Ternary composite photocatalytic nanometer reactor as well as preparation method and application thereof

A nano-reactor and composite photocatalysis technology, applied in chemical instruments and methods, inorganic chemistry, silicon compounds, etc., can solve the problems of composite material photocatalytic activity to be improved, easy fall-off performance of ferroferric oxide, high synthesis cost, etc. Achieve good stability and photocatalytic activity, improve photocatalytic effect, and good light transmittance

Inactive Publication Date: 2017-04-26
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the above-mentioned reports, on the one hand, ferric iron tetroxide is easy to fall off, and its performance is unstable, and g-C 3 N 4 The synthesis cost of / Au / CdS is relatively high
On the other hand, the photocatalytic activity of the composite materials prepared above still needs to be improved.

Method used

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  • Ternary composite photocatalytic nanometer reactor as well as preparation method and application thereof
  • Ternary composite photocatalytic nanometer reactor as well as preparation method and application thereof
  • Ternary composite photocatalytic nanometer reactor as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Step 1. Preparation of g-C 3 N 4 Photocatalyst: Take 3g of purchased melamine and place it in a crucible, place it in a muffle furnace, and calcine it in an air atmosphere at 2.3°C min -1 Raise the temperature to 500°C at a constant temperature for 2 hours, continue to raise the temperature to 550°C at the same rate, and keep it at a constant temperature for 2 hours, cool naturally to room temperature and grind finely to obtain g-C 3 N 4 Photocatalyst, save for future use.

[0035] Step 2, prepare Fe 3 o 4 / g -C 3 N 4 : put g-C 3 N 4 Dispersed in ethylene glycol and sonicated to make g-C 3 N 4 suspension; the Fe(NO 3 ) 3 9H 2 O, PVP, PEG, and CH 3 COONa·3H 2 O dissolved in the above g-C respectively 3 N 4 in the suspension; continue to sonicate the above mixture until it is fully dissolved, then transfer the reaction mixture to a 50ml polytetrafluoroethylene reactor for constant temperature and heat reaction for a period of time; finally, the obtained p...

Embodiment 2

[0039] Step 1. Preparation of g-C 3 N 4 Photocatalyst: Take 6g of commercially available melamine and place it in a crucible, place it in a muffle furnace, and calcine it in an air atmosphere, raise the temperature to 500°C at a heating rate of 3°C / min, and keep it at a constant temperature for 2h. The heating rate continued to rise to 580 ° C, and kept at a constant temperature for 2 hours, cooled naturally to room temperature and ground to obtain g-C 3 N 4 Photocatalyst, save for future use.

[0040] Step 2, prepare Fe 3 o 4 / g -C 3 N 4 : put g-C 3 N 4 Dispersed in ethylene glycol and sonicated to make g-C 3 N 4 suspension; the Fe(NO 3 ) 3 9H 2 O, PVP, PEG, and CH 3 COONa·3H 2 O dissolved in the above g-C respectively 3 N 4 in the suspension; continue to sonicate the above mixture until it is fully dissolved, then transfer the reaction mixture to a 50ml polytetrafluoroethylene reactor for constant temperature and heat reaction for a period of time; finally, ...

Embodiment 3

[0044] Step 1. Preparation of g-C 3 N 4 Photocatalyst: Take 8g of commercially available melamine and place it in a crucible, place it in a muffle furnace, and calcine it in an air atmosphere, raise the temperature to 500°C at a heating rate of 4°C / min, and keep it at a constant temperature for 2h. The heating rate continued to rise to 600°C, and kept at a constant temperature for 2 hours, cooled naturally to room temperature and ground to obtain g-C 3 N 4 Photocatalyst, save for future use.

[0045] Step 2, prepare Fe 3 o 4 / g -C 3 N 4 : put g-C 3 N 4 Dispersed in ethylene glycol and sonicated to make g-C 3 N 4 suspension; the Fe(NO 3 ) 3 9H 2 O, PVP, PEG, and CH 3 COONa·3H 2 O dissolved in the above g-C respectively 3 N 4 in the suspension; continue to sonicate the above mixture until it is fully dissolved, then transfer the reaction mixture to a 50ml polytetrafluoroethylene reactor for constant temperature and heat reaction for a period of time; finally, th...

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Abstract

The invention provides a ternary composite photocatalytic nanometer reactor as well as a preparation method and an application thereof. The preparation method comprises the following steps: a step 1: a g-C3N4 photocatalyst is prepared; a step 2: a binary composite photocatalytic material Fe3O4/g-C3N4 is prepared; a step 3: the ternary composite photocatalytic nanometer reactor SiO2/Fe3O4/g-C3N4 is prepared. The ternary composite photocatalytic nanometer reactor SiO2/Fe3O4/g-C3N4 as well as the preparation method and the application thereof are disclosed, g-C3N4 is the novel organic visible photocatalyst, and at the same time, Fe3O4 nanoparticles have excellent magnetic and conductive performances. The ternary composite photocatalytic nanometer reactor has good stability and photocatalytic activity.

Description

technical field [0001] The invention relates to a photocatalyst, in particular to a ternary composite photocatalytic nano-reactor and its preparation method and application. Background technique [0002] In recent years, the irrational use of antibiotics has caused great harm to the environment, taking tetracycline antibiotics as an example. Tetracycline antibiotics (Tetracycline Antibiotics, TCs) are produced by Actinomycetes or semi-synthetic broad-spectrum antibacterial drugs, mainly including tetracycline, oxytetracycline and aureomycin, in promoting the growth of livestock and poultry, improving feed remuneration , disease prevention and other aspects play an important role. Due to the needs of the livestock and poultry breeding industry, the abuse of tetracyclines occurs from time to time, and the extensive use of antibiotics in the breeding industry eventually leads to antibiotic residues in farmed products. Therefore, it brings potential harm to the health of human...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/10B01J27/24C02F1/28C02F1/30B01J20/30
CPCB01J27/24B01J20/0259B01J20/06B01J20/103C02F1/281C02F1/30
Inventor 朱志于洋康溯逯子扬霍鹏伟闫永胜李春香
Owner JIANGSU UNIV
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