Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for preparing hollow tubular graphite phase carbon nitride/platinum nanoparticle composite material through gamma irradiation

A graphite phase carbon nitride, platinum nanoparticle technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc. Inhomogeneity, restricting the development speed of fuel cells, etc., to achieve significant catalytic activity, optimize charge transport capacity, enhance conductivity and catalytic activity.

Pending Publication Date: 2021-10-15
TIANJIN POLYTECHNIC UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the development of fuel cells has the following problems: (1) The slow kinetics of cathode oxygen reduction reaction seriously restricts the development speed of fuel cells; (2) The current commercial cathode oxygen reduction catalysts are not only expensive, but also mostly chemically synthesized, which pollutes the environment and is not conducive to the development of fuel cells. eco friendly
[0005] Publication No. Chinese patent CN105236364A discloses a method for preparing tubular carbon nitride using natural rod-shaped silicate clay as a template, but this method needs to use highly toxic hydrogen fluoride and ammonium bifluoride to remove the template, which pollutes the environment and is harmful to the human body
Publication No. Chinese Patent CN109603880B discloses a preparation method of a hollow tubular carbon nitride photocatalytic material, but the prepared material tubular structure is unevenly distributed, and the actual application effect is poor
Publication No. Chinese Patent CN109772418A discloses a phosphorus-doped tubular carbon nitride nanomaterial. During the preparation process, the hydrothermal reaction method is used to synthesize the material with low yield, and the surface of the synthesized material has no hole defects and few active sites, which is not conducive to electrocatalysis. Oxygen reduction reaction proceeds efficiently

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing hollow tubular graphite phase carbon nitride/platinum nanoparticle composite material through gamma irradiation
  • Method for preparing hollow tubular graphite phase carbon nitride/platinum nanoparticle composite material through gamma irradiation
  • Method for preparing hollow tubular graphite phase carbon nitride/platinum nanoparticle composite material through gamma irradiation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0032] Embodiment 1-3 scheme is as follows:

[0033] Table 1 Embodiments 1-3 Graphite phase carbon nitride structure design parameters

[0034]

Embodiment 1

[0036] Step 1: Put a certain proportion of urea and citric acid into the crucible, stir evenly, place in a muffle furnace, heat up to 550°C at a rate of 2°C / min in an air atmosphere, keep it warm for 2 hours, and take out the sample after natural cooling , which is the bulk graphite phase carbon nitride.

[0037] The second step is to use a planetary ball mill to grind the bulk graphite phase carbon nitride into powder, the ball milling speed is 640rpm, the ball milling time is 10h, the size of the zirconium beads is 5nm, and then the sample after ball milling is sieved with a 500-mesh sieve to obtain particles Small size graphite phase carbon nitride nanosheets with small size and uniform cut.

[0038] Step 3: Weigh 100 mg of the graphitic carbon nitride prepared in Step 2, add 184 μL of phytic acid, 1104 μL of pyrrole, and 1 mL of isopropanol mixed solution, and then add the pre-configured ammonium persulfate solution drop by drop, Ultrasonic polymerization 10min. It was the...

Embodiment 2

[0043] Step 1: Put a certain proportion of urea and citric acid into the crucible, stir evenly, place in a muffle furnace, heat up to 550°C at a rate of 2.5°C / min in an air atmosphere, keep it warm for 3 hours, and take out the sample after natural cooling , which is bulk graphite phase carbon nitride.

[0044] The second step is to use a planetary ball mill to grind the bulk graphite phase carbon nitride into powder, the ball milling speed is 240rpm, the ball milling time is 8h, the size of the zirconium beads is 3nm, and then the sample after ball milling is sieved with a 500-mesh sieve to obtain particles Small size graphite phase carbon nitride with small size and uniform cut.

[0045] Step 3: Weigh 100 mg of small-sized graphitic carbon nitride, add 184 μL of phytic acid, 1104 μL of pyrrole, and 1 mL of isopropanol mixed solution, and then add the pre-configured ammonium persulfate solution drop by drop, and ultrasonically polymerize 10min. It was then washed three time...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of preparation of electrocatalytic oxygen reduction materials, and particularly relates to a preparation method of a tubular graphite phase carbon nitride oxygen reduction catalyst. The graphite-phase carbon nitride nanosheet is prepared based on a ball milling method, so that the particle size of the material can be remarkably reduced, and the specific surface area is increased; the gamma irradiation modified material can accelerate rapid migration of electrons on the surface of the carbon nitride, the conductivity of the graphite-phase carbon nitride is effectively improved, and the oxygen reduction reaction is efficiently carried out; meanwhile, gamma irradiation can effectively increase surface active sites of the carbon nitride material and promote improvement of oxygen reduction activity, and the preparation method is simple, convenient, environmentally friendly, free of pollution, capable of achieving large-scale production and universal. The tubular graphite-phase carbon nitride catalyst prepared by using the gamma irradiation method is small in Todert slope and fast in four-electron transfer path in the oxygen reduction reaction process, the performance of the tubular graphite-phase carbon nitride catalyst is far better than that of commercial platinum carbon and graphite-phase carbon nitride-based electrodes reported in existing literatures, and a reference thought can be provided for structural design of energy catalysts in the future.

Description

technical field [0001] The invention belongs to the technical field of preparation of electrocatalytic materials, in particular to a method for preparing a tubular graphite phase carbon nitride oxygen reduction electrocatalytic material. Background technique [0002] Currently, due to global warming and energy depletion, people are devoting themselves to developing various new energy sources. Fuel cells have attracted people's attention because of their environmental protection and low energy consumption. However, the development of fuel cells has the following problems: (1) The slow kinetics of cathode oxygen reduction reaction seriously restricts the development speed of fuel cells; (2) The current commercial cathode oxygen reduction catalysts are not only expensive, but also mostly chemically synthesized, which pollutes the environment and is not conducive to the development of fuel cells. eco friendly. Therefore, it is imminent to prepare oxygen reduction electrocataly...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01M4/90H01M4/92B82Y40/00H01M4/88B82Y30/00
CPCH01M4/90H01M4/9058H01M4/92H01M4/8825B82Y30/00B82Y40/00Y02E60/50
Inventor 王维时祥徐志伟刘梁森李楠石海婷买巍
Owner TIANJIN POLYTECHNIC UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com