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Synthetic method of cobalt disulfide nanoribbon assembled structure on titanium substrate

A technology of cobalt disulfide and assembly structure, which is applied in chemical instruments and methods, electrolytic components, chemical/physical processes, etc., can solve the problem that the catalytic hydrogen production performance of pure phase cobalt disulfide cannot be further improved, the product is not uniform, and the In order to achieve the effect of promoting charge transfer, lowering the reaction barrier, and strong controllability

Inactive Publication Date: 2017-07-28
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The morphology of cobalt disulfide grown on conductive substrates includes nanowires, nanosheets, triangular pyramids, etc. However, since the catalytic hydrogen production performance of pure phase cobalt disulfide cannot be further improved, most work relies on cobalt disulfide. Doping or synthesizing bimetallic sulfide composite materials leads to a cumbersome process for preparing materials, poor controllability, and uneven products

Method used

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  • Synthetic method of cobalt disulfide nanoribbon assembled structure on titanium substrate
  • Synthetic method of cobalt disulfide nanoribbon assembled structure on titanium substrate
  • Synthetic method of cobalt disulfide nanoribbon assembled structure on titanium substrate

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Co(OH) on titanium substrate 3 Synthesis of nanoribbons

[0032] Weigh 0.0065g cobalt dichloride hexahydrate and 0.0125g cetyltrimethylammonium chloride (CTAC), dissolve in 5mL water and 5mL N, N-dimethylformamide (DMF) mixed solution, gradually Add 2mL of hydrogen peroxide (30%) solution dropwise, transfer to a 50mL reaction kettle, put in the treated clean bare titanium sheet, package, place it at 150°C for 1 hour, take out the titanium sheet, and rinse with ethanol and deionized water in turn Clean, dry at 60°C to get self-assembled Co(OH) 3nanobelt. The samples obtained were figure 1 As shown in (a), the scanning electron microscope shows that when the reaction time is 1h, the surface of the titanium substrate is a dendritic material, which has not yet grown into a nanoribbon morphology, indicating that Co(OH) 3 Indeed, in situ nucleation occurs on the surface of the titanium substrate and in situ growth begins.

Embodiment 2

[0034] Co(OH) on titanium substrate 3 Synthesis of nanoribbons

[0035] Weigh 0.0065g cobalt dichloride hexahydrate and 0.0125g cetyltrimethylammonium chloride (CTAC), dissolve in 5mL water and 5mL N, N-dimethylformamide (DMF) mixed solution, gradually Add 2mL of hydrogen peroxide (30%) solution dropwise, transfer to a 50mL reactor, put in the treated clean bare titanium sheet, package, place it at 150°C for 5 hours, take out the titanium sheet, and rinse with ethanol and deionized water in turn Clean, dry at 60°C to get self-assembled Co(OH) 3 nanobelt. The samples obtained were figure 1 As shown in (b), the scanning electron microscope shows that when the reaction time is 5h, Co(OH) with a length of about 3 microns and a width of about 1 micron has appeared on the surface of the titanium substrate. 3 Nanobelts, illustrating Co(OH) 3 It has grown from dendrites in 1h to the morphology of small nanoribbons.

Embodiment 3

[0037] Co(OH) on titanium substrate 3 Synthesis of nanoribbons

[0038] Weigh 0.0065g cobalt dichloride hexahydrate and 0.0125g cetyltrimethylammonium chloride (CTAC), dissolve in 5mL water and 5mL N, N-dimethylformamide (DMF) mixed solution, gradually Add 2mL of hydrogen peroxide (30%) solution dropwise, transfer to a 50mL reaction kettle, put in the treated clean bare titanium sheet, package, place it at 150°C for 10 hours, take out the titanium sheet, and rinse with ethanol and deionized water in turn Clean, dry at 60°C to get self-assembled Co(OH) 3 nanobelt. The samples obtained were figure 1 As shown in (c), SEM shows that when the reaction time is 10h, Co(OH) 3 The nanobelts have been evenly distributed on the surface of the titanium substrate, the structure is stable, and the substrate is covered with the substrate, and the size has further increased compared with 5h.

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Abstract

The invention relates to a synthetic method of a cobalt disulfide nanoribbon assembled structure on a titanium substrate; the method comprises: synthesizing cobalt hydroxide nanoribbons on the titanium substrate, preparing cobalt(II,III) oxide nanoribbons on the titanium substrate, preparing cobalt disulfide nanoribbons on the titanium substrate, and performing other steps to obtain the cobalt disulfide nanoribbon assembled structure on the titanium substrate. Compared with the prior art, the method is simple and feasible and good in repeatability, the obtained cobalt disulfide nanoribbons have novel appearance and are distributed evenly on the surface of the titanium substrate, the structure is stable, the structure is in firm contact with the titanium substrate, and electron transport and interfacial reaction are facilitated. The cobalt disulfide nanoribbon assembled structure may be used directly as a two-dimensional material, is widely applicable to the field of electrolytic catalysis and has excellent performance in hydrogen production by water hydrolysis.

Description

technical field [0001] The invention relates to a synthesis method of a hydrogen production catalyst, in particular to a synthesis method of a cobalt disulfide nanobelt assembly structure on a titanium sheet substrate. Background technique [0002] Hydrogen energy is an emerging renewable energy, and its development technology is constantly developing along with the research and development of hydrogen production catalyst materials. Therefore, the development of hydrogen-producing electrode materials with high-efficiency catalytic performance, low cost, and no pollution has become a hot spot in the field of hydrogen energy. Due to their large specific surface area and surface activity, nano electrode materials have shown good electrochemical application value in the field of electrocatalytic hydrogen production. At present, platinum group noble metal materials are the most efficient electrocatalytic hydrogen production materials known, but their application range is limited...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/043C25B1/04
CPCC25B1/04B01J27/043B01J35/40Y02E60/36
Inventor 杨金虎刘光磊张棪贺婷冯楠
Owner TONGJI UNIV
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