Preparation and application of MoS < 2 >-C double-layer hollow sphere with high specific surface area

A high specific surface area, double-layer hollow technology, applied in the direction of microsphere preparation, carbon preparation/purification, microcapsule preparation, etc., can solve single problems, achieve uniform shape, simultaneous photocatalytic degradation and capacitive adsorption desalination, The effect of improving performance quality

Pending Publication Date: 2022-07-22
CHANGZHOU INST OF LIGHT IND TECH
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  • Abstract
  • Description
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Problems solved by technology

[0004] However, the current industrial wastewater treatment uses a single technology, or can only be effective for one type of pollutants. Therefore, the present invention aims to provide a high specific surface area of ​​MoS 2 @C double-layer hollow sphere, and apply it to simultaneous photocatalytic degradation and capacitive adsorption desalination process to realize simultaneous purification of organic pollutants and metal ions in industrial wastewater

Method used

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  • Preparation and application of MoS &lt; 2 &gt;-C double-layer hollow sphere with high specific surface area
  • Preparation and application of MoS &lt; 2 &gt;-C double-layer hollow sphere with high specific surface area
  • Preparation and application of MoS &lt; 2 &gt;-C double-layer hollow sphere with high specific surface area

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Experimental program
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Effect test

Embodiment 1

[0048] 1. MoS with high specific surface area 2 Preparation of @C Bilayer Hollow Spheres

[0049] (1) SiO 2 Preparation of Nanosphere Templates

[0050] Deionized water (10 mL), ethanol (70 mL), tetraethyl orthosilicate (TEOS) (3.5 mL) and NH were added to the beaker sequentially 3 ·H 2 O (27wt%) (3mL), vigorously stirred at room temperature for 25min, after a period of stirring, the solution will gradually change from transparent to milky white, and SiO 2 nanospheres;

[0051] (2) MoS 2 @C synthesis of hollow spheres

[0052] With the SiO prepared in step (1) 2 The nanospheres are used as templates. After the solution in step (1) is evenly stirred, 0.4 g of resorcinol and 0.4 g of ammonium tetrathiomolybdate are successively added, and after continuous stirring for 2 h, 0.8 mL of formaldehyde solution (37w%) is added dropwise. ), continue to stir until the solution becomes a uniform suspension, then transfer to a 100ml polytetrafluoroethylene reactor for hydrothermal ...

Embodiment 2

[0059] 1. MoS with high specific surface area 2 Preparation of @C Bilayer Hollow Spheres

[0060] (1) SiO 2 Preparation of Nanosphere Templates

[0061] Deionized water (10 mL), ethanol (70 mL), tetraethyl orthosilicate (TEOS) (3.5 mL) and NH were added to the beaker sequentially 3 ·H 2 O (27wt%) (3mL), vigorously stirred at room temperature for 25min, after a period of stirring, the solution will gradually change from transparent to milky white, and SiO 2 nanospheres;

[0062] (2) MoS 2 @C synthesis of hollow spheres

[0063] With the SiO prepared in step (1) 2 The nanospheres are used as templates. After the solution in step (1) is evenly stirred, an appropriate amount of resorcinol, 0.6 g of ammonium molybdate and 0.6 g of ascorbic acid are successively added, and the theoretical C content is 5%. After adding 0.8g thiourea, add 0.8mL formaldehyde solution (37w%) dropwise, continue stirring until the solution is a uniform suspension, transfer to a 100ml polytetrafluo...

Embodiment 3

[0070] 1. MoS with high specific surface area 2 Preparation of @C Bilayer Hollow Spheres

[0071] (1) SiO 2 Preparation of Nanosphere Templates

[0072] Deionized water (10 mL), ethanol (70 mL), tetraethyl orthosilicate (TEOS) (3.5 mL) and NH were added to the beaker sequentially 3 ·H 2 O (27wt%) (3mL), vigorously stirred at room temperature for 25min, after a period of stirring, the solution will gradually change from transparent to milky white, and SiO 2 Nanospheres.

[0073] (2) MoS 2 @C synthesis of hollow spheres

[0074] With the SiO prepared in step (1) 2 The nanosphere is used as a template. After the solution in step (1) is evenly stirred, an appropriate amount of resorcinol, 0.8 g of ammonium molybdate and 0.5 g of hydroxylamine hydrochloride are successively added, and the theoretical C content is 10%. After continuous stirring for 2 hours, After adding 1.2g of sodium sulfide, add 0.8mL formaldehyde solution (37w%) dropwise, continue to stir until the soluti...

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Abstract

The invention relates to preparation and application of a MoS < 2 >-C double-layer hollow sphere with a high specific surface area. The morphology of the MoS < 2 >-C double-layer hollow sphere is a double-layer hollow structure of a molybdenum disulfide coated carbon sphere, and the average size of the MoS < 2 >-C double-layer hollow sphere is 1-2 microns; wherein the mass percentage of carbon in the MoS < 2 >-C double-layer hollow sphere is 1%-10%, and the balance is molybdenum disulfide. According to the preparation method, SiO2 nanospheres serve as sacrificial templates, MoS2 and C grow on the surfaces of the SiO2 nanospheres, then the SiO2 nanospheres are acidized and etched to obtain MoS2 at C hollow spheres, then the MoS2 at C double-layer hollow spheres are generated through a similar hydrothermal synthesis method, the MoS2 at C double-layer hollow spheres synthesized through the method can ensure that MoS2 and C are well combined, the synergistic effect of MoS2 and C is achieved, the SiO2 nanospheres play a role of a hard template, and the MoS2 at C double-layer hollow spheres can be used for preparing the MoS2 at C double-layer hollow spheres. The MoS < 2 >-C double-layer hollow sphere prepared by the preparation method is beneficial to growth of C nanoparticles on the surface of the hollow sphere and regulation and control of the structure and morphology of the hollow sphere, so that the generated MoS < 2 >-C double-layer hollow sphere is uniform in shape, and the uniformity of a photocatalysis / capacitance adsorption effect is ensured.

Description

technical field [0001] The invention relates to the field of nanomaterials and environmental protection materials, in particular to a high specific surface area MoS 2 Preparation and application of @C double-layer hollow spheres. Background technique [0002] With the development of the world economy and the rapid growth of population, environmental problems and energy crisis have become the current hotspots. In recent years, with the process of urbanization and industrialization, the shortage of water resources caused by water pollution has become the most important problem that restricts the development of human society. Exploration and development of new industrial wastewater treatment technology has become a current research hotspot. [0003] Photocatalytic oxidation technology based on semiconductor materials should be gradually applied to the degradation of pollutants in water, such as organic dyes, antibiotics, phenolic compounds and heavy metal ions. with TiO 2 T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/051B01J13/02B01J20/20C01G39/06C01B32/05C02F1/30C02F1/461C02F1/469C02F1/28C02F101/20C02F101/30
CPCB01J27/051B01J13/02B01J20/20C02F1/30C02F1/469C02F1/283C02F1/46109C01G39/06C01B32/05C02F2101/30C02F2101/20C02F2305/10C02F2001/46142C01P2004/04C01P2002/85B01J35/39
Inventor 唐国钢梅彤薛靖周弋帛徐自明薛茂权
Owner CHANGZHOU INST OF LIGHT IND TECH
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