A surface radiator includes a light-emitting semiconductor component and a housing body. The housing body has a cooling channel forming part of a fluid path from an inlet opening to a return opening. A transparent emission window overlies the light-emitting semiconductor component. The housing body provides an attachment surface spaced apart from the emission window for the light-emitting semiconductor component. The arrangement of the emission window on the housing body is formed in a fluid-tight manner. The housing body, the semiconductor component and the emission window delimit an emission chamber. The fluid path is defined by a first cooling channel, which extends from the inlet opening through the housing body to an orifice opening, the emission chamber, and a second cooling channel, which extends from the discharge opening through the housing body to the return opening. The coolant is an electrically insulating liquid, which is transparent for the incident radiation.

The present invention provides a photolytic converter for converting reactant molecules in a fluid sample into product molecules by photolytic dissociation with electromagnetic radiation. The converter has a reaction chamber in communication with one or more electromagnetic radiation sources, an inflow conduit for conveying the fluid sample into the reaction chamber, and an outflow conduit for conveying the fluid sample out of the reaction chamber into a receptacle, wherein at least one of the first and outflow conduits extends into the reaction chamber. The receptacle can comprise detection means for generating a signal indicative of a concentration of product molecules in the processed fluid sample.

A device includes an insulated reaction chamber, light sources above a stirring module, the light sources surrounding the reaction chamber, and holders containing reaction vessels, the holders configured to fit within the insulated reaction chamber in a manner that enables an even distribution of light between the reaction vessels.

Disclosed is a method of irradiating a composition having water and hydrogen-terminated nanodiamonds with light that generates water-solvated electrons from the nanodiamonds. The method can be used to degrade fluoroalkyl compounds such as perfluorooctane sulfonate.

A UV oven for curing an applied coating on a part, includes a housing having a top wall, a bottom wall, and side walls that enclose an interior volume of the housing. The UV oven further includes a first shutter and a second shutter located on the side walls and configured to be selectively opened to selectively allow the part to enter or exit the interior volume of the housing. The UV oven further includes a conveyor secured to the housing and having a surface on which the part may be supported and at least one UV lamp supported within the housing by a carriage that is movable with respect to the housing. A method of curing an applied coating on a part is further disclosed.

The present disclosure relates generally to reactor systems that include (a) a housing having an interior surface that may be at least partially reflective, (b) at least one reactor cell disposed within an interior of the housing, the at least one reactor cell including an enclosure and a plasmonic photocatalyst on a catalyst support disposed within the at least one enclosure, where the enclosure is optically transparent and includes at least one input for a reactant to enter the at least one cell and at least one output for a reformate to exit the at least one cell and (c) at least one light source disposed within the interior of the housing and/or external to the housing.

Methods and systems are provided for ultra-violet curing, and in particular, for ultra-violet curing of optical fiber surface coatings. In one example, a curing device includes a first elliptic cylindrical reflector, with a second elliptic cylindrical reflector housed within the first elliptic cylindrical reflector. The first elliptic cylindrical reflector and second elliptic cylindrical reflector have a co-located focus, and a workpiece to be cured by the curing device may be arranged at the co-located focus.

Processes for converting methane into methanol are disclosed in which methane, water, and a supported chromium (VI) catalyst are contacted with a light beam at a wavelength in the UV-visible spectrum in an oxidizing atmosphere in a single reactor to form a reaction product comprising methanol, followed by discharging a reactor effluent containing the reaction product from the single reactor, and then separating methanol from the reaction product. Processes to produce methanol using additional reactors also are described, as well as related methanol production systems.

A cassette system capable of a germicidal treatment of highly opaque liquids, featuring a filter, which prevents wavelengths above the UV-C spectrum reaching the liquid being treated, one or more spiral-shaped tubes extending from an inlet end to an outlet end creating a fluidic pathway, and one or more light sources illuminating the one or more spiral-shaped tubes, wherein the one or more light sources emit light in a wavelength range between 180-300 nm.

An optical fiber reactor includes a reaction chamber defining an inlet at a first end of the reaction chamber and an outlet at a second end of the reaction chamber, a multiplicity of side-emitting optical fibers extending from the first end toward the second end, and a light source optically coupled to the optical fibers and configured to irradiate the photocatalyst on the multiplicity of side-emitting optical fibers from an interior of each of the optical fibers at a selected wavelength. The inlet is configured to receive an input gas including a contaminant and the outlet is configured to allow egress of a treated gas from the reaction chamber. The exterior surface of each optical fiber of the multiplicity of optical fibers is coated with a photocatalyst, which is configured to reduce a concentration of the contaminant in the reaction chamber through photocatalytic oxidation or reduction of the contaminant.