17results about How to "Strong redox" patented technology

The invention discloses a catalyst for simultaneously removing cyanide and organic matters in wastewater by a peroxymonosulfate oxidation method as well as a preparation method and application of the catalyst, and belongs to the field of chemistry and chemical engineering, in particular to the technical field of catalyst preparation. According to the preparation method, metal oxides such as molybdenum, cerium, vanadium and the like are introduced as a substrate, precise doping of cobalt and nickel and loading of noble metal nanoparticles are performed, and the structural stability and the anti-sintering capability of the catalyst are enhanced through surface modification while uniform distribution of metal elements is ensured, and efficient performance is kept for a long time under high-temperature complex reaction conditions; the catalyst prepared by the method is applied to simultaneous removal of cyanides (free cyanogens and complex cyanogens) and organic matters in wastewater by a peroxymonosulfate oxidation method, has excellent catalytic activity, can quickly reach the degradation rate of 90% or above for 100pmm cyanides (free cyanogens and complex cyanogens) and 200mg / LCOD organic matters in wastewater, and has excellent degradation effect and reaction rate.

The invention provides a cerium-zirconium loaded cobalt titanate solid solution nanosphere water treatment catalyst and a preparation method thereof, and relates to the field of water treatment. The cerium-zirconium loaded cobalt titanate solid solution nanosphere water treatment catalyst comprises nano spherical ferroferric oxide, a cerium-zirconium solid solution, cobalt titanate and D-(-)-quinic acid, the nano spherical ferroferric oxide serves as an inner core, the cerium-zirconium solid solution serves as an electron transport middle layer, the cobalt titanate serves as an active component outer layer, and the D-(-)-quinic acid serves as a morphology control agent. On the basis of the mass of the ferroferric oxide inner core, the mass percentage content of the electron transmission middle layer is 60%-80%, and the mass percentage content of the active component outer layer is 20%-40%; wherein the molar ratio of cerium oxide to zirconium oxide in the cerium-zirconium solid solution is 1: (0.33-3). The catalyst provided by the invention is environment-friendly, not only can efficiently catalyze and reduce p-nitrophenol, but also can be repeatedly used, is simple to regenerate, and has higher economic value and wide market application prospect.

The invention discloses a hydroxyproline rapid detection molecularly imprinted electrochemical sensor as well as preparation and application thereof, and relates to the field of quality safety monitoring of medicinal plants. The preparation method of the molecularly imprinted electrochemical sensor comprises the following steps: preparing the Fc-MWCNTs composite material, preparing the Fc-MWCNTs / GCE, and preparing the molecularly imprinted electrochemical sensor MIP-Fc-MWCNTs (at) GCE. According to the invention, MWCNTs with good conductivity and Fc which has good stability and oxidation-reduction property and is used as an excellent electron transfer medium are used as electrode substrate materials; and the Fc-MWCNTs and the MWCNTs are covalently bonded through an amide reaction to prepare the composite material Fc-MWCNTs which has excellent electron transfer medium characteristics, low potential reproducibility and strong stability and can remarkably improve the electron transfer rate between the electrode surface and an electrolyte. The modified composite material Fc-MWCNTs is modified on the surface of GCE, so that the molecularly imprinted electrochemical sensor MIP-Fc-MWCNTs (at) GCE with high sensitivity, high selective recognition and fast detection is constructed, and the molecularly imprinted electrochemical sensor is used for detecting an index component Hyp of cornu cervi pantotrichum.

The invention relates to a metal palladium and sulfur loaded carbon-based catalyst and a preparation method and application thereof, the catalyst contains a porous carbon material, sulfur and palladium, the content of the sulfur is 0.2-5.0 wt%, and the content of the palladium is 0.2-5.0 wt% based on the total weight of the catalyst; the palladium is loaded on the porous carbon material in the form of monatomic palladium and / or cluster palladium. The catalyst disclosed by the invention is used for preparing hydrogen peroxide through an electro-catalytic oxygen reduction reaction, has excellent catalytic activity and is relatively high in hydrogen peroxide selectivity.

The utility model discloses a clean laboratory ventilation device which comprises a ventilation installation plate, front installation frames are fixedly installed on the two sides of the outer surface of the front face of the ventilation installation plate, a fan motor is installed in the center of the interior of each front installation frame, an output shaft of each fan motor is fixedly connected with an inner rotating shaft, and a plurality of ventilation fan blades are installed on the outer surface of each inner rotating shaft. The ventilation fan blades are circumferentially distributed at equal intervals through the center circle point of the inner rotating shaft, a plurality of strip-shaped ventilation grooves which are linearly distributed at equal intervals are formed in the ventilation installation plate, a rear installation frame is fixedly installed on the back face of the ventilation installation plate through fixing screws, and an air filtering box is fixedly installed on the outer surface of the rear installation frame through fixing bolts. The ventilation device can effectively kill and filter harmful germs, impurities and dust in introduced air, the using effect of the ventilation device is greatly improved, the normal cleanliness of a clean laboratory is guaranteed, laboratory pollution is avoided, and the ventilation device has good practicability and use performance.

The invention belongs to the technical field of biosensors, and relates to an electrochemical immunosensor for amplifying a detection signal by utilizing a nano-enzymatic electroactive molecule ferrocene-tyramine deposition reaction as well as a preparation method and application of the electrochemical immunosensor. According to the invention, an ultra-sensitive split type biosensor based on 96-well plate and nano-enzyme catalytic electroactive molecule ferrocene-tyramine deposition signal amplification is used, the electroactive molecule ferrocene-tyramine is used as a signal amplification element and is labeled on a signal antibody, and a target antigen is detected through a sandwich immune reaction among a capture antibody probe, a target antigen and the signal antibody. The significant amplification of a current detection signal and the sensitive detection of a target antigen are realized. The sensor and ELISA (enzyme-linked immunosorbent assay) are simultaneously used for detecting the SMP30 antibody level in the serum of a clinical liver cancer patient, the result shows consistency, the recovery rate is 93-104%, and the sensor has great popularization and application value for portable and rapid detection of tumor markers.

The utility model discloses a clean laboratory sterilization isolation door which comprises a first isolation door body, a second isolation door body is arranged on one side of the first isolation door body, the first isolation door body and the second isolation door body are the same in structural size, an inclined face is arranged above the first isolation door body and the second isolation door body, and two sets of symmetrically-distributed fresh air grooves are formed in the inclined face. A fresh air groove is formed in the first isolation door, a fresh air fan is fixedly installed in the fresh air groove through fixing bolts, an installation back plate is fixedly installed at the tail end of the fresh air fan and located on the back face of the first isolation door, the installation back plate is designed to be of a hollowed-out frame structure, and a fresh air box is fixedly installed on the installation back plate through fixing screws. The isolation door for the clean laboratory has the advantages that isolation use is met, air can be effectively ventilated and introduced, harmful germs, impurities and dust in the air can be effectively sterilized and filtered, the use effect of the isolation door is greatly improved, the normal cleanliness of the clean laboratory is guaranteed, pollution is avoided, and the isolation door has good practicability.

The present invention relates to the field of catalyst technology, and in particular to a preparation method, product and application of a biochar-based catalyst. The preparation method of the biochar-based catalyst comprises the following steps: step 1, dissolving two precursor substances containing Mn and metal N respectively in water to obtain a homogeneous solution; step 2, adding the homogeneous solution to an alkaline solution containing waste residue L and keeping the pH of the reaction system alkaline, aging, and obtaining a mixed solution; step 3, filtering and washing the mixed solution, and then drying to obtain a hydrotalcite-like composite material containing N, Mn and L; step 4, calcining the hydrotalcite-like composite material containing N, Mn and L to obtain the biochar-based catalyst. The present invention not only realizes the recycling of waste, but also the prepared catalyst can efficiently catalytically reduce nitrogen oxides in flue gas at low temperature, and also has good low-temperature anti-poisoning performance and regeneration performance, which conforms to the concept of "treating waste with waste".

The invention discloses a preparation method and application for synthesizing a C / Bi / Bi2WO6 heterojunction photocatalyst through a rotational crystallization method, Bi nanospheres are deposited on the surface of flower-shaped Bi2WO6 by utilizing an SPR effect, so that the separation efficiency of Bi2WO6 photon-generated carriers is improved, the photocatalytic reaction performance is enhanced, the rotational crystallization method is combined with the SPR effect, and the photocatalytic performance is improved. A novel composite photocatalyst C / Bi / Bi2WO6 is prepared by using a rotational crystallization method for the first time, the catalytic activity is enhanced by changing the morphology, the visible light response range is enhanced by doping nonmetal (such as C, N or S), and the photocatalytic activity is further improved. After the C / Bi / Bi2WO6 heterojunction photocatalyst is subjected to photocatalysis for 60 minutes, the degradation rate of the C / Bi / Bi2WO6 heterojunction photocatalyst on norfloxacin NOR is as high as 93.4%, and the degradation rate on ciprofloxacin CIP is as high as 90.1%.

The invention relates to the technical field of flue gas purification, in particular to a waste incineration power plant flue gas integrated treatment material and a preparation method thereof.The preparation method of the waste incineration power plant flue gas integrated treatment material comprises the following steps that 1, MgO-MnO2 core-shell powder is prepared; step (2), preparing MgO-MnO2-ZnO core shell powder; and (3) adding the alkali modified molecular sieve carrier, the MgO-MnO2-ZnO core-shell powder and a binder into deionized water, stirring until the mixture is dried, calcining, grinding and sieving to obtain the novel material for integrated treatment of the flue gas of the waste incineration power plant. MgO (at) MnO2 (at) ZnO is taken as an active component, an alkali modified molecular sieve is taken as a carrier, the catalyst is characterized in that a microcosmic particle structure of the active component adopts a multi-layer core-shell structure design, cooperative cooperation realizes cooperative treatment of SO2, NOx and HCl, and the catalyst is especially suitable for integrated treatment of flue gas of a waste incineration power plant.

The invention relates to the technical field of catalysts, and discloses a vehicle-mounted formaldehyde removal agent and a preparation method thereof.The vehicle-mounted formaldehyde removal agent is obtained by doping rare earth La into a cobalt salt solution, adjusting the solid-to-liquid ratio of reactants, washing and drying a product after hydro-thermal synthesis is finished, obtaining a rare earth La-doped rare earth element Co3O4 material, then loading mesoporous MnO2, and conducting roasting treatment; the microwave-hydrothermal method can enable the salt solution to be uniformly heated in a short time, and the influence of temperature gradient is greatly eliminated, so that uniform superfine powder is obtained; the vehicle-mounted formaldehyde removal agent shows long-term and efficient performance in the formaldehyde removal process, the activity of the vehicle-mounted formaldehyde removal agent is still kept to be 90% or above even if the vehicle-mounted formaldehyde removal agent reacts for a long time, the activity of the vehicle-mounted formaldehyde removal agent is not obviously reduced after the vehicle-mounted formaldehyde removal agent continuously reacts for 8 h, and the vehicle-mounted formaldehyde removal agent has good activity and stability; the catalyst can replace a traditional noble metal catalyst, and is low in cost, simple in preparation process, free of emission of three wastes, safe and environmentally friendly.

The invention discloses a preparation method for modifying a photo-anode, a counter electrode and an electrolyte by using a lignin derivative and application of an assembled solar cell, and the method comprises the following steps: dissolving alkali lignin in ethanol, ultrasonically stirring, centrifuging, and taking supernate to obtain a lignin / ethanol solution; the preparation method comprises the following steps: dissolving lignin, titanium dioxide, ethyl cellulose and alpha-terpilenol in a lignin / ethanol solution, and ultrasonically stirring to obtain the photo-anode material. Sodium lignin sulfonate is dissolved in the EDOT aqueous solution to serve as an electro-deposition solution, and the counter electrode is prepared through constant-current electro-deposition. The preparation method comprises the following steps: dissolving alkali lignin in acetonitrile, and ultrasonically stirring valeronitrile, 1-methyl-3-propyl imidazolium iodide, guanidine cyanosulfate, iodine and 4-tert-butylpyridine to obtain the AL / I electrolyte. The dye-sensitized solar cell prepared by assembling the photo-anode, the counter electrode and the electrolyte has the advantages of high photoelectric conversion efficiency, low cost and the like, and has a good application prospect.

This invention discloses a double-layer composite ceramic fiber filter tube with functions of flue gas dust removal, nitrous oxide removal, and dioxin removal, and its preparation method. The ceramic fiber tube consists of an outer filter layer and an inner catalyst layer. The ceramic fiber tube provided by this invention has high dust removal efficiency at 150℃~400℃, high nitrous oxide removal efficiency, and high dioxin removal efficiency. The preparation process is simple and has few steps. The active components are uniformly dispersed on the carrier, with adjustable loading and high bonding strength. This material can achieve integrated treatment of dust, nitrous oxide, and dioxins, efficiently simplifying the treatment process of industrial exhaust gas purification and reducing flue gas treatment costs.

The invention belongs to the technical field of environmental catalytic materials, and particularly discloses a Ru-Zr / CePO4 catalyst for inhibiting polychlorinated by-products as well as a preparation method and application of the Ru-Zr / CePO4 catalyst. The catalyst comprises a CePO4 carrier and an active component loaded on the surface of the CePO4 carrier; the active component comprises a Zr species and a Ru species; the catalyst has a multi-phase interface structure, and comprises a Ru0 / CePO4 interface, a RuOx / CePOO interface, a ZrOx / CePO4 interface and a RuOx-ZrOx / CePO4 interface. An acid-base pair of CePO4 and a ZrOx / CePO4 interface promote dichloroethane adsorption dechlorination and rapid removal of HCl; the electron-rich Ru species and the RuOx-ZrOx interface enhance lattice oxygen migration and water activation, and the vinyl chloride intermediate is subjected to rapid low-temperature oxidation hydrolysis. Multi-interface cooperation blocks Cl2 circulation from the source and inhibits polychlorinated by-products. The T90 of the catalyst reaches 260 DEG C at 260 DEG C, the CO2 selectivity is close to a theoretical value, and the catalyst has excellent water resistance, chlorine poisoning resistance and long-term stability and is wide in application prospect.

The present invention discloses a preparation method and application of an ultra-thin nickel-aluminum hydrotalcite sheet material, and belongs to the technical field of heavy metal pollutant removal. In the present invention, by introducing formamide and microwaves in the synthesis process of nickel-aluminum hydrotalcite, the accumulation of sheets is significantly suppressed, the thickness of the sheets is reduced, and the adsorption capacity of hexavalent chromium is enhanced. Nickel, as the main active component, has unique chemical properties, such as excellent redox ability and stable chemical structure, so that NiAl-LDH shows excellent effects in removing heavy metal ions. The NiAl-LDH material prepared by this method can be widely used in the fields of water treatment and soil remediation, especially in the removal of toxic hexavalent chromium. This material is not only suitable for industrial wastewater treatment, but also suitable for the remediation of contaminated soil, providing an effective and reliable solution for environmental protection.

The present application relates to a kind of chlorine dioxide solid sustained-release agent and its preparation method, the preparation method includes: S1, zeolite, activated carbon fiber and water are mixed, stirring and then filtering dry, obtain activated carbon fiber modified zeolite;S2, the above activated carbon fiber modified zeolite is contacted with fluorine gas, and activated carbon fiber-fluorine gas modified zeolite is obtained;S3, the above activated carbon fiber-fluorine gas modified zeolite is soaked in chlorite solution, filter dry, and the chlorine dioxide solid sustained-release agent is obtained, the chlorine dioxide solid sustained-release agent obtained by the method has the advantages of large chlorite loading, chlorine dioxide release rate is fast, sustained-release period is long etc..

The invention discloses a preparation method and application of a NiFe-LDH / CeO2 composite nanomaterial, and belongs to the field of electrochemical sensors. The NiFe-LDH-coated CeO2 nanowire composite nanomaterial is prepared, the NiFe-LDH / CeO2 composite nanomaterial is coated on the surfaces of a glassy carbon electrode and a screen-printed electrode, and electron transfer of a reaction of catalyzing and oxidizing glucose by the electrode can be effectively improved, so that the sensitivity of the electrode material to glucose detection is improved.