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Titanium sheet with surface modified sulfur doped titanium dioxide nanoflakes as well as preparation method and application of titanium sheet

A titanium dioxide and surface modification technology, which is applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve the problems of poor electrical conductivity and strong acid resistance, and achieve good stability and good electrical conductivity , the effect of high electrocatalytic activity

Active Publication Date: 2018-11-23
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the modification of transition metal oxides on the surface of titanium electrodes has defects such as poor conductivity, strong acid resistance, and no good electrocatalytic performance. Modifying sulfur-doped titanium dioxide on the surface of titanium will help improve the conductivity of titanium electrodes and increase their electrical conductivity. Catalytic performance and acid resistance, enabling it to promote the decomposition of hydroiodic acid (HI) and generate hydrogen gas

Method used

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  • Titanium sheet with surface modified sulfur doped titanium dioxide nanoflakes as well as preparation method and application of titanium sheet
  • Titanium sheet with surface modified sulfur doped titanium dioxide nanoflakes as well as preparation method and application of titanium sheet
  • Titanium sheet with surface modified sulfur doped titanium dioxide nanoflakes as well as preparation method and application of titanium sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Titanium sheet surface treatment

[0041] The cut titanium sheet (2×3cm) was ultrasonically treated with acetone, distilled water and ethanol for 30 minutes respectively, and the treated titanium sheet was air-dried.

[0042] (2) Preparation of mixed solution

[0043] Dissolve 1g of urea and 0.25g of TAA in a mixed solution of 15mL of distilled water and 15mL of ethanol, and stir magnetically at room temperature until the urea and TAA are evenly dispersed to obtain a mixed solution of urea and TAA (the concentration of urea is 0.56mol / L, the concentration of TAA The concentration is 0.111mol / L).

[0044] (3) Modification of the surface of the titanium sheet

[0045] The titanium sheet after step (1) has been processed leans against the inner wall of the polytetrafluoroethylene kettle lining, and then the mixed solution obtained by step (2) preparation is transferred to the polytetrafluoroethylene kettle lining of 50mL, Install the reaction kettle and react in an ...

Embodiment 2

[0047] (1) Titanium sheet surface treatment

[0048] The cut titanium sheet (2×3cm) was ultrasonically treated with acetone, distilled water and ethanol for 30 minutes respectively, and the treated titanium sheet was air-dried.

[0049] (2) Preparation of mixed solution

[0050] Dissolve 1g of urea and 0.25g of TAA in a mixed solution of 15mL of distilled water and 15mL of ethanol, and stir magnetically at room temperature until the urea and TAA are evenly dispersed to obtain a mixed solution of urea and TAA (the concentration of urea is 0.56mol / L, the concentration of TAA The concentration is 0.111mol / L).

[0051] (3) Modification of the surface of the titanium sheet

[0052] The titanium sheet after step (1) has been processed leans against the inner wall of the polytetrafluoroethylene kettle lining, and then the mixed solution obtained by step (2) preparation is transferred to the polytetrafluoroethylene kettle lining of 50mL, Install the reaction kettle and react in an ...

Embodiment 3

[0054] (1) Titanium sheet surface treatment

[0055] The cut titanium sheet (2×3cm) was ultrasonically treated with acetone, distilled water and ethanol for 30 minutes respectively, and the treated titanium sheet was air-dried.

[0056] (2) Preparation of mixed solution

[0057] Dissolve 1g of urea and 0.25g of TAA in a mixed solution of 15mL of distilled water and 15mL of ethanol, and stir magnetically at room temperature until the urea and TAA are evenly dispersed to obtain a mixed solution of urea and TAA (the concentration of urea is 0.56mol / L, the concentration of TAA The concentration is 0.111mol / L).

[0058] (3) Modification of the surface of the titanium sheet

[0059] The titanium sheet after step (1) has been processed leans against the inner wall of the polytetrafluoroethylene kettle lining, and then the mixed solution obtained by step (2) preparation is transferred to the polytetrafluoroethylene kettle lining of 50mL, Install the reaction kettle and react in an ...

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Abstract

The invention discloses a titanium sheet with surface modified sulfur doped titanium dioxide nanoflakes as well as a preparation method and application of the titanium sheet, and belongs to the technical field of inorganic chemical synthesis. The preparation method comprises the following steps: by taking the titanium sheet as a substrate material, urea as an alkali source and thioacetamine (TAA)as a sulfur source, reacting in a mixed solution of water and ethanol for 12 to 72 hours under the hydrothermal condition of 115 to 125 DEG C; washing and naturally drying a product to obtain the titanium sheet modified by the sulfur doped titanium dioxide nanoflakes. The surface of the titanium sheet obtained by reaction is uniformly modified by the sulfur doped titanium dioxide nanoflakes. The electrochemical performance of the obtained product is tested; the product has excellent catalytic property as an anode for producing hydrogen by hydroiodic acid electrolysis in the iodine-sulfur cycle; in addition, with high acid resistance and good electrocatalytic stability, the titanium sheet can be applied to the fields of hydrogen production by the hydroiodic acid electrolysis in the iodine-sulfur cycle and the like.

Description

technical field [0001] The invention belongs to the technical field of inorganic chemical synthesis, and in particular relates to a surface-modified titanium sheet of sulfur-doped titanium dioxide nanosheets, a preparation method and an application thereof. The titanium sheet can be applied to fields such as hydrogen production by hydriodic acid electrolysis in an iodine-sulfur cycle . Background technique [0002] The iodine-sulfur thermodynamic cycle was first proposed in the 1980s and is considered to be one of the most promising approaches to large-scale hydrogen production. It includes three reactions: Bunsen reaction, sulfuric acid decomposition reaction and hydroiodic acid decomposition reaction, but Because it needs a large amount of heat to realize the decomposition of sulfuric acid and hydroiodic acid, it has not been widely used. Since the beginning of the 21st century, the iodine-sulfur cycle has been extensively studied in the field of electrocatalysis, especia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04C25B1/04C25B11/06
CPCC25B1/04B01J27/04C25B11/057C25B11/091B01J35/33Y02E60/36
Inventor 赵旭王雄伟
Owner JILIN UNIV
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