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Preparation method of petal-shaped ZnIn2S4-loaded bismuth oxide composite visible light catalytic material and product prepared by preparation method

A catalytic material, znin2s4 technology, applied in the field of photocatalytic materials, can solve the problems of poor light response, limited photocatalytic ability, and high photo-generated charge recombination rate

Active Publication Date: 2021-09-07
JINGDEZHEN CERAMIC INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, single-phase bismuth oxide has a high recombination rate of photogenerated charges and poor response to visible light, which limits its photocatalytic ability.

Method used

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  • Preparation method of petal-shaped ZnIn2S4-loaded bismuth oxide composite visible light catalytic material and product prepared by preparation method
  • Preparation method of petal-shaped ZnIn2S4-loaded bismuth oxide composite visible light catalytic material and product prepared by preparation method
  • Preparation method of petal-shaped ZnIn2S4-loaded bismuth oxide composite visible light catalytic material and product prepared by preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of load petal shape ZnIn of this embodiment 2 S 4 The preparation method of bismuth oxide composite visible light catalytic material, its steps are as follows:

[0026] (1) Synthesis of Bi with Bi-MOF as precursor 2 o 3

[0027] (1-1) 0.45gBi(NO 3 ) 3 ·5H 2 O and 2.25g trimesic acid (H 3 BTC) is dissolved in the DMF solution of 180mL methanol (according to the volume ratio DMF: methanol=4: 1), after magnetic stirring 30min, obtain mixed solution;

[0028] (1-2) Transfer the above mixed solution into a reaction kettle and react at 120°C for 24 hours. After the reaction product is cooled, wash it with DMF and methanol for 3 times, and then put it in a vacuum oven at 60°C. Dry for 10 hours to obtain a white Bi-MOF precursor;

[0029] (1-3) Put the above-mentioned Bi-MOF precursor in a muffle furnace, and calcinate it at 500°C for 2 hours in an air atmosphere to obtain light yellow Bi 2 o 3 product;

[0030] (2)ZnIn 2 S 4 preparation of

[0031] (2-1) ...

Embodiment 2

[0036] A kind of load petal shape ZnIn of this embodiment 2 S 4 The preparation method of bismuth oxide composite visible light catalytic material, its steps are as follows:

[0037] (1) Synthesis of Bi with Bi-MOF as precursor 2 o 3

[0038] (1-1) 0.45gBi(NO 3 ) 3 ·5H 2 O and 2.25g trimesic acid (H 3 BTC) is dissolved in the DMF solution of 180mL methanol (according to the volume ratio DMF: methanol=4: 1), after magnetic stirring 30min, obtain mixed solution;

[0039] (1-2) Transfer the above mixed solution into a reaction kettle and react at 130°C for 20 hours. After the reaction product is cooled, wash it with DMF and methanol for 3 times, and then put it in a vacuum oven at 60°C. Dry for 10 hours to obtain a white Bi-MOF precursor;

[0040] (1-3) Put the above-mentioned Bi-MOF precursor in a muffle furnace and calcinate it at 520°C for 2 hours in an air atmosphere to obtain light yellow Bi 2 o 3 product;

[0041] (2)ZnIn 2 S 4 preparation of

[0042] (2-1) Dis...

Embodiment 3

[0047] A kind of load petal shape ZnIn of this embodiment 2 S 4 The preparation method of bismuth oxide composite visible light catalytic material, its steps are as follows:

[0048] (1) Synthesis of Bi with Bi-MOF as precursor 2 o 3

[0049] (1-1) 0.45gBi(NO 3 ) 3 ·5H 2 O and 2.25g trimesic acid (H 3 BTC) is dissolved in the DMF solution of 180mL methanol (according to the volume ratio DMF: methanol=4: 1), after magnetic stirring 30min, obtain mixed solution;

[0050] (1-2) Transfer the above mixed solution into a reaction kettle and react at 140°C for 12 hours. After the reaction product is cooled, it is washed with DMF and methanol for 3 times, and then placed in a vacuum oven at 60°C. Dry for 10 hours to obtain a white Bi-MOF precursor;

[0051] (1-3) Put the above-mentioned Bi-MOF precursor in a muffle furnace, and calcinate it at 550°C for 2 hours in an air atmosphere to obtain light yellow Bi 2 o 3 product;

[0052] (2)ZnIn 2 S 4 preparation of

[0053] (...

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Abstract

The invention discloses a preparation method of a petal-shaped ZnIn2S4-loaded bismuth oxide composite visible light catalytic material, which comprises the following steps: synthesizing Bi2O3 by taking Bi-MOF as a precursor, and synthesizing ZnIn2S4 by adopting a hydrothermal method; and then taking Bi2O3 and ZnIn2S4 as raw materials, and synthesizing by adopting a hydrothermal method to obtain the petal-shaped ZnIn2S4 loaded bismuth oxide composite visible light catalytic material. In addition, the invention also discloses a product prepared by the preparation method. The prepared bismuth oxide composite visible light catalytic material is of a rod-shaped structure, ZnIn2S4 of a petal-shaped structure is evenly dispersed on the surface of the rod-shaped bismuth oxide structure, the specific surface area of the material is effectively increased, more active sites are exposed, and therefore the bismuth oxide composite visible light catalytic material has the excellent hydrogen production performance, can rapidly and efficiently conduct photolysis on water to produce hydrogen, and has the wide application prospect. And reliable theoretical and practical support is provided for practical application.

Description

technical field [0001] The invention relates to the technical field of photocatalytic materials, in particular to a method for preparing a supported bismuth oxide composite visible photocatalytic material and a product thereof. Background technique [0002] With the increasingly serious energy and environmental problems, the development of clean and renewable energy has become particularly important. Among them, photocatalytic water splitting of high-value hydrogen has good development prospects, but it is also facing challenges, mainly in how to develop efficient photocatalysts to split water under visible light. Photocatalytic materials can be roughly divided into seven categories, namely metal oxides, metal sulfides, Bi-based photocatalysts, Ag-based photocatalysts, g-C 3 N 4 , elemental semiconductor catalysts and other photocatalytic materials. Among them, Bi-based photocatalysts have attracted extensive attention due to their properties such as non-toxic and harmles...

Claims

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Application Information

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IPC IPC(8): B01J27/04B01J23/18B01J37/08B01J37/20C01B3/04
CPCB01J27/04B01J23/18B01J37/086B01J37/20C01B3/042B01J35/23B01J35/39Y02E60/36
Inventor 廖润华任婉璐肖林锋
Owner JINGDEZHEN CERAMIC INSTITUTE
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