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Preparation method of In2S3-TiO2/electrospun fiber composite photocatalyst

An electrospinning fiber and catalyst technology, which is applied in the field of preparation of In2S3-TiO2/electrospun fiber composite photocatalyst, can solve the problems of only absorbing ultraviolet light, low utilization rate of sunlight, and narrow light absorption range, and achieves the utilization of light source. The effect of high rate, enhanced interaction ability, and increased hydrogen production rate

Inactive Publication Date: 2017-06-20
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] TiO 2 and chalcogenide semiconductors are two common types of photocatalysts, TiO 2 Has many advantages, non-toxic, stable properties, high photocatalytic efficiency, good acid and alkali resistance, but TiO 2 The light absorption range is narrow, the utilization rate of sunlight is low, and it can only absorb ultraviolet light, so the application range is limited

Method used

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  • Preparation method of In2S3-TiO2/electrospun fiber composite photocatalyst
  • Preparation method of In2S3-TiO2/electrospun fiber composite photocatalyst
  • Preparation method of In2S3-TiO2/electrospun fiber composite photocatalyst

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Experimental program
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Effect test

Embodiment 1

[0028] (1) Add 0.41g SMA and 3.6g PVDF to the belt stirring and N 2 In a protected three-necked flask, dissolve 14 ml of acetone and 20 ml of DMAC in the three-necked flask, stir and dissolve for 24 hours to obtain a spinning solution.

[0029] (2) The spinning solution obtained in step (1) is prepared in an electrospinning device to obtain a PVDF / SMA electrospun fiber mat, the spinning voltage is 16kv, and the distance between the receiving device and the spinneret is 15-25cm , the flow rate of spinning solution is 0.4ml / h.

[0030](3) Soak 0.45g of the PVDF / SMA electrospun fiber mat obtained in step (2) into 40ml of 0.25mol / L titanyl sulfate aqueous solution, soak for 24h, place it in a hydrothermal reaction kettle, react at 120°C for 14h, and naturally Cool to room temperature, wash and dry to obtain TiO 2 / Electrospun fiber mat.

[0031] (4) 0.58g TiO obtained in step (3) 2 / Immerse the electrospun fiber in 25ml 0.25mol / L indium nitrate aqueous solution, add 25ml 0.5m...

Embodiment 2

[0033] (1) Add 0.4g SMA and 4.0g PVDF to the belt stirring and N 2 In a protected three-necked flask, dissolve 15ml of acetone and 22ml of DMAC in the three-necked flask, stir and dissolve for 24 hours, and obtain a spinning solution.

[0034] (2) The spinning solution obtained in step (1) is prepared in an electrospinning device to obtain a PVDF / SMA electrospun fiber mat, the spinning voltage is 16kv, and the distance between the receiving device and the spinneret is 15-25cm , the flow rate of spinning solution is 0.4ml / h.

[0035] (3) Soak 0.5g of the PVDF / SMA electrospun fiber mat obtained in step (2) into 50ml of 0.5mol / L titanyl sulfate aqueous solution, soak for 24h, place it in a hydrothermal reaction kettle, react at 120°C for 14h, and naturally Cool to room temperature, wash and dry to obtain TiO 2 / Electrospun fiber mat.

[0036] (4) 0.74g TiO obtained in step (3) 2 / Immerse the electrospun fiber in 25ml 0.5mol / L indium nitrate aqueous solution, add 25ml 0.5mol / ...

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Abstract

The invention relates to a preparation method of an In2S3-TiO2 / electrospun fiber composite photocatalyst. The preparation method comprises the following steps: preparing a PVDF (Polyvinylidene Fluoride) / SMA electrospun fiber felt, preparing a TiO2 / electrospun fiber felt, and preparing the In2S3-TiO2 / electrospun fiber composite photocatalyst. The preparation method disclosed by the invention has the beneficial effects as follows: (1) the interaction capacity of an organic phase and an inorganic phase in the composite catalytic material is enhanced, so that the hydrogen production rate is increased; (2) the composite catalytic material has good repeatability and stability under visible light irradiation, and the specific surface area of the In2S3-TiO2 loaded on the surface of the eletrospun fiber is high and can achieve 0.067-0.096m<2>. / g, and the light source use ratio is high.

Description

technical field [0001] The invention belongs to the field of composite nanofibers and relates to an In 2 S 3 -TiO 2 / Preparation method of electrospun fiber composite photocatalyst. Background technique [0002] Hydrogen energy is an ideal new type of energy containing energy. Hydrogen is not only a high-quality fuel, but also an important raw material and material in industrial production. Hydrogen energy has many advantages such as high calorific value, safe and environmentally friendly storage and use, and convenient transportation. It is considered to be the most ideal green energy in the new century and has attracted widespread attention from scholars all over the world. Photocatalytic degradation of organic pollutants has also become an ideal method to solve environmental pollution problems. In order to find photocatalysts that can effectively utilize solar energy, many scholars at home and abroad have done a lot of research. At present, powder photocatalytic mate...

Claims

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Application Information

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IPC IPC(8): B01J31/38B01J27/04B01J35/06B01J35/10D04H1/4382D04H1/728
CPCD04H1/4382D04H1/728B01J27/04B01J31/06B01J31/38B01J35/58B01J35/612
Inventor 陈海飞杨洁金懿豪郭晶晶
Owner CHANGZHOU UNIV
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