46results about How to "Efficient Photocatalytic Degradation" patented technology

A hierarchical pore nanoporous copper loaded cuprous oxide nanowire composite material is a thin belt and comprises an amorphous matrix, nanoporous copper which covers the amorphous matrix, and a porous cuprous oxide nanowire which is loaded on the surface of the nanoporous copper, wherein the cross section of the composite material is of a five-layer structure, and the intermediate core layer isthe amorphous matrix; the nanoporous copper covers the surfaces of two sides of the intermediate core layer; the porous cuprous oxide nanowire is loaded on the surface of the nanoporous copper at thetwo sides; the nanoporous copper layer at one side is 6-12 microns in thickness; the flexible belt is 20-40nm in width; the pore diameter is 15-30nm; the nanowire layer at one side is 3-12 microns inthickness; the nanowire is 5-10 microns in length and 5-10nm in width; nanopores being 0.5-2nm are distributed in the nanowires. The method is simple in processes, and short in preparation period; theprepared composite material is high in mechanical completeness and can be recycled, so that the economic benefit is improved.

The invention discloses a cadmium coordination polymer of hydroxypyrazole carboxylate for visible light catalytic degradation of organic dyes and its preparation and application. The chemical expression of the cadmium coordination polymer is [Cd(hpcH)(H 2 O)(DMF)] n , where hpcH 3 is a 5-hydroxypyrazole-3-carboxylic acid containing 1 metal Cd per asymmetric unit 2+ ion, a deprotonated organic ligand (hpcH 2‑ ), a coordinated water molecule and a coordinated DMF molecule, Cd 2+ The ions are linked by 5-hydroxypyrazole-3-carboxylic acid ligands to form a two-dimensional layered structure. The synthesis method of the cadmium coordination polymer is simple and the yield is high; it has stable photocatalytic dye degradation performance at room temperature, can efficiently photocatalyze the degradation of methylene blue (MB) azo dye, and has a high recycling rate; at the same time, the The structure of the polymer is stable, insoluble in water and common organic solvents, which can avoid secondary pollution problems.

The invention discloses a silver phosphate modified magnetic separation hollow composite photocatalyst, which is composed of ZnFe 2 o 4 , ZnO and Ag 3 PO 4 Composite; the particle size of the hollow microsphere is 50-1000nm, and the thickness of the hollow shell is 1-100nm. The invention also discloses its preparation method: mixing zinc salt and iron salt solution into phenolic resin microspheres, ultrasonic aging, drying, calcining, and then adding AgNO 3 Ethanol solution and Na 3 PO 4 Ethanol solution, stirring, and drying. The present invention consists of ZnFe 2 o 4 , ZnO and Ag 3 PO 4 It forms a heterojunction with a waterfall structure, which promotes the effective separation of photogenerated electrons and holes, thereby improving its photocatalytic activity; ZnFe 2 o 4 It has magnetism, is easy to separate and recover, and has a simple preparation method.

The invention discloses a nano-porous copper loaded ultrafine oxide copper nanowire composite material and a preparation method and application thereof. The material is a rod, and comprises an amorphous basal body, nano-porous copper covering the amorphous basal body, and ultrafine copper oxide nanowires loaded on the surface of the nano-porous copper; the amorphous basal body is CuxZryAlz alloy component, wherein x, y and z are atomic percents; x is not bigger than 50 and not smaller than 45, y is not bigger than 50 and not smaller than 45, z is not bigger than 10 and not smaller than 5; x+y+z is 100; the nano-porous copper has the layer thickness of 85-135 microns, the ligament width of 118-138 nm and the aperture size of 30-100 nm; the nanowires are 4-10 microns long and 5-15 nm wide; and every 20-30 nanowires are clustered as one bundle. The copper oxide nanowires are constructed on the nano-scale basal body for the first time. Nanowire copper oxide is tightly combined with the surface of the nano-porous copper metal, so that the prepared material achieves efficient photocatalytic degradation of organic dye.

A nanoporous copper-loaded porous cuprous oxide nanosheet composite material, the composite material is a rod, including an amorphous substrate, nanoporous copper covered on the amorphous substrate, and porous cuprous oxide nanosheets supported on the surface of the nanoporous copper sheet; the amorphous matrix is ​​Cu x Zr y Ti z al w Alloy composition, where x, y, z, and w are atomic percentages, 45≤x≤50, 20≤y≤25, 25≤z≤30, 5≤w≤10 and x+y+z+w=100; where The thickness of the nanoporous copper layer is 80-140 μm, the ductile bandwidth is 110-140 nm, and the pore size is 40-100 nm; the thickness of the nano-sheet is 50-90 nm, the length of the nano-sheet is 30-80 nm, and the width is 5-10 nm. 4nm. The preparation process of the invention is simple and the preparation period is short; the prepared composite material has good mechanical integrity and thermal stability, can be recycled and reused, and the economic benefit is improved.

The present invention relates to a Bi 2 o 3 / (BiO) 2 CO 3 The invention relates to a synthesis method of a composite photocatalytic material, which belongs to the technical field of chemical industry. Using Na 2 CO 3 , bismuth citrate, and NaOH three kinds of chemical reagent raw materials are weighed according to the molar ratio, mixed into double distilled water and stirred for a certain period of time. After drying to obtain the final product Bi 2 o 3 / (BiO) 2 CO 3 Composite photocatalytic materials. Its surface morphology, microstructure, and photocatalytic activity were measured, and the hierarchical rosette Bi 2 o 3 / (BiO) 2 CO 3 The composite photocatalytic material has a great improvement in the degradation of rhodamine B and other dyes under different light sources. The production process of this product is simple and practical, the product performance is stable, and it has considerable applicability to various dyes.

The invention provides a synthesis method and application for imprinting-doped mesoporous TiO2 microspheres. The synthesis method includes dissolving 1-5ml of titanium source substances into 100-200ml of organic solution, adding 0.1-0.3g of catalytic into the organic solution, adding 0.1-0.5g of target molecules used as imprinting molecules while stirring the mixture, and further adding metal salt with the molar ratio ranging from 0.1% to 8% relative to a titanium source so as to introducing doping ions; and continuing stirring for 1-12 hours, then enabling the solution to react in a high-temperature and high-pressure kettle at the temperature ranging from 80 DEG C to 180 DEG C for 3-6 hours, centrifugally washing to obtain white solid, placing the white solid in a muffle furnace at the temperature ranging from 400 DEG C to 450 DEG C, keeping the temperature for 2-4 hours and then obtaining the imprinting-doped mesoporous TiO2 microspheres. The prepared materials are used for degrading target organic pollutant in water, have higher photocatalytic activity as compared with pure TiO2(P25), and are capable of selectively degrading the target pollutant. In addition, the imprinting-doped mesoporous TiO2 microspheres have a wider photoresponse range as compared with pure TiO2 undoped with imprinting, and have high visible light absorption capacity.