A cobalt-doped tin disulfide nanosheet array material and its preparation method and application
A nanosheet array and tin disulfide technology, applied in the field of nanomaterials, can solve the problems of inability to achieve catalytic performance, impact on the environment and resources, and cumbersome preparation methods, and achieve improved electrochemical catalytic performance, low production costs, and high product purity Effect
Active Publication Date: 2021-03-16
ANHUI NORMAL UNIV
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Problems solved by technology
[0003] However, the catalytic activity of traditional catalysts for electrolysis of water is low, and most of the preparation methods are cumbersome, which cannot achieve good catalytic performance and have a negative impact on the environment and resources.
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Embodiment 1
[0034] A preparation method of a cobalt-doped tin disulfide nanosheet array material, comprising the following steps:
[0035] S1: Put the carbon fiber into hydrochloric acid, ethanol and double distilled water in sequence and perform ultrasonic cleaning for 15 minutes respectively; that's it;
[0036] S2: add 2mmol SnCl 4 ·5H 2 O. 8mmol thioacetamide was dissolved in 40mL isopropanol, and different amounts of Co(NO 3 ) 2 ·6H 2 0 and continue to stir for 30min to obtain a mixed solution. The ratio of the amount of Co to Sn is represented by x, and x is respectively 0, 0.05, 0.15 and 0.25 in this example. Pour the obtained mixed solutions with different cobalt contents into the reaction kettle respectively, immerse the carbon fiber treated by S1 in the mixed solution, tighten the lid of the kettle to seal, react at 180°C for 24h, take out the reaction kettle and cool it to room temperature naturally, and wash with ethanol respectively Rinse with double distilled water, dry...
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Abstract
The present invention provides a cobalt-doped tin disulfide nanosheet array material and its preparation method and application. Compared with the existing technology, the present invention uses isopropyl alcohol as the reaction solvent in a sealed high-temperature and high-pressure reaction kettle. Add tin source, sulfur source and cobalt salt in proportions and mix them evenly. By heating the reaction system, a high-pressure environment is generated to prepare cobalt-doped SnS. 2 Nanosheet array materials. On the one hand, the two-dimensional nanosheet structure increases the overall surface area of the material, and the small particles of SnS attached to the surface of the nanosheets 2 It can provide more active sites, which is more conducive to the transfer and transmission of electrons, giving the material better electrochemical catalytic response and stability; on the other hand, using carbon fiber as a substrate has good conductivity and can be directly used as a flexible material. electrode material and will not affect the electrode reaction. Therefore, carbon fiber was selected as the substrate for hydrothermal synthesis, and a two-dimensional structure was grown on its surface and directly used as a catalyst for the oxygen evolution reaction.
Description
technical field [0001] The invention belongs to the technical field of nanomaterials, and in particular relates to a cobalt-doped tin disulfide nanosheet array material and a preparation method and application thereof. Background technique [0002] With the increasing energy crisis, it is urgent to replace fossil fuels with new clean fuels. This has prompted intensive research into various types of clean and sustainable energy conversion and storage technologies. Water splitting has attracted interest as an efficient means of energy conversion. Hydrogen and oxygen produced by water splitting are widely regarded as sustainable and sufficient energy carriers, capable of solving current energy energy problems due to high energy density and carbon-free storage upon release. [0003] However, the catalytic activity of traditional catalysts for electrolysis of water is low, and most of the preparation methods are cumbersome, which cannot achieve good catalytic performance and ha...
Claims
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IPC IPC(8): B01J27/043B01J35/02B01J35/10C25B1/04C25B11/091B01J35/00
CPCC25B1/04C25B11/04B01J27/043B01J35/33B01J35/40B01J35/61Y02E60/36
Inventor 张小俊蒋美文
Owner ANHUI NORMAL UNIV