transmission electron microscopy and flow cytometry. The data ex…
Using density functional theory (DFT) and kinetic analyses, a new carboxyl mechanism for the water-gas-shift reaction (WGSR) on Au/CeO2(111) is proposed. Many elementary steps in the WGSR are studied using an Au cluster supported on CeO2(111). It is found that (i) water can readily dissociate at the interface between…
We show that amorphous calcium carbonate (ACC) can be synthesized in phospholipid bilayer vesicles (liposomes). Liposome-encapsulated ACC nanoparticles are stable against aggregation, do not crystallize for at least 20 h, and are ideally suited to investigate the influence of lipid chemistry, particle size, and solubl…
As highly efficient energy conversion devices with the capability for power/heat co-generation and fuel flexibility, solid-oxide fuel cells (SOFCs) have received considerable attention recently as a keystone of the future energy economy. Nowadays, lack of a proper cathode with high performance at intermediate temperat…
In this paper we describe the synthesis and the optimisation of a new family of fluorescent core–shell nanoparticle using protein-stabilised gold nanoclusters. Fluorescent gold nanoclusters (<2 nm) entrapped in bovine serum albumin (BSA) protein were loaded in a 100 nm-silica nanoparticle with an optimal concentration…
It is well known that WO(3) interacts efficiently with H(2) gas in the presence of noble metals (such as Pd, Pt and Au) at elevated temperatures, changing its optical behaviors; and that its crystallinity plays an important role in these interactions. For the first time, we investigated the in situ Raman spectra chang…
The interaction of Pt particles with the regular CeO(2)(111) surface has been studied using Pt(8) clusters as representative examples. The atomic and electronic structure of the resulting model systems have been obtained through periodic spin-polarized density functional calculations using the PW91 exchange-correlatio…
Nanotechnology is currently used in industry, medicine, and military applications, as well as in more than 300 commercial products. Yet, the same properties that make these particles exciting for technology also make them daunting public health concerns because their toxicity is unknown and relatively unexplored. Incr…
We examine the effect of reactant concentrations, temperatures and feeding methods on the morphology of ZnO formed when reacting solutions of ZnSO(4) and NaOH. The catalytic effect of hydroxide in excess relative to the stoichiometric ratio is considered. It is shown that, having fixed other reaction conditions, the e…
In this paper, ZnIn(2)S(4) perpendicular nanosheet films have been directly deposited on FTO substrates by a facile hydrothermal method and investigated as the electrode materials for solar cells. The crystal structure, morphology, and optical properties of the obtained ZnIn(2)S(4) films were characterized by measurem…
A novel class of supramolecular hydrogels derived from amino sugars is reported, where the self-assembly of aromatic carbohydrate amphiphiles is driven by CH-π interactions, rather than π–π stacking and H-bonding associated with gelators based on aromatic peptide amphiphiles. Spectroscopic data is provided as evidence…
Energy storage and in particular electrical storage of energy has become a very talked about topics in circles, ranging from lay person in regard to hybrid and battery electric vehicles, to professional and certainly by legislators and energy policy makers in government. But even to professional the distinction betwee…
Herein we investigate the size-dependent force of endocytosing single gold nanoparticles by HeLa cells. The results reveal that both the uptake and unbinding force values are dependent upon the size of gold nanoparticles.
In order to simulate complex scenario like ballistic impact, correct material calibration is fundamental. The material in the area involved by impact can experience high deformation and damage in a very limited time. As a consequence dynamic tests on the materials are needed in order to calibrate constitutive law able…
MgAl–LDH hybrids containing various short-chain organic sulfonate (RSO3−) anions were synthesized, and among them, LDH hybrids containing isethionate (Ise, 2-hydroxyethanesulfonate, HO(CH2)2SO3−) exhibited swelling behavior in water. On adding water, these LDH hybrids (Ise–MgAl–LDH3 (Mg/Al = 3) and Ise–MgAl–LDH2 (Mg/A…
Silver colloids: In silver nanoparticles if the product is clear then it is ionic silver, not a true silver colloid. Meso silver is called as purest colloidal silver and silver nanoparticles come to the market in 5 types according to its purpose.
This paper reports the possibilities of using FTIR spectroscopy and simultaneous thermogravimetry and differential thermal analysis for examination of the structural order of four Czech kaolinite samples (Jimlikov, Sedlec, Olomucany and Unanov deposits) and one kaolinite standard KGa-1b from Georgia deposit obtained f…
Polyaniline (PANI-EB) containing MFe2O4 (M is an element in a divalent state; M2+ = Fe2+, Co2+, Ni2+, Mn2+, and Zn2+) were prepared by chemical method. The results of this investigation indicate that; i) the size of MFe2O4 in PANI is in the range 10 to 20 nm. ii) the MFe2O4 nanoparticles have the characteristic reflec…