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A kind of platinum/phosphorus catalyst and its preparation method and application

A platinum-carbon catalyst, catalyst technology, applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of low platinum utilization rate and high preparation cost, and achieve high cost efficiency, low cost, process handy effect

Active Publication Date: 2021-04-09
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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Problems solved by technology

In order to overcome the defects of the prior art, the present invention aims to solve the technical problems of high preparation cost and low platinum utilization rate of conventional platinum and platinum-based alloy catalysts in the prior art, thereby providing a catalyst with good stability and high catalytic activity. Platinum / phosphorus catalyst and its preparation method and application

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  • A kind of platinum/phosphorus catalyst and its preparation method and application
  • A kind of platinum/phosphorus catalyst and its preparation method and application
  • A kind of platinum/phosphorus catalyst and its preparation method and application

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preparation example

[0040] First synthesize graphene-supported platinum composite material (platinum carbon catalyst), at 28 ℃, 50mg sodium dodecylbenzenesulfonate was dissolved in 12.5mL water, 5mL ethanol, 50mg graphene nanosheets and 0.02mL ammonia water (28wt%) ) in the solution. To this solution were added 0.03 mL of formaldehyde (37 wt %) solution and 0.4 mL of potassium tetrachloroplatinate (0.1 mol / L) solution under vigorous stirring. After 24 hours, the temperature was raised to 70°C and held at this temperature for a further 12 hours. The solid product was collected by centrifugation and washed three times with water / ethanol to obtain a platinum-on-carbon catalyst.

[0041] The obtained platinum-carbon catalyst was dispersed in ethanol so that the platinum content was 0.5 mg / mL. Add 0.3 mL of black phosphorus nanosheet ethanol solution (0.1 mg / mL) to 1 mL of the platinum-carbon catalyst solution, and then sonicate for 3 minutes at normal temperature and pressure, and the solid product...

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Abstract

The invention discloses a platinum / phosphorus catalyst as well as its preparation method and application. This platinum / phosphorus catalyst is made by the following preparation method: 1) synthesis of platinum-carbon catalyst: carbon carrier, surfactant, alkali and solvent are mixed to obtain base mixed solution; then base mixed solution, reducing agent Mixing reaction with platinum salt solution, the solid product obtained is platinum carbon catalyst; 2) Phosphating of platinum carbon catalyst: the platinum carbon catalyst, phosphorus source and organic solvent are mixed and reacted, and the solid product obtained is platinum / phosphorus catalyst. At the same time, the application of the platinum / phosphorus catalyst as an electrocatalyst in electrochemical hydrogen evolution is also disclosed. Compared with the existing technology, the present invention can achieve the function of regulating the electronic structure of the metal platinum surface at low temperature and low pressure or even normal temperature and pressure, thereby obtaining a high-efficiency electrocatalytic material with simple synthesis, convenient process and low cost.

Description

technical field [0001] The invention relates to the field of catalyst materials, in particular to a platinum / phosphorus catalyst and its preparation method and application. Background technique [0002] Today, because of the excessive use of fossil fuels and the pollution of the environment, people have attracted widespread attention to renewable energy. Hydrogen is considered to be a promising chemical fuel for renewable energy applications due to its advantages of high energy density and zero environmental pollution. Water electrolysis is an efficient method for hydrogen production, but this method mainly relies on cathode catalysts. The precious metal platinum is by far the best hydrogen evolution catalyst. Due to its outstanding activity, selectivity and stability, platinum-based catalysts occupy overwhelming technical advantages and unshakable market share in many catalyst material systems, and have a wide range of uses in electrocatalytic reactions. However, due to ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/185C25B1/04C25B11/089
CPCB01J27/1856C25B1/04C25B11/04B01J27/185B01J37/28H01M4/94Y02E60/36Y02E60/50
Inventor 喻学锋白力诚王欣
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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