Materials Literature
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At a practical level, this compendium reviews the basics of soft and hard magnetic materials, discusses the advantages of the different processing routes for the exploitation of the magnetic properties and hence assists in proper, fail-safe and economic application of magnetic materials. Essential guidelines and formu…
Mosquito transmit diseases like malaria, dengue accounted for global mortality and morbidity with increased resistance to common insecticides. In the present study silver nanoparticles (AgNPs) were synthesized from aqueous leaves extracts of four plant species (Jatropha gossypifolia, Euphorbia tirucalli, Pedilanthus t…
In the search for promising electrode materials for supercomputer applications, we have synthesized a Ni2+ doped polyaniline, and a nanocomposite based on multiwalled carbon nanotubes (MWCNTs) and a Ni2+ doped polyaniline (PANI) in a HCl medium by an in situ oxidative polymerization. In the HCl medium and in the prese…
Two organometallic terpyridyl platinum gelators containing hydrophobic cholesterol with or without large steric hindrance were synthesized and characterized. The complex with three bulky tert-butyl groups (1a) can form a stable gel in several kinds of solvent, such as alcohol, ethyl acetate and toluene with ultrasound…
We report a facile hydrolytic process for the preparation of CQDs/SiO2 porous nanocomposites, which show high catalytic activity and stability for the selective oxidation of cis-cyclooctene under visible light irradiation, with TBHP as a radical initiator and oxygen (in the air) as an oxidant at 80 °C.
In this article, our recent progress concerning the effects of atomic substitution, magnetic field, and temperature on the magnetic and magnetocaloric properties of the LaFe 13− x Al x compounds are reviewed. With an increase of the aluminum content, the compounds exhibit successively an antiferromagnetic (AFM) state,…
The corrosion behavior of Ag in outdoor environments and in a salt spray chamber was investigated. The coulometric reduction technique was applied to identify various silver corrosion products including Ag 2 SO 4 and AgO. These corrosion products were observed on samples exposed in certain field environments. A platea…
A solid oxide electrolysis cell for reducing CO2 to CO was studied using a LaGaO3-based electrolyte at intermediate temperatures (973–1173 K). Various metals were examined as cathodes for CO2 reduction, and it was found that Ni shows high activity. However, coke formation was observed during the initial period. Furthe…
Lead-free bismuth sodium titanate (Bi0.5Na0.5TiO3, BNT) perovskite nanostructures including nanoplates, nanocubes and nanowires were synthesized by a facile hydrothermal method without any additives or templates. The crystallization and morphologies of the hydrothermal derived BNT were controlled by simply adjusting t…
A new synthesis methodology of sulfonated graphene was developed. In this process, the number of hydroxyl groups in graphene was initially increased with n-BuLi. Then, in the presence of chlorosulfonic acid, sulfonic acid groups could be covalently immobilized to hydroxyl groups under mild conditions. Sulfonated graph…
Copper (Cu) superstructures have been originally synthesized by using natural sapless leaves. A novel hybrid nanoarchitecture, Cu–MnO2 composite, is prepared through facile coating of a thin MnO2 nanofilm onto the highly electronically conductive Cu superstructures. Benefiting from their unique structures, as electrod…
The absorption, distribution, metabolism and excretion (ADME) and pharmacokinetic (PK) properties of inorganic nanoparticles with hydrodynamic diameters between 2 and 20 nm are presently unpredictable. It is unclear whether unpredictable in vivo properties and effects arise from a subset of molecules in a nanomaterial…
The presence of organic ligands on the surface of colloidal nanoparticles strongly limits their performance in technological applications where charge carrier transfer/transport plays an important role. We use metal salts, matched with the nanoparticle composition, to eliminate the surface organic ligands without intr…
Wormlike micelles with intracellular pH-activating properties were developed. The micelles remained in a “silent” state at physiological pH conditions (i.e. pH 7.4), but were activated in the acidic microenvironment of endocytic vesicles. The wormlike micelles could be employed as nanovectors for the intracellular del…
In this paper, both the leaf-like dendritic CoxFe1−x (x = 0.1, 0.3, 0.5 and 0.7) alloys and novel grain-like dendritic nanostructure Co0.9Fe0.1 alloy and ε-Co were synthesized by an electric field-induced and electrochemical reduction method under over-polarization current. The formation of these two dendritic structu…
Nickel is the most commonly used anode for solid-oxide fuel cells (SOFC) due to its fast kinetics and low price. A leading cause of degradation in Ni electrodes is oxidation. Here we use operando ambient-pressure X-ray photoelectron spectroscopy (XPS) to chemically characterize the Ni electrode of a fuel cell anode du…
Electric field gradient quadrupole Raman modes are observed in plasmon-driven chemical reactions investigated with high vacuum tip-enhanced Raman spectroscopy (HV-TERS). TER spectra reveal that 4-nitrobenzenethiol (4NBT) catalytically dimerizes to dimercaptoazobenzene (DMAB) under an HV-TERS setup. More importantly, w…
Dual-modal luminescence nanocomposites (NCs) were successfully prepared via a facile and versatile strategy by embedding the hydrophobic down-conversion (DC) fluorescence ZnS:Mn2+ quantum dots (QDs) and up-conversion (UC) luminescence NaYF4:Er3+/Yb3+ nanoparticles (NPs) into hydrophilic polymer matrixes through in sit…
In order to further improve their properties and functions and extend their applications in various technology fields, it is desired to decorate Ag NWs with foreign magnetic materials. In this work, silver nanowires (Ag NWs) decorated with magnetite nanoparticles have been fabricated by a facile co-precipitation metho…
The growth and oxidation of graphene supported on Rh(111) was studied in situ by high-resolution X-ray photoelectron spectroscopy. By variation of propene pressure and surface temperature the optimum growth conditions were identified, yielding graphene with low defect density. Oxidation of graphene was studied at temp…