5 results about "HYPOPHOSPHITE ION" patented technology

A method of producing a flexible nickel phosphorus coating on a substrate. The substrate includes a dielectric material having a copper layer thereon. The method comprises the steps of: (1) activating the substrate with a palladium activation solution to catalyze the substrate, and 2) contacting the activated substrate with an electroless nickel phosphorus plating bath comprising: (i) a source of nickel ions; (ii) a hypophosphite ion source; (iii) at least one metal complexing agent; and (iv) an organic flexible additive. The nickel-phosphorus plating layer deposited on the substrate shows a columnar grain structure.

A method of producing a flexible nickel phosphorus plating layer on a substrate. The substrate comprises a dielectric material with a copper layer thereon. The method includes the steps of (1) activating the substrate with a palladium activation solution to catalyze the substrate, and (2) contacting the activated substrate with an electroless nickel phosphorus plating solution comprising (i) a source of nickel ions; (ii) a source of hypophosphite ions; (iii) at least one complexing agent; and (iv) an organic flex additive. The nickel phosphorus plating layer deposited on the substrate exhibits a columnar grain structure.

A method of producing a flexible nickel phosphorus plating layer on a substrate. The substrate comprises a dielectric material with a copper layer thereon. The method includes the steps of (1) activating the substrate with a palladium activation solution to catalyze the substrate, and (2) contacting the activated substrate with an electroless nickel phosphorus plating solution comprising (i) a source of nickel ions; (ii) a source of hypophosphite ions; (iii) at least one complexing agent; and (iv) an organic flex additive. The nickel phosphorus plating layer deposited on the substrate exhibits a columnar grain structure.

The present invention provides a method for simultaneously oxidizing and flocculating low-valent phosphorus in wastewater by using an aluminum-based composite agent. Aluminum powder and ferric salts are subjected to ball milling treatment under an inert atmosphere. In the ball-milled material, the surface oxide layer of zero-valent aluminum is destroyed and ferrous salts are generated simultaneously. Zero-valent aluminum and ferric salts couple to activate molecular oxygen and generate strongly oxidizing free radicals and ferric ions. The strongly oxidizing free radicals oxidize hypophosphite ions in the wastewater to phosphite ions, and the ferric ions synergistically oxidize the phosphite ions to orthophosphate ions. In acidic wastewater, aluminum rapidly dissolves and together with ferric salts generates flocs to remove orthophosphate ions through flocculation precipitation, achieving efficient simultaneous oxidation and flocculation removal of low-valent phosphorus in nickel-plating wastewater. The present invention also provides the application of the above method in treating low-valent phosphorus-containing wastewater such as nickel-plating wastewater. The materials of the present invention are widely sourced and low in cost, and the material preparation method is simple, greatly simplifying the treatment process flow and being easy to apply in engineering.

The invention particularly relates to a chemical nickel wastewater treatment method and a chemical nickel wastewater treatment device, and belongs to the technical field of water treatment. According to the method, an electrolytic method, electrodialysis, reverse osmosis and electrodeposition combined process is adopted, BBD is used as an electrolytic anode for complex breaking treatment, metal nickel with high additional value is recycled, no pollutant is discharged, and hypophosphite ions in wastewater are converted into phosphate fertilizer for production. The invention further provides a treatment device for the chemical nickel wastewater, the treatment device is efficient, full-automatic operation is achieved, and the labor cost is reduced.