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Titanium dioxide catalyst, catalytic system, preparation method and application of nickel-iron tannate-loaded catalyst

A technology of titanium dioxide and ferronickel tannate, which is applied in the field of titanium dioxide photocatalytic composite materials loaded with ferronickel tannate and its preparation, can solve the problems of low overpotential, achieve accelerated transfer and transmission, good oxygen production performance, and specific surface area big effect

Active Publication Date: 2021-12-28
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is still a great challenge to develop highly efficient, stable, low overpotential, and high conversion oxygen evolution cocatalysts.

Method used

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  • Titanium dioxide catalyst, catalytic system, preparation method and application of nickel-iron tannate-loaded catalyst
  • Titanium dioxide catalyst, catalytic system, preparation method and application of nickel-iron tannate-loaded catalyst
  • Titanium dioxide catalyst, catalytic system, preparation method and application of nickel-iron tannate-loaded catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Step 1, cut the conductive glass to 1×3cm 2 After that, the conductive glass was soaked in acetone solution and water in turn and ultrasonicated for 15 minutes.

[0043] Step 2, mix 15mL of water, 15mL of concentrated hydrochloric acid and 0.5mL of tetrabutyl titanate in a stainless steel hydrothermal kettle, and stir for 15 minutes. Then put the treated glass piece in step 1 into a hydrothermal kettle with the conductive side facing down, then seal the hydrothermal kettle and react at 180° C. for 1 hour.

[0044] Step 3, after the temperature of the hydrothermal kettle in step 2 is cooled, clean the conductive glass with white product on the surface with water and alcohol respectively, and let it air dry naturally.

[0045] Step 4, calcining the conductive glass whose surface is a white product obtained in step 3 in the air at 500° C. for 2 hours to obtain a conductive glass sheet whose surface is a white titanium dioxide product.

[0046] Step 5, place the conductive ...

Embodiment 2

[0049] Step 1, cut the conductive glass to 1×3cm 2 After that, the conductive glass was soaked in acetone solution and water in turn and ultrasonicated for 15 minutes.

[0050] Step 2, mix 15mL of water, 15mL of concentrated hydrochloric acid and 1mL of tetrabutyl titanate in a stainless steel hydrothermal kettle, and stir for 15 minutes. Then take one of the treated glass sheets in step 1 and put it into a hydrothermal kettle with the conductive side facing down, then seal the hydrothermal kettle and react at a temperature of 180° C. for 1 hour.

[0051] Step 3, after the temperature of the hydrothermal kettle in step 2 is cooled, clean the conductive glass with white product on the surface with water and alcohol respectively, and let it air dry naturally.

[0052] Step 4, calcining the conductive glass whose surface is a white product obtained in step 3 in the air at 500° C. for 2 hours to obtain a conductive glass sheet whose surface is a white titanium dioxide product.

...

Embodiment 3

[0056] Step 1, cut the conductive glass to 1×3cm 2 After that, the conductive glass was soaked in acetone solution and water in turn and ultrasonicated for 15 minutes.

[0057] Step 2, mix 15mL of water, 15mL of concentrated hydrochloric acid and 0.5mL of tetrabutyl titanate in a stainless steel hydrothermal kettle, and stir for 15 minutes. Then take one of the treated glass sheets in step 1 and put it into a hydrothermal kettle with the conductive side facing down, then seal the hydrothermal kettle and react at a temperature of 180° C. for 1 hour.

[0058] Step 3, after the temperature of the hydrothermal kettle in step 2 is cooled, clean the conductive glass with white product on the surface with water and alcohol respectively, and let it air dry naturally.

[0059] Step 4, calcining the conductive glass whose surface is a white product obtained in step 3 in the air at 500° C. for 2 hours to obtain a conductive glass sheet whose surface is a white titanium dioxide product. ...

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Abstract

The invention discloses a titanium dioxide catalyst loaded with ferronickel tannin, a catalytic system and a preparation method and application thereof. The catalyst is prepared by the following method: placing titanium dioxide nanorods in a mixed aqueous solution of nickel chloride and ferric chloride, Stand still for 5-20 minutes, so that nickel chloride and ferric chloride are fully adsorbed on the titanium dioxide nanorods; step 2, add tannic acid solution and sodium hydroxide solution in order in the reaction system obtained in step 1, after the reaction is completed, After washing and drying, a titanium dioxide catalyst loaded with ferronickel tannate can be obtained. TiO 2 @TA‑Ni 3 Fe has more active sites and a stable structure. As an oxygen-generating cocatalyst, the nickel-iron tannin complex can accelerate the transfer and transport of photogenerated charge carriers, and has obvious advantages in anode photocatalytic oxygen generation.

Description

technical field [0001] The invention relates to the technical field of semiconductor nanomaterials, in particular to a titanium dioxide photoelectric catalytic composite material loaded with ferronickel tannate, a preparation method and application thereof. Background technique [0002] In recent years, with the outbreak of the energy crisis, the development of new energy is an urgent problem in today's society. Photocatalytic water splitting is considered to be one of the most attractive methods for solar energy harvesting and production of renewable fuels, and it has very important research value and application prospects for alleviating the energy shortage and environmental pollution problems faced by today's society. Since 1972, Japanese scholars Fujishima and Honda discovered titanium dioxide (TiO 2 After the phenomenon of photo-splitting water on the ) electrode, people began to invest a lot of energy in studying the photo-splitting performance of various semiconducto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/22B01J35/02C25B1/04C25B11/095
CPCB01J31/223B01J35/0033B01J35/004B01J35/02C25B1/04C25B11/04B01J2531/842B01J2531/847C25B11/075Y02E60/36
Inventor 张兵纪岩史艳梅黄义赵博航
Owner TIANJIN UNIV
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