36results about How to "Meet the requirements of environmental friendliness" patented technology

The invention discloses a brown colorant for water Teflon high-temperature cloth and a method for preparing the brown colorant. The brown colorant is composed of a high-temperature resisting pigment, polytetrafluoroethylene, a functional additive agent, a dispersing wetting agent and deionized water. The materials comprise, by weight percent, 35 to 50 percent of the high-temperature resisting pigment, 10 to 20 percent of the polytetrafluoroethylene, 5 to 10 percent of the functional additive agent, 2 to 20 percent of the dispersing wetting agent, and the balance of deionized water. The brown colorant can be prepared through mixing and grinding all the constituents and implementing quality test, vacuum defoamation and filtering packing. The brown colorant for the water Teflon (PTFE) high-temperature cloth by the method is characterized by long storage stability, good temperature resistance (reaching to more than 400 DEG C), excellent chemical resistance, bright color, good compatibility with PTFE emulsion and high color intensity. The grain diameters can realize that D99 is less than or equal to 5 microns (namely, the average diameter of 99 percent of the grains is less than or equal to 5 microns), and the brown colorant and the method conform to national environmental requirements because the deionized water is taken as base material. The brown colorant has the advantages of simple preparation process, low preparation cost and easy industrialized production.

The invention discloses a visible and near-infrared photoresponse CQDs‑ZnIn 2 S 4 ‑The preparation method of BiOCl ternary heterojunction belongs to the technical field of semiconductor material preparation, comprising the following steps: 1) preparing ZnIn 2 S 4 Photocatalyst; 2) Preparation of CQDs photocatalyst; 3) Preparation of ZnIn 2 S 4 ‑BiOCl photocatalyst; 4) Preparation of CQDs‑ZnIn 2 S 4 ‑BiOCl photocatalyst. A visible and near-infrared photoresponsive CQDs‑ZnIn of the present invention 2 S 4 ‑BiOCl ternary heterojunction preparation method, using simple and fast method to prepare CQDs‑ZnIn 2 S 4 ‑BiOCl heterojunction exhibits excellent photocatalytic activity in the degradation of various antibiotics under visible and near-infrared light. The process of the invention is very simple, cheap and easy to obtain, low in cost and short in reaction time, thereby reducing energy consumption and reaction cost, convenient for mass production, non-toxic and harmless, and meeting the requirements of environmental friendliness.

The invention relates to a BCZT-based energy storage ceramic material and a preparation method thereof, belonging to the field of functional ceramics. The formula of this material is (Ba 0.85 Ca 0.15 Zr 0.1 Ti 0.9 o 3 ) 1‑x (BiMg 0.6667 Nb 0.3333 o 3 ) x , referred to as (1‑x)BCZT‑xBMN, where x=0‑0.1, x is the number of moles. The preparation process includes calcium carbonate, barium carbonate, zirconium dioxide, bismuth oxide, magnesium oxide, niobium pentoxide and titanium dioxide as raw materials, according to the chemical formula, through weighing, primary ball milling, pre-calcination, secondary ball milling, granulation, pressing The BCZT-based energy storage ceramic material is prepared by processes such as sheeting, debinding, and sintering. This material not only has high energy storage density, but also has the characteristics of high breakdown strength, good temperature and frequency stability, and the like.

The invention belongs to the field of photoelectrochemical technology, and specifically refers to a preparation method and application of a heterojunction photoelectrode. First, a double-layer TiO2 nanorod array is synthesized on an FTO substrate, and then a uniform spin-coating method is used to spin-coat it on the FTO substrate. Layer redox graphene, and finally use chemical deposition and photodeposition methods to load CdS@Au core-shell structure nanoparticles on the surface of redox graphite / TiO2. The Au@CdS / RGO / TiO2 heterojunction photoelectrode prepared by simple hydrothermal synthesis method, spin coating method, chemical deposition method and photodeposition method has good chemical stability and good photoelectrochemical performance. ; The process of the present invention is simple, the repeatability is good, and the materials used are cheap and easy to obtain, which meets the requirements of environmental friendliness.

The invention belongs to the technical field of synthesis of nanocomposite materials, and relates to the preparation of composite electrodes, in particular to a Cu-MOF / BiVO 4 Preparation method and application of composite photoelectrode. In the present invention, BiVO₄ with a worm-like structure is firstly prepared on the FTO substrate by electrochemical deposition and calcination, and then a layer of Cu₂O is controllably loaded on the surface of BiVO₄ by electrochemical deposition, and finally Cu₂O and organic Ligand reaction, in situ introduction of ultrathin Cu‑MOF films on the surface of BiVO₄. It can also be used as a working electrode in the photoelectrochemical water splitting reaction. The present invention uses a simple and feasible method in the BiVO of worm-like structure 4 The ultra-thin Cu-MOF loaded on the surface can effectively improve the separation efficiency of electrons and holes of the photoelectrode, and enhance its ability to capture visible light, and finally realize the construction of a new type of composite photoelectrode that can efficiently convert solar-chemical energy , has excellent photoelectrochemical properties and good chemical stability; the invention has simple process, good repeatability, and meets the requirement of environmental friendliness.

The invention belongs to the technical field of synthesis of a photocatalyst, and especially relates to a Fe2O3 / g-C3N4 composite system and a preparation method and an application thereof, which can be used for catalytic degradation of tetracycline hydrochloride pollutants by visible light. The method comprises the following steps: accurately weighing P123 and hexamethylene imine, dissolving the materials in a mixed solution of absolute ethyl alcohol and ethylene glycol, and stirring the materials to obtain a solution A; accurately weighing tetrahydrate ferrous chloride, and adding tetrahydrate ferrous chloride in the solution A and performing ultrasonic dissolving to form a solution B; adding mesoporous g-C3N4 in the solution B to form a fluid suspension C; performing ultrasonic dissolving and magnetic stirring on the fluid suspension C to obtain turbid liquid D; transferring the turbid liquid D to a reaction vessel, and reacting the materials in a baking oven at the temperature of 200 DEG C for 15 h; naturally cooling the materials to room temperature, and performing centrifugation, washing, and drying to obtain a solid F; and placing the solid F in a crucible, and placing the materials in a muffle furnace for calcining to obtain a sample.

The invention belongs to the technical field of photocatalytic hydrogen production, and relates to a preparation method of functional carbon quantum dots modified Ag-In-Zn-S quantum dots. The iron formic acid solution was mixed and made up to 20 mL with distilled water, and the CDs-FcA precursor was obtained by hydrothermal reaction at 110-140 °C for 2-4 h; silver nitrate, indium nitrate, zinc acetate, and L-cysteine ​​were mixed into an aqueous solution, Adjust the pH of the solution to 8.5 with 1M NaOH, add CDs-FcA precursor and thioacetamide, stir evenly with ultrasonic, hydrothermally react at 110°C for 2-4 hours, and wash by centrifugation after the reaction. The invention utilizes the higher visible light response capability of the Ag-In-Zn-S quantum dots, and can quickly extract the photo-generated holes in the quantum dots through the two-order lower HOMO energy level orbits, which greatly reduces the photo-generated charges. Recombination efficiency to achieve more efficient photo-splitting of water for hydrogen production. The invention has the advantages of simple process, low price and easy availability, convenient mass production, non-toxic and harmless, and meets the requirements of environmental friendliness.

The invention belongs to the technical field of nanometer material synthesis, and a carbon-quantum-dot-modified indium-sulfide (beta-In2S3) mesoporous hollow microsphere photocatalyst is synthesized in one step by utilizing a simple rapid hydrothermal method. The method comprises: dissolving indium chloride and L-cysteine in distilled water, and stirring to obtain a solution D; adding carbon quantum dot into the solution D, and stirring to obtain a solution E; transferring the solution E to a reaction kettle with a teflon inner liner, putting in a baking oven, and reacting at 150 DEG C for 24 h; and naturally cooling to room temperature, centrifuging to obtain a dark-red solid, washing and drying in vacuum, so as to obtain a sample. The indium-sulfide mesoporous hollow microsphere photocatalyst is applicable to degrade methyl orange dye under visible light.

The invention belongs to the technical field of nano material synthesis. A niobium pentoxide and graphite-like phase carbonized nitrogen heterojunction photocatalyst is synthesized by a simple and quick thermal polymerization method by one step, and can be used for degrading a methylene blue stain under visible light. A preparation method comprises the following steps: uniformly grinding and mixing niobium pentoxide and melamine, and obtaining a sample B; transferring the sample B into a circular crucible, covering the crucible with a crucible cover, horizontally placing the crucible into a muffle furnace, heating the muffle furnace to 550 DEG C, reacting under the temperature for 4 hours, naturally cooling to room temperature, and obtaining a sample B1; uniformly grinding the sample B1, and finally obtaining an Nb2O5 / g-C3N4 heterojunction sample.

The invention discloses a preparation method of high-gloss environment-friendly organic pigment slurry for natural latex balloons. The high-gloss environment-friendly organic pigment slurry comprises organic pigment, wetting dispersant, brightener, humectant, anti-mildew bactericide, pH regulator and deionized water. The preparation method includes: pre-dispersing and grinding the components, and then performing quality inspection, vacuum defoaming and filtration to obtain the required environment-friendly organic pigment slurry. The high-gloss environment-friendly organic pigment slurry prepared by the method has the advantages that the slurry is high in glossiness and good in environment protection performance, the deionized water is used as the solvent, and the slurry conforms to the environment-friendly requirement of China.