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non-lamellar sn 2 p 2 s 6 Preparation method of nanosheets and its application in the field of photocatalytic hydrogen evolution

A nanosheet, non-layered technology, applied in the field of inorganic semiconductor nanomaterials, can solve the problems of restricted layered structure, introduction of solvent impurities, long preparation period, etc., and achieve the effects of stable chemical properties, good crystallinity and simple equipment

Active Publication Date: 2022-08-05
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

This method is relatively cumbersome, and Sn is synthesized by chemical vapor transport. 2 P 2 S 6 material, its preparation cycle is long, generally takes several weeks or even months, and only bulk Sn can be obtained by this method 2 P 2 S 6 material, to get Sn 2 P 2 S 6 Nanosheets need to be treated with liquid phase intercalation and stripping, but the method of liquid phase intercalation and stripping often introduces solvent impurities into the material, and this method is limited by the layered structure of the material itself, and only layered Sn 2 P 2 S 6 Nanosheets

Method used

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  • non-lamellar sn <sub>2</sub> p <sub>2</sub> s <sub>6</sub> Preparation method of nanosheets and its application in the field of photocatalytic hydrogen evolution
  • non-lamellar sn <sub>2</sub> p <sub>2</sub> s <sub>6</sub> Preparation method of nanosheets and its application in the field of photocatalytic hydrogen evolution
  • non-lamellar sn <sub>2</sub> p <sub>2</sub> s <sub>6</sub> Preparation method of nanosheets and its application in the field of photocatalytic hydrogen evolution

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Embodiment 1

[0040] This embodiment provides a high-quality large-area non-layered Sn 2 P 2 S 6 The preparation method of nanosheets, the specific steps are as follows:

[0041] (1) 48.0 mg of thioacetamide (C 2 H 5 NS), 56.0mg tin tetrachloride pentahydrate (SnCl 4 ·5H 2 O) dissolved in 40 mL of isopropanol (C 3 H 8 (2), the solution was transferred to a 50mL polytetrafluoroethylene reactor after 5 minutes of ultrasound, and the carbon cloth fibers with an aspect ratio of 3cm×2cm were leaned in the reactor, and a solvothermal reaction was carried out at 180°C, Incubate for 24 hours, and obtain SnS loaded on carbon cloth fibers after the reaction is completed. 2 Nanocrystalline.

[0042] (2) SnS supported on carbon cloth fibers 2 Nanocrystalline and red phosphorus / sulfur mixed powder were placed on the sealing ends of two quartz sleeves, respectively, and placed in the Zone-II and Zone-I heating zones of the double-temperature zone tube furnace with a distance of 25 cm. The tube...

Embodiment 2

[0052] This embodiment provides a non-layered Sn 2 P 2 S 6 The preparation method of nanosheets, the specific steps are as follows:

[0053] (1) 48.0 mg of thioacetamide (C 2 H 5 NS), 56.0mg tin tetrachloride pentahydrate (SnCl 4 ·5H 2 O) dissolved in 40 mL of isopropanol (C 3 H 8 (2), the solution was transferred to a 50mL polytetrafluoroethylene reactor after ultrasonication for 5 minutes, and the carbon cloth fibers with an aspect ratio of 3cm×2cm were leaned in the reactor, and a solvothermal reaction was carried out at 180°C, Incubate for 24 hours, and obtain SnS loaded on carbon cloth fibers after the reaction is completed. 2 Nanocrystalline.

[0054] (2) SnS supported on carbon cloth fibers 2 Nanocrystalline and red phosphorus / sulfur mixed powder were placed on the sealing ends of two quartz sleeves, respectively, and placed in the Zone-II and Zone-I heating zones of the dual-temperature zone tube furnace, with a distance of 25 cm, and a mechanical pump was us...

Embodiment 3

[0057] This embodiment provides a Sn 2 P 2 S 6 The preparation method, the specific steps are as follows:

[0058] (1) 48.0 mg of thioacetamide (C 2 H 5 NS), 56.0mg tin tetrachloride pentahydrate (SnCl 4 ·5H 2 O) dissolved in 40 mL of isopropanol (C 3 H 8 (2), the solution was transferred to a 50mL polytetrafluoroethylene reactor after ultrasonication for 5 minutes, and the carbon cloth fibers with an aspect ratio of 3cm×2cm were leaned in the reactor, and a solvothermal reaction was carried out at 180°C, Incubate for 24 hours, and obtain SnS loaded on carbon cloth fibers after the reaction is completed. 2 Nanocrystalline.

[0059] (2) SnS supported on carbon cloth fibers 2 Nanocrystalline and red phosphorus / sulfur mixed powder were placed on the sealing ends of two quartz sleeves, respectively, and placed in the Zone-II and Zone-I heating zones of the dual-temperature zone tube furnace, with a distance of 25 cm, and a mechanical pump was used for the heating zone. ...

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Abstract

The present invention provides a non -layered SN 2 P 2 S 6 The preparation method of nanoscopic tablets and its application in the field of photocatalytic hydrogen analysis includes the method of mixing sulfur sulfur powder and SNS 2 The steps of nano crystal reaction of chemical gas deposition; of which, the mixed powder mixed powder is located on the upstream of the reactor, SNS 2 Nano -crystals are located in the downstream, the upstream heating temperature is set to 270 to 330 ° C, and the downstream heating temperature is set to 340 to 380 ° C.The method of the present invention can quickly and cost SN that is evenly distributed on the base with a uniform area on the base 2 P 2 S 6 Nano -table 2 P 2 S 6 Nano -sheet crystals are good, chemically stable, and have broad application prospects in the field of photocatalytic hydrogen.This method is easy to operate, the required equipment is simple, and can be applied to large -scale industrial production in high efficiency.

Description

technical field [0001] The invention relates to the field of inorganic semiconductor nanomaterials, in particular to a non-layered Sn 2 P 2 S 6 Preparation method of nanosheet and its application in the field of photocatalytic hydrogen evolution. Background technique [0002] Two-dimensional metal phosphorus sulfides (MPX, X=S, Se, Te, etc.) have recently attracted extensive attention in the international community due to their unique physical and chemical properties, and have been widely used in catalysis, clean energy storage and conversion, etc. . [0003] Two-dimensional metal phosphorus sulfides (MPX) can be classified into the following four categories according to their crystalline structures: tetrahedral coordination of phosphorus atoms with metal atoms (such as CrPS 4 ), the phosphorus atom is octahedral coordinated to the metal atom (such as Pd 3 P 2 S 8 ), the phosphorus atom pair is octahedral coordinated to the metal atom (such as NiPS 3 ), and the phosp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G19/00B01J27/14B01J37/02B82Y30/00B82Y40/00C01B3/04
CPCB01J27/14B01J37/0238B01J35/004B82Y30/00B82Y40/00C01B3/042C01G19/006C01P2002/72C01P2002/82C01P2004/03C01P2004/04C01P2002/01C01P2004/24Y02E60/36
Inventor 何军马什特·盖泰·仙台王枫梅高宁王振兴
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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