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Hydrothermal synthesis method for producing Nano sheet material of stannous oxide

A stannous oxide, hydrothermal synthesis technology, applied in the direction of tin oxide, etc., can solve the problem of not being able to obtain stannous oxide nanomaterials

Inactive Publication Date: 2008-07-16
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As an important wet chemical method, the hydrothermal synthesis method has the characteristics of simple equipment and operation, good product crystallization, less environmental pollution and suitable for large-scale production. Or ammonia water is the mineralizer, and the metastable stannous oxide is easily oxidized in the hydrothermal process, so that the stannous oxide nanomaterial cannot be obtained
Therefore, there are still few reports on the hydrothermal synthesis of metastable stannous oxide nanomaterials.

Method used

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  • Hydrothermal synthesis method for producing Nano sheet material of stannous oxide
  • Hydrothermal synthesis method for producing Nano sheet material of stannous oxide
  • Hydrothermal synthesis method for producing Nano sheet material of stannous oxide

Examples

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Effect test

Embodiment 1

[0020] 0.90 g of stannous chloride (SnCl 2 2H 2 (0) be dissolved in 100 milliliters of mass concentration and be in the polyethylene glycol solution of 5%, stannous chloride molar concentration 0.04 mol / liter, after stirring for 5 minutes, add 2.35 gram concentration again and be 85% hydrazine hydrate (N 2 h 4 ·H 2 (0), the hydrazine hydrate molar concentration is 0.4 mol / liter, and after stirring for 5 minutes, the above-mentioned prepared solution is put into the polytetrafluoroethylene lining of the autoclave, and the lining volume is 120 milliliters. The solution is treated at 120° C. for 10 hours, and the treated solution is centrifuged and dried to obtain a stannous oxide nanosheet structure with a thickness of about 15 nanometers, and the width of the flakes is about 100-300 nanometers. figure 1 It is the XRD pattern of the SnO nanoflakes, which is completely consistent with the standard card of SnO (JCPDS no.06-0395). There are no peaks of impurities such as tin oxi...

Embodiment 2

[0022] 0.90 g of stannous chloride (SnCl 2 2H 2 O) being dissolved in 100 milliliters of citric acid solution with molar concentration of 0.01 mol / liter, stannous chloride molar concentration of 0.04 mol / liter. After stirring for 5 minutes, adding 0.94 gram of concentration is 85% hydrazine hydrate (N 2 h 4 ·H 2 (0), the hydrazine hydrate molar concentration is 0.16 mol / liter, after stirring for 5 minutes, the above-mentioned prepared solution is put into the polytetrafluoroethylene inner lining of autoclave, and inner lining volume is 120 milliliters. The solution was treated at 120° C. for 18 hours, and the treated solution was centrifuged and dried to obtain a stannous oxide nanoflake structure with a thickness of about 30 nanometers, and the width of the flakes was smaller than that of the product obtained in Example 1. image 3 It is the XRD pattern of the SnO nanoflakes, which is completely consistent with the standard card of SnO (JCPDS no.06-0395). There are no pea...

Embodiment 3

[0024] 2.26 grams of stannous chloride (SnCl 2 2H 2 O) be dissolved in 100 milliliters of molar concentrations and be 0.025 mol / litre in the citric acid solution, tin protochloride molar concentration 0.10 mol / litre, stir after 5 minutes, then add 4.7 gram concentrations and be 85% hydrazine hydrate (N 2 h 4 ·H 2 (0), the hydrazine hydrate molar concentration is 0.80 mol / liter, and after stirring for 5 minutes, the above-mentioned prepared solution is put into the polytetrafluoroethylene lining of the autoclave, and the lining volume is 120 milliliters. The solution was treated at 150° C. for 24 hours, and the treated solution was centrifuged and dried to obtain a stannous oxide nanosheet structure with a thickness of about 30 nanometers. Figure 5 It is the XRD pattern of the SnO nanoflakes, which is completely consistent with the standard card of SnO (JCPDS no.06-0395). There are no peaks of impurities such as tin oxide in the figure, indicating that the product is pure s...

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Abstract

This invention discloses a hydrothermal method for synthesizing stannous oxide nanomaterial. The method comprises: (1) dissolving stannous chloride in citric acid or polyethylene glycol, controlling the mol concentration of stannous chloride, and stirring; (2) adding 4-10 mol times of hydrazine hydrate, and continuing stirring; (3) filling 80-90% of a pressure kettle with the solution, and treating at 120-150 deg.C for 10-24 h; (4) centrifuging the treated solution, and drying to obtain stannous oxide sheets. Hydrazine hydrate is adopted, by replacing sodium hydroxide or ammonia solution, as an alkali mineralizing agent. Meanwhile, the metastable stannous oxide product cannot be oxidized due to the reducibility of hydrazine hydrate.

Description

technical field [0001] The invention relates to a hydrothermal synthesis method of stannous oxide nano sheet. Background technique [0002] With the intensification of energy crisis and environmental damage, new energy and renewable clean energy technologies have attracted great attention from the global research community and business circles, including rechargeable battery technology represented by lithium-ion secondary batteries. Lithium-ion batteries, as a new generation of rechargeable batteries, have developed rapidly in the past 10 years, and have dominated the field of mobile electronic terminal equipment such as notebook computers and mobile phones, with broad market prospects. [0003] Lithium-ion batteries are generally composed of basic elements such as positive electrode, negative electrode, separator and electrolyte. The negative electrode material is one of the key technologies of lithium-ion batteries. The negative electrode materials currently used can be di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G19/02
Inventor 祝洪良朱鲁明姚奎鸿席珍强
Owner ZHEJIANG SCI-TECH UNIV
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