A visible and near-infrared photoresponsive cqds-znin 2 the s 4 -Preparation method of biocl ternary heterojunction

A near-infrared light-responsive, heterojunction technology, used in catalyst activation/preparation, chemical instruments and methods, illumination water/sewage treatment, etc.

Active Publication Date: 2021-05-11
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far no ZnIn 2 S 4 Preparation and Photocatalytic Application of Heterojunction Composite with BiOCl

Method used

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  • A visible and near-infrared photoresponsive cqds-znin <sub>2</sub> the s <sub>4</sub> -Preparation method of biocl ternary heterojunction
  • A visible and near-infrared photoresponsive cqds-znin <sub>2</sub> the s <sub>4</sub> -Preparation method of biocl ternary heterojunction
  • A visible and near-infrared photoresponsive cqds-znin <sub>2</sub> the s <sub>4</sub> -Preparation method of biocl ternary heterojunction

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Experimental program
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preparation example Construction

[0032]Visible and near infrared light response CQDS-Znin2S4-Biocl three-dimensional heterojunction method, including the following steps:

[0033]1) Preparation Znin2S4catalyst of light

[0034]ZnCl2, INCL3· 4h2O and thioacetamide were dissolved in deionized water at a ratio of 1: 2: 6, stirred for 15-30 min, then transferred to the hydrothermal kettle at 200 ° C for 22-26 h. The powder after the reaction was washed three times with water and ethanol, and 100-150 rpm was centrifuged for 3-5 min, and the dried 10-18 hours in the blower drying tank, thereby gave Znin 2S4 monomer;

[0035]2) Preparation of CQDS photocatalysts

[0036]The two substances of hydrated citric acid and ethylenediamine were dissolved in deionized water in molar ratio of 1: 1, and stirred for 5-10 min, then the above suspension was transferred to 25 mL of hydrothermal kettle heated to 180 ° C, maintained 3 -6 h. The powder after the reaction was washed three times with water and ethanol, and 100-150 rpm was centrifuged fo...

Embodiment 1

[0043]Example 1: Preparation Znin2S4monomer.

[0044]136mg ZnCl2, 586mg of INCL3· 4h2O and 460 mg of thiionaceramide were added to 70 ml of deionized water, stirred for 30 minutes, then transferred to 100 ml of hydrothelips at 200 ° C for 24 h. The powder after the reaction was washed three times with water and ethanol, and the centrifugation was centrifuged for 5 min, and dried at 60 ° C in the blast drying tank to obtain Znin.2S4monomer.

Embodiment 2

[0045]Example 2: Preparation of CQDS photocatalysts.

[0046]1.05 mg of citric acid and 0.335 ml of diethylenediamine were dissolved at 15 ml of deionized water, stirred for 10 min, and then transferred to 25 ml of hydrothermal kettle to 180 ° C for 5 h. The powder after the reaction was washed three times with water and ethanol, 100 rpm centrifuged for 5 min, and dried at 60 ° C in the blower drying tank to obtain a CQDS monomer.

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Abstract

The invention discloses a visible and near-infrared photoresponse CQDs‑ZnIn 2 S 4 ‑The preparation method of BiOCl ternary heterojunction belongs to the technical field of semiconductor material preparation, comprising the following steps: 1) preparing ZnIn 2 S 4 Photocatalyst; 2) Preparation of CQDs photocatalyst; 3) Preparation of ZnIn 2 S 4 ‑BiOCl photocatalyst; 4) Preparation of CQDs‑ZnIn 2 S 4 ‑BiOCl photocatalyst. A visible and near-infrared photoresponsive CQDs‑ZnIn of the present invention 2 S 4 ‑BiOCl ternary heterojunction preparation method, using simple and fast method to prepare CQDs‑ZnIn 2 S 4 ‑BiOCl heterojunction exhibits excellent photocatalytic activity in the degradation of various antibiotics under visible and near-infrared light. The process of the invention is very simple, cheap and easy to obtain, low in cost and short in reaction time, thereby reducing energy consumption and reaction cost, convenient for mass production, non-toxic and harmless, and meeting the requirements of environmental friendliness.

Description

Technical field[0001]The present invention belongs to the technical field of semiconductor materials, and specific to a visible and near infrared light response CQDS-ZNIN2S4- BiOCL three-dimensional heterojunction method.Background technique[0002]Photocatalytic technology can directly convert solar energy into chemical energy and electrical energy through semiconductor photocatalytic materials, and can achieve full mineralization degradation of toxic and harmful organic pollutants in the environment, which is considered to be the most potential to solve human social energy and environmental problems. One of the technical solutions. We know that in the sun spectrum, ultraviolet light only accounts for only 5%, while the visible light and infrared ratio are as high as 95%. Therefore, the semiconductor photocatalyst of visible and near-infrared light response is developed in the actual application is a hot problem in the field of current photocatalytic research.[0003]BioCl is a new typ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/138B01J35/00B01J37/10C02F1/30C02F101/34C02F101/38
CPCB01J27/138B01J35/004B01J37/10C02F1/30C02F2101/34C02F2101/38
Inventor 陆光华江润仁杨皓涵章夏冬周冉冉
Owner HOHAI UNIV
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