Titanium dioxide nanomaterials are widely used in many fields due to their unique physical and chemical properties. The following are some of the main uses of titanium dioxide nanomaterials:
Photocatalytic applications: Titanium dioxide nanomaterials have excellent photocatalytic properties and can be used for degradation of organic pollutants in water, air purification, antibacterial and mildew-proofing, etc. In terms of environmental protection, titanium dioxide nanomaterials are widely used to degrade organic pollutants in air and water. For example, Titanium dioxide nanoparticles can effectively decompose harmful substances such as halogenated aliphatic hydrocarbons, halogenated aromatic hydrocarbons, organic acids, nitroaromatic hydrocarbons in wastewater, and finally generate harmless substances. In addition, Titanium dioxide nanomaterials are also used in air purification and can degrade volatile organic pollutants (VOCs) in the atmosphere, such as phenol and other harmful gases. In terms of energy conversion, Titanium dioxide nanomaterials perform well in photocatalytic water splitting to produce hydrogen and photoelectric conversion. For example, Titanium dioxide nanosheets have become a good carrier for photocatalytic water splitting to produce hydrogen due to their highly active surface exposure characteristics. In addition, Titanium dioxide-based materials are also used in photoelectrochemical reactors and sensor materials, demonstrating their potential in energy conversion and environmental monitoring. In the agricultural field, Titanium dioxide nanomaterials, as an emerging resource, are being studied to solve the growth, harvesting and post-harvest problems in agriculture. The application of this material can help to meet global environmental challenges and improve the sustainability of agricultural production. Although titanium dioxide nanomaterials have many advantages, they also have some limitations, such as their wide band gap limits their ability to respond to visible light. Therefore, researchers have expanded their spectral response range through methods such as doping modification and surface photosensitization to improve their photocatalytic activity under visible light.
Biomedical applications: Titanium dioxide nanomaterials have important applications in drug delivery, imaging diagnosis, biosensing, etc., and their good biocompatibility and bioactivity make them an ideal choice for medical materials. Titanium dioxide nanoparticles can effectively inhibit the growth of bacteria and fungi through ultraviolet light-induced photocatalytic activity, which makes them have important application potential in the antibacterial field. Titanium dioxide nanomaterials are widely used in cancer treatment due to their excellent phototherapeutic activity. For example, by combining chemotherapy and photodynamic therapy, Titanium dioxide nanosystems can enhance the therapeutic effect on cancer cells. In addition, Titanium dioxide nanorods have also been studied for enhancing immune function to support tumor immunotherapy. Titanium dioxide nanotubes are used in orthopedic implants and bone regeneration due to their ability to promote osteogenic differentiation of bone marrow mesenchymal stem cells. These nanotubes can also be used as drug reservoirs for loading and sustained release of bioactive molecules such as bone morphogenetic protein, thereby increasing the rate of bone integration. Titanium dioxide nanomaterials are used to develop new drug delivery systems due to their good biocompatibility and adjustable surface properties. For example, Titanium dioxide nanocomposites are used to combine drug molecules with biopolymers to prepare nanocomposites with high optical transparency for skin drug delivery. Titanium dioxide nanomaterials are used to manufacture biosensors and various types of implants due to their excellent electrochemical properties and biocompatibility. For example, Titanium dioxide nanofibers and nanowire arrays can be used in biosensors and bioimplants to monitor and treat diseases. Titanium dioxide nanomaterials also exhibit significant antibacterial and antioxidant properties, which can protect cells from oxidative damage and have potential in fighting microbial infections.
Environmental governance: Titanium dioxide nanomaterials perform well in wastewater treatment, air purification, soil remediation, etc., and can effectively remove harmful substances from water and air. Due to its photocatalytic properties, titanium dioxide nanomaterials can effectively degrade organic pollutants in wastewater, such as halogenated aliphatic hydrocarbons, halogenated aromatic hydrocarbons, organic acids, nitroaromatic hydrocarbons, polycyclic aromatic hydrocarbons, etc. In addition, it can also be used to remove heavy metal ions in water and change the distribution of heavy metals in water through adsorption and agglomeration. Research institutions in Japan and China have developed new wastewater treatment systems using titanium dioxide photocatalysis, which perform well under cloudy conditions. Titanium dioxide nanomaterials also show significant effects in air purification. It can convert pollutants in the air such as nitrogen oxides (NOx), sulfur oxides, and volatile organic compounds (VOCs) into more environmentally friendly products such as nitrates and carbon dioxide. Experiments have shown that nano-titanium dioxide coating materials have good photocatalytic degradation performance in applications on road surfaces and roadside areas. Titanium dioxide nanomaterials are also used to repair soil contaminated by heavy metals. Its high specific surface area and abundant active sites enable it to effectively adsorb heavy metal ions in the soil and promote the reduction and fixation of heavy metal ions, thereby reducing the toxicity of heavy metals in the soil.
Daily necessities and industrial applications: Titanium dioxide nanomaterials are widely used in cosmetics (such as sunscreen), coatings, inks, food packaging materials, textiles and other fields, and are favored for their anti-ultraviolet, antibacterial and mildew-proof properties. In terms of daily necessities, titanium dioxide nanomaterials are mainly used in cosmetics, food packaging, antibacterial daily necessities, etc. For example, it is added to sunscreen as a UV filter because of its ability to shield ultraviolet rays while maintaining high transparency and good covering power. In addition, titanium dioxide nanomaterials are also used in sanitary daily necessities such as antibacterial tableware, antibacterial carpets and antibacterial floor tiles to provide antibacterial functions. In terms of industrial applications, titanium dioxide nanomaterials are widely used. It is used in coatings, inks, plastics, textiles and other fields. For example, in coatings, titanium dioxide nanomaterials can improve the aging resistance and UV resistance of coatings. In the plastics industry, titanium dioxide nanomaterials are used as fillers to improve the strength and fire resistance of plastic products. In addition, titanium dioxide nanomaterials are also used in the papermaking industry to make paper brighter and UV-resistant.
Energy storage: Adding titanium dioxide nanomaterials to lithium batteries can improve the capacity and cycle stability of the battery, especially the electrochemical stability during multiple charge and discharge processes.
Titanium dioxide (Titanium dioxide) nanomaterials have broad application prospects in the field of energy storage, mainly reflected in the following aspects:
1. Lithium-ion batteries: Titanium dioxide nanomaterials are widely studied as electrode materials for lithium-ion batteries due to their excellent electrochemical properties and safety. For example, one-dimensional titanium dioxide nanorod arrays are directly used as lithium-ion battery anode materials, showing good cycle stability and long life in charge and discharge tests, demonstrating its great potential in practical energy storage applications. In addition, its performance can be further improved by methods such as doping and surface modification.
2. Sodium-ion batteries: Titanium dioxide is also used in the study of electrode materials for sodium-ion batteries. Researchers have developed a new synthetic procedure that combines thermally driven self-assembled nanomicelles with seed-assisted chemistry to prepare complex titanium dioxide nanostructures for use as electrode materials in sodium-ion batteries, demonstrating their potential for application in sodium-ion storage mechanisms.
3. Supercapacitors: Titanium dioxide nanoparticles are also used in supercapacitors due to their high conductivity and large surface area. Their large surface area is conducive to increasing the charging and discharging speed of the battery, thereby improving the performance of supercapacitors.
4. Phase change energy storage: Titanium dioxide nanomaterials are also used in phase change energy storage research. Due to their low cost, non-toxicity, high conductivity and high thermal stability, titanium dioxide nanoparticles can be combined with phase change materials to further expand their application range in thermal energy storage.
5. Dye-sensitized solar cells (Grätzel cells): Titanium dioxide nanoparticles are widely used in dye-sensitized solar cells due to their large surface area and efficient electron transport ability, which improves light absorption capacity and battery efficiency.
6. Other applications: In addition to the above main applications, titanium dioxide nanomaterials also show great potential in other energy storage and conversion fields such as fuel cells, solid oxide fuel cells (SOFC), etc.
Self-cleaning and anti-fog function: Due to its super hydrophilicity and self-cleaning ability, titanium dioxide nanomaterials are used to make self-cleaning glass, car rearview mirrors and other products
New energy materials: In new energy fields such as solar cells and fuel cells, titanium dioxide nanomaterials are widely used due to their high efficiency and stable performance.
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