Titanium dioxide catalyst loaded with tannic acid nickel iron, catalytic system, and preparation method and applications thereof

A technology of titanium dioxide and catalytic system, 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 large specific surface area Effect

Active Publication Date: 2019-07-09
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 loaded with tannic acid nickel iron, catalytic system, and preparation method and applications thereof
  • Titanium dioxide catalyst loaded with tannic acid nickel iron, catalytic system, and preparation method and applications thereof
  • Titanium dioxide catalyst loaded with tannic acid nickel iron, catalytic system, and preparation method and applications thereof

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 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.

[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.

...

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 tannic acid nickel iron, a catalytic system, and a preparation method and applications thereof. The titanium dioxide catalyst loaded with tannic acid nickel iron is prepared through following steps: titanium dioxide nanorods are added into a mixed aqueous solution of nickel chloride and iron chloride for standing for 5 to 20min, so that full adsorption of nickel chloride and iron chloride by the titanium dioxide nanorods is realized; 2, a tannic acid solution and a sodium hydroxide solution are added into a reaction system obtained in step 1 in sequence, after reaction, washing and air drying are carried out so as to obtain the titanium dioxide catalyst loaded with tannic acid nickel iron. The obtained TiO2@TA-Ni3Fe possessesmore active sites, and is stable in structure; tannic acid nickel iron complex is capable of accelerating transferring and transmission of light induced charge carriers as an oxygen producing cocatalyst, and possesses obvious advantage effecs on anode photocatalysis oxygen production.

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 Applications(China)
IPC IPC(8): B01J31/22B01J35/02C25B1/04C25B11/06
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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