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Method for preparing bismuthyl chloride nano-flower

A technology of bismuth oxychloride and nanoflowers, applied in chemical instruments and methods, inorganic chemistry, bismuth compounds and other directions, can solve the problems of low yield, low yield, difficult bismuth thin film, etc., and achieve high catalytic activity, high specific surface, Smooth-feeling effect

Inactive Publication Date: 2012-04-25
ANHUI UNIVERSITY
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

U.S. "Chemistry of Materials" (Chemistryof Materials, 2009, 21 volumes, 247-252 pages) has reported that chemical vapor deposition has synthesized bismuth oxychloride nanobelts, nanoflowers and nanosheets on a silicon substrate. Gold trichloride is used as a catalyst, which has high cost and low yield, and is not suitable for large-scale production
British "Nanotechnology" (Nanotechnology, 2009, 20 volumes, 275702 (7pp)) prepared a bismuth oxychloride flower-like structure in a mixed solution of hydrogen peroxide and hydrochloric acid with a metal bismuth film. The bismuth film in the early stage of this method is relatively difficult It needs radio frequency magnetron sputtering equipment, and the output of preparation is also small, so it is difficult to promote

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  • Method for preparing bismuthyl chloride nano-flower
  • Method for preparing bismuthyl chloride nano-flower
  • Method for preparing bismuthyl chloride nano-flower

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Embodiment 1

[0022] Embodiment 1: prepare bismuth oxychloride nanosheets with different wall thicknesses:

[0023] This step is a transitional stage for preparing the product bismuth oxychloride nanoflowers. (1) Dissolve 0.22 g of bismuth trichloride in 21 ml of water, stir for 30 minutes, transfer to a 25 ml autoclave with a polytetrafluoroethylene liner, and react at 180 degrees Celsius for 12 hours. (2) Dissolve 0.22 gram of bismuth trichloride in 14 milliliters of water and 7 milliliters of pyridine mixed solutions, after stirring for 30 minutes, transfer to 25 milliliters of autoclaves with polytetrafluoroethylene liners, and react at 180 degrees Celsius 12 hours. (3) Dissolve 0.22 gram of bismuth trichloride in 7 milliliters of water and 14 milliliters of pyridine mixed solutions, after stirring for 30 minutes, transfer to 25 milliliters of autoclaves with polytetrafluoroethylene liners, and react at 180 degrees Celsius 12 hours. The product obtained above was washed by centrifuga...

Embodiment 2

[0029] Embodiment 2: Preparation of bismuth oxychloride nanoflowers:

[0030] Dissolve 0.22 g of bismuth trichloride in 21 ml of pyridine, stir for 30 minutes, transfer to a 25 ml autoclave with a polytetrafluoroethylene liner, and react at 180 degrees Celsius for 12 hours. The obtained product was washed by centrifugation for three times and then dried for characterization and testing.

[0031] The phase of the sample was characterized by Philips X'Pert PRO SUPER X-ray diffractometer (XRD), the morphology of the sample was characterized by the field emission scanning electron microscope of German Zeiss Company, the simulated sunlight photocatalytic test system and Shimadzu-2550 The photocatalytic properties of the samples were tested, and the specific surface and micropore distribution of the samples were analyzed by the automatic microporous physical adsorption and chemical adsorption analyzer of Micromeritics Instrument Company of the United States.

[0032] Figure 4 , ...

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Abstract

The invention discloses a method for preparing a bismuthyl chloride nano-flower and belongs to the technical field of preparation of nano-materials. The method is characterized by comprising the following steps of: dissolving 0.22 grams of bismuth trichloride in 21 milliliters of pyridine; stirring the mixture for 30 minutes; transferring the mixture into a 25-milliliter high-pressure reaction kettle which is provided with a polytetrafluoroethylene liner; performing a reaction on the mixture at the temperature of 180 DEG C for 12 hours; centrifugally washing an obtained sample for three times; and drying the centrifugally-washed sample to obtain a product. The method does not need using an organic template or surfactant, and has the characteristics of one-step synthesis and high yield; bismuthyl chloride nano-sheets are thin and are spontaneously assembled into the nano-flower of a hierarchical structure in a synthetic process. The method has a simple and energy-saving preparation process and is suitable for industrial production. The obtained bismuthyl chloride nano-flower has the advantages of uniform particle size, large specific surface and high catalytic activity.

Description

Technical field: [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a method for preparing bismuth oxychloride nanoflowers—an efficient photocatalyst—by a solvothermal method. Background technique: [0002] The existing methods for preparing bismuth oxychloride nanostructure materials include microemulsion method, hydrothermal / solvothermal method, hydrolysis method, ultrasonic-assisted synthesis and chemical vapor deposition method, etc. [0003] The U.S. "Physical Chemistry Journal C" (The Journal of Physical Chemistry C, 2008, volume 112, pages 747-753) has reported that the solvothermal method using ethylene glycol as a solvent prepares bismuth oxychloride microspheres, microspheres The diameter is 1-3 microns, the structure is dense, and the specific surface is small. Holland Elsevier "Applied Catalysis B: Environment" (Applied Catalysis B: Environmental, 2006, volume 68, pages 125-129) reported the synthesis of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G29/00
Inventor 宋吉明张胜义牛和林毛昌杰沈玉华王腾
Owner ANHUI UNIVERSITY
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