An eggshell-shaped porous bi 4 o 5 br 2 Preparation methods of nanomaterials

A nanomaterial, bi4o5br2 technology, applied in the direction of bromine oxycompound and other directions, can solve the problem of lack of photocatalyst research, and achieve the effects of simple operation, easy availability of raw materials and high product yield.

Inactive Publication Date: 2017-07-21
HEFEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As far as the literature survey is concerned, the pure-phase semiconductor Bi 4 o 5 Br 2 The research on photocatalysts is still quite scarce. Therefore, the development of a simple and efficient controllable preparation of pure-phase ternary oxygen-rich compounds Bi with unique morphological structure 4 o 5 Br 2 Semiconductor photocatalysts are still a challenging task

Method used

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  • An eggshell-shaped porous bi <sub>4</sub> o <sub>5</sub> br <sub>2</sub> Preparation methods of nanomaterials
  • An eggshell-shaped porous bi <sub>4</sub> o <sub>5</sub> br <sub>2</sub> Preparation methods of nanomaterials
  • An eggshell-shaped porous bi <sub>4</sub> o <sub>5</sub> br <sub>2</sub> Preparation methods of nanomaterials

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Effect test

Embodiment 1

[0024] Eggshell-shaped porous Bi of the present invention 4 o 5 Br 2 Nanomaterials are prepared by two-step processes of sonochemical technology and heat treatment. The specific process steps are as follows:

[0025] S1 weighs 1.940g bismuth nitrate Bi(NO 3 ) 3 ·5H 2 O was stirred and hydrolyzed into Sol A with 10mL deionized water;

[0026] S2 weighs 0.2001g cetyltrimethylammonium bromide (CTAB) and prepares solution B with 20mL deionized water, and the molar ratio of bismuth nitrate pentahydrate and CTAB is 1:1.375;

[0027] S3 weighs again 0.7612g thiourea (Tu) and prepares solution C with 30mL deionized water;

[0028] S4 While stirring, add solution B to sol A in turn, then add solution C to the mixed reaction solution of A and B, and continue stirring for 10 minutes;

[0029]S5 Transfer the mixed reaction solution to a 100mL glass bottle with a blue cap, place it in an ultrasonic cleaner filled with tap water, the temperature of the ultrasonic bath is 80°C, and th...

Embodiment 2

[0036] Eggshell-shaped porous Bi of the present invention 4 o 5 Br 2 Nanomaterials are prepared by two-step processes of sonochemical technology and heat treatment. The specific process steps are as follows:

[0037] S1 weighs 1.940g bismuth nitrate Bi(NO 3 ) 3 ·5H 2 O was stirred and hydrolyzed into Sol A with 10mL deionized water;

[0038] S2 Weigh 0.1455g cetyltrimethylammonium bromide (CTAB) and prepare solution B with 20mL deionized water, the molar ratio of bismuth nitrate pentahydrate and CTAB is 1:1;

[0039] S3 weighs again 0.7610g thiourea (Tu) and prepares solution C with 30mL deionized water;

[0040] S4 While stirring, add solution B to sol A in turn, then add solution C to the mixed reaction solution of A and B, and continue stirring for 10 minutes;

[0041] S5 Transfer the mixed reaction solution to a 100mL glass bottle with a blue cap, place it in an ultrasonic cleaner filled with tap water, the temperature of the ultrasonic bath is 60°C, and the ultraso...

Embodiment 3

[0045] Eggshell-shaped porous Bi of the present invention 4 o 5 Br 2 Nanomaterials are prepared by two-step processes of sonochemical technology and heat treatment. The specific process steps are as follows:

[0046] S1 weighs 1.942g bismuth nitrate Bi(NO 3 ) 3 ·5H 2 O was stirred and hydrolyzed into Sol A with 10mL deionized water;

[0047] S2 Weigh 0.2910g cetyltrimethylammonium bromide (CTAB) and prepare solution B with 20mL deionized water, the molar ratio of bismuth nitrate pentahydrate and CTAB is 1:2;

[0048] S3 weighs again 0.7612g thiourea (Tu) and prepares solution C with 30mL deionized water;

[0049] S4 While stirring, add solution B to sol A in turn, then add solution C to the mixed reaction solution of A and B, and continue stirring for 10 minutes;

[0050] S5 Transfer the mixed reaction solution to a 100mL glass bottle with a blue cap, place it in an ultrasonic cleaner filled with tap water, the temperature of the ultrasonic bath is 90°C, and the ultraso...

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Abstract

The invention discloses an eggshell-shaped porous Bi 4 o 5 Br 2 Preparation methods of nanomaterials. The present invention adopts sonochemical technology and heat treatment two-step process to prepare eggshell-shaped porous Bi 4 o 5 Br 2 nanomaterials. First, soluble bismuth salt, cetyltrimethylammonium bromide and deionized water are used as raw materials, and the precursor compound is prepared by "one pot" ultrasonic chemical reaction after fully stirring and dissolving; then the precursor compound is annealed Heat treatment, thus producing eggshell-like porous Bi 4 o 5 Br 2 nanomaterials. Eggshell-shaped porous Bi of the present invention 4 o 5 Br 2 Nanomaterials have a hollow hierarchical structure, similar to eggshells, without agglomeration, and good dispersion. The diameter of the open end is between 500 and 800nm, and the thickness of the shell is about 20nm. There are a large number of pores on the surface, and the specific surface area is large. The invention does not use an organic solvent, and the process is clean and friendly; the prepared nanometer material can be used in the fields of visible light catalysis, antibacterial and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic functional materials, in particular, relates to an eggshell-shaped porous Bi 4 o 5 Br 2 Preparation methods of nanomaterials. Background technique [0002] Due to their unique functions and properties, nanomaterials play an important role in many fields such as nano optics, electricity, and magnetism. The morphological structure and particle size of nanomaterials are closely related to their physical and chemical properties. Micro-nano materials with unique morphological structures usually show superior physical and chemical properties, and are increasingly valued by people. Hierarchical hollow micro-nanostructured materials have always been one of the hotspots in nanomaterials science due to their large specific surface area, low density, excellent permeability, and unique photoelectric and surface properties. [0003] Ternary bismuth-based oxyhalides (Bi V o VI x VII , X=...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B11/20
Inventor 邓崇海高雅丁爱琴董强朱仁发
Owner HEFEI UNIV
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