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C/ZnO/BiOI ternary composite photocatalytic material

A photocatalytic material and ternary composite technology, applied in the field of C/ZnO/BiOI ternary composite photocatalytic materials, can solve the problems of long preparation time, expensive raw materials, complicated and cumbersome process flow, etc.

Inactive Publication Date: 2021-05-28
HARBIN UNIV OF COMMERCE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0016] The purpose of the present invention is to solve the existing C / ZnO / BiOI photocatalytic material preparation method that the raw material price is expensive, the technological process is complex and cumbersome, the preparation time is long, the production efficiency is not suitable for mass production, and the photocatalytic activity of the photocatalyst is low. In order to solve the problem of poor quality, a preparation method of C / ZnO / BiOI ternary composite photocatalytic material is provided

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specific Embodiment approach 1

[0043] Specific embodiment one: the preparation method of a kind of C / ZnO / BiOI ternary composite photocatalytic material in this embodiment is carried out according to the following steps:

[0044] 1. Weigh 1.317g of zinc acetate and dissolve it in 30ml of deionized water, add 1g of glucose, and stir for 10min. Add 1 g of polyethylene glycol, stir well, add 0.2M NaOH (60 ml) to adjust the pH to 12, and stir for 30 min. Transfer to a 150ml reactor and react at 180°C for 3h. After cooling to room temperature, wash with 100ml deionized water and 100ml ethanol, and centrifuge. Dry at 70°C. Calcined at 300°C for 3h. Obtain ZnO / C photocatalytic material.

[0045] 2. Add 20mL ethylene glycol, 0.97gBi(NO 3 ) 3 ·5H 2 O and 0.332g KI, stirred and dissolved to form a homogeneous solution; under vigorous stirring, slowly drop 20mL distilled water, and continue to stir for 1h, then filter under reduced pressure; use distilled water to wash the precipitate 2 to 3 times, and dry at 60°...

specific Embodiment approach 2

[0049] 1. Weigh 1.317g of zinc acetate and dissolve it in 30ml of deionized water, add 1.025g of glucose, and stir for 10min. Add 2 g of polyethylene glycol, stir evenly, add 0.2M NaOH (80 ml) to adjust the pH to 12, and stir for 30 min. Transfer to a 150ml reactor and react at 160°C for 2.5h. After cooling to room temperature, wash with 100ml deionized water and 100ml ethanol, and centrifuge. Dry at 70°C. Calcined at 350°C for 3.5h. Obtain C / ZnO photocatalytic material.

[0050] 2. Add 20mL ethylene glycol, 0.97gBi(NO 3 ) 3 ·5H 2 O and 0.332g KI, stirred and dissolved to form a homogeneous solution; under vigorous stirring, slowly drop 20mL distilled water, and continue to stir for 1h, then filter under reduced pressure; use distilled water to wash the precipitate 2 to 3 times, and dry at 60°C to obtain BiOI photocatalytic Material.

[0051]3. Weigh 0.8g C / ZnO and dissolve in 20ml deionized water, dissolve 0.27g BiOI in 20ml deionized water, stir vigorously for 40min, ...

specific Embodiment approach 3

[0054] 1. Weigh 1.317g of zinc acetate and dissolve it in 30ml of deionized water, add 1.025g of glucose, and stir for 10min. Add 1 g of polyethylene glycol, stir well, add 0.2M NaOH (80 ml) to adjust the pH to 12, and stir for 30 min. Transfer to a 150ml reactor and react at 170°C for 2.5h. After cooling to room temperature, wash with 100ml deionized water and 100ml ethanol, and centrifuge. Dry at 70°C. Calcined at 250°C for 3.5h. Obtain C / ZnO photocatalytic material.

[0055] 2. Add 20mL ethylene glycol, 0.97gBi(NO 3 ) 3 ·5H 2 O and 0.332g KI, stirred and dissolved to form a homogeneous solution; under vigorous stirring, slowly drop 20mL distilled water, and continue to stir for 1h, then filter under reduced pressure; use distilled water to wash the precipitate 2 to 3 times, and dry at 60°C to obtain BiOI photocatalytic Material.

[0056] 3. Weigh 0.8g C / ZnO and dissolve in 20ml deionized water, dissolve 0.12g BiOI in 20ml deionized water, stir vigorously for 40min, a...

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Abstract

The invention discloses a C / ZnO / BiOI ternary composite photocatalytic material. The preparation method of the material comprises the following steps: 1) weighing a certain amount of zinc acetate in 30mL of distilled water, adding a certain amount of glucose, conducting stirring for 10min, adding a certain amount of polyethylene glycol, adjusting the pH value by using NaOH with a specific concentration, conducting stirring for 30min, carrying out a hydrothermal reaction, conducting cooling, conducting washing with deionized water and ethanol, conducting centrifuging and drying, and conducting calcining in a muffle furnace at a certain temperature for a certain time to obtain a ZnO / C photocatalytic material; 2) taking a certain amount of Bi(NO3)3.5H2O and KI, adding the Bi(NO3)3.5H2O and KI into 20ml of ethanol, slowly adding 20ml of distilled water under vigorous stirring, continuously conducting stirring for a certain time, conducting filtering under reduced pressure, washing the precipitate with distilled water, and conducting drying at a specific temperature to obtain a BiOI photocatalytic material; and 3) respectively dissolving a certain amount of C / ZnO and BiOI in 20ml of deionized water, violently conducting stirring for a certain time, dropwise adding the C / ZnO solution into BiOI, carrying out ultrasonic treatment for a certain time, conducting centrifuging, and conducting drying at a certain temperature to obtain the C / ZnO / BiOI photocatalytic material. The synthesis method is simple in process, simple and convenient to operate and free of secondary pollution. The synthesized photocatalytic material has the characteristics of uniform morphology, excellent performance and the like. The invention belongs to the field of photocatalytic materials.

Description

technical field [0001] The invention relates to a C / ZnO / BiOI ternary composite photocatalytic material. Background technique [0002] ZnO is a Ⅱ-Ⅵ cluster semiconductor oxide with a band gap of 3.37eV at room temperature. It belongs to the direct band gap semiconductor material and has good electrical, mechanical and optical properties. ZnO is widely used in photocatalytic oxidation technology and has attracted much attention due to its low cost, biocompatibility and chemical stability. However, ZnO has a wide band gap and can only be used to stimulate photocatalytic oxidation reactions by ultraviolet light, and the utilization rate of sunlight is only 4%. As a photocatalytic material, ZnO also has the problem of fast electron-hole pair recombination rate. The disadvantages of not being able to absorb the visible part of the solar spectrum, and the slow degradation at the interface of the semiconductor liquid limit its application. In order to solve these defects of ZnO, a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/138C02F1/30C02F1/32C02F101/30C02F101/38
CPCB01J27/138C02F1/32C02F1/30C02F2101/38C02F2101/40C02F2101/30C02F2305/10B01J35/39
Inventor 谭冲李俊生刘蕊夏至左金龙
Owner HARBIN UNIV OF COMMERCE
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