Preparation method of Fe2O3/BiOCl nano-composite powder

A nanocomposite powder, fe2o3 technology, applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of inconspicuous pearlescent effect, and achieve the effect of good pearlescent effect, low cost and simple synthesis process

Inactive Publication Date: 2013-08-14
HARBIN UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

[0003] The purpose of the present invention is in order to solve single application Fe 2 o 3 Or when BiOCl catalyzes organic matter, when used as a paint additive, the technical problem that the pearlescent effect is not obvious, provides a kind of Fe 2 o 3 Preparation method of / BiOCl nanocomposite powder

Method used

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  • Preparation method of Fe2O3/BiOCl nano-composite powder
  • Preparation method of Fe2O3/BiOCl nano-composite powder

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specific Embodiment approach 1

[0015] Specific implementation mode one: Fe in this implementation mode 2 o 3 The preparation method of / BiOCl nanocomposite powder is carried out according to the following steps:

[0016] 1. Dissolving bismuth nitrate in nitric acid, stirring evenly, adding water to dilute to obtain bismuth nitrate solution, the concentration of bismuth nitrate in the bismuth nitrate solution is 0.0001-0.02mol / L, and the concentration of nitric acid is 0.02-10mol / L;

[0017] 2. Prepare an ammonia solution with a concentration of 0.001-2mol / L;

[0018] 3. Add the ammonia water and the bismuth nitrate solution dropwise into the water container while stirring, and control the pH value of the system to be 7-10 during the dropwise addition to obtain the bismuth hydroxide colloid;

[0019] 4. Dissolving ferric chloride into water to obtain a ferric chloride solution with a concentration of 0.005 to 0.02mol / L;

[0020] 5. Polyethylene glycol is dissolved in water to obtain an aqueous solution of...

specific Embodiment approach 2

[0023] Embodiment 2: This embodiment differs from Embodiment 1 in that the concentration of bismuth nitrate in the bismuth nitrate solution in step 1 is 0.001-0.015 mol / L, and the concentration of nitric acid is 0.2-8 mol / L. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0024] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the concentration of bismuth nitrate in the bismuth nitrate solution in step 1 is 0.008 mol / L, and the concentration of nitric acid is 0.9 mol / L. Others are different from the first or second specific embodiment.

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Abstract

The invention relates to a preparation method of composite powder, and in particular relates to a preparation method of Fe2O3 / BiOCl nano-composite powder. The preparation method aims to solve the technical problem that when Fe2O3 or BiOCl is separately applied to catalyzing organics and serves as a coating additive, the pearl effect is not obvious. The method comprises the following steps of: 1, dissolving bismuth nitrate in nitric acid, uniformly stirring, diluting with water to obtain a bismuth nitrate solution; 2, preparing an ammonia water solution; 3, preparing a bismuth hydroxide colloid; 4, preparing a ferric chloride solution; 5, dissolving polyethylene glycol in water to obtain a polyethylene glycol water solution; and 6, mixing the bismuth hydroxide colloid, the ferric chloride solution and the polyethylene glycol water solution, pouring the mixture into a hydrothermal kettle, holding the temperature and obtaining the Fe2O3 / BiOCl nano-composite powder after naturally cooling. The Fe2O3 / BiOCl nano-composite powder obtained by adopting the method is simple in synthesis process, low in cost and good in pearl effect and can be recycled when serving as a photocatalyst.

Description

technical field [0001] The invention relates to a preparation method of composite powder. Background technique [0002] In recent years, uniform dispersion has developed rapidly, and has been widely used in catalysts, functional ceramics, sensors, superconductors, coatings, and medicine and cosmetics. At present, composite pearlescent pigments are mainly obtained by mixing two or more pigments. Due to the uneven mixing of powders, the color difference of composite powders obtained is relatively large, which affects the pearlescent effect; in addition, Bi-based compounds have special properties. The layered structure and the appropriate size of the forbidden band width have attracted much attention in the process of studying new photocatalytic materials. Photocatalytic materials can decompose organic pollutants into small inorganic molecules, such as water and carbon dioxide, and have the advantages of low cost, high efficiency, and no secondary pollution. Single Applicatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/06C01G29/00B82Y30/00
Inventor 刘刚迟庆国杨志韬张昌海
Owner HARBIN UNIV OF SCI & TECH
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