A water filter includes a housing, a spoiler unit, a power generation unit, a sterilization unit and a purification unit. The housing includes an input portion, an output portion and a first thread portion. The spoiler unit is provided in the housing and corresponds to the input portion. The power generation unit is provided in the housing and is coupled to the spoiler unit. The sterilization unit is provided in the housing and is electrically connected to the power generation unit, and includes a sterilization light source. The purification unit is provided in the housing and corresponds to the output portion and the sterilization unit, and includes a plurality of purification particles. Thus, the water filter is enabled to be coupled to a faucet using the first thread portion, allowing tap water to flow toward the direction from the input portion to the output portion.

A specially functionalized composite filter material with a high specific surface area is used to adsorb PFAs from potable water. In a preferred embodiment, the base filter material is granular activated carbon (GAC), which is sequentially coated with a thin layer of polydopamine, a thin layer of partially oxidized iron, and a thin coating of octadecylamine. After PFAs are adsorbed onto the coated GAC particles, the PFAs are removed by a rinsing process, and remain in the rinse effluent. GAC particles are recovered and recoated as needed to restore their adsorptive capacity. The PFA-containing effluent is treated using photochemical processes to destroy the PFA molecules. The now PFA-free effluent can be disposed of as a non-hazardous material. The composite filter material works in systems ranging from small passive systems for personal use to large scale, high-flow-rate utility water treatment systems.

The invention relates to a photocatalytic oil-water separation material and a preparation method thereof, the method including the following steps: cleaning a base material and a metal-doped material, and drying for later use; preparing a mixed solution of an amine monomer and an acid-alkali buffer reagent, soaking the base material in the mixed solution, and reacting under an oscillation condition, to obtain the base material attached with amine monomer polymer; dissolving a soluble metal additive and an organic ligand reagent into an organic solvent, and performing ultrasonic stirring uniformly, to obtain a metal organic framework material (MOF) reaction solution with photocatalytic performance; and placing the metal-doped material, the base material attached with the amine and the MOF reaction solution into a reaction kettle for performing hydrothermal reaction, cleaning and drying the reacted base material, to obtain the photocatalytic oil-water separation material.

A water container for purifying water. The water container includes an opening configured to receive water, a container body arranged to enclose the water and a water purifying unit configured to purify the water. The water purifying unit includes an at least partially transparent plate, which includes a coating of metal-oxide nanoparticles on a first side facing the container body, wherein the first side is configured to be in contact with the water, and an ultraviolet light module configured to radiate towards a second side of the at least partially transparent plate such that light from the ultraviolet light module at least partially passes through the at least partially transparent plate. Also, a method for purifying water within a water container.

Disclosed is a preparation method of a nanometer metal oxide supported carrier based on anodic oxidation, comprising: Step 1: adding electrolyte to a reaction pool, and fixing the cathode and the anode oppositely, wherein the cathode is a metal plate that is identical to the nano-metal oxide, and the anode is a carrier metal material; Step 2: stirring the electrolyte at a constant speed, wherein the revolution speed is not lower than 500 rpm; Step 3: switching power on; setting the output voltage between 10 v and 50 v; and subjecting the metal plate of the anode to anodic oxidation reaction, wherein metal oxide nanotubes/nano particles are generated on the surface; under the action of stirring, the metal oxide nanotubes/nano particles on the anode surface are dissolved and shed off into the electrolyte; under the action of the electric field force, the dissolved and shed-off nano fragments migrate towards the cathode and are adhered to the surface of the cathode material, thereby forming a nano-metal oxide film. The film preparation method according to the disclosure offers advantages such as mild condition, simple instrumentation, easy operation, and low cost; the prepared film has a good load effect such that the metal oxide can hardly be shed off.

The present invention discloses a bismuth oxide (Bi.sub.2O.sub.3)/bismuth subcarbonate ((BiO).sub.2CO.sub.3)/bismuth molybdate (Bi.sub.2MoO.sub.6) composite photocatalyst, including a Bi.sub.2MoO.sub.6 photocatalyst, where Bi.sub.2O.sub.3 and (BiO).sub.2CO.sub.3 nanosheets are introduced to a surface of the Bi.sub.2MoO.sub.6 through addition of Na.sub.2CO.sub.3 and roasting. The present invention also discloses a preparation method of the Bi.sub.2O.sub.3/(BiO).sub.2CO.sub.3/Bi.sub.2MoO.sub.6 composite photocatalyst which is specifically implemented by the following steps: step 1: preparing a Bi.sub.2MoO.sub.6 photocatalyst; step 2: introducing Bi.sub.2O.sub.3 and (BiO).sub.2CO.sub.3 nanosheets to a surface of the Bi.sub.2MoO.sub.6 photocatalyst obtained in step 1 through addition of Na.sub.2CO.sub.3 and roasting to obtain the Bi.sub.2O.sub.3/(BiO).sub.2CO.sub.3/Bi.sub.2MoO.sub.6 composite photocatalyst. The photocatalyst of the present invention has no agglomeration, a wide responsive range of visible light, a significantly improved catalytic activity compared with a Bi.sub.2MoO.sub.6 alone, and excellent reusability. Moreover, the preparation method is simple with mild conditions, desired controllability and convenient operation.

Production of decontaminated water from contaminated water using a vessel, an inlet to the vessel wherein the contaminated water is introduced into the vessel, an outlet to the vessel wherein the decontaminated water is removed from the vessel, a plasmonic-photocatalyst membrane connected to the vessel, plasmonic nanoparticles or nanostructures connected to the plasmonic-photocatalyst membrane, and a source of ultraviolet light that directs ultraviolet light onto the vessel, the plasmonic-photocatalyst membrane, the plasmonic nanoparticles or nanostructures, and the contaminated water to produce the decontaminated water from the contaminated water.

The present invention relates to a new method for creating nanopores in single layer molybdenum disulfide (MoS.sub.2) nanosheets (NSs) by the electrospray deposition (ESD) of silver ions on a water suspension of the former. Electrospray deposited silver ions react with the MoS.sub.2 NSs at the liquid-air interface resulting in Ag.sub.2S nanoparticles (NPs) which goes into the solution leaving the NSs with holes of 3-5 nm diameter. Specific reaction with the S of MoS.sub.2 NSs leads to Mo-rich edges. Such Mo-rich defects are highly efficient for the generation of active oxygen species such as H.sub.2O.sub.2, under visible light, which causes efficient disinfection of water. The holey MoS.sub.2 NSs shows 10.sup.5 times higher efficiency in disinfection compared to normal MoS.sub.2 NSs. Developed a conceptual prototype and tested with multiple bacterial strains and a viral strain, demonstrating the utility of the method for practical applications.

A non-biological, visible light photoreactor is provided, the photoreactor comprising: a fiberglass sheet, which includes fibers and interstitial spaces between the fibers; and a low iron oxide content, iron-doped titanium dioxide film on the fibers, the film containing about 0.5 atomic percent iron and an iron oxide content of less than about 0.075 atomic percent iron. The photoreactor may be configured as a tube with a light emitting diode housed therein, a cap at one end of the tube that has inlets to accept pressurized air and a plate at the other end of the tube, such that the air is forced through the photoreactor.

The present invention provides a formulation and method for preparing a fibrous material comprising nanofibers. The formulation comprises (a) at least one polymer, (b) at least one solvent in which the at least one polymer is dissolved to provide a polymer solution, and (c) at least one functional additive that imparts functionality to the fibrous material. The at least one functional additive is dissolvable or suspensible in the polymer solution. The formulation is able to remove or reduce the concentration of bacteria, viruses and heavy metals while maintaining high filtration efficiency. The invention also relates to a fibrous material prepared by the formulation and applications of the fibrous material.