Materials Literature
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Supported early transition metal oxides have important applications in numerous catalytic reactions. In this article, we review the synthesis and activity of well-defined model WO3 and MoO3 catalysts that are prepared via deposition of cyclic gas-phase (WO3)3 and (MoO3)3 clusters generated by sublimation of WO3 and Mo…
Ultrathin NiCo 2 O 4 nanosheets directly grown on one-dimensional CNTs, as high-performance electrode materials for supercapacitors, were synthesized through a facile chemical co-deposition process combined with post-calcination in air.
Sulfur impurities in carbon containing fuels for solid oxide fuel cells (SOFC), e.g.natural gas and biogas, typically lead to significant losses in performance due to the sulfur sensitivity of Ni/yttria-stabilized-zirconia (YSZ) anodes for SOFC.Full cells having Ni/YSZ anodes have been characterized during long-term g…
Porous carbon spheres (PCS) with meso/microporous structure are designed and fabricated through a facile hydrothermal method by employing glucose as a carbon precursor and sodium molybdate (Na2MoO4) as a porogen, structure-direct agent and catalyst. With the assistance of Na2MoO4, the porous structure of the carbon sp…
Incompatibility between hydrophilic natural fibers and hydrophobic matrix is known to affect the adhesion of the fiber and matrix. Therefore, it becomes necessary to modify the surface of natural fibers for improved adhesion between the fiber and matrix. Prosopis juliflora fibers (PJFs) are known to possess desirable…
Whilst the physical and chemical properties of nanoparticles in the gas or idealized solvent phase can nowadays be characterized with sufficient accuracy, this is no longer the case for particles in the presence of a complex biological environment. Interactions between nanoparticles and biomolecules are highly complex…
For the first time a simple one step method has been developed for the synthesis of uniform, water dispersible, amine functionalized nanoparticles of size about 7 nm. The synthesis process was accomplished by refluxing Fe(acac)3 and Co(acac)2 in diethylene glycol and ethanolamine. The synthesized particles show superp…
By means of spooling spectroscopy, we demonstrate our discovery on near-infrared electrochemiluminescence of Au 25 − nanoclusters at 950 and 900 nm, which can be attributed to the Au 25 − *, Au 25 0 * and Au 25 + * excited species being controllable chemically and electrochemically.
During the last century, natural fibers and particulates are used as reinforcement in polymer composite that has been continuously growing in the composite industry. This polymer matrix composite has wide range of applications in hostile environment where they are exposed to external attacks such as solid particle ero…
A question that is naturally raised is how to improve the survivability of aircraft structures regarding low and high velocity impacts. Since structural failure is caused primarily by fracture, a fundamental understanding of the mechanisms and mechanics of the material is one of the most important steps needed to solv…
Nanoprobes with enzyme-like properties attracted a growing interest in early screening and diagnosis of cancer. To achieve high accuracy and specificity of tumor detection, the design and preparation of enzyme mimetic nanoprobes with high enzyme activity, tumor targeting and excellent luminescence property is highly d…
High-resolution on-chip supercapacitors with impressive scan rate abilities exceeding 1000 V s −1 have been demonstrated.
The development of a low-cost, high-performance, biobased membrane technology has been attempted to treat environmentally sensitive wastewater streams.
A facile method of polymerizing polypyrrole (PPy) on poly( N -vinylpyrrolidone) (PVP) coated cellulose nanocrystals (CNCs) was developed.
Plasmonic metal nanostructures have shown great potential in sensing, photovoltaics, imaging and biomedicine, principally due to the enhancement of local electric field by light-excited surface plasmons, i.e., collective oscillation of conduction band electrons. Thin films of nanoporous gold have received a great deal…
We report a general emulsion soft-template method to synthesize porous graphene foams for multi-functional applications, including lithium–oxygen batteries and oil-adsorption.
Copper chalcogenide nanocrystals (CuCNCs) as a type of semiconductor that can also act as efficient catalysts are rarely reported. Herein, we study water-soluble size-controlled Cu(2-x)Se nanocrystals (NCs), which are copper deficient and could be prepared by a redox reaction with the assistance of surfactants. We fou…
The theoretical description of sparse matter attracts much interest, in particular for those ground-state properties that can be described by density functional theory. One proposed approach, the van der Waals density functional (vdW-DF) method, rests on strong physical foundations and offers simple yet accurate and r…
Extraction processes are largely used in many chemical, biotechnological and pharmaceutical industries for recovery of bioactive compounds from medicinal plants. To replace the conventional extraction techniques, new techniques as high-pressure extraction processes that use environment friendly solvents have been deve…
Due to the relatively weak van der Waals (VDW) force between interlayers, few-layer MoS2 nanosheets are prepared using a simple ultrasonic exfoliation method and incorporated into PMMA. The good nonlinear optical (NLO) property of the MoS2/PMMA composite for the nanosecond pulsed laser at both 532 and 1064 nm has been…