The present invention concerns the elimination of heavy metals, in particular mercury and possibly arsenic and lead, present in a gaseous or liquid effluent by means of a capture mass comprising a support essentially based on alumina obtained by the gel method and at least one element selected from the group constituted by copper, molybdenum, tungsten, iron, nickel and cobalt. The invention is advantageously applicable to the treatment of gas of industrial origin, synthesis gas, natural gas, gas phase condensates and liquid hydrocarbon feeds.

A method of water decontamination includes contacting a MoO.sub.3@Al.sub.2O.sub.3MgO nanocomposite material with an aqueous solution to form a reaction mixture. The aqueous solution includes one or more contaminants. The method further includes mixing the reaction mixture and collecting a filtrate. The filtrate has fewer of the one or more contaminants than the aqueous solution. The MoO.sub.3 content of the MoO.sub.3@Al.sub.2O.sub.3MgO nanocomposite material ranges from 1 wt. % to 20 wt. % of the total weight of the MoO.sub.3@Al.sub.2O.sub.3MgO nanocomposite material. The MoO.sub.3@Al.sub.2O.sub.3MgO nanocomposite material has a surface area of greater than or equal to 50 m.sup.2/g.

The present disclosure describes sorbent material products for the removal of mercury and other toxic gases. These sorbent material products may include a halide, copper, and molybdenum. Methods of preparing the sorbent material products disclosed herein and methods of removing mercury from a fluid stream using the same are also provided.

A material for separating and pumping oxygen is disclosed. The material is a zeolite doped with a chemical element having an electron density of between 30 kJ/mol and 150 kJ/mol. The material is configured for controllable oxygen desorption between 150 C. and 300 C. and pumping the released oxygen into an area having an ambient pressure of less than 100 pascals.

A method of water decontamination includes contacting a MoO.sub.3@Al.sub.2O.sub.3MgO nanocomposite material with an aqueous solution to form a reaction mixture. The aqueous solution includes one or more contaminants. The method further includes mixing the reaction mixture and collecting a filtrate. The filtrate has fewer of the one or more contaminants than the aqueous solution. The MoO.sub.3 content of the MoO.sub.3@Al.sub.2O.sub.3MgO nanocomposite material ranges from 1 wt. % to 20 wt. % of the total weight of the MoO.sub.3@Al.sub.2O.sub.3MgO nanocomposite material. The MoO.sub.3@Al.sub.2O.sub.3MgO nanocomposite material has a surface area of greater than or equal to 50 m.sup.2/g.

The present disclosure provides a process for the separation and purification of radium and actinium from acidic solution using composite adsorbents. The process includes preparing polyoxometalates (POMs)-based mesoporous composite metal-infused resins using phosphate recovered from waste buffer solution. The resins are prepared using a modified sol-gel technique to form inorganic composite metal-oxide clusters. Embodiments of the resins include silica-coated composite metal oxide particles, including antimony-vanadium oxide particles, and tungsten-doped mesoporous titanium oxide particles. The resins have differing adsorption affinities for actinium, radium, and other metal ions and may thus be utilized for selectively separating radium and actinium from irradiated thorium targets.

The present invention relates to a method of promoting adsorption of one or more gases to solid particulate material, the method comprising ball milling the solid particulate material (i) in the presence of the one or more gases maintained at a pressure of at least 300 kPa, (ii) using a ratio of milling balls to solid particulate material of at least 60:1, and (iii) at an operating speed of at least 200 rpm.

A selective metamaterial absorber and method for fabricating the same is disclosed. The method includes deposing a first metal layer on a first surface of a substrate and on a plurality of nanowires extending outward from the first surface of the substrate, the plurality of nanowires forming an array on the first surface, the substrate further including a second surface opposite the first surface. The first metal layer may be deposed using conformally sputtering. The substrate and the plurality of nanowires may be composed of silicon, and the first metal layer may be composed of tungsten. The first metal layer may be composed of a material having a penetration depth for a wavelength range of interest. The first metal layer may be at least three times thicker than the penetration depth.

A selective metamaterial absorber and method for fabricating the same is disclosed. The method includes deposing a first metal layer on a first surface of a substrate and on a plurality of nanowires extending outward from the first surface of the substrate, the plurality of nanowires forming an array on the first surface, the substrate further including a second surface opposite the first surface. The first metal layer may be deposed using conformally sputtering. The substrate and the plurality of nanowires may be composed of silicon, and the first metal layer may be composed of tungsten. The first metal layer may be composed of a material having a penetration depth for a wavelength range of interest. The first metal layer may be at least three times thicker than the penetration depth.