A kind of nisn/tio 2 @znfe 2 o 4 Electrocatalyst and its preparation method

An electrocatalyst, znfe2o4 technology, applied in the direction of electrodes, electrolysis components, electrolysis process, etc., to achieve the effect of promoting uniform dispersion, reducing the probability, and excellent conductive electronic performance

Active Publication Date: 2022-04-22
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

ZnFe with porous spherical structure 2 o 4 with TiO 2 Composite and supported metals, alloys or oxides for CO 2 Catalytic reduction has not been reported

Method used

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  • A kind of nisn/tio <sub>2</sub> @znfe <sub>2</sub> o <sub>4</sub> Electrocatalyst and its preparation method
  • A kind of nisn/tio <sub>2</sub> @znfe <sub>2</sub> o <sub>4</sub> Electrocatalyst and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Porous spherical nano-ZnFe 2 o 4 Synthesis

[0029] 2.975g (0.01mol) of Zn(NO 3 ) 2 ·6H 2 O, 8.081g (0.02mol) of Fe(NO 3 ) 3 9H 2 O and 12.608g (0.06mol) citric acid were dissolved in 60mL of deionized water, 0.8mL of PEG 400 was added, stirred for 30 minutes to dissolve, the mixture was transferred to a 100mL stainless steel autoclave, and reacted at 180°C for 12h. The reaction kettle was naturally cooled to room temperature, and the obtained product was washed three times with distilled water and absolute ethanol, dried in a vacuum oven at 80°C, and roasted in a muffle furnace at 500°C for 3h with porous spherical nano-ZnFe 2 o 4 .

[0030] (2) Porous TiO 2 @ZnFe 2 o 4 Synthesis

[0031] Using the sol-gel method. Dissolve 17mL butyl titanate in 22mL absolute ethanol, add 0.68mL PEG-400 and 0.1667g porous nano ZnFe 2 o 4 , add dropwise a mixture of 22mL of absolute ethanol, 3.6mL of glacial acetic acid and 3.6mL of deionized water under stirring, hy...

Embodiment 2

[0037] (1) Porous spherical nano-ZnFe 2 o 4 Synthesis

[0038] 2.975g (0.01mol) of Zn(NO 3 ) 2 ·6H 2 O, 8.081g (0.02mol) of Fe(NO 3 ) 3 9H 2 O and 12.608g (0.06mol) citric acid were dissolved in 60mL of deionized water, 0.8mL of PEG 400 was added, stirred for 30 minutes to dissolve, the mixture was transferred to a 100mL stainless steel autoclave, and reacted at 180°C for 12h. The reaction kettle was naturally cooled to room temperature, and the obtained product was washed three times with distilled water and absolute ethanol, dried in a vacuum oven at 80°C, and roasted in a muffle furnace at 500°C for 3h with porous spherical nano-ZnFe 2 o 4 .

[0039] (2) Porous TiO 2 @ZnFe 2 o 4 Synthesis

[0040] Using the sol-gel method. Dissolve 17mL butyl titanate in 22mL absolute ethanol, add 0.68mL PEG-400 and 0.1237g porous nano ZnFe 2 o 4 , add dropwise a mixture of 22mL of absolute ethanol, 3.6mL of glacial acetic acid and 3.6mL of deionized water under stirring, hy...

Embodiment 3

[0046] (1) Porous spherical nano-ZnFe 2 o 4 Synthesis

[0047] 2.975g (0.01mol) of Zn(NO 3 ) 2 ·6H 2 O, 8.081g (0.02mol) of Fe(NO 3 ) 3 9H 2 O and 12.608g (0.06mol) citric acid were dissolved in 60mL of deionized water, 0.8mL of PEG 400 was added, stirred for 30 minutes to dissolve, the mixture was transferred to a 100mL stainless steel autoclave, and reacted at 180°C for 12h. The reaction kettle was naturally cooled to room temperature, and the obtained product was washed three times with distilled water and absolute ethanol, dried in a vacuum oven at 80°C, and roasted in a muffle furnace at 500°C for 3h with porous spherical nano-ZnFe 2 o 4 .

[0048] (2) Porous TiO 2 @ZnFe 2 o 4 Synthesis

[0049] Using the sol-gel method. Dissolve 17mL butyl titanate in 22mL absolute ethanol, add 0.68mL PEG-400 and 0.2105g porous nano ZnFe 2 o 4 , add dropwise a mixture of 22mL of absolute ethanol, 3.6mL of glacial acetic acid and 3.6mL of deionized water under stirring, hy...

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Abstract

The invention discloses a NiSn / TiO 2 @ZnFe 2 o 4 Electrocatalyst and preparation method thereof, catalyst is made of porous spherical nanometer ZnFe 2 o 4 Support coated porous TiO 2 Made of loaded NiSn alloy. In the present invention, zinc ferrite nanomaterials with a porous spherical structure and porous TiO with lower band gap energy 2 Composite, reduce TiO 2 Bandgap energy, improve the transfer rate and efficiency of photogenerated electrons, improve the TiO 2 Catalytic performance; NiSn alloy has high electrocatalytic performance and also has excellent electrical conduction performance, which can greatly reduce the probability of photogenerated electron-hole recombination. In addition, TiO 2 The porous structure can promote the uniform dispersion of NiSn alloy on its surface and CO 2 molecular adsorption, and its synergistic effect greatly enhances the TiO 2 to CO 2 electrocatalytic reduction performance.

Description

technical field [0001] The invention belongs to the technical field of electrocatalyst preparation and relates to a NiSn / TiO 2 @ZnFe 2 o 4 Electrocatalyst and preparation method thereof, especially relate to a kind of for CO 2 Reduced NiSn / TiO 2 @ZnFe 2 o 4 Electrocatalyst and method for its preparation. Background technique [0002] With the increasing consumption of fossil energy, CO 2 The significant increase in emissions has broken the balance of the carbon cycle in nature and led to a continuous increase in the concentration of atmospheric greenhouse gases, which not only has a negative impact on the environment, but is also not conducive to the sustainable development of human society. If the CO 2 Recycling and converting them into usable resources can solve the above problems and achieve carbon neutrality and carbon recycling. In many CO 2 Among the conversion pathways, the electrocatalytic reduction method has attracted the attention of researchers because ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/091C25B1/23C25B1/55B22F1/18
CPCC25B11/091C25B1/23C25B1/55
Inventor 鞠剑峰章琴张毅婷叶延鹏李佳钰黄启浩齐星原胡源鑫
Owner NANTONG UNIVERSITY
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