Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of nanosheets and precursors is applied in the field of preparation of FeS nanosheets to achieve the effects of uniform morphology, safe preparation and low production cost
Inactive Publication Date: 2016-02-10
NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
View PDF3 Cites 12 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
However, most of the methods currently used are oil-phase methods, so often need to use a lot of toxic organic solvents
[0004] The hydrothermal method, as a method using water as the reaction medium, is applied to the synt
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
preparation example Construction
[0023] A preparation method of FeS nanosheets, comprising the following steps:
[0024] Step 1, dissolving the iron-containing precursor, the sulfur-containing precursor and a surfactant in water to prepare a solution, the surfactant being cetyltrimethylammonium bromide;
[0025] Step 2. Transfer the solution prepared in Step 1 to a reaction kettle and heat it. After the reaction is complete, centrifuge and wash the sample with water and alcohol to prepare FeS nanosheets.
[0026] Wherein, in step 1, the iron-containing precursor is ferrous chloride, ferrous acetate or ferrous sulfate; the sulfur-containing precursor is thiourea, thioacetamide, sodium sulfide, cysteine or reduced glutathione . The molar ratio of the iron-containing precursor to the sulfur-containing precursor is 1:1 to 1:12; the molar ratio of the iron-containing precursor to the surfactant is 1:0.1 to 1:2.
[0027] In step 2, the reaction temperature is 120°C to 240°C; the reaction time is 1h to 18h.
[...
Embodiment 1
[0031] Step 1, 1mmol ferrous acetate, 1mmol thioacetamide, 0.1mmol cetyltrimethylammonium bromide (CTAB) are dissolved in 80ml water to obtain a solution;
[0032] Step 2. Transfer the solution prepared in Step 1 to a reactor for heating, control the reaction temperature to 120° C., react for 1 hour, centrifuge, wash the sample with water and alcohol, and prepare FeS nanosheets.
Embodiment 2
[0034] Step 1, 1mmol ferrous chloride, 10mmol cysteine, 0.5mmol cetyltrimethylammonium bromide (CTAB) are dissolved in 80ml water to obtain a solution;
[0035] Step 2. Transfer the solution prepared in Step 1 to a reactor for heating, control the reaction temperature to 160° C., react for 6 hours, centrifuge, wash the sample with water and alcohol, and prepare FeS nanosheets.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Property
Measurement
Unit
Thickness
aaaaa
aaaaa
Login to view more
Abstract
The invention discloses a FeS nanosheet preparing method. The method comprises the steps of 1, dissolving an iron-containing precursor, a sulfur-containing precursor and a surface active agent in water to obtain a solution, wherein the surface active agent is hexadecyl trimethyl ammonium bromide; 2, transferring the solution obtained in the step 1 into a reaction still to be heated, conducting centrifugation after complete reaction, washing a sample with water and ethyl alcohol, and then obtaining a FeS nanosheet. According to the method, the technology is simple, production cost is low, and the prepared FeS nanosheets have a uniform shape and a thickness of about 3 nm and are suitable for directly preparing a lithium battery electrode material; during preparation, water serves as the solvent, preparation is safe, cost is low, and application and popularization are facilitated.
Description
technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a preparation method of FeS nanosheets. Background technique [0002] FeS, also known as pyrrhotite, has a scaly structure similar to molybdenum disulfide and graphene. It is a diamagnetic semiconductor material and has been widely used as a solid lubricant, lithium battery electrode material, etc. [0003] The preparation of ultrathin semiconductor nanosheets by solution method is one of the most important research frontiers in material science, and a lot of research has been done at home and abroad. However, most of the methods currently used are oil-phase methods, so a lot of toxic organic solvents are often used. [0004] The hydrothermal method, as a method using water as the reaction medium, is applied to the synthesis of various inorganic semiconductor nanomaterials, which has the advantages of high safety, but so far, there is no literature on the synthesis of ult...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more