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TiO2 fiber supporting CdS and MoS2 and preparation method thereof

A technology of titanium dioxide and molybdenum disulfide, applied in the field of photocatalysis, can solve the problems of easy recombination of photogenerated electrons and holes, low utilization rate of sunlight, etc., and achieve excellent photocatalytic activity, high photocatalytic efficiency, and easy separation

Inactive Publication Date: 2017-07-04
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] But TiO 2 There are two obvious deficiencies: one is that the band gap is wide (anatase Eg=3.2eV), it can only absorb ultraviolet light of λ<387.5nm, and the utilization rate of sunlight is low; the other is that photogenerated electrons and holes are easy to recombine
This method has not been reported so far

Method used

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  • TiO2 fiber supporting CdS and MoS2 and preparation method thereof
  • TiO2 fiber supporting CdS and MoS2 and preparation method thereof
  • TiO2 fiber supporting CdS and MoS2 and preparation method thereof

Examples

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Effect test

Embodiment 1

[0031] The preparation method steps of the present embodiment are:

[0032] (1) Dissolve 4 mL of n-butyl titanate, 2 mL of acetylacetone, and 0.8 g of PVP into 10 mL of absolute ethanol, and stir evenly to obtain a precursor sol;

[0033] (2) inject an appropriate amount of sol obtained in step (1) into the liquid supply device (syringe), the distance between the nozzle tip and the receiving plate is 15 cm, and a voltage of 12 kV is applied to obtain a fiber film;

[0034] (3) Dry the fiber film obtained in step (2) at a low temperature of less than 45°C for 12 hours, then place it in a tube furnace, heat up at 1°C / min, take it out after keeping it warm at 450°C for 5 hours, and grind it to obtain TiO 2 fiber;

[0035] (4) Take 100 mg of the titanium dioxide fiber obtained in step (3), disperse it in 20 mL of pure water with 77.5 mg of cadmium nitrate, and 90 mg of cysteine, and transfer it to a 30 mL reaction kettle after stirring;

[0036] (5) heat preservation in an oven...

Embodiment 2

[0040] The preparation method steps of the present embodiment are:

[0041] (1) Dissolve 4 mL of n-butyl titanate, 2 mL of acetylacetone, and 0.8 g of PVP into 10 mL of absolute ethanol, and stir evenly to obtain a precursor sol;

[0042] (2) inject an appropriate amount of sol obtained in step (1) into the liquid supply device (syringe), the distance between the nozzle tip and the receiving plate is 15 cm, and a voltage of 12 kV is applied to obtain a fiber film;

[0043] (3) Dry the fiber film obtained in step (2) at a low temperature of less than 45°C for 12 hours, then place it in a tube furnace, heat up at 1°C / min, take it out after keeping it warm at 450°C for 5 hours, and grind it to obtain TiO2 fiber;

[0044] (4) 100 mg of the titanium dioxide fiber obtained in step (3) was dispersed in 20 mL of pure water with 62 mg of cadmium nitrate and 72 mg of cysteine, stirred evenly and then transferred to a 30 mL reactor;

[0045] (5) heat preservation in an oven at 120 degr...

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Abstract

The invention relates to a TiO2 fiber supporting CdS and MoS2 and a preparation method thereof. The preparation method includes the steps of: preparing fibrous TiO2 fibers through high voltage electrostatic spinning; supporting the CdS through a hydrothermal method to form CdS nano particles, which are very small in size, on the surface of the fibers; and supporting sheet MoS2 through the hydrothermal method to finally preparing the TiO2 nano fiber supporting CdS and MoS2. The method is simple and the product is homogeneous and stable and is easy to separate and recycle from the reaction system. The TiO2 fiber supporting CdS and MoS2 can be applied in the fields of photo-catalytic water pollutant degradation, hydrogen producing, electro-catalysis, and sensors.

Description

technical field [0001] The invention belongs to the field of photocatalysis, and relates to a preparation method of titanium dioxide fibers loaded with cadmium sulfide and molybdenum disulfide. Background technique [0002] With the rapid development of the current industrial society, while the material life has been improved, environmental problems are not optimistic. The treatment of waste chemical emissions has received increasing attention. Dye wastewater is one of the main harmful industrial wastewater. Among many semiconductor photocatalytic materials, TiO 2 Because of the advantages of high stability, non-toxicity, no secondary pollution and low cost, it has great application value in the treatment of gas and water pollutants and light energy conversion. [0003] But TiO 2 There are two obvious deficiencies: one is that the band gap is wide (anatase Eg=3.2eV), it can only absorb ultraviolet light of λ<387.5nm, and the utilization rate of sunlight is low; the ot...

Claims

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Application Information

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IPC IPC(8): B01J27/051B01J35/06B01J35/10B01J37/34
CPCB01J27/051B01J37/342B01J35/58B01J35/61B01J35/39
Inventor 殷梅娇李晓天赵海鑫李楠
Owner JILIN UNIV
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