Materials Literature
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Well-defined surface species can be generated on silica, but as expected for an amorphous support their environment is heterogeneous thus preventing the formation of true single-site species even for monopodal species, and it is particularly evident for multipodal species, (SiO)xM, x > 1.
We demonstrate the synthesis of monodisperse, heterostructured Pt-Ru nanocrystals with a novel core-shell structure by a one-step method. The Pt-Ru nanocrystals show excellent electrocatalytic activity towards formic acid oxidation. Such core-shell structured Pt-Ru nanocrystals are potential candidates as anode cataly…
In this work, we report a novel method of single step facile synthesis of magnetite nanoclusters via thermal decomposition of iron(III) acetylacetonate in a liquid mixture of tri(ethylene glycol) (TREG) and triethanolamine (TREA). The optimized ratio of TREG : TREA has been found to be 1 : 4 (v/v) for the formation of…
Stable thermo-responsive hydrogel nanofibres have been prepared by electrospinning of commercial poly(N-isopropylacrylamide) (PNIPAM) in the presence of a polyhedral oligomeric silsesquioxane (POSS) possessing eight epoxide groups and of an organic-base catalyst, followed by a heat curing treatment. The nanofibres sho…
Self-adaptive wettability is built on fibrous textile material through a simple one-step fabric treatment with nanotitania followed by controlled exposure to “light” and “dark”. The self-adaptive feature created a fabric with one side having superhydrophilic and the other having hydrophobic properties. With the two co…
A single-step synthesis of homogenous Ag/PVA nanocomposites is carried out and characterized by X-ray diffraction. A validation of the crystal information is established by transmission electron microscopy (TEM) and a homogenous mixing morphology is confirmed by SEM micrographs. Surface plasmon resonance (SPR) optical…
Simultaneous actuation and sensing properties of a triple layer actuator interchanging cations are presented for the first time. Thick polypyrrole (pPy)/dodecylbenzenesulfonate (DBS) films (36 μm) were electrogenerated on stainless steel electrodes. Sensing characteristics of pPy-DBS/tape/pPy-DBS triple layer artifici…
The preparation and characterization of hcp and fcc Ni and Ni/NiO nanoparticles is reported. Ni and Ni/NiO nanoparticles were obtained starting from a precursor material prepared using a citric assisted Pechini-type method and, then, followed by a calcination of the precursor in air at either 400 or 600°C for differen…
Two hybrid assemblies (3 and 4) with two kind of nanoscaled cluster units, the spherical [Co(24)(TC4A)(6)(MO(4))(8)Cl(6)](2+) cation (1 and 2) and Keggin-type [PM(12)O(40)](3-) anion (M = Mo (1/3), W (2/4)), were solvothermally prepared and characterized, in which the spherical units are constructed by six Co(4)-p-ter…
Ligand-free ZnO nanoparticles with a mean diameter of 100 nm were simply synthesized by solid-state transformation of Zn(II)–organic infinite coordination polymer particles (ICPs) at 550 °C. The well-crystallized ZnO nanoparticles exhibit strong visible emission centred at 600 nm and the emission light clearly appeare…
The crystallization kinetics and morphology of a series of biodegradable poly(butylene succinate-co-ethylene succinate) (P(BS-co-ES)) with ethylene succinate (ES) comonomer composition ranging from 13 to 28 mol% were investigated with various techniques and compared with those of the homopolymer poly(butylene succinat…
We report and rationalize the formation of gels, responsive to sodium cations or pH changes, in aqueous media by a supramolecular system constituted of an aryl extended calix[4]pyrrole receptor and the tetramethylammonium guest.
Surface PEGylated hollow silica microspheres (PEG–HSS) of ∼1250 nm in diameter were prepared by coating a thin layer of amino functionalized silica on the template of positive charged polystyrene, removing the template in THF solution, and further coupling the HSS with methoxy polyethylene glycol propionic acid (mPEG–…
A major part of the heat supplied in an IC engine is not realized as work output, but dumped into the atmosphere as waste heat. If this waste heat energy is tapped and converted into usable energy, the overall efficiency of the engine can be improved. The percentage of energy rejected to the environment through exhaus…
Preferred handedness in the supramolecular chirality of self-assembled achiral oligo(p-phenylenevinylene) (OPV) derivatives is induced by chiral solvents and spectroscopic probing provides insight into the mechanistic aspects of this chiral induction through chiral solvation.
Properties of cellulose-derived fibers are extremely sensitive to surface treatment. Many studies have investigated the effects of varying surface treatment parameters in natural fibers to improve fiber-matrix bonding; however, work is still needed to assist with developing better quality control methods to use these…
Multiple exciton generation is a process that can occur in quantum dots by which the energy of an absorbed photon in excess of the bandgap can be used to create one or more additional excitons instead of being wasted as heat. This effect has received considerable interest because it has the potential to significantly…
Polypyrrole nanotubes (PPyNTs)/Pt nanoparticle hybrids were synthesized by using covalently attached imidazolium-type ionic liquids (ILs) as linkers. The resultant Pt/ILs/PPyNTs hybrids exhibited high electrocatalytic activity in electrocatalytic oxidation of methanol.
Multiferroic materials such as bismuth iron oxide (BiFeO3/BFO) have strong potential for solar hydrogen generation. In this paper, we have described a sol-gel method using urea and polyvinyl alcohol at low temperature to synthesize high purity BFO nanoparticles of size 50- 60 nm. A complicated and high temperature pro…
We demonstrate an efficient synthesis of novel layered double hydroxide mesoporous silica core-shell nanostructures (LDH@mSiO(2)) that have a hexagonal MgAl-LDH nanoplate core and an ordered mesoporous silica shell with perpendicularly oriented channels via a surfactant-templating method. Transmission electron microsc…