The effect of different processing routes on the microstructure of nanocrystalline ceria powder has been investigated. The nanocrystalline ceria is produced by solid state high energy ball milling (HEBM) and liquid state solution combustion synthesis (SCS) method. The liquid state route consists of a high temperature combustion reaction to form ceria from an aqueous solution of cerium ammonium ...

A new polyvinyl choloride (PVC) membrane sensor for cerium (III) was prepared based on 4,13-didecyl-1,7,10,16-tetraoxa-4,13-diazacyclooctadecane (kryptofix22DD) as an ionophore. The sensor exhibites a linear concentration range of 1.0×10-6to 1.0×10-1M, with a Nernstian slope of 18.0±1.0 mV/decade, and a detection limit of 9.7×10-7M. It has a fast response time (5 s) and can be used for two mont...

Impedance spectroscopy has a high potential to detect chemical reactions in flowing systems. In this work, the approach using impedance as possible analytical tool for continuous hydrothermal syntheses (CHTS) is presented. With CHTS-process, it produce metalloxide nanoparticles with close particle size distribution and specific surface properties. For this, necessary evaluate electrode geometry...

The title compound, [Tl(C(2)H(6)OS)(6)](NO(3))(3), consists of six dimethyl sulfoxide (DMSO) mol-ecules coordinated to a Tl(III) atom, which lies on a axis, and three nitrate anions (3. symmetry) to neutralize the charge. The coordination polyhedron around the Tl(III) atom is octa-hedral, defined by six O atoms of the DMSO mol-ecules. In the crystal structure, C-H⋯O hydrogen bonds are observed....

N-p-Chlorophenylcinnamohydroxamic acid reacts with cerium(IV) to form an orange coloured complex, quantitatively extractable into chloroform from alkaline medium. On the basis of this sensitive colour reaction, a new method for the extraction and spectrophotometric determination of cerium(IV) has been developed. The effects of foreign ions and sever al experimental variables on the extraction a...

We used halloysite, a nano-sized natural mineral, and high surface area montmorillonite as supports for nano-sized Mn oxides to synthesize efficient water-oxidising catalysts. The composites were synthesized by an easy and simple procedure, and characterized by scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectrosco...

Water oxidation catalysis constitutes the bottleneck for the development of energy-conversion schemes based on sunlight. To date, state-of-the-art homogeneous water oxidation catalysis is performed efficiently with expensive, toxic and earth-scarce transition metals, but 3d metal-based catalysts are much less established. Here we show that readily available, environmentally benign iron coordina...