Materials Literature
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Novel three-dimensional (3D) hierarchical NiSix/Co3O4 core–shell nanowire arrays composed of NiSix nanowire cores and branched Co3O4 nanosheet shells have been successfully synthesized by combining chemical vapor deposition and a simple but effective chemical bath deposition process followed by a calcination process.…
Cobalt nanoparticles were produced by employing the liquid-phase reduction method and hydrazine. The effect of citric acid additives on the formation and growth mechanism of cobalt nanoparticles was investigated using polarization methods. The cobalt nanoparticles produced in 0.2 M cobalt sulfate and 5 M hydrazine at…
To combine the merits of the one-dimensional structure and the porous structure, mesoporous VO 2 nanowires have been designed and reported for the first time.
Magnetic nanoparticles of spinel nanocrystalline cobalt ferrite were synthesized via the sol-gel method and subsequent annealing. The influence of the annealing temperature on the structure, magnetic properties, and magnetorheological effect was investigated. The finite crystallite size of the particles, determined by…
A general ambient pressure drying approach to synthesize silica-based composite aerogels with high BET surfaces and large pore volumes has been reported.
Salivary gland hypofunction resulting in xerostomia occurs as a result of various pathological conditions such as radiotherapy for head and neck cancers, Sjögren's syndrome or salivary gland tumor resection. It can induce a large number of problems, including dental decay, periodontitis, dysgeusia, difficulty with mas…
Hyperbranched epoxy/silver–reduced graphene oxide immobilized curcumin nanocomposite as an antimicrobial material.
Carbohydrates are involved in different cellular recognition events, and glycopolymers with carbohydrate side chains are currently being applied in many fields, with much potential for disease treatment. The aggregation shape has obvious effects on the nanoparticle-cell interaction and is therefore important for the a…
Crystal facet engineering has attracted worldwide attention, particularly in facet manipulation of titanium dioxide (TiO2) surface properties. An improved synthesis by solvothermal route has been employed for the formation of TiO2with highly exposed 001 facets decorated on reduced graphene oxide (RGO) sheets. The RGO-…
A dynamic MOF with hierarchical pores displays various SC–SC structural transformations including reversible desolvation–resolvation, I 2 uptake–release, and photochemical [2+2] cycloaddition.
Two rhodamine-based polymers were prepared via free radical polymerization and could serve as lysosome targeting probes with good pH sensitivity. Fluorescence imaging of nude mice displayed a chance for visualization of cancerous tissue in vivo by sensing its acidic microenvironments.
A composite with FeCl₂ nanocrystals sandwiched between Cl-doped graphite layers has been created via a space-confined nanoreactor strategy. This composite can be used as a new type of anode material for Li-ion batteries, which exhibit high reversible capacity and superior rate capability with excellent cycle life.
We present a method for the first-principles calculation of nuclear magnetic resonance (NMR) J-coupling in extended systems using state-of-the-art ultrasoft pseudopotentials and including scalar-relativistic effects. The use of ultrasoft pseudopotentials is allowed by extending the projector augmented wave (PAW) metho…
Research Article| January 01, 2014 Probing of Pressure-Induced Bonding Transitions in Crystalline and Amorphous Earth Materials: Insights from X-ray Raman Scattering at High Pressure Sung Keun Lee; Sung Keun Lee School of Earth and Environmental Sciences, Seoul National University, Seoul, 151-742 Korea, sungklee@snu.a…
The effects of unleaded gasoline and unleaded gasoline–ethanol blends on engine performance and pollutant emissions were investigated experimentally in a single cylinder, four-stroke spark-ignition engine with variable engine speeds (2600–3500 rpm). Four different blends on a volume basis were applied. These are E0 (0…
Using first principles density functional theory (DFT), the electronic and magnetic properties as well as the Li-ion migration in LiCoO2 have been studied with a gradient corrected functional. The magnetic properties were also investigated in addition using a gradient corrected functional in combination with an on-sit…
Studies of proton transport in confined thin polymer electrolytes are essential for providing additional information regarding the structure–property relationships of such materials.
A novel yttrium-doped graphene oxide (GOY) composite was first prepared and its photocatalytic performance was investigated by monitoring the degradation of MB.
Cellulose whiskers (CWs) were explored as effective nanostructures to manipulate the microstructure of Nafion® membranes for high-performance fuel cell applications. Electrochemical impedance measurements revealed that not only the proton conductivity of the nanocomposite membranes comprising 5 wt% CWs was remarkably…
A series of heteroleptic iridium(III) complexes were investigated by using the density functional theory/time-dependent density functional theory (DFT/TD-DFT) approach to determine the influence of the diphenylphosphoryl (Ph2PO) moiety on the electronic structures, phosphorescent properties and the organic light-emitt…