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Nanosized NiO anode material was synthesized for lithium ion batteries and supercapacitor applications using pyrolysis of an oxalate precursor, which was prepared by a rheological phase reaction from nickel carbonate hydrate and oxalic acid. The obtained material was characterized with X-ray diffraction (XRD), differential scanning calorimetry–thermogravimetric analysis (DSC–TGA), scanning electron...
Paper is a versatile material with obvious advantages in being both inexpensive and environment friendly. However, a major drawback compared with many other materials, such as plastics, is that it is sensitive to both liquid water and moist air. Traditionally paper is protected from liquid water by sizing. The present work presents a new way to make paper water resistant by combining the layer-by-layer...
In this study polystyrene (PS) spheres were synthesized by emulsifier-free emulsion copolymerization of styrene with methacrylic acid for the fabrication of photonic crystals. A facile method to significantly improve the solvent resistance of photonic crystals was developed through surface modification of PS spheres by poly(vinyl pyrrolidone) (PVP). We used an ethanol soaking test to evaluate the...
Silica nanotubes (SiNTs) were synthesized by acid-leaching the natural halloysite nanotubes (HNTs). Transmission electron microscopy (TEM) and scanning electron microscope (SEM) images showed that SiNTs retained the morphology of HNTs. The specific surface area (183.6m 2 /g) and pore volume (0.74cm 3 /g) of SiNTs were three times higher than those of HNTs, which indicated more active...
Melamine-based mono carboxylate salts of aliphatic dicarboxylic acids are synthesized and characterized for gelation behaviour towards various solvents including water. Salts 1a (melaminium hydrogen maleate) and 1e (melaminium hydrogen adipate) were found to be outstanding hydrogelators. The packing of gelator molecule 1a in gel and dried state was probed by single crystal and powder X-ray diffraction...
Peculiarities of light scattered by aqueous suspension of diamond and graphite under electric field are studied. Both colloidal suspensions are polydisperse ones. Mean sizes of diamond and graphite particles are 450 and 600nm, correspondingly. Time- and field-dependencies of scattered light intensity are studied at different scattering angles. The dependencies are measured at along and across polarization...
TiO 2 nanocrystal/nanotube hybrids were presented and prepared by incubating non-prefabricated TiO 2 nanocrystals in anodized TiO 2 nanotubes. TiO 2 nanocrystals were incubated inside the nanotubes with tuning size and aggregation morphology by means of a block copolymer-assisted evaporation induced self-assembly (EISA) process. Compared with that of the bare TiO ...
A series of colloidal graphite/oil nanofluids were prepared by mechanical ball milling method. Their thermal conductivity (TC) and rheological properties were detailedly investigated. The TC tests show that the TC enhancements of the nanofluids depend strongly on the volume fraction (vol.%) of graphite and increase nonlinearly with increasing loading but have a weak relationship with temperature,...
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