48results about How to "Uniform and firm load" patented technology

The invention relates to the removal of arsenic in drinking water, in particular to a drinking-water arsenic-removing device which comprises a closed hollow cylinder; the upper part of the cylinder is provided with a water outlet, and the lower part of the cylinder is provided with a water inlet; two cylindrical filter elements are vertically arranged inside the cylinder in parallel; the bottom of the filter element on the right is communicated with the water inlet of the cylinder, and the top thereof is provided with a water outlet; the middle and upper part, the middle part and the middle and lower part of the filter element on the right are respectively provided with a detachable hole-born supporting board along radial direction; the three supporting boards divide the cavity in the filter element on the right into four parts which are a filter bed A, a filter bed B, a filter C and a filter D from top to bottom; the bottom of the filter element on the left is provided with a water inlet, and the top of the filter element on the left is communicated with the water outlet of the cylinder; and loaded drinking-water arsenic-removing nano-adsorbing agent is filled in the filter element on the left. The arsenic-removing device has wide application range and can reduce arsenic content in the drinking water to safe standard, thus being suitable for the drinking requirement of scattered towns and citizens.

A loaded TiO 2 The preparation method of the composite photocatalyst comprises the following steps: adding triethylamine to the mixed solution of soluble zinc salt, terephthalic acid and the first organic solvent, making terephthalic acid deprotonation and zinc ion self-assembly MOF‑5, filtered, washed and dried to obtain MOF‑5 powder; the hydrolyzable titanium source is hydrolyzed with water in a second organic solvent to obtain a first solution containing nano-titanium dioxide; the first solution is concentrated, Increase the concentration of the nano-titanium dioxide sol to obtain a second solution; and add the MOF-5 powder to the second solution, fully mix by ultrasonic vibration, filter, wash and dry to obtain TiO 2 / MOF‑5 composite photocatalyst.

A loaded TiO 2 The preparation method of the composite photocatalyst comprises the following steps: placing the mixed solution of soluble zinc salt, 2-methylimidazole and the first organic solvent in an autoclave and heating the reaction to deprotonate 2-methylimidazole and Zinc ions are self-assembled into ZIF-8, filtered, washed and dried to obtain ZIF-8 powder; the hydrolyzable titanium source is hydrolyzed with water in a second organic solvent to obtain the first solution containing nano-titanium dioxide; Describe the first solution, increase the concentration of the nano-titanium dioxide sol to obtain a second solution; and add the ZIF-8 powder to the second solution, fully mix by ultrasonic vibration, filter, wash and dry to obtain TiO 2 / ZIF‑8 composite photocatalyst.

The invention discloses a UV assistant electrostatic atomization moulding system and a manufacture method for a titanium dioxide coating. The method is characterized by integrating micro-arc oxidation technology and electrostatic atomization technology, and specifically comprises the steps of electrolyte preparation, micro-arc oxidation, drying, thermal treatment, electrostatic atomization and photoreduction, so that the porous titanium dioxide coating doped with silver nanoparticles is manufactured. According to research, the titanium dioxide coating doped with the silver nanoparticles has good bacterium resistance and biological activity. The manufacture method is simple, high in operability and low in raw material cost; and the whole manufacture process is performed in an air atmosphere, and no special devices are needed.

The invention relates to the technical field of electrochemical materials, in particular to a nanofiber-based flexible array structure electrode and a preparation method thereof. The nanofiber-based flexible array structure electrode is prepared from an inner layer spinning solution and an outer layer spinning solution through electrostatic spinning, carbonization, hydrothermal growth and electro-deposition, the inner layer spinning solution is prepared from polyacrylonitrile (PAN), purified terephthalic acid (PTA), acidized carbon nanotubes (AC-MWNTs) and a solvent, and the outer layer spinning solution is prepared from polyvinylpyrrolidone (PVP), inorganic zinc salt, PTA and a solvent. According to the preparation method of the nanofiber-based flexible array structure electrode, the flexibility of carbon fiber is improved, and ZnO can be directly added into a precursor in the coaxial spinning process, so that the outer surface of the carbon nanofiber is loaded with nano ZnO evenly and firmly, the seed crystal coating process is omitted, thus the method is simple, efficient, high in universality, low in cost and environmentally friendly, an obtained product integrates the flexiblecharacteristic and bimetallic pseudocapacitance performance, and can form an independent electrode.

The invention provides a preparation technology for coating a filter material with an efficient denitration catalyst with a ring opening polymerization method. Firstly, a PPS (polyphenylene sulfide) filter material is pretreated with strong acid, so that more active oxygen-containing functional groups such as hydroxyl, carboxyl and the like are obtained on the surface. The PPS filter material can be used as a modified monomer due to existence of these oxygen-containing functional groups, then, acrylamide is uniformly dispersed on the PPS surface under the ultrasonic action, potassium permanganate is used as an initiator, a ring opening polymerization reaction is conducted on the PPS surface, meanwhile, a produced manganese catalyst firmly coats the PPS surface, and the compound filter material with the efficient denitration function is prepared.