Photocatalytic nano composite material as well as preparation method and application thereof

A nanocomposite material and photocatalytic technology, which is applied in the field of photocatalytic nanocomposite materials and its preparation and application, can solve the problems of easy powder agglomeration, poor catalytic performance, and difficulty in separation and recovery, and achieve high degradation efficiency and excellent photocatalysis. The effect of high catalytic stability, reusability and high recovery rate

Active Publication Date: 2021-02-19
上海伊纯实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention is to overcome the photocatalyst TiO that is used for purifying pollutant in the prior art 2 The powder is easy to agglomerate, and it is difficult to separate and recycle, and when forming a composite catalyst with a carrier such as natural cellulose, the catalytic performance is not good, etc., and a photocatalytic nanocomposite material and its preparation method and application are provided.

Method used

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  • Photocatalytic nano composite material as well as preparation method and application thereof
  • Photocatalytic nano composite material as well as preparation method and application thereof
  • Photocatalytic nano composite material as well as preparation method and application thereof

Examples

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Embodiment 1

[0066] Example 1 Photocatalytic Nanocomposite BC-TiO 2 - Preparation of RGO

[0067] In this embodiment, bacterial cellulose is added in the form of bacterial cellulose gel film, and its scanning electron microscope picture is shown in figure 1 . In bacterial cellulose, its microstructure is 3D network structure formed by the interweaving of microfibrils, the diameter of microfibrils is 10-100nm; the crystallinity of bacterial cellulose is 79.5%;

[0068] (1) Pretreatment of the bacterial cellulose gel membrane: cut the bacterial cellulose gel membrane into a size of 10cm×10cm, soak in deionized water for 24h, and change the water every 2h. Then put it into an aqueous solution of sodium hydroxide with a concentration of 0.1mol / L and cook for 1 hour at a temperature of 100°C, wash it with deionized water until the cleaning solution is neutral, then dry it in an oven at 40°C for 2 hours, and then Transfer to a vacuum drying oven and dry at 50°C for 10 hours to obtain a bacter...

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Abstract

The invention discloses a photocatalytic nano composite material as well as a preparation method and application thereof. The preparation method of the photocatalytic nano composite material comprisesthe following steps of: sequentially adding reduced graphene oxide, bacterial cellulose and a nano titanium oxide precursor into a mixed solution of a cosurfactant and a surfactant, mixing, adjustingthe pH value of the system to 7-9, and reacting to obtain the photocatalytic nano composite material BC-TiO2-RGO. The efficient photocatalytic nano composite material prepared by the invention has excellent photocatalytic performance and photocatalytic stability, has ideal photocatalytic degradability on printing and dyeing wastewater, is high in degradation efficiency and relatively high in reutilization degree and recovery rate, and has an ideal effect and does not affect the recycling of printing and dyeing wastewater when being used for treating printing and dyeing wastewater.

Description

technical field [0001] The invention relates to a photocatalytic nanocomposite material and its preparation method and application. Background technique [0002] With the rapid development of the textile industry, a large amount of dye wastewater is produced in the textile field, and the pollution reduction in the printing and dyeing process has become an urgent and urgent problem to be solved. With the continuous rise of tap water charges and sewage charges, printing and dyeing enterprises pay more and more attention to clean production. Among them, the reuse of printing and dyeing wastewater has attracted widespread attention. [0003] Photocatalytic degradation is based on the redox ability of photocatalysts under ultraviolet light to purify pollutants. It is an environmentally friendly technology that is both efficient and energy-saving in the treatment of printing and dyeing wastewater. Titanium dioxide (TiO 2 ) as a heterogeneous photocatalytic oxidant has the advant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/06B01J31/38B01J35/06C02F1/32C02F1/72C02F101/30
CPCB01J31/06B01J31/38B01J35/004B01J35/023B01J35/065C02F1/32C02F1/725C02F2305/10C02F2101/308
Inventor 杨群崔进张育方梁琦
Owner 上海伊纯实业有限公司
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