NOVELTY - A bicontinuous porous body, comprises: several macropores having a diameter of greater than 0.1 mu m, where the macropores interconnect, forming a continuous network of pores that spans the material, permitting the flow of liquid or gas into and through the material, and where the wall of the macropores comprise a continuous layer of metal and/or metal oxide.    USE - As bicontinous porous body (claimed) used as packing materials in chromatography, as catalysts, or as electrocatalysts, for chemical conversions such as combustion of liquid and gaseous fuels, conversion of liquid and gaseous fuels to electricity, and conversion of electricity to liquid and gaseous fuels; for assisting heat transfer or storing release electrical charge; for converting light to electric energy; for forming porous carbon materials; for production of microstructured and nanostructured porous carbon materials as templates for other materials, microstructured and nanostructured porous carbon bodies as catalyst support, microstructured, and nanostructured porous carbon bodies as current collectors in capacitors and batteries, microstructured and nanostructured porous carbon bodies as filters, microstructured and nanostructured porous carbon bodies as combined catalyst support and filter; in chromatography e.g. gas, HPLC, flash, or thin-layer chromatography, as the stationary phase; fuel cells as a fuel cell separator.    ADVANTAGE - The bicontinuous porous body is able to separate or analyze an analyte or target molecule from a given sample or to remove impurities from a sample e.g. in disease diagnoses there is often a particular analyte that is produced by or part of a pathogen, and physicians use the presence or absence of that analyte to determine whether the patient is infected with the pathogen.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included producing a metal and/or metal oxide porous body involving: contacting a porous template and a composition comprising a metal salt to form a mixture, where the metal salt has a decomposition temperature; maintaining the mixture below the decomposition temperature of the metal salt until a desired spatial distribution of the metal salt in the porous template is obtained; and then heating the mixture to above the decomposition temperature of the metal salt in the presence of a reducing agent or inert atmosphere to produce the metal and/or metal oxide porous material; and optionally repeating steps first to third with the same metal salt or with a different metal salt.