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A kind of porous carbon microsphere tio2 composite material and its preparation method and application

A composite material and porous carbon technology, applied in chemical instruments and methods, water/sludge/sewage treatment, water pollutants, etc., can solve the problems of difficult photocatalyst recovery and low catalytic degradation efficiency, and achieve faster photolysis speed and product detachment speed, high catalytic degradation efficiency, and less agglomeration

Inactive Publication Date: 2016-01-13
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention is aimed at the loading type TiO in the prior art 2 Photocatalyst treatment of organic wastewater has problems such as difficult recycling and low catalytic degradation efficiency. The purpose is to provide a porous carbon microsphere with stable structure, uniform particles and no agglomeration, easy recycling and reuse, and high adsorption performance and catalytic activity. TiO 2 composite material

Method used

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  • A kind of porous carbon microsphere tio2 composite material and its preparation method and application
  • A kind of porous carbon microsphere tio2 composite material and its preparation method and application
  • A kind of porous carbon microsphere tio2 composite material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1) Preparation of carbon microsphere precursor:

[0042] A certain amount of glucose is dissolved in distilled water to make a concentration of 1.5molL -1 The solution was magnetically stirred to fully dissolve the glucose in distilled water, and then transferred to a 100mL hydrothermal reactor to reach 75% of the volume of the reactor. After reacting at 180°C for 14 hours, take out the reaction kettle, wait for the reaction kettle to cool down to room temperature, take out the product, filter it with suction, wash alternately with distilled water and absolute ethanol until the pH value is about 7, dry at 80°C for 12 hours, and obtain carbon microspheres Precursor.

[0043] 2) Preparation of carbon microspheres:

[0044] The precursor of structured carbon microspheres was carbonized at 750°C in an Ar gas atmosphere for 1 h to obtain structured carbon microspheres.

[0045] 3) Preparation of porous carbon microspheres:

[0046] Put the prepared carbon microspheres in...

Embodiment 2

[0050] 1) Preparation of carbon microsphere precursor:

[0051] A certain amount of glucose is dissolved in distilled water to make a concentration of 2molL -1 The solution was magnetically stirred to fully dissolve the glucose in distilled water, and then transferred to a 100mL hydrothermal reactor to reach 70% of the volume of the reactor. After reacting at 180°C for 16 hours, take out the reaction kettle, wait for the reaction kettle to cool to room temperature, take out the product, filter it with suction, wash alternately with distilled water and absolute ethanol until the pH value is about 7, dry at 80°C for 12 hours, and obtain carbon microspheres Precursor.

[0052] 2) Preparation of carbon microspheres:

[0053] The carbon microsphere precursor was carbonized at 700°C in an Ar gas atmosphere for 2h to obtain carbon microspheres.

[0054] 3) Preparation of porous carbon microspheres:

[0055] Put the prepared carbon microspheres into an Erlenmeyer flask, slowly add...

Embodiment 3

[0059] 1) Preparation of carbon microsphere precursor:

[0060] A certain amount of glucose is dissolved in distilled water to make a concentration of 1molL -1 The solution was magnetically stirred to fully dissolve the glucose in distilled water, and then transferred to a 100mL hydrothermal reactor to reach 60% of the volume of the reactor. After reacting at 160°C for 18 hours, take out the reaction kettle, wait for the reaction kettle to cool to room temperature, take out the product, filter it with suction, wash alternately with distilled water and absolute ethanol until the pH value is about 7, dry at 60°C for 14 hours, and obtain carbon microspheres Precursor.

[0061] 2) Preparation of carbon microspheres:

[0062] The structured carbon microsphere precursor was carbonized at 600°C in an Ar gas atmosphere for 3h to obtain the structured carbon microspheres.

[0063] 3) Preparation of porous carbon microspheres:

[0064] Put the prepared carbon microspheres into an Er...

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Abstract

The invention discloses a porous carbon microsphere @TiO2 composite material and a preparation method and application thereof. Porous carbon microsphere @TiO2 is formed by evenly wrapping nano TiO2 on the surface of a porous carbon microsphere. The preparation method of the porous carbon microsphere @TiO2 composite material includes the steps that hydrothermal reaction, high-temperature carbonization and concentrated nitric acid activation are sequentially performed on glucose to obtain the porous carbon microsphere, TiO2 is prepared through a steam heat method, the surface of the porous carbon microsphere is wrapped by TiO2 in situ, and then the composite material is obtained. The preparation method is simple to operate and low in raw material price, and the prepared porous carbon microsphere @TiO2 composite material is stable in structure, meanwhile has high adsorption performance and catalytic activity, is applied to photocatalytic degradation of organic matter in waste water, and is high photocatalytic degradation, high in catalyst recovery rate and good in reuse effect.

Description

technical field [0001] The invention relates to a porous carbon microsphere TiO 2 The composite material and its preparation method and application belong to the field of photocatalyst organic wastewater treatment. Background technique [0002] Since Cary et al. reported in 1976, nano-TiO 2 Since it can dechlorinate and degrade the difficult biodegradable organic compound polychlorinated biphenyls, nano-TiO 2 As a water treatment technology, photocatalytic oxidation has attracted extensive attention of researchers. TiO 2 The photocatalytic reaction conditions are mild, the conversion efficiency is high, and there is no secondary pollution, but it is difficult to achieve photocatalyst particle size control, pore structure modulation, and surface area expansion, and TiO 2 Has strong hydrophilicity, ultrafine TiO 2 It is easy to agglomerate, causing problems such as difficulty in recycling after wastewater treatment. Therefore, it is necessary to find a method that can eff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/18B01J35/10C02F1/30C02F101/34
Inventor 汪形艳黄春辉戴友芝陈艳波唐熠胡清英
Owner XIANGTAN UNIV
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