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A flower-like porous co 3 o 4 Loaded pt particle nanomaterial and its preparation method and application

A nano-material and flower-like technology, which is applied in the field of Pt-based electrolytic water materials, can solve problems such as performance that cannot meet the demand, and achieve excellent structural characteristics, simple and easy process, and broad application prospects

Active Publication Date: 2022-05-03
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The currently developed electrolytic water catalysts mainly include metal alloys, transition metal sulfides, carbides, nitrides, selenides, oxides, phosphides, and heteroatom-doped carbons, etc., but their performance still cannot meet the needs.

Method used

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  • A flower-like porous co <sub>3</sub> o <sub>4</sub> Loaded pt particle nanomaterial and its preparation method and application
  • A flower-like porous co <sub>3</sub> o <sub>4</sub> Loaded pt particle nanomaterial and its preparation method and application
  • A flower-like porous co <sub>3</sub> o <sub>4</sub> Loaded pt particle nanomaterial and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0035] A flower-like porous Co 3 o 4 Loading Pt particle nanometer material preparation method, comprises the following steps:

[0036] 1) Synthesis of flower-like PtCo Hoffmann complex: prepare a mixed solution (water:methanol volume ratio = 1:1), 0.1mmol pyrazine and 0.1mmol K 2 [Pt(CN)] 4 Dissolved in 35mL mixed solution and recorded as solution A, 0.1mmol Co(NO 3 ) 2 Dissolved in 35mL of mixed solution and recorded as solution B, solution B was slowly added dropwise to A, stirred for 1 hour, centrifuged and dried to obtain flesh pink powder, flower-shaped PtCo Hoffmann complex;

[0037] 2) Preparation of flower-like porous Co 3 o 4 Pt particle-loaded nanomaterials: heat-treat the flesh pink powder prepared in step 1) to 400°C at 1°C / min in an oxygen atmosphere, keep at this temperature for 1h, and then cool to obtain the final product.

Embodiment 2

[0039] A flower-like porous Co 3 o 4 Loading Pt particle nanometer material preparation method, comprises the following steps:

[0040] 1) Synthesis of flower-like PtCo Hoffmann complex: prepare a mixed solution (water:methanol volume ratio = 1:1), 0.1mmol pyrazine and 0.1mmol K 2 [Pt(CN)] 4 Dissolved in 25mL mixed solution and recorded as solution A, 0.1mmol Co(NO 3 ) 2 Dissolved in 25mL of mixed solution and recorded as solution B, solution B was slowly added dropwise to A, stirred for 1 hour, centrifuged and dried to obtain flesh pink powder, namely flower-shaped PtCo Hoffmann complex;

[0041] 2) Preparation of flower-like porous Co 3 o 4 Pt particle-loaded nanomaterials: heat-treat the flesh pink powder prepared in step 1) to 400°C at 1°C / min in an oxygen atmosphere, keep at this temperature for 1h, and then cool to obtain the final product.

Embodiment 3

[0043] A flower-like porous Co 3 o 4 Loading Pt particle nanometer material preparation method, comprises the following steps:

[0044] 1) Synthesis of flower-like PtCo Hoffmann complex: prepare a mixed solution (water: methanol volume ratio = 1:1), 0.1 mmol pyrazine and 1 mmol K 2 [Pt(CN)] 4 Dissolved in 35mL mixed solution and recorded as solution A, 1mmol Co(NO 3 ) 2 Dissolved in 35mL mixed solution and recorded as solution B, solution B was slowly added dropwise to A, stirred for 1h, and centrifuged to dry to obtain flesh pink powder, namely flower-shaped PtCo Hoffmann complex;

[0045] 2) Preparation of flower-like porous Co 3 o 4 Pt particle-loaded nanomaterials: heat-treat the flesh pink powder prepared in step 1) to 400°C at 1°C / min in an oxygen atmosphere, keep at this temperature for 1h, and then cool to obtain the final product.

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Abstract

The invention discloses a flower-like porous Co 3 o 4 Loaded Pt particle nanomaterial and its preparation method and its application as electrolytic water catalyst, the method comprises utilizing pyrazine (C 4 h 4 N 2 ) as a coordination molecule, forms a complex precipitate with Pt salt and Co salt, and after drying, heats up and calcines and oxidizes under an oxygen atmosphere to obtain the flower-like porous Co 3 o 4 Loaded Pt particle nanomaterials. The preparation method of the invention is simple and easy, the raw material cost is low, and large-scale production can be realized. In the obtained nanomaterials, Pt acts as the HER active center, and Co 3 o 4 As an OER active center, it has a synergistic effect with Pt to promote the dissociation of water, and it exhibits excellent catalytic activity and stability as an electrolytic water catalyst.

Description

technical field [0001] The invention relates to a flower-like porous Co 3 o 4 The nano material loaded with Pt particles, its preparation method and its application as an electrolytic water catalyst belong to the technical field of Pt-based electrolytic water materials. Background technique [0002] Energy crisis and environmental pollution are two major problems that human beings must face at present. The development of new technologies and new energy sources is the key to solving these two problems, and it is also a research hotspot in the field of scientific research, such as solar energy, wind energy, biomass energy, etc. New energy emerges as the times require, among which hydrogen energy, as an efficient and clean renewable energy, is considered to be the most promising new energy carrier in the future. Among many hydrogen production methods, hydrogen production by electrolysis of water stands out because of its advantages of high efficiency, greenness, environmental...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/89B01J37/03B01J37/08B01J35/10B01J35/02B01J37/14B82Y30/00B82Y40/00C25B1/04C25B11/093B22F9/20B22F1/00B01J35/00
CPCB01J23/8913B01J37/031B01J37/086B01J37/0018B01J37/14B82Y30/00B82Y40/00C25B1/04B22F9/20C25B11/091B22F1/07B01J35/33B01J35/00B01J35/30B01J35/61Y02E60/36
Inventor 徐林顾敏怡贾清扬朱彦博唐亚文
Owner NANJING NORMAL UNIVERSITY
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