11results about How to "Excellent electron transfer ability" patented technology

The invention discloses a preparation method and application for constructing an MOF (Metal Organic Framework) derivative electrode material by using PET (Polyethylene Terephthalate) waste plastics as an organic ligand source. The method comprises the following steps: directly adopting PET waste plastics or a depolymerization product terephthalic acid thereof, combining with a metal salt and an organic solvent, reacting under a hydrothermal condition, and performing centrifugal separation, washing and drying after the reaction to obtain the MOF material. Furthermore, the MOF material is prepared into a corresponding electrode material, and the electrode material is successfully applied to the field of electrocatalytic CO2 reduction. The MOF electrode material prepared by PET derivation shows good catalytic performance in the process of electrocatalytic CO2 reduction by virtue of rich active sites and excellent electron transfer capability of the MOF electrode material. The preparation method is simple in process and low in cost, not only realizes effective recycling of the PET waste plastics, but also contributes to reduction of environmental pollution, and is an innovative technology with both environmental benefits and economic benefits.

The application discloses an electrochemical sensor and a preparation method and application thereof. The electrochemical sensor comprises a three-electrode system composed of a working electrode, a reference electrode and a counter electrode, wherein the working electrode is composed of a base electrode, a molybdenum disulfide nanoparticle modification layer and a polyethylene dioxythiophene layer; the molybdenum disulfide nanoparticles are loaded on the surface of the base electrode through a drop coating method, and the polyethylene dioxythiophene is in-situ loaded on the surface of the molybdenum disulfide nanoparticle modification layer through an electro-polymerization reaction. The electrochemical sensor can be used for detecting lead ions in water bodies, has the advantages of simple preparation, stable performance, suitability for an acidic medium and the like, and is suitable for practical application and popularization.

The invention discloses a preparation method of a high-conductivity multivalent nanowire and application of the high-conductivity multivalent nanowire to a non-enzyme glucose sensor. The copper nanowire with a high length-diameter ratio is prepared, a certain amount of thiourea is directly added into an ethanol solution of the copper nanowire, and conversion from the copper nanowire to the high-conductivity multivalent nanowire can be achieved under the condition of a specific reaction temperature. In the conversion process, the surface of the nanowire is synchronously induced to form a coarse structure, non-single valence copper sulfide active sites are constructed, and the formed synergistic effect can remarkably increase the number of the active sites, reduce an electrocatalytic oxidation reaction energy barrier and strengthen the specific adsorption capacity of glucose molecules, so that the non-enzyme glucose sensor is manufactured. The sensor shows ultrahigh detection sensitivity, ultralow response speed and excellent anti-interference performance, the preparation process is extremely simple, the cost is low, and the sensor has remarkable technical advantages and wide application prospects in the field of quantitative detection of glucose.

The invention provides a composite catalyst and a preparation method and application thereof, the composite catalyst is of a cubic crystal structure, and the composite catalyst comprises an MOFs material and iron atoms and cobalt atoms doped in the MOFs material. The composite catalyst is wide in pH application range, high in catalytic activity and high in cycling stability, and the toxicity of catalytic degradation products can be obviously reduced.

The invention relates to the technical field of catalysts, and discloses a methane and carbon dioxide reforming catalyst, a preparation method thereof and a methane and carbon dioxide reforming reaction method, the preparation method comprises the following steps: (1) in the presence of a first solvent, mixing a soluble compound of Ce, a porous carbon material and a first complexing agent to obtain a first mixture; the specific surface area of the porous carbon material is 50-400m < 2 > / g; (2) carrying out reaction on the first mixture to form gel, and then carrying out first roasting to obtain a CeO2 carrier; and (3) enabling a La-Ni perovskite precursor to be in contact with the CeO2 carrier, and then performing second roasting. According to the method, a porous CeO2 carrier is synthesized by adopting a template method, La-Ni perovskite oxide is generated on the surface of CeO2, the prepared catalyst is applied to methane carbon dioxide reforming reaction, and the catalytic activity and carbon deposition resistance of the catalyst can be remarkably improved.

The present invention belongs to the technical field of semiconductor photocatalysts, and specifically relates to a visible light responsive hydrogen production catalyst prepared from graphene-like enteromorpha biomass and a preparation method thereof. The catalyst includes GO with a mass fraction of 2 to 10%, and also includes dysprosium oxide and carbon nitride with nitrogen-defective graphite phase. The preparation method uses enteromorpha to prepare GO, and then obtains GO / Dy2O3 / ND‑g‑C3N4 catalyst by microwave hydrothermal reaction with prepared Dy2O3 / ND‑g‑C3N4. In the prepared catalyst, ND‑g‑C3N4 and GO act synergistically, so that the visible light responsive hydrogen production catalyst GO / Dy2O3 / ND‑g‑C3N4 has a higher photocatalytic hydrogen production efficiency than pure Dy2O3 itself and Dy2O3 / ND‑g‑C3N4 photocatalyst, especially when the mass fraction of GO is 6%, the hydrogen production rate is the highest.

This invention relates to the field of wastewater treatment technology, specifically a method for treating high-salt organic wastewater containing polyenes and polyamines. This invention overcomes the problems of high toxicity of polyenes and polyamines, easy complexation with catalysts, and low biochemical efficiency under high-salt conditions in wastewater treatment. First, this invention utilizes copper-supported cross-linked chitosan to achieve specific complexation and sedimentation of macromolecules, significantly reducing toxicity. Then, it uses oxygen-rich vacancy titanium dioxide particle electrodes combined with ultrasound to efficiently break stubborn C-N bonds. Next, bimetallic catalytic ozone completely eliminates residual biotoxicity. Finally, iron-modified biochar provides a salt-resistant microenvironment and electron shuttle effect for salt-tolerant bacteria, achieving deep mineralization and denitrification of pollutants. This effectively solves the biochemical treatment problem under the dual stress of high salt and high toxicity, resulting in stable effluent quality.

The application discloses a low-temperature denitration catalyst and a preparation method thereof, and belongs to the technical field of flue gas denitration catalysts. 60 The catalyst is prepared by doping fullerene C 60 The pi electron system of C 60 is highly delocalized on the three-dimensional curved surface thereof, so that C 60 has excellent electron transfer capacity; and the doping proportion of C 60 can effectively promote the rapid progress of the catalytic reaction. Therefore, the catalyst prepared by the application can be applied to low-temperature flue gas denitration, can significantly improve the denitration efficiency, can widen the active temperature range of the catalyst, and can solve the problems of poor low-temperature activity, insufficient sulfur resistance and easy poisoning of traditional catalysts.

The invention provides a bimetallic oxide modified biochar material as well as a preparation method and application thereof, and belongs to the technical field of water pollution treatment. According to the invention, the biochar is used as a matrix, the active component is loaded by utilizing the rich pore structure of the biochar, pollutants can be adsorbed, and the catalytic activation performance can be improved by virtue of the excellent electron transfer capability; by doping nitrogen in the biochar, the electronic structure and the adsorption performance of the biochar can be optimized, so that the catalytic activity is improved; the regular structure of the biochar can be destroyed by coating ferroferric oxide, a rich surface structure is constructed, active sites are further exposed, and contact with pollutants is increased; through loading cuprous oxide, copper ions and iron ions interact with each other, so that electron transfer on the surface of the catalyst is improved, generation of free radicals is promoted, and the degradation efficiency of pollutants is improved; the nanowire-shaped cuprous oxide can increase the specific surface area of the material and further promote contact with pollutants.

The application relates to a five-nuclear copper cluster modified silicotungstic acid crystal material with a three-dimensional entangled structure. The application aims to solve the problems of low efficiency, insufficient stability, high cost and the like of conventional catalysts. The patent takes SiO2.12WO3.26H2O and CuCl2 as raw materials, takes 5-(2-pyridyl)-1H-tetrazole (ptzH) as a ligand, adjusts a pH value, and reacts for 72 hours under the condition that the temperature is 160 DEG C to synthesize a transition metal modified silicotungstic acid crystal material with a three-dimensional entangled structure, which is used for photocatalytic decomposition of water to produce hydrogen. The material has a highest photocatalytic decomposition of water to produce hydrogen activity of 7.8 mmol g ‑1 h ‑1 under the condition that triethanolamine is used as a sacrificial agent, and has more excellent catalytic efficiency and electron transfer capacity.

The present specification discloses a compound of Chemical Formula 1 and an organic light emitting device comprising the same. Also disclosed is an organic light-emitting device comprising a first electrode, a second electrode provided so as to face the first electrode, and one or more organic material layers provided between the first electrode and the second electrode, the one or more organic material layers containing the compound, at this time, the organic layer contains a compound represented by Chemical Formula 1, and in this case, the luminous efficiency, stability, lifespan, and the like of the device can be improved.