Iron (III)/bismuth molybdate having oxygen deficiency based composite photocatalytic material and preparation method of composite photocatalytic material

A technology of composite photocatalysis and photocatalytic materials, which is applied in the field of preparation of bismuth molybdate-based composite photocatalytic materials, can solve the problem of low visible light catalytic activity of bismuth molybdate, and achieve wide visible light response range, mild conditions, and improved catalytic activity Effect

Active Publication Date: 2018-11-30
YANAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The first object of the present invention is to provide an iron (III) / bismuth molybdate-based composite photocatalytic material with oxygen defects, which has good visible light response performance and can solve the problem of low visible light catalytic activity of bismuth molybdate

Method used

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  • Iron (III)/bismuth molybdate having oxygen deficiency based composite photocatalytic material and preparation method of composite photocatalytic material
  • Iron (III)/bismuth molybdate having oxygen deficiency based composite photocatalytic material and preparation method of composite photocatalytic material
  • Iron (III)/bismuth molybdate having oxygen deficiency based composite photocatalytic material and preparation method of composite photocatalytic material

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Embodiment 1

[0056] Preparation of iron (III) of the present invention / bismuth molybdate-based composite photocatalytic material with oxygen deficiency is specifically carried out according to the following steps:

[0057] Step 1, prepare the bismuth molybdate photocatalytic material with oxygen deficiency according to the following steps:

[0058] Step 1.1, first measure 1.3mmol of Bi(NO 3 ) 3 ·5H 2 O was dissolved in 13ml of ethylene glycol solution, and then 0.65mmol of Na was added to the ethylene glycol solution 2 MoO 4 2H 2 O, finally stir until a transparent solution is obtained;

[0059] Step 1.2, first add 32.5mL of absolute ethanol to the transparent solution obtained in step 1.1 and stir for 1 hour, then transfer it to the reaction kettle and seal it, and then put the reaction kettle into an electric heating constant temperature blast drying box, The reaction was carried out at 140°C for 10 hours to obtain a mixed solution A. After the reaction was completed, the mixed sol...

Embodiment 2

[0064] Preparation of iron (III) of the present invention / bismuth molybdate-based composite photocatalytic material with oxygen deficiency is specifically carried out according to the following steps:

[0065] Step 1, prepare the bismuth molybdate photocatalytic material with oxygen deficiency according to the following steps:

[0066] Step 1.1, first measure 1.3mmol of Bi(NO 3 ) 3 ·5H 2 O was dissolved in 13ml of ethylene glycol solution, and then 0.65mmol of Na was added to the ethylene glycol solution 2 MoO 4 2H 2 O, finally stir until a transparent solution is obtained;

[0067] Step 1.2, first add 32.5mL of absolute ethanol to the transparent solution obtained in step 1.1 and stir for 1 hour, then transfer it to the reaction kettle and seal it, and then put the reaction kettle into an electric heating constant temperature blast drying box, The reaction was carried out at 140°C for 10 hours to obtain a mixed solution A. After the reaction was completed, the mixed sol...

Embodiment 3

[0072] Preparation of iron (III) of the present invention / bismuth molybdate-based composite photocatalytic material with oxygen deficiency is specifically carried out according to the following steps:

[0073] Step 1, prepare the bismuth molybdate photocatalytic material with oxygen deficiency according to the following steps:

[0074] Step 1.1, first measure 1.3mmol of Bi(NO 3 ) 3 ·5H 2 O was dissolved in 13ml of ethylene glycol solution, and then 0.65mmol of Na was added to the ethylene glycol solution 2 MoO 4 2H 2 O, finally stir until a transparent solution is obtained;

[0075] Step 1.2, first add 32.5mL of absolute ethanol to the transparent solution obtained in step 1.1 and stir for 1 hour, then transfer it to the reaction kettle and seal it, and then put the reaction kettle into an electric heating constant temperature blast drying box, React at 160°C for 12 hours to obtain a mixed solution A. After the reaction is completed, the mixed solution A is naturally coo...

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Abstract

The invention discloses an iron (III) / bismuth molybdate having oxygen deficiency based composite photocatalytic material. The composite photocatalytic material is composed of iron (III) and a bismuthmolybdate photocatalytic material having the oxygen deficiency, wherein the iron (III) is grafted on the surface of the bismuth molybdate photocatalytic material having the oxygen deficiency, and a molar weight of the iron (III) is 5%-25% of a molar weight of the bismuth molybdate photocatalytic material having the oxygen deficiency. The invention also discloses a preparation method of the iron (III) / bismuth molybdate having the oxygen deficiency based composite photocatalytic material. The method comprises the following steps: firstly preparing the bismuth molybdate photocatalytic material having the oxygen deficiency; and grafting the iron (III) to the surface of the bismuth molybdate photocatalytic material having the oxygen deficiency obtained in the step 1 to prepare the iron (III) / bismuth molybdate having the oxygen deficiency based composite photocatalytic material. The iron (III) / bismuth molybdate having the oxygen deficiency based composite photocatalytic material disclosed bythe invention has no agglomeration, a wide visible-light response range, significantly-improved catalytic activity compared with bismuth molybdate, and good reusability; and the method has a simple preparation process, mild conditions and good controllability, and is convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of industrial catalysis, and in particular relates to an iron (III) / bismuth molybdate-based composite photocatalytic material with oxygen defects, and also relates to an iron (III) / bismuth molybdate-based composite photocatalytic material with oxygen defects. Preparation method of catalytic material. Background technique [0002] Bi 2 MoO 6 is the simplest structure of Aurivillius, by (Bi 2 o 2 ) 2+ layer and (MoO 4 ) 2- Layers are stacked alternately to form a layered composite oxide, Bi 2 MoO 6 The valence band is defined by Bi 6s and O 2p Orbital hybridization, the conduction band is Mo 3d Orbital formation, its forbidden band width is about 2.5-2.8eV, the maximum absorption wavelength is about 490nm, it can absorb part of visible light and be excited, therefore, Bi 2 MoO 6 The research and development of photocatalytic materials will provide new ideas for improving the utilization rate of su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/887
CPCB01J23/8876B01J35/004
Inventor 付峰申会东薛文文王丹军闫龙魏清波甄延忠高晓明郭莉
Owner YANAN UNIV
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