Materials Literature
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Expandable graphite (EG) has attracted more and more attention in fire science society due to its excellent char-forming ability, however, it cannot meet commercial flame-retardant requirements because of the low intensity of the char. This work reported our very recent efforts on improving the char quality of EG by i…
In this work, we investigate the efficient energy transfer occurring between ZnO nanocrystals (ZnO-nc) and europium (Eu(3+)) ions embedded in a SiO2 matrix prepared using the sol-gel technique. We show that a strong red emission was observed at 614 nm when the ZnO-nc were excited using a continuous optical excitation…
Nanostructured core/shell electrodes have been experimentally demonstrated promising for high-performance electrochemical energy storage devices. However, chemical insights into the significant roles of nanowire cores on the growth of shells and their supercapacitor behaviors still remain as a research shortfall. In t…
ABSTRACT In an attempt to reduce the high volatile organic compound (ethanol) emissions from silica-reinforced NR compounds, this work aimed to, at least partially, replace the use of large quantities of silane coupling agent bis-(3-triethoxysilylpropyl) tetrasulfide (TESPT). The use of 7.5 phr of epoxidized natural r…
To eliminate the elaborate processes employed in other non-biological-based protocols and low cost production of silver nanoparticles (AgNPs), this study reports biogenic synthesis of AgNPs using silver salt precursor with aqueous extract of Aspergillus fumigates MA. Influence of silver precursor concentrations, conce…
From recent studies on bone and shell formation, the importance of polysaccharides in biomineralization processes is gradually being recognized. Through ion-complexation and self-assembly properties, such macromolecules have remarkable effects on mineralization. However, their influences on the different regimes of cr…
To investigate the effects of local density fluctuations on phonon propagation in a hydrogen bonded structure, we studied the thermal conductivity κ of the crystal, liquid, and glassy states of pure glycerol as a function of the temperature, T, and the pressure, p. We find that the following: (i) κcrystal is 3.6-times…
Understanding the activity of nanomaterials at the lipid bilayer surface can provide key information for the feasible design of functional bioactive agents. Herein, we used micro- and nanoscopic imaging techniques to evaluate the activity of nanometer-sized inorganic clusters and report that destruction of the lipid m…
A highly regular one-dimensional domain pattern is formed in ferroelectric K0.75Na0.25NbO3 thin films grown on (110) TbScO3 substrates using metal–organic chemical vapour deposition (MOCVD). The domain pattern exhibits a lateral periodicity of about 50 nm and extends over several micrometres. The monoclinic symmetry o…
Zinc oxide nanorods (ZnO NRs), synthesized by a low temperature chemical method, were postannealed at 260 °C in air and under high pressure water vapor (HWA) at 1.3–3.9 MPa. We found that the UV luminescence intensity increased by a factor of 2–3 after HWA annealing compared to that observed after annealing in air. St…
Block copolymer phase separation has been employed to form templates for the fabrication of nanoscale patterns of metals due to their characteristic size scales that range from several nanometers to tens of nanometers. In the present work, poly(vinyl catechol‐block‐styrene) PVCa‐b‐PSt synthesized with various composit…
We have designed and developed a new strategy for the chemical and electrochemical graft copolymerization of aniline onto poly(vinyl chloride). For this purpose, first phenylamine groups were incorporated into poly(vinyl chloride) via a nucleophilic substitution reaction in the presence of a solvent composed of 4-amin…
The optimum implementation of a thermoelectric generator (TEG) is investigated. In order to study the feasibility of such system, a model for a large-scale TEG is designed and optimized to convert thermal energy into electricity. The mathematical formulation of the system comprising multiple TEG modules is modeled and…
The plasmon-driven oxidation of amine (-NH2) groups and the reduction of nitro (-NO2) groups on a nanostructured metal surface in an aqueous environment have been reported experimentally and theoretically. The question of which process occurs first in the aqueous environment is an interesting question in the field of…
Secondary reactions of hydrogen chloride (HCl) during high-temperature combustion processes were elucidated using a model carbon prepared from a commercially available phenol resin. This resin was O 2 -activated, followed by doping with K +, Ca 2+, Cu 2+, or Zn 2+, and subsequently exposed to a stream of 100 ppm of HC…
ABSTRACT With increasing demand for ecological leather, ecological fatliquors with good comprehensive properties are getting more and more attention. The amphiphilic acrylate copolymer containing both hydrophilic (carboxyl) and hydrophobic (long alkyl) groups is one of the main alternatives to conventional fatliquors.…
For the first time the problem of chemical functionalization of mono- and bilayer graphene by epoxy and hydroxyl groups was considered taking into account a real geometry profile of synthesized carbon objects. Such energy characteristics of graphene oxidization as the enthalpy of reaction, binding energy, and the ener…
Cofactor F420is an electron carrier with a major role in the oxidoreductive reactions ofMycobacterium tuberculosis, the causative agent of tuberculosis. A γ-glutamyl ligase catalyzes the final steps of the F420biosynthesis pathway by successive additions ofl-glutamate residues to F420-0, producing a poly-γ-glutamate t…
This paper extends a straightforward technique for the calculation of shell thicknesses in core–shell nanoparticles to the case of core–shell–shell nanoparticles using X‐ray photoelectron spectroscopy (XPS) data. This method can be applied by XPS analysts and does not require any numerical simulation or advanced knowl…
The Monte Carlo programme PENEPMA performs simulations of X-ray emission from samples bombarded with electron beams. It is both based on the general-purpose Monte Carlo simulation package PENELOPE, an elaborate system for the simulation of coupled electron-photon transport in arbitrary materials, and on the geometry s…