Abstract: The invention relates to a method for producing, applying and fixing a multilayer surface coating (2a, 3a) on at least one surface (1a) to be coated of a host substrate (1) in order to produce a host substrate assembly. Starting with a fixative product (2) and a functional product (3) based on single-walled or multi-walled graphene, the method consists in successively applying: a layer (2a) of fixative product to the or to each surface (1a) to be coated of the host substrate (1); and a layer of the functional product to said fixative layer (2a). The assembly can be finished with a protective layer deposited directly onto the layer (3a) that contains the functional product. The invention also relates to a host substrate assembly which can be obtained by said method, a heating element, an anti-corrosion and/or anti-fouling/dirt-repelling element and a hydrophobic element each comprising such an assembly.

Abstract: The present application is directed to a device which serves to capture microparticles in suspension in the air and which has no active means of ventilation and no means of electrical energy supply. The device comprises a structured support traversed by a large number of openings with a minimum dimension of between 1 millimetre and 15 mm, the structured support having a void fraction of greater than 80%, the structured support being coated with a medium for capturing the microparticles in suspension in a flow of air, the medium being chosen from among: vegetable oils, mineral oils, synthetic or semi-synthetic oils, water-soluble lubricants, silicone oils, animal fat, the structured support coated with the capturing medium being configured to be traversed by a flow of air at a linear speed of between 0.1 and 5 m/s without causing a pressure drop of more than 300 Pa, preferably without causing a pressure drop of more than 250 Pa.

Abstract: The invention relates to a method for producing, applying and fixing a multilayer surface coating (2a, 3a) on at least one surface (1a) to be coated of a host substrate (1) in order to produce a host substrate assembly. Starting with a fixative product (2) and a functional product (3) based on single-walled or multi-walled graphene, the method consists in successively applying: a layer (2a) of fixative product to the or to each surface (1a) to be coated of the host substrate (1); and a layer of the functional product to said fixative layer (2a). The assembly can be finished with a protective layer deposited directly onto the layer (3a) that contains the functional product. The invention also relates to a host substrate assembly which can be obtained by said method, a heating element, an anti-corrosion and/or anti-fouling/dirt-repelling element and a hydrophobic element each comprising such an assembly.

Abstract: Some embodiments are directed to a new methodology aimed at preparing highly N-doped mesoporous carbon macroscopic composites, and their use as highly efficient heterogeneous metal-free catalysts in a number of industrially relevant catalytic transformations.

Abstract: The present invention relates in particular to a laminar nanomaterial/natural polymolecular system nanocomposite in which the nanomaterial is an exfoliated and/or dispersed laminar material, and the polymolecular system has a hydrophilic-lipophilic balance (HLB)?8. The present invention also relates to a laminar nanomaterial/natural polymolecular system nanocomposite colloid in a polar solvent, in which the concentration of exfoliated/dispersed nanomaterial in the polar solvent is ?1 g/L, and in which the nanomaterial is an exfoliated and/or dispersed laminar material, and the natural polymolecular system has a hydrophilic-lipophilic balance ?8. The present invention also relates to a process for preparing a nanocomposite colloid according to the invention, and also to a process for exfoliating and/or dispersing a laminar material.

Abstract: Some embodiments are directed to a new methodology aimed at preparing highly N-doped mesoporous carbon macroscopic composites, and their use as highly efficient heterogeneous metal-free catalysts in a number of industrially relevant catalytic transformations.