The chemical properties and synthesis method of holmium oxide Ho2O3 powder

Overview of holmium oxide Ho2O3 powder

Holmium oxide, also known as holmium trioxide, has the chemical formula Ho2O3. It is a compound composed of rare earth element holmium and oxygen, and dysprosium oxide is one of the most paramagnetic substances known. Holmium oxide is one of the components of erbium oxide minerals. In its natural state, holmium oxide often coexists with trivalent oxides of lanthanides, and special methods are needed to separate them. Holmium oxide can be used to prepare glass with special colors. The visible absorption spectrum of glass and solution containing holmium oxide has a series of sharp peaks, so it is traditionally used as a standard for spectrophotometer calibration.

According to light conditions, holmium oxide has a significant color change. It is light yellow under sunlight, and strong orange-red under the three primary color light sources, which is almost indistinguishable from erbium oxide under the same illumination, which is related to its sharp phosphorescent emission band. Holmium oxide has a wide band gap of 5.3 eV, so it should be colorless. The yellow color of holmium oxide is caused by a large number of lattice defects (such as oxygen vacancies) and internal conversion of Ho3+.

The chemical properties of holmium oxide Ho2O3 powder

Holmium oxide reacts with hydrochloric acid or ammonium chloride to produce holmium chloride:

Ho2O3+ 6 NH4Cl → 2 HoCl3+ 6 NH3+ 3 H2O

Synthesis method of holmium oxide Ho2O3 powder

1. Burning method: The holmium nitrate solution is reacted with alkali to form holmium hydroxide, and then separated and burned to obtain holmium oxide.

2. Using holmium-containing rare earth enrichment as raw material, Ho3+ is separated by solvent extraction method or ion exchange method. Then an appropriate precipitating agent is added to prepare the corresponding precipitate, and finally the metal holmium is prepared by burning hydroxide, nitrate, oxalate or carbonate.

Application of holmium oxide Ho2O3 powder

It is used to manufacture new light source dysprosium holmium lamps, and can also be used as additives for yttrium-iron and yttrium-aluminum garnets and for preparing metal holmium.

Holmium oxide can be used as a yellow and red colorant for Soviet diamonds and glass. Glass containing holmium oxide and holmium oxide solution (usually perchloric acid solution) have sharp absorption peaks in the spectrum in the range of 200-900nm, so they can be used as standards for spectrometer calibration and have been commercialized. Like other rare earth elements, holmium oxide is also used as a special catalyst, phosphor and laser material. The wavelength of holmium laser is about 2.08 μm, and it can be pulsed or continuous light. This laser is harmless to the eyes and can be used in medicine, optical radar, wind speed measurement and atmospheric monitoring.

Holmium Oxide Ho2O3 powder price

The price of holmium oxide Ho2O3 powder will vary randomly with the production cost, transportation cost, international situation, exchange rate and market demand for holmium oxide Ho2O3 powder. Tanki New Materials Co., Ltd. aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full set of customized services. If you are looking for holmium oxide Ho2O3 powder, please feel free to send holmium oxide Ho2O3 powder at the latest price.

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