2results about How to "Change charge distribution" patented technology

This invention provides a permeable reactive wall process and its application for simultaneously removing hexavalent uranium and sulfate from groundwater. The permeable reactive wall process consists of a first treatment unit and a second treatment unit arranged sequentially along the water flow direction. The first treatment unit is filled with a first reaction medium, including zero-valent iron, sulfur-modified coconut shell charcoal, and sulfate-reducing bacteria. The second treatment unit is filled with a second reaction medium, including zero-valent iron, ferric oxide, sulfur-modified coconut shell charcoal, and *Priestia* sp., a non-pathogenic and environmentally friendly bacterium that can simultaneously remove uranium from water through adsorption and reduction. The composite permeable reactive wall process provided by this invention has strong resistance to interference from other substances in the water. When used to simultaneously remove sulfate and hexavalent uranium from groundwater at 15–35°C, the removal rates of both sulfate and uranium in the groundwater are greater than or equal to 90%.

The invention belongs to the technical field of perovskite solar cell material preparation, and particularly relates to a method for inhibiting agglomeration of NiOx dispersion liquid. According to the method, the SnO2 nanoparticles are directly adopted as the additive, operation is convenient, no purification step is needed, and the stable NiOx dispersion liquid can be obtained. The NiOx dispersion liquid prepared by the preparation method disclosed by the invention can be used for effectively inhibiting gathering and providing a longer-time processing window; meanwhile, the NiOx film prepared by using the NiOx dispersion liquid has higher conductivity. Other organic molecules do not need to be introduced into the NiOx dispersion liquid to coordinate with NiOx, so that subsequent SAM molecule attachment is facilitated; and a basis is provided for a high-efficiency perovskite solar cell.