10 results about "Titanium dioxide nanoparticles" patented technology

This invention relates to the field of self-cleaning coating materials, and discloses the preparation and application of a nanofiber-confined Fe single-atom self-cleaning coating material. The invention uses wood nanofibers as a carbon-based carrier to obtain nanofiber-confined Fe single-atom materials. The three-dimensional network structure generated during the acidic hydrolysis of methyl orthosilicate enhances the bonding between the nanofiber-confined Fe single-atom materials, nano-silica, and nano-titanium dioxide nanoparticles. After hydrolysis, a diluent is added, and the reaction proceeds to obtain the nanofiber-confined Fe single-atom self-cleaning coating material. This self-cleaning coating material has a simple process, high operability, excellent antistatic properties, superhydrophilicity, and photocatalytic activity. It exhibits excellent anti-fouling potential in self-cleaning coating material applications and has broad application prospects.

This invention relates to a sialylated glycoprotein detection reagent, its preparation method, and its application, belonging to the field of biodetection technology. The detection reagent uses purified water as a solvent and comprises the following components: surface-modified titanium dioxide nanomaterials, metal ions, a pH adjuster, and a solvent. The surface-modified titanium dioxide nanomaterials are obtained by dispersing titanium dioxide nanoparticles in an organic solvent and reacting them with a silane coupling agent. The pH value of the sialylated glycoprotein detection reagent is ≥ 8.0. The reagent of this invention utilizes the high affinity of modified titanium dioxide nanomaterials for sialic acid to specifically aggregate sialylated glycoproteins in blood into particles, facilitating observation. This reagent exhibits good stability, high sensitivity, and strong specificity, making it suitable for rapid tumor screening of blood smear samples.

The application discloses a preparation method of visible light response water dispersible titanium dioxide nanomaterial. Under a solvothermal condition, in an alcoholysis process of alkoxy titanate, the alcohol hydroxyl is oxidized into aldehyde group by sodium hypochlorite by using the reducing property of low-carbon dihydric alcohol, and is further oxidized into carboxyl group, which is adsorbed on the surface of newly generated titanium dioxide nanoparticles to give the material excellent water dispersibility. Meanwhile, the oxidation product, chlorine ion, enters the titanium dioxide lattice to form chlorine ion doped titanium dioxide nanomaterial, which expands the absorption spectrum of titanium dioxide to the visible light region and improves the utilization efficiency of sunlight.

This application relates to the technical field of food testing, specifically disclosing a gas chromatography-mass spectrometry (GC-MS) method for detecting flavor components in baked goods based on a modified composite extraction layer. The modified composite extraction layer disclosed in this application comprises the following components: modified activated carbon, PDMS prepolymer, polyethylene glycol, a functionalized metal composition, a curing agent, a solvent, a dispersant, and a photoinitiator. The modified activated carbon is prepared by immersing it in an ethanol solution of a silane coupling agent, ultrasonically treating it, drying it, and then treating it with argon plasma. The functionalized metal composition consists of zinc oxide nanoparticles and titanium dioxide nanoparticles with a particle size of 20-80 nm. The composite extraction layer and detection method disclosed in this application solve the problems of low accuracy in flavor detection under high moisture and high matrix interference conditions in baked goods, easy decomposition of heat-sensitive flavors, and weak anti-contamination ability of the extraction layer. It can achieve efficient, accurate, and stable detection of multiple flavor components in baked goods.

The application discloses a disposable foldable sunscreen mask based on mask material and belongs to the technical field of sunscreen products. The mask comprises a mask body made of non-woven fabric material for masks, and the outer surface of the mask body is coated with a sunscreen coating layer containing titanium dioxide nanoparticles with a thickness of 0.01-0.03 mm. The mask can be folded and stored as a whole, and after being unfolded, the mask is in the shape of a mask and is adapted to the contour of the face. The mask is provided with a silica gel elastic edge around the eyes and a mouth and nose opening, and the two side edges are connected with elastic ear hooks with adjustable length. The application has the advantages of low cost, disposable use, good sunscreen effect, foldable portability, comfortable wearing and wide application.

The application belongs to the field of composite material preparation, and particularly relates to a passive cooling composite material and a preparation method thereof. The passive cooling composite material has the characteristics of low ultraviolet-visible-near-infrared transmittance and high mid-infrared radiation transmittance, and the cooling effect reaches 3.79 DEG C in outdoor direct sunlight cooling test. The composite material comprises a bottom film, an intermediate film layer and a passive cooling film layer arranged from bottom to top. The intermediate film layer is composed of the following raw materials: polyester chips, modified polyester, modified kaolin, vinyl bis-stearamide, calcium stearate and antioxidant. The passive cooling film layer is composed of the following raw materials: low-density polyethylene and modified titanium dioxide nanoparticles. The composite material prepared in the application shows good cooling effect, and provides a new idea for the preparation of radiation cooling materials and functional application in the textile field.

The application discloses a composite self-cleaning fiber membrane based on a friction nanogenerator and a preparation method thereof. The composite self-cleaning fiber membrane is composed of polyvinylidene fluoride nanofibers, single-walled carbon nanotubes and titanium dioxide nanoparticles. The single-walled carbon nanotubes are combined on the fiber filaments of the polyvinylidene fluoride nanofibers. The titanium dioxide nanoparticles are discretely attached to the surface of the fiber filaments of the polyvinylidene fluoride nanofibers. When serving as a friction layer of the friction nanogenerator, the composite self-cleaning fiber membrane can realize high electric output performance and ultraviolet light-driven self-cleaning function simultaneously, and effectively solves the performance attenuation problem caused by membrane pollution in an outdoor polluted environment.

This application belongs to the field of capacitor technology, and particularly relates to a modified polyimide dielectric film material, its preparation method, and its application. The provided modified polyimide dielectric film material uses polarized modified dianhydride / titanium dioxide nanoparticles to modify the dielectric film material, thereby improving its energy storage characteristics at high temperatures. The film capacitor assembled after being made into a metallized film is suitable as an energy storage device at high temperatures. This solves the technical problem of low performance of polyimide dielectric film materials in the prior art.