Abstract: The present invention provides a process for the formation of a coating comprising peroxynanoparticles of metals selected from the group consisting of: Ga, Ge, As, Se, In, Sn, Sb, Te, Tl, Pb and Bi on a solid substrate, comprising providing a basic solution containing at least a first metal selected from said group and hydrogen peroxide, and contacting said solution with a solid substrate having oxygen-containing chemically reactive groups on its surface.

Abstract: The invention relates to anode materials suitable for use in batteries, such as lithium ion batteries and sodium ion batteries. In particular, the anode material is a reduced graphene oxide/metal sulfide composite. Methods for forming the reduced graphene oxide/metal sulfide composite are also disclosed.

Abstract: A composite of graphene oxide and PTZ that may further entrap a redox enzyme. This composite can be used for detecting the substrate of the redox enzyme in a sample or for producing an acid byproduct of the enzymatic reaction. Furthermore, provided herein is a kit which includes a composite of graphene oxide and PTZ entrapping a redox enzyme and means for connecting the entrapping composite to a source of electricity.

Abstract: The invention relates to anode materials suitable for use in batteries, such as lithium ion batteries and sodium ion batteries. In particular, the anode material is a reduced graphene oxide/metal sulfide composite. Methods for forming the reduced graphene oxide/metal sulfide composite are also disclosed.

Abstract: The present invention provides a process for the formation of a coating comprising peroxynanoparticles of metals selected from the group consisting of: Ga, Ge, As, Se, In, Sn, Sb, Te, Tl, Pb and Bi on a solid substrate, comprising providing a basic solution containing at least a first metal selected from said group and hydrogen peroxide, and contacting said solution with a solid substrate having oxygen-containing chemically reactive groups on its surface.

Abstract: The invention provides compounds which are -amino acid hydrogen peroxide solvates, wherein the side chain of the -amino acid has no basic nitrogen. A process for preparing the compounds and uses thereof are also described.

Abstract: A method for evaluating the integrity of microfiltration, ultrafiltration and nanofiltration membranes, which method comprises passing a liquid that contains a substantially mono-dispersed population of nano-probes through said membrane to form a permeate and testing said permeate for the presence of said nano-probes, wherein the non-detection of said nano-probes in said permeate indicates that said membrane is substantially intact.

Abstract: The present invention relates to a natural extract from fungus, cyanobactria, plants, lichens or a mixture thereof having an ultra violet absorbency in the range of 220 nm to 425 nm wherein said extract is obtained by contacting said fungus, cyanobacteria, plant, lichen or a mixture thereof with an C1-7-alcoholic solution. The present invention further relates to a compound of formula I purified from fungus and to cosmetical compositions comprising a natural extract or a compound of formula I.

Abstract: The invention provides a planar chromatographic plate comprising a supported homogeneous thin porous film of ceramic material produced by sol-gel technology the film being provided with a porous network enabling elution through the film whereby planar chromatographic separation of chemicals or biochemicals can be carried out therewith.

Abstract: An electrochemical electrode, comprising carbon particles distributed in porous, inorganic ceramic material produced by sol-gel technology, wherein the particles form a continuous network which enables conductivity throughout the sol-gel derived matrices.

Abstract: A process for qualitative or quantitative determination of a reactive chemical contained in a liquid sample by forming doped sol-gel glass pellets from a metal alkoxide, arranging the porous doped sol-gel glass pellets in a glass tube, contacting a liquid sample containing a reactive chemical with the porous doped sol-gel glass pellets contained in the glass tube, and measuring a length of a stained portion of the glass tube resulting from a color change in the sol-gel glass pellets. The sol-gel glass pellets are formed by a gelling step conducted at room temperature in the presence of a colorimetric reagent dopant which produces a color change in the presence of the reactive chemical, and a drying step conducted at not greater than 41.degree. C. The doped sol-gel glass pellets contain the colorimetric reagent dopant encapsulated therein and the encapsulated colorimetric reagent dopant is color changeable in the presence of the reactive chemical in the pores of the doped sol-gel glass pellets.

Abstract: Chromatography processes employ doped sol gel glasses as chromatographic media. In one embodiment, a process for qualitative or quantitative determination of a reactive chemical contained in a sample comprises passing the sample through a column or planar chromatography apparatus wherein the apparatus includes packing or plates containing a porous doped sol gel glass. The doped sol gel glass is formed form a metal alkoxide and contains a compound encapsulated therein which is reactive with the reactive chemical in the pores of the doped sol gel glass. In another embodiment, a process for analyzing a gas sample containing a reactive chemical comprises passing the gas sample through glass capillaries or tubes containing porous doped sol gel glass pellets. The pellets are formed from a metal alkoxide and contain a colorimetric reagent encapsulated therein which is reactive with the reactive chemical in the pores of the pellets.