Preparation method of non-integer ratio graphene selenium cobalt nano sheet

A cobalt selenide nanometer and non-integer ratio technology, which is applied in nanotechnology, binary selenium/tellurium compounds, chemical industry, etc., can solve the problems of cobalt selenide synthesis and less application, and achieve small product particles, thin thickness, The effect of large specific surface area

Inactive Publication Date: 2011-06-01
ANHUI UNIVERSITY
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  • Preparation method of non-integer ratio graphene selenium cobalt nano sheet
  • Preparation method of non-integer ratio graphene selenium cobalt nano sheet
  • Preparation method of non-integer ratio graphene selenium cobalt nano sheet

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Embodiment 1

[0023] Embodiment 1: Preparation of cobalt selenide nanosheets under different conditions:

[0024] This step is the stage of exploring conditions for preparing the product cobalt selenide nanosheets. (1) Add 0.1455 grams of cobalt nitrate hexahydrate and 0.0866 grams of sodium selenite to 25 milliliters of autoclaves with Teflon linings, then add 20 milliliters of ethylene glycol, stir for 20 minutes, and seal the reaction The kettle was put into a digital display temperature-controlled furnace, and reacted at 140, 160, 180, and 200 degrees Celsius for 24 hours. (2) Add 0.1455 grams of cobalt nitrate hexahydrate and 0.0866 grams of sodium selenite to 25 milliliters of autoclaves with Teflon linings, then add 20 milliliters of ethylene glycol, stir for 20 minutes, and seal the reaction The kettle was put into a digital display temperature-controlled furnace, and reacted at 180 degrees Celsius for 12, 24, and 48 hours respectively. (3) Add 0.1268 gram of cobalt nitrate hexahy...

Embodiment 2

[0030] Embodiment 2: Preparation of cobalt selenide nanosheets:

[0031] Add 0.1455 grams of cobalt nitrate hexahydrate and 0.0866 grams of sodium selenite to 25 milliliters of autoclaves with polytetrafluoroethylene linings, then add 20 milliliters of ethylene glycol, stir for 20 minutes, seal the reaction vessel, and put Put it into a digital display temperature-controlled furnace, and react at 180 degrees Celsius for 24 hours. The obtained product was washed with distilled water and ethanol several times and then dried for characterization and testing.

[0032] The phase of the sample was characterized by Philips X'Pert PRO SUPER X-ray diffractometer (XRD), the morphology of the sample was characterized by the Hitachi scanning microscope S4800 in Japan, and the nature of the organic dye adsorption of the sample was tested by Shimadzu-3600 The specific surface area and micropore distribution of the samples were analyzed by a fully automatic microporous physical adsorption a...

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Abstract

The invention provides a preparation method of a non-integer ratio graphene selenium cobalt nano sheet, belonging to the technical field of nano material preparation. The preparation method is characterized by comprising the following steps of: adding 0.1455g of cobaltous nitrate hexahydrate and 0.0866g of sodium selenite into a 25ml high-pressure reactor with a polytetrafluoroethylene liner, adding 20ml of ethylene glycol, stirring for 20min, closing the reactor, placing in a digital display temperature control furnace, and reacting for 24h at a temperature of 180 DEG C. A sample obtained with the preparation method is subjected to centrifugal washing three times and then dried to obtain a product. An organic template and a surfactant are not used in the invention, and the non-integer ratio graphene selenium cobalt nano sheet is synthesized with high yield,and is thin. The method has the advantages of simple preparation process and energy saving and is suitable for the industrialized production. The obtained non-integer ratio graphene selenium cobalt nano sheet has large specific surface area and strong adsorptive capacity to organic dye.

Description

Technical field: [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a method for preparing cobalt selenide nanosheets—a novel non-integer ratio selenide nanomaterial—by a solvothermal method. Background technique: [0002] Existing methods for preparing cobalt selenide nanostructure materials include microwave method, vapor deposition method, hydrothermal / solvothermal method, magnetic field induction method, mechanical ball milling method and the like. [0003] "Bulletin of Chemical Society of Japan" (Bulletin of Chemical Society of Japan, 1992, volume 65, pages 329-333) reported that the inner layer was Co 3 Se 4 The outer layer is CoSe 2 double-layer membrane. Holland Elsevier "International Journal of Hydrogen Energy" (International Journal of Hydrogen Energy, 2010, volume 35, pages 6392-6398) reported the microwave-assisted synthesis of CoSe nanoparticles, the article did not give electron microscope photos, a...

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Application Information

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IPC IPC(8): C01B19/04B82Y40/00
CPCY02P20/10
Inventor 宋吉明赵京凤刘程成张胜义牛和林毛昌杰沈玉华
Owner ANHUI UNIVERSITY
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