Materials Literature
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Herein we report the preparation of truly soluble CNOs by covalent functionalization with hexadecyl chains. These compounds are prepared in two steps: first, reduction of CNOs with a Na-K alloy in 1,2-DME under vacuum, followed by nucleophilic substitution employing 1-bromohexadecane.
An anhydrous hydroxide ion conductor, Sn0.92Sb0.08P2O7, can function as an electrolyte for aluminum–air batteries, where aluminum is oxidized to an aluminate species during discharge, and the aluminate species is reduced to aluminum by charging the cell. This battery generated an open-circuit voltage of ca. 1.6 V with…
A novel function of polypropylene grafted with maleic anhydride (PP-g-MA) as synergistic additives to effectively reduce the combustion rates of polypropylene (PP) polymer nanocomposites (PNCs) reinforced with in situ synthesized cobalt (Co)–cobalt oxide core–shell nanoparticles (NPs) was reported. Two PP-g-MAs with m…
The Al(III)-containing polyanions [Al(III)4(H2O)10(β-XW9O33H)2](4-) with X = As(III) (1) and Sb(III) (2) feature four aluminum(III) centers sandwiched by two trivacant (β-XW9O33) Keggin units, and trigger peroxide catalysis as well as substrate coordination via multiple Lewis acid site interactions.
BACKGROUND: Sturgeon (Acipenser sturio Linnaeus) skin contains high amount of nutrients including unsaturated fatty acids and collagen. A pepsin-assisted extraction procedure was developed and optimized for the extraction of collagen from Chinese sturgeon (Acipenser sturio Linnaeus) skins. OBJECTIVE: To determine the…
In this study, we found that the photoluminescence (PL) of 11-mercaptoundecanoic acid (11-MUA)-protected gold nanodots (Au NDs; ca. 2.0 nm) was highly dependent on the capping ligands and the ligand density. Deposition of 11-MUA onto the surfaces of as-prepared gold nanoparticles (Au NPs; ca. 3.0 nm) yielded luminesce…
Gold nanoparticles could only be highly dispersed onto the as-synthesized TS-1 zeolite (TS-1-syn: with template) rather than the calcined one (TS-1-calc: template removed), via a deposition–precipitation method using urea. The Au-1/TS-1-syn (Au loading: 1 wt%) is promising for propylene epoxidation with O2 and H2, del…
High surface area, hierarchical porous carbons are easily prepared from poly(vinylidene fluoride) (PVDF) by NaOH activation. In contrast to the conventional two-step carbonization–activation method, we directly heated the mixture of powdery PVDF and NaOH at 600 °C to accomplish carbonization and activation in one step…
Manganese oxide (MnOx) nanostructures were synthesized by the pulse reverse electrodeposition technique for electrode materials of supercapacitors. The morphology and composition of MnOx were controlled by the pattern of applying potential. In the case where constant potential (CP) was applied, a bulk film of aggregat…
In this contribution, a facile and low-temperature solution route has been developed to large-scale synthesis of Cu2O with polyhedral, porous and hollow structures by the assistance of surfactant CTAB. The morphologies (six symmetric branches, porous branches and porous-shell hollow spheres) of the Cu2O particles, whi…
X-Ray absorption fine structure (XAFS) spectroscopy has experienced a rapid development in the last four decades and has proved to be a powerful structure characterization technique in the study of local environments in condensed matter. In this article, we first introduce the XAFS basic principles including theory, d…
We present here a highly selective and sensitive label-free method to detect Hg(2+) ions in aqueous solution by using DNA molecular machine-based fluorescent Ag nanoclusters (AgNCs). This mechanism is based on the Hg(2+) ions triggering machine-like operations of DNA and the "product" of the machine being used to stab…
A catechol-functionalized porous organic polymer (POP) has been successfully metallated with a TaV trialkyl and remains thermally and structurally robust. The resulting POP-supported (catecholato)TaV trialkyl sites remain accessible to small molecules and can undergo reactions to yield stable, monomeric complexes that…
A new phthalocyanine and porphyrin based hybrid covalent organic framework, CoPc-PorDBA COF, has been synthesized and its gas storage properties have been measured. The CoPc-PorDBA COF crystallizes into 2D sheets with an eclipsed AA stacking motif, and it showed high surface area (SBET = 1315 m2 g−1), and can store up…
Here, we have synthesized the silver nanoparticles (AgNPs) by using the soil fungus Aspergillus niger 2587. The results recorded from UV-vis spectrophotometer and transmission electron microscopy (TEM) support the biosynthesis and characterization of AgNPs. The synthesized silver nanoparticles have also been tested ag…
A bio-based epoxy derived from dehydroabietylamine was synthesized. In comparison, its petrochemical counterpart based on benzylamine was also prepared. Their chemical structures were confirmed in detail by Fourier Transform Infrared Spectra (FT-IR) and Nuclear Magnetic Resonance (1H-NMR and HSQC). The curing reaction…
The discharge of oily wastewaters in the environment is steadily increasing, causing serious damages. Among various treatment methods, adsorption is generally considered the most appropriate, since it can remove both organic and inorganic pollutants. Adsorption using low-cost alternative biopolymers for removal of con…
We report the direct synthesis of highly luminescent Cu–Zn–In–S (CZIS) quaternary nanocrystals (NCs) in the non-coordinating solvent 1-octadecene (ODE) using chloride salts of Cu, In, and Zn as metal precursors in the presence of oleic acid and dodecanethiol. The resulting CZIS NCs had a narrow size distribution with…
Metallic nanoparticles have diverse applications in biomedicine, as diagnostics, image contrast agents, nanosensors and drug delivery systems. Anisotropic metallic nanoparticles possess potential applications in cell imaging and therapy + diagnostics (theranostics), but controlled synthesis and growth of these anisotr…
Through the discovery of ligand protected metal clusters with cores of a precise number of atoms, the exploration of the third dimension of the periodic table for fundamental research and also for applications has become less remote. So far, the exact number of metal atoms in the core has been determined unambiguously…