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By LZH | 17 August 2023 | 0 Comments

ZrO2 exhibits excellent properties

What is ZrO2?
ZrO2 is a metal oxide that exhibits three crystalline phases under atmospheric pressure, depending on the synthesis route: monoclinic, which is thermodynamically the most stable form; tetragonal, and cubic. The cubic form of ZrO2 is stable at high temperatures (usually above 2370 ◦C), while the tetragonal is stable within the range of 1170–2370 ◦C, and the monoclinic phase stabilizes below 1170 ◦C. Most of the applications for ZrO2 depend on its dimensions. It is well known that when the size of metal oxide materials is reduced to the nanoscale level, different properties are found from their bulk counterparts. Novel characteristics owed to quantum size effects may occur when the cluster size is smaller than the Bohr exciton radius. Moreover, the properties of the surface start to play a relevant role that may overrule the bulk ones. Hence, the synthesis method is paramount to control the size of ZrO2 nanomaterials and the crystalline phase, morphology, and lattice defects that highly influence the physico-chemical properties of the produced nanomaterials. ZrO2 nanomaterials have been obtained with different morphologies, such as thin films, nanoparticles, nanobelts, nanowires, and nanotubes, mainly through chemical approaches. The most common methods for synthesizing ZrO2 nanostructures include co-precipitation, sol-gel and solution combustion, sonochemical-assisted methods, chemical vapor deposition, emulsion processing routes, hydrothermal, and microwave syntheses. Lately, a continuous increase in research work has been observed related to fast continuous methods for controlling the synthesis of ZrO2 nanomaterials. Continuous hydrothermal. Flow synthesis (CHFS) processes are preferred due to the possibility of tailoring and obtaining unique nanoparticle properties that cannot be achieved using more conventional batch hydrothermal or other synthesis methods. These processes have shown potential in manufacturing reproducible and homogeneous nanomaterials, with high throughput, and being energy efficient and eco-friendly, since for this last case, water is typically used rather than toxic organic solvents. Annealing treatments can also be avoided by employing these processes with superheated water conditions (typically 200−400 ◦C). Even though these systems offer several benefits, their high cost is a downside.

ZrO2 exhibits excellent properties
Such as good optical transparency in the visible and near-infrared spectral range, high thermal and chemical stabilities, mechanical strength and fracture toughness, low absorption of light, high index of refraction, high corrosion resistance, high ionic stability at high temperatures, it is biocompatible. It presents a relatively low leakage current and a high breakdown field. Despite this, ZrO2 presents a wide band gap value (theoretically estimated as ~5.42 eV for monoclinic, ~6.40 eV for tetragonal, and ~5.55 eV for cubic phases. The introduction of defects in its structure, for instance, through doping with cations or the reduction of particle size below a critical value, is reported to allow the stabilization of high-temperature phases (i.e., cubic and tetragonal phases) at RT. Applications for this material range from the ceramic industry, gas sensing, solar fuel cells, and biomedical/catalytic fields to its incorporation in large-scale integrated circuits, owing to a high dielectric constant and as a gate dielectric in metal-oxide-semiconductor devices (MOS). In this regard, ZrO2 has emerged as a potential alternative to replace low-κ SiO2 in electronic devices. It is reported that the dielectric constant of ZrO2 films ranges from κ = 20 in the monoclinic phase to κ = 37–47 for the cubic and tetragonal phases. In contrast, in the case of amorphous ZrO2, the dielectric constant values are between 14 and 25.

Recently ZrO2-based materials have been explored in the field of energy
Optimization of the light absorption towards sunlight in zirconia has shown enormous potential for its use in solar receivers since this refractory material possesses enhanced mechanical/thermal properties and oxidation resistance, being a competitive material to substitute the typically used silicon carbide (SiC). Other applications include refractory/metal production. In addition, it has demonstrated high energy storage performance, for instance, by employing ferroelectric ZrO2 thin films as energy storage capacitors or antiferroelectric ZrO2, a material for dynamic random access memories (DRAM). Moreover, ZrO2 capacitors display ultra-high power density and ultra-fast charge/discharge rates. Yet, their energy storage densities are relatively lower than the traditional electrical energy-storage devices, such as supercapacitors and batteries. Nevertheless, these devices can play a key role in energy saving and thus reducing the carbon dioxide (CO2) footprint. When associated with renewable energy sources, capacitors can have a real impact on climate change, influencing almost all sectors of human life, including the chemical/petrochemical, automotive, textiles, wood/paper, and construction sectors, whereas, for the latter, with the advent of the zero carbon buildings, it can reduce the global greenhouse gas emissions emitting buildings. The future of humanity relies on addressing the availability of using carbon-neutral energy sources and finding solutions to lower the CO2 footprint, industrial residues, and human contaminants with a direct impact on public health and the environment.

Price of ZrO2
ZrO2 particle size and purity will affect the product's Price, and the purchase volume can also affect the cost of ZrO2. A large amount of large amount will be lower. The Price of ZrO2 is on our company's official website.

ZrO2 supplier
Luoyang Tongrun Nano Technology Co. Ltd.  (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including foam concrete, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective foam concrete, you are welcome to contact us or inquire at any time.

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