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A fept@c composite nanomaterial based on mof and its application

A technology of composite nanomaterials and composite materials, which is applied in the field of electrocatalytic fuel cell preparation, can solve problems such as weak conductivity, and achieve the effects of improving conductivity, improving catalytic stability, and improving performance

Active Publication Date: 2022-04-12
FUZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, MOFs are less conductive and are rarely used in electrocatalysis.

Method used

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  • A fept@c composite nanomaterial based on mof and its application
  • A fept@c composite nanomaterial based on mof and its application
  • A fept@c composite nanomaterial based on mof and its application

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Experimental program
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Effect test

Embodiment

[0027] (1) Weigh 0.675 g of ferric chloride (2.45 mmol) and 0.206 g of terephthalic acid (1.24 mmol), dissolve them in 15 mL of N,N-dimethylformamide, and sonicate for 15 min to make them completely Dissolve; then transfer the fully dissolved reactant to a 25 mL polytetrafluoroethylene reactor, raise the temperature of the muffle furnace to 110 °C, and react for 20 h; after the autoclave is cooled to room temperature, the reaction product is centrifugally filtered , washed with DMF and absolute ethanol for three times, and finally dried under vacuum at 70° C. overnight to obtain MIL-101(Fe).

[0028] (2) Mix 0.3 g of MIL-101(Fe) prepared in step (1) with 0.0498 g of PVP and 135 mL of absolute ethanol, and add 7.0 mL of 0.016 g / L chloroplatinic acid solution drop by drop , after stirring for 30 min, heated to reflux at 100 °C for 3 h under continuous stirring to synthesize Pt@MIL-101(Fe) composites.

[0029] (3) The Pt@MIL-101(Fe) composite material prepared in step (2) was gr...

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Abstract

The invention discloses a FePt@C composite nanomaterial prepared based on MOF and its application in preparing an electrocatalytic fuel cell. The composite nanomaterial uses three-dimensional MIL-101(Fe) as a carrier, reduces chloroplatinic acid into Pt nanoparticles by heating and refluxing, and encapsulates them in the prepared MIL-101(Fe) cavity, and then heats and reflows at high temperature. The FePt@C composites were obtained by solution. The invention forms alloy nanoparticles with Pt and Fe, and the synergistic effect between the two can promote the change of electronic structure, enhance the affinity of FePt to HCOOH, and can form surface oxide at a very low potential, and its formic acid oxidation performance is obvious. It is higher than commercial Pt / C, and the preparation method of the present invention is simple, effectively solves the problems of poor conductivity of MOF and high cost of Pt-based catalyst, and provides a new direction for the preparation and electrocatalytic application of other MOF-derived metal carbon materials.

Description

technical field [0001] The invention belongs to the field of electrocatalytic fuel cell preparation, and in particular relates to a FePt@C composite nanomaterial prepared based on MOF, a preparation method thereof, and an application in electrocatalytic formic acid oxidation. Background technique [0002] In recent years, the issue of energy and development has become the focus of attention of all countries. Due to the current situation of my country's energy consumption structure, the extensive use of fossil fuels has caused a series of environmental problems. In response to the concept of green development, there is an urgent need to develop renewable, safe, clean, efficient and sustainable energy sources and related energy storage technologies. Environmentally friendly and efficient electrochemical redox technologies have attracted much attention. Among them, direct formic acid or methanol fuel cells have high conversion efficiency, good safety performance, and zero poll...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/92H01M4/86B82Y40/00B82Y30/00
CPCH01M4/921H01M4/926H01M4/8663B82Y30/00B82Y40/00Y02E60/50
Inventor 汤儆李茜蔡娇锋
Owner FUZHOU UNIV
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