55 results about "Iodine doped" patented technology

A method for removing mercury, and in particular elemental mercury, from a fluid stream by blending the fluid stream with a second stream comprising iodine. The blended stream is then passed through at least one filter, which is capable of removing oxidized forms of mercury from gas streams.

Iodine doped bismuthyl carbonate nanosheet and molybdenum disulfide modified carbon nanofiber composites, preparation method and its application in wastewater treatment are disclosed. Bismuth citrate and sodium carbonate as precursors, sodium carbonate as a precipitating agent, dispersed in a mixed solution of water and ethylene glycol, sodium iodide as a iodine source, nano carbon fiber membrane act as the carrier, to synthesis carbon fiber membrane that modified by iodine-doped Bi₂O₂CO₃ nanosheets; then sodium molybdate and thioacetamide as precursors, dispersed in water to react to obtain iodine doped bismuthyl carbonate nanosheet and molybdenum disulfide modified carbon nanofiber composites. The composite material synthesized through a series of steps exhibit excellent photocatalytic activity for the degradation of Rhodamine B and can be recycled for many times. And this invention has the advantages of simple preparation process, easy recovery and multiple use, etc., and has industrial application prospect in water pollution treatment.

The invention provides a photocatalyst Co3O4-CNI and a preparation method and application thereof. According to the photocatalyst Co3O4-CNI, nitrogen-containing organic matter and ammonium iodide serve as raw materials, iodine-doped graphite-phase carbon nitride (abbreviated as CNI) can be prepared through a hydrothermal method, then prepared CNI and a cobalt-containing compound react through a hydrothermal method, and optionally, cooling and smashing are performed so that the photocatalyst Co3O4-CNI can be prepared. The prepared photocatalyst has a good catalytic degradation effect on organic dye and particularly azo type organic dye under visible light.

The invention relates to a fluorescent-CT bimodal imaging probe and a preparation method thereof, specifically relates to a fluorescent-CT bimodal iodine doped carbon quantum dot prepared by a one-step hydrothermal carbonization method and application of the fluorescent-CT bimodal iodine doped carbon quantum dot in biomedical images, and belongs to the field of biomedical materials. The specific scheme is as follows: dissolving iodixanol and glycine in an aqueous solution according to a certain mass ratio to serve as precursors, putting the solution in a hydrothermal reaction kettle with polytetrafluoroethylene lining, heating up to 120-200 DEG C to react for 4 hours, dialyzing and freeze drying nigger-brown reaction liquid to remove residues and water to obtain black powdery nanoparticles, namely iodine doped carbon quantum dots. The iodine doped carbon quantum dot prepared by the method has such excellent properties as stable fluorescence, efficient X-ray attenuation capacity and good biocompatibility, and is successfully applied to live cell fluorescent imaging in vitro and CT imaging in vivo. The method has the advantages of simple operation, environmental protection and easy mass production.

The invention discloses a method for preparing a photothermal conversion material on the basis of iodine doping. The equipment provided by the invention is based on doping preparation of black materials so as to realize the scaled processing of photothermal conversion materials and to further realize the three-dimensional stereoscopic modeling processing precise customized physical therapy, wherein used materials comprise industrial rubber (trans-polyisoprene), elemental iodine and various high molecular materials capable of realizing blending. Compared with a conventional photothermal conversion material, the photothermal conversion material obtained by the method of the invention has the advantages that simplicity is realized; the acquisition is easy; the large-scale production and processing can be realized; the modeling forming and processing can be realized; the operation is convenient; through the fine structure printing, the firm foundation is laid for the subsequent wide application; wide application prospects can be realized in the high-end customized personnel nursing market. Through the characteristic of easy blending with various materials, the application in aspects ofphotothermal conversion, further pyroelectricity and the like can be realized with the help of other thermal response materials; a novel idea is provided for solving the environment problems of hazeremoval and the like.

The invention discloses a preparation method of an iodine-doped nano-Bi4O5Br2 visible-light-induced photocatalyst. The preparation method includes the following steps that 1, bismuth salt is dissolved in polyhydric alcohols, wherein the molar concentration of Bi<3+> in a solution A is 0.02-0.1 mol/L; 2, bromine salt is added into the solution A, wherein the molar ratio of Bi<3+> in a solution B to Br- is 2 to 1; 3, iodized salt is added into the solution B, wherein the molar ratio of I in a solution C to Br- is 0.2-2 to 1; 4, the solution C is put into a microwave reactor for microwave reaction for 2-10 minutes, wherein the power of the microwave reactor is 200-800 W; 5, a reaction product is subjected to cooling and drying treatment, the iodine-doped nano visible-light-induced photocatalyst is obtained. The Bi4O5Br2 is subjected to iodine-doped modification to prepare the novel visible-light-induced photocatalyst having stronger visible-light response capability so that sunlight can be better utilized in actual industrial life to efficiently degrade organic pollutants in the environment.

The invention provides a polythiophene nanometer conductive composite material and a preparation method of the polythiophene nanometer conductive composite material based on the advantages of attapulgite of special crystal structure, physico-chemical property and low price, solving the shortcoming in the prior art that the polythiophene-inorganic nanometer composite material is high in cost. The polythiophene nanometer conductive composite material is an iodine-doped porous rod shaped silica/polythiophene amorphous conductive composite material. The preparation method of the polythiophene nanometer conductive composite material comprises the following steps in sequence: dissolving a thiophene monomer into an organic solvent I; adding purified nano attapulgite and an oxidant to an organic solvent II; dropping the mixture to the thiophene solution in an one-by-one way so as to prepare the thiophene/polythiophene nano composite material; and placing the prepared thiophene/polythiophene nano composite material into the iodine vapor to prepare into the porous rod shaped silica/polythiophene amorphous conductive composite material.

The invention discloses an iodine-doped carbon material serving as a cathode of a dye-sensitized solar cell. The material is iodine-doped graphite structure carbon, iodine-doped non-graphite structure carbon or an iodine-doped carbon material which is formed by sintering marine biomass respectively, wherein iodine accounts for 1 to 10 weight percent of the material, carbon accounts for 70 to 90 weight percent of the material, and hydrogen accounts for 0 to 5 weight percent of the material. The invention also discloses a preparation method and application of the material. The iodine-doped carbon material serving as the cathode of the solar cell has excellent performance, the solar conversion efficiency is equivalent to that of a platinum electrode, and the iodine-doped carbon material has the advantages of low cost, simple preparation method and the like.

The invention discloses a preparation method of an iodine-doped titanium dioxide-graphene composite photocatalyst. According to the method, TiCl4 is mixed with a GO aqueous solution; TiO2/G is prepared by hydrothermal reduction; then heat treatment with 55% HI is performed to doping iodine into TiO2/G; and thus the composite photocatalyst I/TiO2/G with high catalytic activity at visible light is prepared. According to the method of the invention, an impurity element of iodine is introduced; new charges are introduced into crystal lattices to form a new doping energy level; thus photons with low energy can be excited to the doping energy level to capture photoproduced electrons or cavities; the separation of the electrons and the cavities is promoted; and finally the photocatalytic activity is improved. The material obtained in the invention not only greatly improves the photocatalytic activity of TiO2/G at visible light, expands the spectral response range of TiO2/G in the visible light region, but also further improves the photocatalytic activity of TiO2/G at ultraviolet light.

The invention relates to a hydrothermal preparation method for an iodine-doped TiO2 nano-catalyst and an application thereof in heterogeneous catalysis of trans-carotene configuration inversion. The preparation method is characterized in that the high-activity iodine-doped TiO2 nano-catalyst is rapidly prepared by adopting a hydrothermal pre-crystallization and vacuum roasting combined process, namely, firstly TiO2 nanoparticles are prepared by using a hydrothermal method, and then the iodine-doped TiO2 nano-catalyst is prepared by adopting a vacuum drying-vacuum roasting process. According to the catalyst prepared by the method, compared with the iodine-doped TiO2 nano-catalyst prepared by the conventional sol-gel method, the crystallization degree is obviously improved, the thermal stability is greatly improved, the period of the preparation process is greatly shortened, and the use amount of the organic solvent is greatly reduced. The catalyst has high activity in catalyzing inversion from all-trans-carotene into cis-isomers thereof, and has the advantages of short inversion time, high inversion efficiency, stable catalytic activity, repeated utilization and the like.

The invention discloses a preparation method of iodine-doped graphene. The preparation method comprises the following steps of S1, dissolving an iodine source into deionized water to prepare a solution I with certain concentration; S2, preparing a graphene oxide turbid liquid with certain concentration, adding the turbid liquid into the solution I, and mixing uniformly to form a mixed liquid II; S3, performing ultrasonic wave processing on the mixed liquid II for 3-6min; S4, transferring to a high-pressure reaction kettle to perform a hydrothermal reaction at a temperature of 150-200 DEG C for 10-14h, reducing the graphene oxide into graphene while doping iodine into the graphene, and regulating and controlling the interlayer spacing of the graphene; and S5, washing the obtained product by deionized water for many times for removing redundant salt, and freezing and drying to obtain the iodine-doped graphene. By adoption of the preparation method of the iodine-doped graphene provided by the invention, regulation and control on the interlayer spacing of the reduction-oxidation graphene is realized through iodine doping, and an iodine-doped graphene material with proper interlayer spacing and conductivity is obtained. The invention also discloses an application of the iodine-doped graphene in a lithium battery.

The invention provides a composite photocatalyst CN-CNI as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, mixing nitrogen-containing organic matters with iodine-containing compounds, preparing the mixture into iodine-doped graphite phase carbon nitride, then mixing the iodine-doped graphite phase carbon nitride with the nitrogen-containing organic matter again, and finally preparing the mixture into the composite photocatalyst CN-CNI through a hydrothermal method. The preparation method is mild in process conditions, simple in operation and easy to realize, and the prepared composite photocatalyst is capable of carrying out catalytic degradation on dye-containing sewage under the condition that visible light exists and is high in catalytic degradation efficiency.

The invention discloses a high-polymer electrothermal film which is prepared from the following raw materials in parts by weight: 100 parts of iodine-doped polyacetylene, 15-20 parts of glass fiber, 0.5-2 parts of carbon fiber, 0.2-0.5 part of plasticizer and 0.2-0.5 part of foaming agent. The electric conductivity of the high-polymer electrothermal film disclosed by the invention is basically free from the influence of temperature; and the high-polymer electrothermal film still has favorable electric conductivity, has the advantages of low aging tendency and long service life, and is suitable for industrial production in various fields.

The invention relates to the field of photoelectronic techniques, in particular to a photoconductive organic semiconductor detector. The invention discloses a near-infrared visible-light OPV iodine-doped photovoltaic organic detector, which comprises a substrate, wherein functional layers are arranged on the substrate. The organic detector comprises the substrate (1), a metal or transparent conductive pole (3), a hole transmission layer (4), an organic photosensitive layer (2) and the like, and is characterized in that the organic photosensitive layer (2) is made of an OPV material, after acceptor-doping of iodine and has photoelectric response to near-infrared light, of a solar cell. The organic photosensitive layer is a common OPV material of a typical solar cell, is subjected to effective acceptor-doping of iodine in order to achieve response to near-infrared bands. The near-infrared visible-light OPV iodine-doped photovoltaic organic detector has the advantages of being easy to achieve large area and large array, having controllable resistance of photosensitive layer material, being able to achieve flexible processing and the like, and has important application value in military, civil use and some specific fields.

The invention relates to the technical field of photocatalyst spray, and discloses photocatalyst spray for air purification, which is prepared from the following raw materials in parts by weight: 1 to10 parts of I-TiO2, 1 to 5 parts of nano titanium dioxide, 5 to 15 parts of polyethylene glycol, 5 to 20 parts of glycerol, 1 to 5 parts of tourmaline powder, 5 to 10 parts of nano silicon dioxide and 1 to 8 parts of nano silver. According to the photocatalyst spray, effects of the spray after iodine doping is superior to that of a pure TiO2 photocatalyst; the main reason is that on one hand, a new energy level can be introduced into a TiO2 energy band gap by an iodine element so that the band gap width of TiO2 is reduced and TiO2 surface properties and effects of enhancing photo-induced electron hole pair separation are achieved; on the other hand, impurity replacement is carried out after iodine enters TiO2 crystal lattices, so that oxygen vacancies and defects of photo-induced electroncenters capable of generating strong-oxidation active particles on the surface of TiO2 are increased, and the active effect of the photocatalyst is enhanced.

The invention provides an iodine-doped lead dioxide electrode, a production method of the electrode and application of the electrode to treatment of 4-CP in waste water. The iodine-doped lead dioxide electrode is sequentially composed of a titanium substrate, an alpha-PbO2 bottom layer electrically deposited on the titanium substrate and an iodine-doped beta-PbO2 active layer electrically deposited on the alpha-PbO2 bottom layer from inside to outside. The production process of the electrode is simple, the treatment cost is low, and the effect of removing 4-CP in the waste water is obvious. The produced electrode has the advantages of being low in manufacturing cost, high in activity and long in service life and has wide market development prospects in application of electro-catalysis treatment of 4-CP in the waste water.

The invention provides iodine-doped graphene-coated graded-hole Prussian blue nanospheres and a preparation method and application thereof. Inorganic acids are added to FeFe (CN) 6 nanosphere precursors at different temperatures for etching reaction to prepare FeFe (CN) 6 nanospheres with hollow graded-hole structures, and iodine-doped graphene is added for uniform and compact coating through an ultrasonic and freeze composite drying process to obtain the doped graphene-coated graded-hole Prussian blue nanospheres (namely FeFe (CN) 6 @ IG). According to the preparation method, the conductivityof the hollow graded hole FeFe (CN) 6 nanospheres can be further increased, and better performance can be maintained after multiple charging and discharging. A lithium ion battery negative electrodematerial prepared from the material has good capacity, good stability and recyclability, and the capacity maintenance rate is as high as more than 90%, and the preparation method is simple in process,convenient to operate, and suitable for large-scale industrial production.

The invention relates to the technical field of production of PTC thermistors, in particular to a PTC thermistor core material applied to an electric heater. The core material is prepared from the following raw materials in parts by weight: 50 parts of metallocene linear low-density polyethylene, 10-18 parts of iodine-doped polyacetylene, 5-8 parts of nano-montmorillonite, 1-3 parts of coconut diethanolamide, 1-4 parts of epoxy-tetrahydro-dioctyl phthalate, 1-2 parts of conductive tin oxide powder, 1-3 parts of titanium diboride powder, 1-3 parts of copper powder, 0.5-2 parts of dibutyltin dilaurate, 1-2 parts of stannous chloride, 2-4 parts of triethylene tetramine, 0.5-1 part of zinc fluoride, 2-5 parts of p-tert-butylbenzaldehyde and 3-7 parts of polyethylene glycol 400. The core material provided by the invention is good in resistance stability, uniform in temperature rise and high in tensile strength.

The present invention provides a composite photocatalyst and a preparation method and an application thereof. The composite photocatalyst can catalytically decompose water under a visible light condition so as to prepare hydrogen, and provides a new approach to develop and utilize new energy sources. The composite photocatalyst is prepared by using a nitrogen-containing organic compound and an iodine-containing compound as raw materials, by calcining the raw materials to obtain iodine doped carbon nitride (CNI), and by compounding the obtained CNI with silicon dioxide. The preparation method is simple and feasible, and has excellent operability.

The invention belongs to the field of inorganic nano photocatalytic materials, and particularly relates to an iodine-doped titanium dioxide-bismuth oxybromide composite photocatalyst and a preparationmethod thereof. Mesoporous silicon dioxide SBA-15 is used as a carrier; iodine, bismuth oxybromide and titanium dioxide in a certain proportion are loaded on the SBA-15 to prepare the iodine-doped titanium dioxide-bismuth oxybromide composite photocatalyst. The introduction of the iodine can make the composite material maintain a high adsorption capacity and an ordered pore structure which is noteasy to collapse, at the same time, agglomeration of TiO2 in the heat treatment process can be effectively prevented, and in addition, the iodine and the bismuth oxybromide (BiOBr) can also reduce the forbidden band width of TiO2 so as to further improve the photocatalytic degradation performance. The BiOBr and the TiO2 are introduced to the surface of the SiO2 mesoporous material, the synergistic photocatalysis effect can be achieved, the photocatalysis performance of the composite material can be effectively improved, and the degradation rate of the composite material to rhodamine B can reach 100% after a lamp is turned on for 10 min.

The invention relates to application of iodine doped graphene. An electrochemical sensing system based on iodine doped graphene material construction and for detecting bisphenol has the characteristics of high sensitivity, high stability and reusability.

The purpose of the present invention is to demonstrate that semiconducting and non-biodegradable implants made with polypyrrole and polyethylenglycol copolymers and iodine-doped and plasma-synthesised pyrrole polymers, have a neuroprotector effect and induce the reconnection of the spinal cord after an injury; this effect was proved in a model involving a complete section of the spinal cord in rats; the results o the functional evaluation demonstrated 5 times greater recovery in animals implanted with the polypyrrole-polyethylenglycol copolymer compared with the control group which only underwent a complete section of the spinal cord; in addition, the functional recovery of the group with iodine-doped polypyrrole was ten times greater compared to the control group; in the histological study various inflammatory and immune cells were identified at the injury site in the three experimental groups with and without implants and the integration of the polymers in the nervous tissue of the spinal cord was also observed; finally, no respiratory, renal or skin infections, adverse effects or rejection of the biomaterials were found in any of the animals.