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A kind of iron-doped copper sulfide nanosheet material with abundant defects and its preparation method and application

A technology of iron doping and nanosheets, which is applied in the field of nanomaterials, can solve the problems of slowness and restrict the development of hydrogen production energy technology by electrolysis of water, and achieve the effect of high purity, low production cost and good reproducibility

Active Publication Date: 2021-04-13
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of water splitting, its high electrocatalytic oxygen evolution reaction (OER) overpotential and slow kinetic reaction process seriously restrict the development of electrolytic water hydrogen production energy technology.

Method used

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  • A kind of iron-doped copper sulfide nanosheet material with abundant defects and its preparation method and application
  • A kind of iron-doped copper sulfide nanosheet material with abundant defects and its preparation method and application
  • A kind of iron-doped copper sulfide nanosheet material with abundant defects and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A method for self-assembling to form an iron-doped copper sulfide (Fe-CuS-0.025) nanosheet material with abundant defects, comprising the following steps:

[0042] S1: Dissolve 2mmol of copper chloride dihydrate in 10ml of absolute ethanol and stir vigorously to dissolve completely to form a uniform copper salt solution; 0.05mmol ferrous chloride tetrahydrate is vigorously stirred in 20mL of ethanol until completely dissolved to form a uniform ferrous salt solution;

[0043] S2: Vigorously stir 4 mmol of thiourea in 10 mL of ethanol until completely dissolved;

[0044] S3: Then, under vigorous stirring, the thiourea solution and the copper salt solution were rapidly mixed and stirred for 15 minutes to obtain a white flocculent intermediate solution;

[0045] S4: Under vigorous stirring, quickly mix the ferrous salt solution with the white flocculent intermediate solution obtained in step S3 and stir for 15 minutes, then transfer to a 60mL reaction kettle, tighten the l...

Embodiment 2

[0048] A method for self-assembling to form an iron-doped sulfur (Fe-CuS-0.033) copper nanosheet material with abundant defects, comprising the following steps:

[0049]S1: Dissolve 2mmol of copper chloride dihydrate in 10ml of absolute ethanol and stir vigorously to dissolve completely to form a uniform copper salt solution; 0.067mmol ferrous chloride tetrahydrate is vigorously stirred in 20mL of ethanol until completely dissolved to form a uniform ferrous salt solution;

[0050] S2: Vigorously stir 4 mmol of thiourea in 10 mL of ethanol until completely dissolved;

[0051] S3: Then, under vigorous stirring, the thiourea solution and the copper salt solution were rapidly mixed and stirred for 15 minutes to obtain a white flocculent intermediate solution;

[0052] S4: Under vigorous stirring, quickly mix the ferrous salt solution with the white flocculent intermediate solution obtained in step S3 and stir for 15 minutes, then transfer to a 60mL reaction kettle, tighten the li...

Embodiment 3

[0055] A method for self-assembling to form an iron-doped sulfur (Fe-CuS-0.05) copper nanosheet material with abundant defects, comprising the following steps:

[0056] S1: Dissolve 2mmol of copper chloride dihydrate in 10ml of absolute ethanol and stir vigorously to dissolve completely to form a uniform copper salt solution; 0.1mmol ferrous chloride tetrahydrate is vigorously stirred in 20mL of ethanol until completely dissolved to form a uniform ferrous salt solution;

[0057] S2: Vigorously stir 4 mmol of thiourea in 10 mL of ethanol until completely dissolved;

[0058] S3: Then, under vigorous stirring, the thiourea solution and the copper salt solution were rapidly mixed and stirred for 15 minutes to obtain a white flocculent intermediate solution;

[0059] S4: Under vigorous stirring, quickly mix the ferrous salt solution with the white flocculent intermediate solution obtained in step S3 and stir for 15 minutes, then transfer to a 60mL reaction kettle, tighten the lid ...

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Abstract

The invention discloses an iron-doped copper sulfide nanosheet material with abundant defects, a preparation method and application thereof. It includes the following steps: adding the copper salt solution to the thiourea solution, stirring the white floc solution quickly; mixing the ferrous salt solution with the white floc solution and stirring for 15 minutes, and then transferring the solution to the reaction It is obtained by hydrothermal reaction at 140°C-160°C for 12-15 hours in a kettle, centrifugation, washing and drying. The iron-doped copper sulfide nanosheet material with abundant defects is coated on the nickel foam, and as a working electrode material for electrolyzing water, it not only achieves long-term stability, but also has a large specific The surface area provides a larger active area for fast and efficient water electrolysis.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and in particular relates to an iron-doped copper sulfide nanosheet material with abundant defects, a preparation method and application thereof. Background technique [0002] The ever-increasing global energy demand, coupled with the depletion of fossil fuels and associated negative environmental impacts, is driving the pursuit and utilization and intensive research of various efficient, sustainable, and low-cost energy conversion and storage technologies. Photo / electrically driven water splitting to produce hydrogen and oxygen fuels is considered to be one of the most promising strategies to realize the conversion of solar / electrical energy into chemical energy, thereby overcoming the intermittency of sunlight and realizing solar energy storage. However, in the process of water splitting, its high electrocatalytic oxygen evolution reaction (OER) overpotential and slow kinetic reaction pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G3/12B82Y40/00C25B1/04C25B11/054C25B11/052C25B11/061C25B11/091
CPCB82Y40/00C01G3/12C01P2002/72C01P2004/03C01P2004/04C25B1/04C25B11/04Y02E60/36
Inventor 张小俊陈静
Owner ANHUI NORMAL UNIV
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