Preparation method and application of rhodium-based electro-catalytic material

An electrocatalytic material, rhodium-based technology, applied in the field of electrocatalytic hydrogen evolution, can solve the problems of poor catalytic performance, easy agglomeration, weakened electrocatalytic effect of rhodium-based hydrogen evolution electrocatalytic material, etc. The effect of catalytic hydrogen evolution effect

Pending Publication Date: 2021-12-07
CHONGQING TECH & BUSINESS UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to solve the problem that the existing rhodium-based hydrogen evolution electrocatalytic materials are easy to agglomerate, so that the electrocatalytic effect of the rhodium-based hydrogen evolution electrocatalytic materials is weakened and the catalytic performance is poor. Preparation method of rhodium-based hydrogen evolution electrocatalytic material

Method used

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  • Preparation method and application of rhodium-based electro-catalytic material
  • Preparation method and application of rhodium-based electro-catalytic material
  • Preparation method and application of rhodium-based electro-catalytic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) In a 250ml beaker A, put a stirring bar, then add 0.2g melamine, and 12mg rhodium trichloride, after adding 80ml distilled water, put the beaker A on a magnetic stirrer for 1 hour. In a 100ml beaker B, add 0.2g cyanuric acid, then add 80ml distilled water, and ultrasonically dissolve it for 30 minutes.

[0033] (2) Pour the dissolved cyanuric acid solution, namely beaker B, into the melamine solution dissolved with rhodium trichloride, namely beaker A, and continue stirring for 1 hour at room temperature to obtain a mixed solution.

[0034] (3) The mixed solution was then placed in a 200ml reaction kettle, kept at 180° C. for 6 hours, and cooled to room temperature to obtain a reacted mixed solution.

[0035] (4) Then, the mixed solution in (3) is suction-filtered and then dried, and the drying condition is 80° C. for 12 hours to obtain a self-assembly precursor.

[0036] (5) Transfer the self-assembled precursor to a quartz boat, cover it and place it in a tube fu...

Embodiment 2

[0038] (1) In a 250ml beaker A, put a stirring bar, then add 0.2g melamine, and 2mg rhodium trichloride, after adding 80ml distilled water, put the beaker A on a magnetic stirrer for 1 hour. In a 100ml beaker B, add 0.2g cyanuric acid, then add 80ml distilled water, and ultrasonically dissolve it for 30 minutes.

[0039] (2) Pour the dissolved cyanuric acid solution, namely beaker B, into the melamine solution dissolved with rhodium trichloride, namely beaker A, and continue stirring for 1 hour at room temperature to obtain a mixed solution.

[0040] (3) The mixed solution was then placed in a 200ml reaction kettle, kept at 180° C. for 6 hours, and cooled to room temperature to obtain a reacted mixed solution.

[0041] (4) Then, the mixed solution in (3) is suction-filtered and then dried, and the drying condition is 80° C. for 12 hours to obtain a self-assembly precursor.

[0042] (5) Transfer the self-assembled precursor to a quartz boat, cover it and place it in a tube fur...

Embodiment 3

[0044] (1) In a 250ml beaker A, put a stirring bar, then add 0.2g melamine and 6mg rhodium trichloride, after adding 80ml distilled water, put the beaker A on a magnetic stirrer for 1 hour. In a 100ml beaker B, add 0.2g cyanuric acid, then add 80ml distilled water, and ultrasonically dissolve it for 30 minutes.

[0045](2) Pour the dissolved cyanuric acid solution, namely beaker B, into the melamine solution dissolved with rhodium trichloride, namely beaker A, and continue stirring for 1 hour at room temperature to obtain a mixed solution.

[0046] (3) The mixed solution was then placed in a 200ml reaction kettle, kept at 180° C. for 6 hours, and cooled to room temperature to obtain a reacted mixed solution.

[0047] (4) Then, the mixed solution in (3) is suction-filtered and then dried, and the drying condition is 80° C. for 12 hours to obtain a self-assembly precursor.

[0048] (5) Transfer the self-assembled precursor to a quartz boat, cover it and place it in a tube furna...

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Abstract

The invention discloses a preparation method and application of a rhodium-based electro-catalytic material. Electro-catalytic hydrogen evolution has the advantages of being clean, environmentally friendly, low in equipment requirement and the like, however, high overpotential is a main obstacle of water electrolysis hydrogen production, and therefore an appropriate electro-catalyst needs to be found urgently. Rhodium as a cheap substitute of platinum shows excellent platinum-like performance in electro-catalysis, but simple and extendable synthesis of a rhodium catalyst with excellent hydrogen production performance still faces huge challenges. When the self-assembly precursor is prepared, metal rhodium can be changed into monatomic rhodium, rhodium atoms are highly dispersed, agglomeration of the metal rhodium in the calcination process is avoided, and therefore the excellent electro-catalysis hydrogen evolution effect is achieved.

Description

technical field [0001] The invention relates to the technical field of electrocatalytic hydrogen evolution, in particular to a preparation method and application of a rhodium-based hydrogen evolution electrocatalytic material. Background technique [0002] Environment and energy are the two unshakable cornerstones on which human beings depend for survival. Although, the latest technologies such as wind and solar energy are currently being researched to remedy the problems of environmental pollution and energy shortage, the development of modern technology still relies heavily on fossil fuels. Therefore, the basic and realistic way to solve environmental and energy problems is still to explore clean and sustainable energy to meet the ever-increasing energy demand. As a clean and environmentally friendly energy, hydrogen has the characteristics of rich resources, high calorific value, and renewable. It is favored by many scholars and is considered to be a clean energy that ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/46B01J35/00C25B1/04C25B11/093
CPCB01J35/0066B01J23/464B01J35/0033C25B1/04Y02E60/36
Inventor 谭雨薇
Owner CHONGQING TECH & BUSINESS UNIV
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