Preparation and application of BiOCl-(001)/GO nano-composite photocatalyst

A photocatalyst and nanocomposite technology, applied in the direction of physical/chemical process catalysts, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of weakening the magnetic field potential difference of nanocrystals, unfavorable electron-hole separation, etc., and achieve good Catalytic effect, simple preparation method, high catalytic efficiency

Active Publication Date: 2016-05-11
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the aggregation of electrons will weaken the magnetic field inside the nanocrystal and the potential difference between different crystal planes, which is not conducive to the separation of electrons and holes. Therefore, there is a limit to improving the photocatalytic activity of BiOCl only by relying on crystal surface engineering technology. of

Method used

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  • Preparation and application of BiOCl-(001)/GO nano-composite photocatalyst
  • Preparation and application of BiOCl-(001)/GO nano-composite photocatalyst
  • Preparation and application of BiOCl-(001)/GO nano-composite photocatalyst

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Effect test

Embodiment 1

[0028] The specific preparation steps of 1#BiOCl-(001) are as follows:

[0029] Use Bi(NO 3 ) 3 ·5H 2 O configured as 0.5mol / LBi(NO 3 ) 3 Solution standby: measure 100mLH at room temperature 2 O, add 20 mL of 65% HNO 3 , Weigh 0.06molBi(NO 3 ) 3 ·5H 2 O, stir it with a glass rod to dissolve it completely, and get 0.5mol / LBi(NO 3 ) 3 solution.

[0030] Weigh 116mg of NaCl and 100mg of sodium oleate (NaOA) into a round bottom flask, add 30mL of deionized water, stir well to fully dissolve NaOA and NaCl, slowly add 2mL of 0.5mol / LBi(NO 3 ) 3 , and reacted at 95° C. for three hours, washed the obtained white precipitate several times with absolute ethanol and dried to obtain 1# BiOCl-(001) single crystal nanosheet.

Embodiment 2

[0032] The specific preparation steps of 2#BiOCl-(001) are as follows:

[0033] Weigh 116mgNaCl and 0mgNaOA into a round-bottomed flask, add 30mL of deionized water, stir well to fully dissolve NaCl, and slowly add 2mL of 0.5mol / LBi(NO 3 ) 3 , and reacted at 95° C. for three hours, washed the obtained white precipitate several times with absolute ethanol and dried to obtain 2#BiOCl-(001) single crystal nanosheets.

Embodiment 3

[0035] The specific preparation steps of 3#BiOCl-(001) are as follows:

[0036] Weigh 116mgNaCl and 200mgNaOA into a round-bottomed flask, add 30mL of deionized water, stir well to fully dissolve NaCl, and slowly add 2mL of 0.5mol / LBi(NO 3 ) 3 , and reacted at 95° C. for three hours, washed the obtained white precipitate several times with absolute ethanol and dried to obtain 3#BiOCl-(001) single crystal nanosheets.

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Abstract

The invention discloses preparation and application of a BiOCl-(001) / GO nano-composite photocatalyst and belongs to the field of photocatalysts. The active component of the composite photocatalyst is BiOCl-(001) / GO. The BiOCl-(001) / GO composite photocatalyst is characterized in that the crystal surface engineering technology and an electronic extracting effect are combined, GO and a BiOCl monocrystal nano-piece of an exposure face (001) are recombined, and the BiOCl-(001) / GO nano-composite photocatalyst is prepared. The preparation method comprises the steps that NaCl and sodium oleate are put into a round-bottom flask, deionized water is added, sufficient stirring is conducted to enable sodium oleate and NaCl to be dissolved fully, graphene is added, constant-temperature stirring is conducted, Bi(NO3)3 is added slowly, cooling, washing and drying are conducted after a reaction is carried out for a certain time, and then the target product is obtained. The prepared nano-composite photocatalyst can be applied to a reaction of degrading methyl orange, and a good catalytic effect and stability are achieved.

Description

technical field [0001] The invention belongs to the field of photocatalysts, in particular to a preparation technology for a composite photocatalyst containing bismuth oxychloride (BiOCl) and graphene (GO), in particular to a BiOCl single crystal nanosheet containing GO and an exposed (001) surface ( BiOCl-(001)) composite photocatalyst BiOCl-(001) / GO preparation technology. The present invention combines the crystal surface engineering technology and the electron extraction effect to prepare the nanocomposite photocatalyst BiOCl-(001) / GO, which is used for photodegradation of methyl orange (MO) and achieves good catalytic effect. Background technique [0002] Environmental issues and energy issues are two major challenges facing the sustainable development of mankind in the 21st century. Semiconductor photocatalysis technology that can utilize clean solar energy resources has become one of the important means to deal with these two challenges (H.Wang, et al.Semiconductorhe...

Claims

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Application Information

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IPC IPC(8): B01J27/06C02F1/30C02F1/28
CPCC02F1/281C02F1/30B01J27/06C02F2305/10B01J35/23B01J35/39
Inventor 陈国昌王海波乔红斌叶明富裘小宁蒋伟峰
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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