31results about How to "Rich in hydroxyl" patented technology

The present invention provides a manganese dioxide/carbon nano tube composite adsorbing agent. Said adsorbing agent includes manganese dioxide and carbon nano tube, the manganese dioxide can be adsorbed on the carbon nano tube, the manganese dioxide content is 10%-40% of total mass. Besides, said invention also provides its preparation method and its concrete steps.

The invention discloses a sequent organic-inorganic hybridized dielectric silica and loaded nanometer gold material and making method, which is characterized by the following: blending n-ethyl orthosilicate and one organic functional siloxane primer with imidazole ionic liquid of thioether; synthesizing hybridized organic-inorganic dielectric silica material with imidazole ionic liquid of thioether under certain temperature; utilizing rich hydroxy on the channel surface to reduce HAuCl4 directly.

The invention discloses a safe and simple method for preparing double-doped nitrogen and phosphor carbon quantum dots. In the method, firstly, amino acid and a carbon pre-cursor are dissolved in deionized water, a phosphoric acid solution is added, and a settled solution is prepared through stirring; then, the mixed solution is placed into an ultrasonic machine to be treated, wherein ultrasonic time is 1-2 h; the solution after ultrasonic treatment is heated for 1-5 hours in an oil bath at the temperature of 90-150 DEG C, and a nitrogen and phosphor co-doped carbon dot solution is prepared andcooled until room temperature is reached; large-particle impurities in the solution are removed through centrifuging, then dialysis is performed in a dialysis bag, and non-reaction raw materials andother small-particle impurities are removed. The raw materials are safe and free of toxin, conditions are mild, and the process is simple; by changing the type of amino acid and adjusting the ratio ofthe raw materials, the carbon quantum dots capable of emitting blue, green, yellow or orange red light can be obtained, and can be applied to the fields of bioimaging, ion detecting and others.

Belonging to the field of heavy metal polluted water treatment, the invention discloses a preparation method and application of an Fe-Ti binary oxide adsorbent for removal of antimony. The adsorbent adopts an iron salt and a titanium salt as the raw materials, pH regulation, co-precipitation, ultrasonic dispersion, ageing, centrifugation, washing, drying, grinding, and sieving are carried out to obtain the Fe-Ti binary oxide adsorbent. The adsorbent combines the advantages of iron oxide and titanium oxide, has a lot of rough micro-adsorption channels and a large specific surface area, containsrich hydroxyl on the surface, has fast adsorption speed and high adsorption capacity, and can achieve collaborative adsorption of antimony in wastewater selectively. The adsorbent prepared by the method provided by the invention can be applied to deep purification and safety control of antimony in wastewater.

The invention discloses a microbe-assembly-synthesis-based arsenic polluted soil restoring and fixing agent, and preparation and application methods thereof. Many iron-base materials for arsenic polluted soil restoration at present influence the structural properties of the soil due to the introduction of abundant exogenous iron, and the iron salt fixing agent can easily acidify the soil after being applied, thereby restricting the development of the soil restoring and fixing agent in the aspect of soil restoration. In order to solve the problems above, nano alpha-Fe2O3 is used as a central substance and coated by mycelial fungus hypha to prepare the restoring and fixing agent for arsenic polluted soil. When the synthesized product is proportionally and uniformly mixed with soil, after seven days, the fixing rates for water-soluble arsenic and effective-state arsenic in the arsenic polluted soil respectively reach 83.2% and 96.4%. The fixing agent has the advantages of simple preparation process, high efficiency, no toxicity or harm and no secondary pollution, is biodegradable, can not destroy the physicochemical properties of the soil, and thus, is an environment-friendly fixing agent.

The invention relates to the technical field of building materials, and discloses a machine-made sand regulator for concrete, which comprises polycarboxylic acid mother liquor, diethanolisopropanolamine, triisopropanolamine, glycerol and sodium sulfate. Water is used as a solvent. The machine-made sand regulator disclosed by the embodiment of the invention has rich hydroxyl, is weakly alkaline, does not contain chloride ions, is non-toxic and non-corrosive, and is a high-performance green and environment-friendly material. The components are simple, and the excellent performance is achieved byregulating and controlling the reasonable ratio of the components. By using the machine-made sand regulator as an admixture of concrete, all sand in the concrete can adopt machine-made sand. No wasteliquid is generated, no cleaning is needed after stirring, no production wastewater is generated, and no waste gas is generated. The invention further discloses concrete and a preparation method thereof.

The invention discloses an iron-based biochar material as well as preparation and application thereof. In the invention, by adopting nano alpha-Fe2O3 as a center substance and wrapping the nano alpha-Fe2O3 with aspergillus niger hyphe, the iron-based biochar material for arsenic-polluted soil remediation is prepared through anoxic high-temperature carbonization. The synthesized iron-based biochar material is uniformly mixed with soil according to certain proportion; and after a period of time, the fixed rate of the water-soluble state arsenic and effective-state arsenic in the arsenic-polluted soil reaches 59.6% and 66.2% respectively. The iron-based biochar material disclosed by the invention has the advantages of easiness in preparation, high efficiency without toxicity, biodegradability and no secondary pollution or damage of physicochemical properties of soil and is an environment-friendly fixing agent.

The invention provides a process for treating heavy metal wastewater, which can realize heavy metal wastewater treatment in a relatively short time by preparing a magnetic treatment preparation. By adopting the process, after solid and liquid are separated, effluent can achieve the national drainage standard and can be directly drained, sludge is electrolyzed to realize heavy metal reclamation, the used treatment preparation can be separated by utilizing a magnetic separation method, and the treatment preparation can be recycled after regeneration (the heavy metal wastewater treatment effect is not remarkably reduced when the treatment preparation is used repeatedly for more than 1000 times). The process is applicable to heavy metal wastewater treatment, has short time consumption, enableseffluent to accord with the national drainage standard, can realize heavy metal reclamation, and accords with the concept of environmental friendliness.

The invention discloses a method for preparation of surface active onion-like carbon nanospheres based on vapor deposition. The method includes: taking liquid small organic molecule alkane n-dodecane as the carbon source, carrying out chemical vapor deposition reaction at a high temperature of 650-700DEG C in an inert carrier gas environment with the existence of a ferrocene catalyst to directly prepare the high surface activity onion-like carbon nanospheres composed of onion-like graphitized shell coated ferroferric oxide nanoparticles. The onion-like carbon nanosphere product prepared by the method provided by the invention has good surface activity, thermal stability and wide practicability, and can be applied to adsorption materials, energy storage materials, catalytic materials, medical materials, and other fields.

The invention discloses a manganese dioxide nanoflower and silicon oxide nanofiber compounding type catalyst and a preparation method thereof. The manganese dioxide nanoflower and silicon oxide nanofiber compounding type catalyst contains 30wt% to 60wt% of manganese dioxide nanoflower. The preparation method comprises the following steps of using the silicon oxide nanofiber as a carrier, using potassium permanganate as a manganese source, using persulfate as an oxidant, performing low-temperature hydrothermal reaction to produce the manganese oxide nanoflower, and loading the manganese oxide nanoflower onto the surface of the silicon oxide nanofiber, so as to obtain the manganese dioxide nanoflower and silicon oxide nanofiber compounding type catalyst. The manganese dioxide nanoflower and silicon oxide nanofiber compounding type catalyst has the advantages that the dispersivity in water is good, the fixing and forming are easy, the adsorbing ability is strong, the catalyzing activity is high, and the like; the process of the preparation technology is short, the operation is simple, the production efficiency is high, the energy consumption is low, the requirement on equipment is low, and the industrialized production is easily realized.

The invention discloses an alcohol wastewater treatment technology. The alcohol wastewater treatment technology comprises the following operation steps: (1) after removing relatively large impuritiesfrom alcohol wastewater through a grille, conveying the alcohol wastewater into an adjusting tank; (2) then lifting the alcohol wastewater through a pump into a primary sedimentation tank and carryingout pre-treatment; adding an alcohol wastewater treatment agent; (3) then conveying the wastewater into a hydrolytic acidification tank and a contact oxidization tank and carrying out biochemical treatment; conveying output water into a secondary sedimentation tank and carrying out mud-water separation, wherein the alcohol wastewater treatment agent is prepared from: Powdered carbon, ferric sulfate, ammonium chloride, aluminum chloride, hydrogen peroxide, a zeolite molecular sieve, iron powder, formic acid, polyacrylamide, sucrose acetate, tartaric acid and sodium caseinate. According to thealcohol wastewater treatment technology disclosed by the invention, the tartaric acid, the sodium caseinate and the sucrose acetate are used as a reinforcing system, so that a flocculation capabilityof the alcohol wastewater treatment technology is improved and the removing rate of dissolved matters of organic matters is improved.

The invention discloses a preparation method and application of an Fe-Cu binary oxide adsorbent for removing antimony. The adsorbent uses ferric salt and cupric salt as raw materials; a solution containing Fe ions and a solution containing Cu ions are mixed; then, full stirring is performed; a NaOH solution is used for regulating the pH; through coprecipitation, ultrasonic dispersion, aging, centrifugation, washing, drying, grinding and sieving, the Fe-Cu binary oxide adsorbent is obtained. The preparation process of the adsorbent is simple; high temperature and high pressure are not needed; the energy consumption is low; the conditions are easily controlled; the risk is low; the raw material cost is low. The adsorbent combines the advantages of ferric oxides and copper oxides; the adsorbent has many coarse micro adsorption pore passages and large specific surface areas; the surface has rich hydroxy; the cooperative adsorption capability on antimony is improved. The adsorbent can be applied to deep purification and safe control of antimony in wastewater.

The invention discloses a heat-conduction-enhanced phase-change nanocapsule composite material as well as a preparation method and application thereof. The heat conduction enhanced phase change nanocapsule composite material is prepared from the following raw materials in percentage by mass: 10.53 percent to 26.09 percent of inorganic shell phase change nanocapsules, 26.09 percent to 31.58 percent of high heat conduction filler, 43.47 percent to 52.63 percent of polydimethylsiloxane prepolymer and 4.35 percent to 5.26 percent of a curing agent. Dispersibility of the phase-change nanocapsule and the high-thermal-conductivity filler in a matrix is enhanced jointly through solvent assisted dispersion and intermittent feeding, so that the material has higher thermal conductivity and thermal storage capacity. The inorganic shell phase change nanocapsule enables the hardness of the polydimethylsiloxane-based composite material to be reduced, so that the composite material is more favorable for being attached to an interface. The material is used as a thermal interface material and is expected to fill air gaps, relieve thermal shock of a chip under high heat flux density and help the chip, an electronic device and the like to dissipate heat better.

The invention provides a preparation method of a silicon dioxide modified porous polyvinyl alcohol non-woven fabric. The method comprises the following steps: adding polyvinyl alcohol powder into deionized water, and carrying out heating to dissolve to obtain a polyvinyl alcohol solution; adding a precursor of silicon into deionized water, uniformly mixing, adding a polyethylene glycol solution, continuously and uniformly stirring the solution, dropwise adding hydrochloric acid to adjust the pH value of the system to be acidic, and stirring the solution for reaction while dropwise adding polyethylene glycol to obtain a silicon dioxide modified polyvinyl alcohol solution; adding aminated silicon dioxide sol into the silicon dioxide modified polyvinyl alcohol solution to form a spinning solution, and performing electrostatic spinning to prepare a silicon dioxide modified polyvinyl alcohol fiber membrane; putting the silicon dioxide modified porous polyvinyl alcohol fiber membrane betweentwo pieces of base cloth, and needling to obtain a silicon dioxide modified polyvinyl alcohol non-woven fabric; and treating the silicon dioxide modified polyvinyl alcohol non-woven fabric with ethanol, and soaking the treated polyvinyl alcohol non-woven fabric into a potassium hydroxide solution and carrying out heating to obtain the silicon dioxide modified porous polyvinyl alcohol non-woven fabric.

The invention provides a preparation method of cellulose nanofiber. The preparation method comprises the following steps of 1) dispersing cellulose in a first organic solvent to prepare a cellulose dispersion liquid; 2) adding lithium hydroxide into the cellulose dispersion liquid obtained in the step (1) to fully swell the cellulose; 3) reacting the fully swollen cellulose obtained in the step (2) with anhydride, and washing reaction liquid to obtain a cellulose reaction product; and 4) dispersing the cellulose reaction product obtained in the step 3) in an alkaline aqueous solution, performing centrifuging, and dialyzing a supernate to obtain a suspension containing the cellulose nanofiber. According to the preparation method, the raw materials are wide and easy to obtain, only simple and mild magnetic stirring is needed, the whole process can be carried out at room temperature, the reaction condition is mild, and the cost is low. The length-diameter ratio of the prepared cellulose nanofiber is greater than 800, and the cellulose nanofiber has higher modifiability and excellent mechanical properties.

The invention provides a gold-based catalyst and a preparation method thereof, and the application of the gold-based catalyst in MDA preparation reactions. The gold-based catalyst is characterized inthat the gold-based catalyst comprises a carrier, and an active component and an auxiliary agent which are loaded on the carrier, wherein the carrier is hydroxide of aluminum; the active component isgold, and the content of the active component is 0.1-10 wt.%; and the auxiliary agent is iron, or iron and iron oxide. With the gold-based catalyst, in the process of preparing methylacrolein dimethylacetal from methanol, methylacrolein and oxygen as raw materials, the conversion rate of methylacrolein can reach 80% or above, and MDA selectivity is up to 90% or above; and compared with the priorart, the yield of MDA is greatly increased, and large-scale industrial preparation of MDA is realized.

The invention provides a macroporous phenolic resin and a preparation method thereof, an application thereof in adsorption of 5-hydroxymethyl furfural. The macroporous phenolic resin has the BET specific surface area of 400-1300 m <2>/g, the pore volume of 0.3-1.5 cm <3>/g, and the average pore diameter of 1-20 nm. The macroporous phenolic resin has the advantages of high specific surface area, high adsorption capacity and high adsorption selectivity; the rich pore structure is regenerated and recycled easily; the macroporous phenolic resin has rich hydroxyl functional groups, and the adsorption capacity of 5-hydroxymethyl furfural is greatly improved through hydrogen bonding and hydrophobic interaction, wherein the maximum adsorption capacity can reach 111 mg/g wet resin, and the elutionyield of the 5-hydroxymethyl furfural is more than 99.5 percent; high efficiency separation of the 5-hydroxymethyl furfural can be achieved. The macroporous phenolic resin is applied to adsorption separation of the 5-hydroxymethyl furfural, does not generate waste water, and can greatly shorten the primary concentration time of the 5-hydroxymethyl furfural, thereby achieving green separation.