Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Catalyst with Pd-Co nano-alloy loaded on TiO2 containing oxygen vacancies and preparation method and application of catalyst

A nano-alloy, tio2-vo technology, applied in nanotechnology, nanotechnology, nanotechnology and other directions for materials and surface science, can solve the problems of slow reaction, poor stability of oxygen reduction reaction, low activity, etc., and achieve low cost , good development potential, simple preparation process

Inactive Publication Date: 2021-07-02
ZHEJIANG UNIV OF TECH
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the main cathodic reaction of a fuel cell is the oxygen reduction reaction (ORR), which is a sluggish reaction
The key bottleneck of using Pd catalysts in fuel cells is their low activity and poor stability of oxygen reduction reaction (ORR)

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
  • Catalyst with Pd-Co nano-alloy loaded on TiO2 containing oxygen vacancies and preparation method and application of catalyst
  • Catalyst with Pd-Co nano-alloy loaded on TiO2 containing oxygen vacancies and preparation method and application of catalyst
  • Catalyst with Pd-Co nano-alloy loaded on TiO2 containing oxygen vacancies and preparation method and application of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A TiO with oxygen vacancies 2 Loading Pd-Co nano-alloy catalyst (Pd-Co total loading 6 wt%), comprising the following steps:

[0037] 1) Measure 1.0 mL TiCl 4 liquid, under a magnetic stirrer, the TiCl 4 The liquid was added dropwise to 30 mL of EG (ethylene glycol), and after about 10 minutes, when no HCl gas was released, 1 mL of distilled water was added to the solution mixture, and stirred for 3 hours until a uniform light yellow solution was obtained. The above homogeneous light yellow solution was transferred to a 50 mL polytetrafluoroethylene-lined stainless steel autoclave, and heated at 150 °C for 4 h. After the reaction was finished, cool to room temperature, separate the white precipitate by centrifugation, wash fully five times with a mixture of water and ethanol (the volume ratio of water and ethanol is 7:3), and then dry the sample overnight in a vacuum oven at 80°C. Obtain catalyst precursor TiO 2 (B) Nanosheets.

[0038] 2) The TiO prepared in step ...

Embodiment 2

[0041] A TiO with oxygen vacancies 2 Loading Pd-Co nano-alloy catalyst (Pd-Co total load 10 wt%), comprising the following steps:

[0042] 1) Measure 1.0 mL TiCl 4 liquid, under a magnetic stirrer, the TiCl 4 The liquid was added dropwise to 30 mL of EG (ethylene glycol), and after about 10 minutes, when no HCl gas was released, 1 mL of distilled water was added to the solution mixture, and stirred for 3 hours until a uniform light yellow solution was obtained. The above homogeneous light yellow solution was transferred to a 50 mL polytetrafluoroethylene-lined stainless steel autoclave, and heated at 150 °C for 4 h. After the reaction was finished, cool to room temperature, separate the white precipitate by centrifugation, wash fully five times with a mixture of water and ethanol (the volume ratio of water and ethanol is 7:3), and then dry the sample overnight in a vacuum oven at 80°C. Obtain catalyst precursor TiO 2 (B) Nanosheets.

[0043] 2) The TiO prepared in step 1)...

Embodiment 3

[0046] A TiO with oxygen vacancies 2 Loading Pd-Co nano-alloy catalyst (Pd-Co total loading 13 wt%), comprising the following steps:

[0047] 1) Measure 1.0 mL TiCl 4 liquid, under a magnetic stirrer, the TiCl 4 The liquid was added dropwise to 30 mL of EG (ethylene glycol), and after about 10 minutes, when no HCl gas was released, 1 mL of distilled water was added to the solution mixture, and stirred for 3 hours until a uniform light yellow solution was obtained. The above homogeneous light yellow solution was transferred to a 50 mL polytetrafluoroethylene-lined stainless steel autoclave, and heated at 150 °C for 4 h. After the reaction was finished, cool to room temperature, separate the white precipitate by centrifugation, wash fully five times with a mixture of water and ethanol (the volume ratio of water and ethanol is 7:3), and then dry the sample overnight in a vacuum oven at 80°C. Obtain catalyst precursor TiO 2 (B) Nanosheets.

[0048] 2) The TiO prepared in step...

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

No PUM Login to View More

Abstract

The invention discloses a catalyst with Pd-Co nano-alloy loaded on TiO2 containing oxygen vacancies and a preparation method and application thereof, the catalyst is composed of a carrier and an active component loaded on the carrier, the carrier is TiO2 containing oxygen vacancies on the surface, the active component is Pd-Co nano-alloy, and the total loading amount of the Pd-Co nano-alloy is 6-15 wt%, preferably 13 wt%; the mass ratio of the metal Pd to the metal Co is 5: 1-5: 10, preferably 5: 8. The preparation method of the catalyst is simple, green and environment-friendly, the Pd-Co nano-alloy active components of the prepared catalyst are uniformly distributed on the TiO2 carrier containing oxygen vacancies, and the catalyst shows good oxygen reduction characteristics and has wide application prospects.

Description

technical field [0001] The invention belongs to the technical field of material preparation, in particular to a TiO2 containing oxygen vacancies 2 On-loaded Pd-Co nano-alloy catalyst and its preparation method and application. Background technique [0002] Fuel cells have attracted considerable attention as energy conversion and energy storage devices due to their low emissions and high efficiency. However, the main cathodic reaction of a fuel cell is the oxygen reduction reaction (ORR), which is a sluggish reaction. The key bottleneck of using Pd catalysts in fuel cells is their low activity and poor stability of oxygen reduction reaction (ORR). Therefore, new strategies need to be developed to enhance the performance of Pd in ​​ORR. [0003] At present, there are two ways to improve the ORR activity of supported Pd catalysts, including alloying Pd and modifying the support. Alloying Pd with 3d transition metals (such as Co, Fe, Au, Cu, Ni, and W) has become an effectiv...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/92B82Y40/00B82Y30/00
CPCH01M4/921H01M4/925B82Y30/00B82Y40/00Y02E60/50
Inventor 邓声威张静王建国张世杰
Owner ZHEJIANG UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com