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CdS quantum dot modified bismuth composite material as well as preparation method and application thereof

A technology of composite materials and quantum dots, which is applied in the field of CdS quantum dot modified bismuth-based composite materials and its preparation, can solve the problems of CdS quantum dot agglomeration and less active crystal faces, so as to promote separation, promote rapid separation, and broaden visible light Effect of Response Range

Active Publication Date: 2022-01-04
广西北投环保水务集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the CdS quantum dots prepared by the hydrothermal method are prone to agglomeration, resulting in fewer exposed active crystal faces.

Method used

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  • CdS quantum dot modified bismuth composite material as well as preparation method and application thereof
  • CdS quantum dot modified bismuth composite material as well as preparation method and application thereof
  • CdS quantum dot modified bismuth composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) BiOCl / Bi 2 MoO 6 Preparation of Nanospheres

[0034] Take Bi(NO 3 ) 3 ·5H 2 O (1mmol), Na 2 MoO 4 2H 2 O(2mmolNa 2 MoO 4 2H 2 O) and NaCl (1.75mmol) were added in 15 milliliters of ethylene glycol respectively, and ultrasonically dispersed for 60min;

[0035] The dispersed three groups of solutions were mixed together and ultrasonically treated for 10 min, and then placed in a microwave-assisted synthesizer to prepare BiOCl / Bi 2 MoO 6 ;

[0036] Finally, the product was collected, washed several times with deionized water and ethanol, and then dried at 60 °C for 12 h. The product was collected and labeled as 1.75-BOCl / BMO;

[0037] (2) BiOCl / Bi 2 MoO 6 / Preparation of CdS nanospheres

[0038] 114mg of CdCl 2 Add to 20ml (0.08mol / L) CTAB aqueous solution;

[0039] 38 mg of thioacetamide and 50 mg of 1.75-BOCl / BMO were added to another 20 ml portion of CTAB in water;

[0040] The two solutions were dispersed under ultrasonic conditions for 10 minutes...

Embodiment 2

[0042] (1) BiOCl / Bi 2 MoO 6 Preparation of Nanospheres

[0043] Take Bi(NO 3 ) 3 ·5H 2 O (1mmol), Na 2 MoO 4 2H 2 O(2mmolNa 2 MoO 4 2H 2 O) and NaCl (1.25mmol) were added in 15 milliliters of ethylene glycol respectively, and ultrasonically dispersed for 60min;

[0044] The dispersed three groups of solutions were mixed together and ultrasonically treated for 10 min, and then placed in a microwave-assisted synthesizer to prepare BiOCl / Bi 2 MoO 6 ;

[0045] Finally, the product was collected, washed several times with deionized water and ethanol, and then dried at 60 °C for 12 h. The product was collected and labeled as 1.25-BOCl / BMO;

[0046] (2) BiOCl / Bi 2 MoO 6 / Preparation of CdS nanospheres

[0047] 114mg of CdCl 2 Add to 20ml (0.05mol / L) CTAB aqueous solution;

[0048] Add 38mg of thioacetamide and 100mg of 1.25-BOCl / BMO to another 20ml (0.05mol / L) CTAB aqueous solution;

[0049] The two solutions were dispersed under ultrasonic conditions for 10 minut...

Embodiment 3

[0051] (1) BiOCl / Bi 2 MoO 6 Preparation of Nanospheres

[0052] Take 1mmol Bi(NO 3 ) 3 ·5H 2 O, 2 mmol Na 2 MoO 4 2H 2 Add O and 2mmol NaCl to 15ml of ethylene glycol respectively, and ultrasonically disperse for 60min;

[0053] The dispersed three groups of solutions were mixed together and ultrasonically treated for 10 min, and then placed in a microwave-assisted synthesizer to prepare BiOCl / Bi 2 MoO 6 ;

[0054] Finally, the product was collected, washed several times with deionized water and ethanol, and then dried at 60 °C for 12 h to collect the product and label it as 2-BOCl / BMO;

[0055] (2) BiOCl / Bi 2 MoO 6 / Preparation of CdS nanospheres

[0056] 114mg of CdCl 2 Add to 20ml (0.1mol / L) CTAB aqueous solution;

[0057] Add 38mg of thioacetamide and 150mg of 2-BOCl / BMO to another 20ml (0.1mol / L) CTAB aqueous solution;

[0058] The two solutions were dispersed under ultrasonic conditions for 10 minutes and then mixed, and then 1.5 ml of cyclohexane was ad...

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Abstract

The invention discloses a CdS quantum dot modified bismuth composite material as well as a preparation method and application thereof, and belongs to the technical field of visible light catalytic material research and environmental pollutant degradation. The preparation method comprises the following steps: firstly, preparing Bi2MoO6 / BiOCl nano microspheres from Bi(NO3)3.5H2O and Na2MoO4.2H2O by virtue of ultrasonic treatment, and then fixing CdS quantum dots on the surface of BiOCl / Bi2MoO6 so as to obtain a target product Bi2MoO6 / BiOCl / CdS composite material. The composite material is a double II-type heterojunction, and realizes rapid transfer of photo-induced electrons; and the composite material has photocatalytic degradation performance, and has good degradation performance on ciprofloxacin under visible light, and the degradation performance is obviously higher than that of independent BiOCl, Bi2MoO6 and CdS.

Description

technical field [0001] The invention belongs to the technical field of visible light catalytic material research and environmental pollutant treatment, and in particular relates to a CdS quantum dot modified bismuth composite material and its preparation method and application. Background technique [0002] Antibiotics are widely used in the treatment of human and animal infectious diseases, among which ciprofloxacin (CIP) belongs to the third generation of broad-spectrum fluoroquinolone antibiotics and is commonly used in the treatment of bacterial infections. However, studies have found that less than half of fluoroquinolones can be metabolized after entering the human body, and due to poor biodegradability, the discharged antibiotics cannot be completely degraded by urban sewage treatment plants. In addition, CIP will also produce various metabolites that are potentially harmful to the environment and even humans during the decomposition and transformation process. There...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/138B01J35/08C02F1/30C02F101/30C02F101/38
CPCB01J27/138C02F1/30C02F2101/30C02F2101/38C02F2305/10C02F2305/023B01J35/51B01J35/39
Inventor 冉琪蒋严波蒋建谊兰小威张龙吴思仪
Owner 广西北投环保水务集团有限公司
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