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Preparation method of visible light compound photocatalyst and finishing method of cotton fabric by use of visible light compound photocatalyst

A composite light and catalyst technology, applied in the field of textile materials, can solve the problems of photogenerated carrier instability, low quantum efficiency, and low energy efficiency, and achieve antibacterial self-cleaning performance, fast degradation rate, and low cost.

Inactive Publication Date: 2018-01-09
YANCHENG INST OF TECH
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  • Claims
  • Application Information

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Problems solved by technology

[0003] Metal oxides are widely used in photocatalytic materials due to the advantages of abundant sources, low price, non-toxicity and harmlessness. However, most of them are forbidden broadband and can only use 3-5% of the ultraviolet light in sunlight, and the energy efficiency is low; The photogenerated carriers in the excited state are unstable and easy to recombine, with low quantum efficiency and poor activity

Method used

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  • Preparation method of visible light compound photocatalyst and finishing method of cotton fabric by use of visible light compound photocatalyst
  • Preparation method of visible light compound photocatalyst and finishing method of cotton fabric by use of visible light compound photocatalyst

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[0027] An embodiment of the present invention provides a method for preparing a visible light composite photocatalyst, comprising the following steps:

[0028] Step 101): preparing self-doped tin dioxide; the chemical formula of said self-doped tin dioxide is SnO 2-x , x represents the doping ratio of divalent tin, and the value of x ranges from 0 to 1. The value of x can be 0, 1 or a value between 0 and 1.

[0029] Step 102): preparing a visible light composite photocatalyst of graphene oxide and self-doped tin dioxide.

[0030] Step 103): Carrying out hydroxyl reaction on the visible light composite photocatalyst prepared in step 102) to make a carboxylated visible light composite photocatalyst.

[0031] Wherein, preferably, the process of step 101) is: adding tin tetrachloride pentahydrate and metal tin powder into water, stirring to form a transparent yellow solution. Preferably, in the transparent yellow solution, the molar ratio of tin tetrachloride pentahydrate to me...

Embodiment 1

[0044] A method for finishing cotton fabrics, comprising the steps of:

[0045] Step 1): preparing a visible light composite photocatalyst, including:

[0046] Step 101): Prepare self-doping tin dioxide: add tin tetrachloride pentahydrate and metal tin powder into water, stir to form a transparent yellow solution; in the transparent yellow solution, tin tetrachloride pentahydrate and metal tin powder The molar ratio is 1:10. Put the transparent yellow solution in a reaction kettle, react at 150°C for 24 hours, take out the reacted solution, cool to room temperature, and centrifuge to obtain a dark yellow precipitate; then wash the dark yellow precipitate with deionized water to remove impurities; finally, put The dark yellow precipitate was dried in a vacuum oven at 60°C for 24 hours to obtain self-doped tin dioxide doped with divalent tin.

[0047] Step 102): preparing a visible light composite photocatalyst of graphene oxide and self-doped tin dioxide; adding the self-dope...

Embodiment 2

[0052] A method for finishing cotton fabrics, comprising the steps of:

[0053] Step 1): preparation of visible light composite photocatalyst, including

[0054] Step 101): Prepare self-doping tin dioxide: add tin tetrachloride pentahydrate and metal tin powder into water, stir to form a transparent yellow solution; in the transparent yellow solution, tin tetrachloride pentahydrate and metal tin powder The molar ratio is 1:8. Put the transparent yellow solution in a reaction kettle, react at 120°C for 20 hours, take out the reacted solution, cool to room temperature, and centrifuge to obtain a dark yellow precipitate; then wash the dark yellow precipitate with deionized water to remove impurities; finally, put The dark yellow precipitate was dried in a vacuum oven at 50°C for 22 hours to prepare self-doped tin dioxide doped with divalent tin.

[0055] Step 102): preparing a visible light composite photocatalyst of graphene oxide and self-doped tin dioxide; adding the self-do...

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Abstract

The invention discloses a preparation method of a visible light compound photocatalyst and a finishing method of cotton fabric by use of the visible light compound photocatalyst. The preparation method comprises steps as follows: step 101), preparing self-doped tin dioxide; step 102), preparing a visible light compound photocatalyst by use of graphene oxide and self-doped tin dioxide; step 103), performing a carboxylation reaction on the prepared visible light compound photocatalyst, and preparing a carboxylic visible light compound photocatalyst. The visible light compound photocatalyst has high efficiency and high activity, and the cotton fabric has efficient and durable anti-ultraviolet, anti-static, antibacterial and self-cleaning performance after being finished with the visible lightcompound photocatalyst.

Description

technical field [0001] The invention belongs to the technical field of textile materials, and in particular relates to a preparation method of a visible light composite photocatalyst and a finishing method for cotton fabrics. Background technique [0002] With the development of the economy, people are increasingly dependent on the use of non-renewable fossil fuels. Extensive use of fossil fuels has caused a series of global problems such as environmental pollution, energy shortages, and climate warming. Therefore, seeking clean energy and renewable energy is a difficult problem and challenge for the sustainable development of human civilization. At present, in addition to petroleum, coal, hydropower, natural gas, wind energy and nuclear power that promote the energy of human society, actively researching, exploring and developing alternative sustainable energy is the goal pursued by human beings to better protect the environment and protect resources one. Various renewab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/14B01J31/26D06M11/74D06M11/20D06M13/207D06M13/463D06M101/06
Inventor 祁珍明王春霞郑成辉季萍陈晓敏唐琪符宇航姚鑫陈海家
Owner YANCHENG INST OF TECH
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