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Preparation method of floating bead loaded bismuth oxyiodide catalyst

A technology of bismuth oxyiodide and photocatalyst, which is applied in the field of preparation of bismuth oxyiodide photocatalyst supported by floating beads, can solve the problems that bismuth oxyiodide is not easy to recycle, and achieve the effects of low price, high catalytic efficiency and stable performance

Inactive Publication Date: 2018-11-30
深圳市华世纪联合企业管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to solve the technical problem that bismuth oxyiodide is not easy to recycle in the prior art, the present invention provides a preparation method of bismuth oxyiodide photocatalyst supported by floating beads

Method used

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  • Preparation method of floating bead loaded bismuth oxyiodide catalyst
  • Preparation method of floating bead loaded bismuth oxyiodide catalyst

Examples

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Effect test

Embodiment 1

[0031] A kind of preparation method of floating bead loaded bismuth oxyiodide photocatalyst, comprises the following steps:

[0032] Step 1: Pour the fly ash into a beaker filled with distilled water, stir and let it stand, and sort out the floating beads floating on the water surface;

[0033] Step 2: Soak the sorted floating bead particles in 10% dilute nitric acid for 10 hours to remove impurities attached to the floating beads, rinse with distilled water for several times until the rinse solution is neutral, and then use filter paper Filter, and then dry with an electric blast drying oven at a drying temperature of 110°C to obtain floating beads;

[0034] Step 3: 2:1 bismuth nitrate pentahydrate, potassium iodide, and polyvinylpyrrolidone are added to obtain the base liquid in the ethylene glycol reaction vessel with a molar ratio of 2:1, and the reaction vessel is placed on a multifunctional stirrer for the The base liquid is stirred, and after stirring, it is placed in ...

Embodiment 2

[0040] A kind of preparation method of floating bead loaded bismuth oxyiodide photocatalyst, comprises the following steps:

[0041] Step 1: Pour the fly ash into a beaker filled with distilled water, stir and let it stand, and sort out the floating beads floating on the water surface;

[0042] Step 2: Soak the sorted floating bead particles in 14% dilute nitric acid for 14 hours to remove impurities attached to the floating beads, rinse with distilled water for several times until the rinse solution is neutral, and then use filter paper Filter, and then dry with an electric blast drying oven at a drying temperature of 150°C to obtain floating beads;

[0043] Step 3: 2:1 bismuth nitrate pentahydrate, potassium iodide, and polyvinylpyrrolidone are added to obtain the base liquid in the ethylene glycol reaction vessel with a molar ratio of 2:1, and the reaction vessel is placed on a multifunctional stirrer for the The base liquid is stirred, and after stirring, it is placed in ...

Embodiment 3

[0049] A kind of preparation method of floating bead loaded bismuth oxyiodide photocatalyst, comprises the following steps:

[0050] Step 1: Pour the fly ash into a beaker filled with distilled water, stir and let it stand, and sort out the floating beads floating on the water surface;

[0051] Step 2: Soak the sorted floating bead particles in 12% dilute nitric acid for 12 hours to remove impurities attached to the floating beads, rinse with distilled water for several times until the rinse solution is neutral, and then use filter paper Filter, and then dry with an electric blast drying oven at a drying temperature of 115°C to obtain floating beads;

[0052] Step 3: Be that 2:1 bismuth nitrate pentahydrate, potassium iodide, and polyvinylpyrrolidone are added to obtain the base liquid in the ethylene glycol reaction vessel with a molar ratio of 2:1, and the reaction vessel is placed on a multifunctional stirrer for the The base liquid is stirred, and after stirring, it is plac...

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Abstract

The invention provides a preparation method of a floating bead loaded bismuth oxyiodide photocatalyst. The preparation method comprises the following steps: pouring coal ash into a beaker containing water, after stirring, standing and separating out floating bead particles floating on the water surface; and soaking the separated floating bead particles in dilute nitric acid; after 10-14 hours, filtering and drying to obtain floating beads; mixing bismuth nitrate pentahydrate, potassium iodide and polyvinylpyrrolidone into a reaction container containing ethylene glycol to obtain a substrate liquid, and stirring the base liquid; under the condition of continuous stirring, adding the floating beads and a pH adjusting liquid into the soluble substrate liquid to obtain an adherence liquid; andfiltering the adherence liquid to obtain the adhered floating beads; drying the adhered floating beads and carrying out heat preservation to obtain the concentrated floating beads; rinsing and filtering the concentrated floating beads, and drying to obtain a finished product. The preparation method of the floating bead loaded bismuth oxyiodide photocatalyst solves the problem that in the prior art, bismuth iodide particles are fine, and the separation process is relatively complicated.

Description

technical field [0001] The invention relates to the field of visible light photocatalysis, in particular to a method for preparing a bismuth oxyiodide photocatalyst supported by floating beads. Background technique [0002] Photocatalysis was discovered in 1967, when people were very interested in this new technology, but it was not until 1992 at the first international seminar on titanium dioxide photocatalyst (that is, photocatalysis) that Japanese research institutes proposed to use photocatalysis technology for the detection of pollutants. Research on photocatalysis applied to antibacterial, antifouling, air purification and other fields has increased dramatically. Among them, TiO2, the first discovered photocatalyst, has always been a hot spot in the field of photocatalysis research because of its high photostability and low price. Although TiO 2 Due to its stable chemical properties, non-toxic side effects, and low cost, it has become the most widely studied photocat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/06B01J35/10B01J35/04B01J32/00
CPCB01J27/06B01J35/56B01J35/60B01J35/39
Inventor 邓秋霞袁点
Owner 深圳市华世纪联合企业管理有限公司
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