BiOCl nanoring and synthetic method thereof

A synthesis method and nanoring technology, applied in the fields of nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of difficulty in the synthesis of nanorings, no reports of BiOCl ring nanosheets, etc., and achieve high scientific research value and morphology. Regular, simple steps

Active Publication Date: 2018-09-07
ANHUI NORMAL UNIV
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Problems solved by technology

However, due to the forward growth of the nanosheets during the synthesis process, the synthesis of

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  • BiOCl nanoring and synthetic method thereof
  • BiOCl nanoring and synthetic method thereof
  • BiOCl nanoring and synthetic method thereof

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[0024] The invention provides a kind of synthetic method of BiOCl nano ring, described synthetic method comprises the following steps: (1) will contain Bi 3+ , Cl - Carry out heating reaction with the aqueous solution of polyethylene glycol, obtain BiOCl nano sheet; (2) BiOCl nano sheet is etched in acid solution; Wherein, provide Cl - The substance is an alkali metal chloride salt; wherein, the acid solution is a nitric acid solution, a sulfuric acid solution or a mixed solution of nitric acid and sulfuric acid.

[0025] Through the above technical scheme, the present invention can obtain BiOCl nanosheets with center defects in step (1), and through step (2), the defects in the center of BiOCl nanosheets continue to expand and penetrate to obtain BiOCl nanorings. The BiOCl nano ring obtained by the invention not only fills the gap in the synthesis of the BiOCl nano ring, but also has higher photocatalytic activity than the conventional BiOCl nano sheet without holes in the c...

Embodiment 1

[0047] 1mmol Bi(NO 3 ) 3 ·5H 2 O was sonicated into 15 mL of distilled water, labeled as A solution. 1mmol KCl was added to 15mL distilled water, after ultrasonic dissolution, 0.1g polyethylene glycol (PEG-6000) was added, ultrasonically dispersed, and marked as B solution. Solution B was added dropwise to solution A, and the mixed solution was stirred for 30 minutes. Finally transferred to a 40mL autoclave and heated at 160°C for 12 hours. After the reaction, it was naturally cooled to room temperature, the product was washed with distilled water and ethanol, and dried to constant weight. The product was marked as BiOCl-S.

[0048] Weigh 0.03 g of the above synthesized product and ultrasonically disperse it into 15 mL of 1mol L -1 HNO 3 In the solution, stirring was continued for 6 h to obtain the final product, which was labeled as BiOCl-R.

Embodiment 2

[0050] (1) Dissolve bismuth nitrate, sodium chloride and polyethylene glycol (number average molecular weight is 3350) in water, will contain Bi 3+ , Cl - and an aqueous solution of polyethylene glycol were heated at 140°C for 15 hours to obtain BiOCl nanosheets; Bi in aqueous solution 3+ The concentration is 20mmol / L, Bi in aqueous solution 3+ and Cl - The ratio of the amount of substance is 1:0.8; relative to 1mmol of Bi 3+ , the mass content of polyethylene glycol is 0.05g;

[0051] The product after the heating reaction in step (1) is cooled, washed with distilled water and ethanol several times and dried;

[0052] (2) The BiOCl nanosheets were ultrasonically dispersed in a 0.8 mol / L nitric acid solution, stirred continuously, and etched for 3 hours; the amount of nitric acid solution used was 100 mL relative to 1 g of BiOCl nanosheets.

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Abstract

The invention belongs to the field of nanometer materials, and specifically discloses a BiOCl nanoring and a synthetic method thereof. The synthetic method comprises the following steps: (1) subjecting an aqueous solution containing Bi3+, Cl- and polyethylene glycol to a reaction under heating so as to obtain a BiOCl nanosheet; and (2) etching the BiOCl nanosheet in an acid fluid. The synthetic method provided by the invention can obtain the BiOCl nanoring, and fills the blank of synthesis of the BiOCl nanoring; meanwhile, the BiOCl nanoring obtained by using the synthetic method provided by the invention has higher photocatalytic activity compared with a conventional BiOCl nanoring with a non-porous center. Moreover, the synthetic method provided by the invention has simple steps and is easy to control; and the BiOCl nanoring obtained by using the synthetic method provided by the invention has regular morphology, high scientific research values and high photocatalytic application values.

Description

technical field [0001] The invention relates to nanomaterials, in particular to a BiOCl nanoring and a synthesis method thereof. Background technique [0002] Fossil fuels are indispensable in every aspect of our life, and the non-renewable and dwindling reserves have caused an energy crisis, and their consumption is accompanied by serious environmental pollution. At present, semiconductor photocatalysis technology is considered to be a more promising technology to solve these two problems. [0003] In recent years, the controllable synthesis of new BiOCl morphology and its photocatalytic activity have attracted great interest. The main reason is that BiOCl is an important semiconductor photocatalytic material in bismuth-based compounds. 2 o 2 ] 2+ and double [Cl] - The ionic layers are alternately arranged along the c-axis to form a unique layered structure, which can be obtained in [Bi 2 o 2 ] 2+ layer and [Cl] - The formation of an internal electric field between ...

Claims

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Application Information

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IPC IPC(8): C01G29/00B82Y30/00B01J27/06
CPCB01J27/06B01J35/004B82Y30/00C01G29/00C01P2004/03
Inventor 彭银毛艳鸽阚鹏飞
Owner ANHUI NORMAL UNIV
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