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Halogen bismuth oxide/titanium carbide photocatalysis composite material and preparing method thereof

A composite material, bismuth oxyhalide technology, applied in the field of photocatalytic materials, to achieve excellent photocatalytic activity, convenient operation and low cost

Pending Publication Date: 2019-07-30
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, based on Ti 3 C 2 and BiOCl x I 1-x Construction of BiOCl x I 1-x / Ti 3 C 2 Photocatalytic composite materials, using their synergistic coupling effect, can not only expand the absorption range of light, but also improve the separation efficiency of photogenerated charges, and obtain high-efficiency photocatalytic composite materials. However, there are few reports based on this aspect.

Method used

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  • Halogen bismuth oxide/titanium carbide photocatalysis composite material and preparing method thereof
  • Halogen bismuth oxide/titanium carbide photocatalysis composite material and preparing method thereof
  • Halogen bismuth oxide/titanium carbide photocatalysis composite material and preparing method thereof

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Experimental program
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Effect test

Embodiment 1

[0024] 1) Preparation of photocatalyst

[0025] 1g Ti 3 AlC 2 Slowly added to 20mL of 40% HF solution, stirred at a constant temperature of 60°C for 48 hours, washed and dried to obtain Ti 3 C 2 Material. Subsequently, 1 g of the acid-etched Ti 3 C 2 material, slowly added to 5ml dimethyl sulfoxide solution, ultrasonically dispersed for 24 hours, left to stand, washed, centrifuged, and dried to obtain ultra-thin two-dimensional Ti 3 C 2 Material.

[0026] 4mmol Bi(NO 3 )·5H 2 O with 6.12 mg Ti 3 C 2 Add it into 40mL of ethylene glycol, and ultrasonically disperse for 15 minutes to obtain A solution. Add 2mmol KI and 2mmol KCl into 40mL ethylene glycol, and ultrasonically disperse for 15 minutes to obtain B solution. Subsequently, solution B was added dropwise to solution A, stirred for 60 minutes to form a uniformly dispersed mixed solution, transferred to an autoclave, and reacted at a constant temperature of 160°C for 24 hours, washed and dried to obtain BiOCl ...

Embodiment 2

[0034] 1) Preparation of photocatalyst

[0035] 2mmol Bi(NO 3 )·5H 2 O with 3.06 mg Ti 3 C 2 Add it into 40mL of ethylene glycol, and ultrasonically disperse for 15 minutes to obtain A solution. 0.5mmol KI and 0.5mmol KCl were added in 40mL ethylene glycol, and ultrasonically dispersed for 15 minutes to obtain B solution. Subsequently, solution B was added dropwise to solution A, stirred for 60 minutes to form a uniformly dispersed mixed solution, transferred to an autoclave, and reacted at a constant temperature of 180°C for 24 hours, washed and dried to obtain BiOCl 0.5 I 0.5 / Ti 3 C 2 composite material. In the absence of Ti 3 C 2 Under the condition of pure BiOCl 0.5 I 0.5 was synthesized in the same way.

[0036] 2) Photocatalysis experiment

[0037] The prepared above-mentioned photocatalyst (1g / L) is put into the Cr(VI) solution (50ml) that concentration is 60ppm, under magnetic stirring condition, after dark reaction 30 minutes, turn on xenon lamp light s...

Embodiment 3

[0040] 4mmol Bi(NO 3 )·5H 2 O with 6.12 mg Ti 3 C 2 Add it into 40mL of ethylene glycol, and ultrasonically disperse for 15 minutes to obtain A solution. 0.8mmol KI and 0.2mmol KCl were added in 40mL ethylene glycol, and ultrasonically dispersed for 15 minutes to obtain B solution. Subsequently, solution B was added dropwise to solution A, stirred for 60 minutes to form a uniformly dispersed mixed solution, transferred to an autoclave, and reacted at a constant temperature of 150°C for 24 hours, washed and dried to obtain BiOCl 0.2 I 0.8 / Ti 3 C 2 composite material.

[0041] Adopt the test method described in embodiment 2 to test the photocatalyst that this example makes under visible light irradiation to the degradative activity of antibiotic, reach 86% to the degradation rate of antibiotic.

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Abstract

The invention discloses a halogen bismuth oxide / titanium carbide photocatalysis composite material and a preparing method thereof. According to the photocatalysis composite material, Ti3C2 is distributed around flower-like microspheres of BiOClxI1-x, wherein Ti3C2 is of a two-dimensional layered structure, and BiOClxI1-x is of a flower-like microsphere structure formed by self-assembly of nanosheets. The BiOClxI1-x / Ti3C2 photocatalysis composite material can serve as a potential catalyst, carbon dioxide and heavy-metal ions are effectively reduced under irradiation of visible light, and organic benzene series, antibiotics and other organic pollutants are degraded. The preparing method is simple, convenient to operate, low in cost and suitable for industrial production.

Description

technical field [0001] The invention belongs to the field of photocatalytic materials, in particular to a bismuth oxyhalide / titanium carbide photocatalytic composite material and a preparation method thereof. Background technique [0002] Solving the problems of energy shortage and environmental pollution is an urgent need for my country to achieve sustainable development, improve people's quality of life and ensure national security. A new round of technological revolution and industrial transformation represented by emerging energy technologies is emerging and will continue to change the world's energy landscape. [0003] The total amount of solar energy is huge, widely distributed, without transportation and inexhaustible, it is the most important renewable clean energy. Solar semiconductor photocatalysis technology is recognized as one of the effective ways to solve environmental and energy problems at the same time. It has the advantages of low energy consumption, simp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/22B01J37/34B01J37/10A62D3/176A62D101/43A62D101/20
CPCB01J27/22B01J37/343B01J37/10A62D3/176A62D2101/20A62D2101/43B01J35/39
Inventor 刘心娟倪梦莹诸葛志豪陈泰强宫银燕李灿牛棱渊
Owner CHINA JILIANG UNIV
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