Abstract: Disclosed are a Z-type heterojunction composite material of a tungsten oxide nanorod/a titanium carbide quantum dot/an indium sulfide nanosheet, a preparation method therefor and an application thereof. The method includes: preparing a titanium carbide quantum dot by using freeze-thaw and ultrasound methods for multiple times, and then placing a tungsten trioxide nanorod prepared by a hydrothermal method into a titanium carbide quantum dot aqueous solution, stirring same, and then standing same to obtain a tungsten oxide nanorod loading a quantum dot; stirring and uniformly mixing an indium compound and a sulfur compound in an ethylene glycol solvent, and then adding the tungsten oxide nanorod loading the quantum dot, and performing a reflux reaction at constant temperature to obtain the composite material. The titanium carbide quantum dot of the present invention can provide good electron transport channels at different semiconductor interfaces.

Abstract: A bismuth iodide oxide/zinc oxide composite material, a preparation method therefor and an application thereof in piezoelectric photocatalytic removal of organic pollutants. The conductive substrate spin-coated with a zinc oxide seed solution is annealed and added to the precursor solution for reaction to obtain a zinc oxide nanorod array (ZnO NRs); the zinc oxide nanorod array is added into a bismuth iodide precursor solution for reaction to obtain the bismuth iodide oxide/zinc oxide composite material (BiOI/ZnO NAs). The composite material is put into an aqueous solution containing bisphenol A, adsorption is performed in the dark for half an hour, and then ultrasound and visible light are used together to remove organic pollutants in the water. After piezoelectric photocatalytic degradation of 90 minutes, bisphenol A in the aqueous solution is almost completely degraded.

Abstract: Melamine is calcined to obtain melem; melem, perylene tetracarboxylic dianhydride and a solvent are mixed to obtain a mixture, and the mixture is subjected to a solvothermal reaction in an inert atmosphere to obtain perylene imide; and the perylene imide is dispersed in an aqueous solution containing a bismuth source and a tungsten source, and is subjected to a hydrothermal reaction to obtain a perylene imide/bismuth tungstate composite photocatalytic material. By means of constructing an organic-inorganic composite photocatalytic material, the introduction of the organic photocatalytic material that responds to visible light may enable the composite material to have a wider spectral response range; and the introduction of an inorganic semiconductor catalyst enables the composite material to produce more oxidizing active free radicals, thereby enhancing the photocatalytic degradation performance of the composite material on organic pollutants.

Abstract: A method for preparing a porous-polymer-modified metal carbon nanotube membrane includes: preparing an acidified carbon nanotube membrane; preparing a modification solution; heating the acidified carbon nanotube membrane in the modification solution and reacting to obtain a metal carbon nanotube membrane; conducting a polymerization reaction to obtain a crude polymer product; coating the metal carbon nanotube membrane with a polyethylene glycol diglycidyl ether (PEGDEG) solution; coating the metal carbon nanotube membrane with a porous polymer solution; and heating the metal carbon nanotube membrane to obtain the porous-polymer-modified metal carbon nanotube membrane. A porous-polymer-modified metal carbon nanotube membrane is prepared according to this method.

Abstract: Monodisperse polystyrene microspheres are self-assembled on a conductive surface of FTO glass by vertical deposition method to prepare three-dimensional ordered photonic crystal opal template; the three-dimensional ordered photonic crystal opal template is immersed in a solution containing rhodium source, titanium source and strontium source, and is then calcined to prepare a rhodium doped strontium titanate inverse opal material; and the rhodium doped strontium titanate inverse opal material is added to water containing pollutants, and is then subjected to illumination and/or ultrasonic treatment to complete the removal of the pollutants in the water. The three-dimensional ordered macroporous rhodium doped strontium titanate inverse opal material may be applied in the field of photocatalysis.

Abstract: Disclosed in the present invention is an application of a metal sulfide piezoelectric material in piezoelectric catalytic reduction of CO2. The internal electric field generated by the piezoelectric material under external mechanical stimulation pushes electrons and holes to migrate in opposite directions, so that natural advantages are provided for separation and transmission of electron-hole pairs, but there is no report in the prior art that CO2 is reduced into C2+ products by means of piezoelectric catalysis. The present invention provides a metal sulfide piezoelectric nanomaterial and a preparation method therefor. The metal sulfide piezoelectric nanomaterial is used for piezoelectric catalytic reduction of CO2 for the first time, especially piezoelectric catalytic reduction of CO2 to obtain C2+ products so as to broaden the technical route of catalytic reduction of CO2.

Abstract: The present invention provides a method for synthesizing a bifunctional pure organic photocatalytic material with the capabilities of fast adsorption and efficient degradation. By means of reasonably introducing a perylene imide group into an amphiphilic block copolymer, a micelle for treating contaminants in water is formed by self-assembly. The present invention features the advantages in that the micelle formed by self-assembly of the perylene-based amphiphilic block polymer is uniform in size, exhibits ultra-high adsorption capacity on bisphenol A, and can rapidly reach a stable adsorption equilibrium at various concentrations or temperatures. The micelle also demonstrates, in a mixed phenol solution, significant recognition selectivity and good affinity for bisphenol A. In addition, the micelle has rapid degradation efficiency on bisphenol A. The present invention provides a new design concept for the advanced treatment of wastewater by using a metal-free organic material.

Abstract: A method for purifying dye-containing wastewater based on a porous-polymer-modified metal carbon nanotube membrane includes: (1) preparing the porous-polymer-modified metal carbon nanotube membrane; and (2) passing the dye-containing wastewater through the porous-polymer-modified metal carbon nanotube membrane to remove dyes in the dye-containing wastewater. A device for purifying dye-containing wastewater is also disclosed. The device includes the porous-polymer-based metal carbon nanotube membrane.

Abstract: A perfluoro compound includes perfluorobutyl ethylene (PFBE) and a fluoroalkane. The perfluoro compound has an azeotropic point between 40 degrees Celsius and 60 degrees Celsius, inclusive.

Abstract: Please replace the following substitute abstract for the abstract currently on file: Disclosed are a monomer for a polymer gel, a polymer gel and a preparation method therefor. The preparation method includes: reacting 4,4?,4?-trihydroxytriphenylmethane with tert-butyldimethylchlorosilane to obtain TPC-OTBS; reacting 4,4?,4?-trihydroxy triphenylmethane with sulfuryl fluoride in the presence of triethylamine to prepare TPC-OSO2F; and dissolving the TPC-OTBS and TPC-OSO2F in DMF, then adding DBU and ultrasonically dispersing same until uniform, and letting same stand to obtain a polymer gel. The gel obtained by the present invention can selectively adsorb an organic solvent by means of electrostatic interaction and Van der Waals force. The surface and internal morphologies of a solid material are characterized by SEM and TEM, in which the porous morphology of the solid material is found, and most of the pores are macropores.

Abstract: A TPC—OTBS n-hexane solution is added to a mixture of TPC—OSO2F, DMF, and DBU and allowed to stand to produce a crosslinked solvent gel; the crosslinked solvent gel is added to methanol, stirred, and dried to produce the porous crosslinked material. The gel acquired can be prepared into a pore-rich solid porous organic polymer material by means of solvent exchange. SEM and TEM are used to characterize the surface and internal morphologies of the solid material, and the porous morphology thereof is discovered, with large pores being the majority. Infrared and nuclear magnetic resonance are used to characterize the structure of a crosslinked polysulfate; the complete reaction of a sulfuryl fluoride group is proven by means of solid-state fluorine nuclear magnetic resonance spectroscopy and XPS element analysis; and the porous structure of the crosslinked polysulfate allows same to be provided with improved application prospect in terms of adsorption.

Abstract: Disclosed are a Z-type heterojunction composite material of a tungsten oxide nanorod/a titanium carbide quantum dot/an indium sulfide nanosheet, a preparation method therefor and an application thereof. The method includes: preparing a titanium carbide quantum dot by using freeze-thaw and ultrasound methods for multiple times, and then placing a tungsten trioxide nanorod prepared by a hydrothermal method into a titanium carbide quantum dot aqueous solution, stirring same, and then standing same to obtain a tungsten oxide nanorod loading a quantum dot; stirring and uniformly mixing an indium compound and a sulfur compound in an ethylene glycol solvent, and then adding the tungsten oxide nanorod loading the quantum dot, and performing a reflux reaction at constant temperature to obtain the composite material. The titanium carbide quantum dot of the present invention can provide good electron transport channels at different semiconductor interfaces.

Abstract: A method for the low-temperature heat treatment of toluene by using a composite material having a ternary NiO nanosheet @ bimetallic CeCuOx microsheet core-shell structure. The composite material having the ternary NiO nanosheet @ bimetallic CeCuOx microsheet core-shell structure is placed in an environment containing toluene, and is heated at a low temperature to complete the treatment of toluene. The use of precious metal particles loading is avoided for the catalyst, and the costs of materials is thus greatly reduced. Moreover, nickel oxide grows on CeCuOx microsheet nanosheets. The preparation process is relatively simple, and the catalytic performance on toluene is excellent. Therefore, the method has high economical practicability and research value. The 3Ni/CeCuOx catalyst may completely catalyze toluene at 210° C., which has great research significance and certain application prospects for the actual solution of toluene polluted gas in the air environment.

Abstract: Provided are a ternary composite material having a NiO nanosheet/bimetallic CeCuOx microsheet core-shell structure, and a preparation method therefor, and an application thereof. CeCuOx has a large specific surface area and high stability. A NiO/CeCuOx core-shell structured composite material catalyst is prepared by growing NiO nanosheets on the surface of CeCuOx by low-temperature hydrothermal treatment and heat treatment. The bimetallic CeCuOx microsheet shows better catalytic performance for toluene than monometallic oxides, i.e., copper oxide and cerium oxide. The further growth of the NiO nanosheets having different concentrations effectively improves catalytic activity. A 3Ni/CeCuOx catalyst can realize complete catalysis of toluene at 210° C.

Abstract: he invention discloses a porphyrin-based metal coordination conjugated polymer, a preparation method therefor, and an application thereof in photocatalytic degradation of organic pollutants. The catalyst of the present invention has an 18?-conjugated skeleton, a nearly planar macrocyclic molecule, a stable rigid structure and a very stable highly conjugated system, so that the catalyst has excellent photoelectric conversion efficiency, a wide range of absorption spectra, strong redox capacity, and good chemical and thermal stability. A metal coordinated porphyrin acts as active center, a large number of derivatives can be derived, and the method has emerged as a promising alternative for the photocatalytic degradation of environmental pollutants and the like.

Abstract: The invention discloses a phosphorus-doped tubular carbon nitride micro-nano material and application thereof in waste gas treatment. Melamine is partially hydrolyzed into cyanuric acid through a phosphorous acid-assisted hydrothermal method to form a melamine-cyanuric acid super molecular precursor; the center of the precursor starts to be pyrolyzed under heating calcination, and thus phosphorus-doped tubular carbon nitride is obtained; the phosphorus-doped tubular carbon nitride and sodium borohydride are mixed and subjected to low-temperature calcination in an inert gas atmosphere, and defect-modified phosphorus-doped tubular carbon nitride is obtained.

Abstract: Melamine is calcined to obtain melem; melem, perylene tetracarboxylic dianhydride and a solvent are mixed to obtain a mixture, and the mixture is subjected to a solvothermal reaction in an inert atmosphere to obtain perylene imide; and the perylene imide is dispersed in an aqueous solution containing a bismuth source and a tungsten source, and is subjected to a hydrothermal reaction to obtain a perylene imide/bismuth tungstate composite photocatalytic material. By means of constructing an organic-inorganic composite photocatalytic material, the introduction of the organic photocatalytic material that responds to visible light may enable the composite material to have a wider spectral response range; and the introduction of an inorganic semiconductor catalyst enables the composite material to produce more oxidizing active free radicals, thereby enhancing the photocatalytic degradation performance of the composite material on organic pollutants.

Abstract: Disclosed are a P—N heterojunction composite material supported on the surface of nickel foam, a preparation method therefor and the application thereof. The composite material is a supported catalyst which can be used to remove pollutants in water by means of photoelectrocatalysis. The method comprises firstly modifying, by means of a hydrothermal method, a layered nickel-iron bimetallic hydroxide nanosheet on the surface of clean nickel foam, and then modifying cobalt oxide nanowires on the surface of the layered nickel-iron bimetallic hydroxide nanosheet by means of a mixed solvent-thermal method, so as to obtain a P—N heterojunction catalyst composite material supported on the surface of nickel foam (Ni foam@NiFe-LDH/Co3O4). The composite material has a good response to visible light, which can greatly enhance the absorption and utilization of light, and is further beneficial to enhance the performance of the catalyst.

Abstract: Monodisperse polystyrene microspheres are self-assembled on a conductive surface of FTO glass by vertical deposition method to prepare three-dimensional ordered photonic crystal opal template; the three-dimensional ordered photonic crystal opal template is immersed in a solution containing rhodium source, titanium source and strontium source, and is then calcined to prepare a rhodium doped strontium titanate inverse opal material; and the rhodium doped strontium titanate inverse opal material is added to water containing pollutants, and is then subjected to illumination and/or ultrasonic treatment to complete the removal of the pollutants in the water. The three-dimensional ordered macroporous rhodium doped strontium titanate inverse opal material may be applied in the field of photocatalysis.

Abstract: A bismuth iodide oxide/zinc oxide composite material, a preparation method therefor and an application thereof in piezoelectric photocatalytic removal of organic pollutants. The conductive substrate spin-coated with a zinc oxide seed solution is annealed and added to the precursor solution for reaction to obtain a zinc oxide nanorod array (ZnO NRs); the zinc oxide nanorod array is added into a bismuth iodide precursor solution for reaction to obtain the bismuth iodide oxide/zinc oxide composite material (BiOI/ZnO NAs). The composite material is put into an aqueous solution containing bisphenol A, adsorption is performed in the dark for half an hour, and then ultrasound and visible light are used together to remove organic pollutants in the water. After piezoelectric photocatalytic degradation of 90 minutes, bisphenol A in the aqueous solution is almost completely degraded.