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A kind of molybdenum disulfide/tin niobate composite nanomaterial and its application

A technology of composite nanomaterials and molybdenum disulfide, which is applied in the fields of composite materials and clean energy to achieve the effects of improving stability, high yield and low production cost

Active Publication Date: 2020-02-21
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] So far, no one has reported the preparation of MoS by hydrothermal method 2 / SnNb 2 o 6 Composite materials, the chemical and physical properties of SNO are stable, the raw materials are cheap and easy to get, non-toxic, and MoS is prepared using it as a carrier 2 / SnNb 2 o 6 The reaction process of the composite material is simple, and the resulting product has good photocatalytic hydrogen production activity and high stability, and has good application prospects in the fields of environment and energy

Method used

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  • A kind of molybdenum disulfide/tin niobate composite nanomaterial and its application
  • A kind of molybdenum disulfide/tin niobate composite nanomaterial and its application
  • A kind of molybdenum disulfide/tin niobate composite nanomaterial and its application

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Example 1SnNb 2 o 6 Preparation of nanosheets

[0032] SnNb 2 o 6The preparation adopts the method of hydrothermal reaction: Weigh 0.5g of niobium pentoxide and 2.2443g of potassium hydroxide in a 50mL reactor lined with polytetrafluoroethylene, add 35mL of deionized water to it, and put the reactor Put it in an oven and react with water at 180°C for 48 hours. After naturally cooling to room temperature, a clear precursor solution is obtained. Transfer the solution to a 50mL beaker, adjust the pH of the solution to 8 with a concentration of 2mol / L dilute hydrochloric acid, and then add 0.4245g Tin protochloride dihydrate, adjust the pH of the solution to 2 with dilute hydrochloric acid at a concentration of 2mol / L again, transfer the solution to a 100mL reactor lined with polytetrafluoroethylene, put it in an oven, and conduct a hydrothermal reaction at 200°C for 48h. Cool to room temperature, centrifuge to obtain yellow particles, wash with water and alcohol three ...

Embodiment 2

[0033] Example 2MoS 2 Preparation of nanosheets

[0034] MoS 2 The preparation adopts the method of hydrothermal reaction: Weigh 0.242g sodium molybdate dihydrate and 0.38g thiourea to dissolve in 60ml deionized water, stir magnetically for 30min to form a clear solution, transfer the solution to 100mL lined with polytetrafluoroethylene Put it in a reaction kettle of vinyl fluoride, put it in an oven, conduct a hydrothermal reaction at 210°C for 24 hours, cool to room temperature, centrifuge to obtain black particles, wash with water and alcohol three times, centrifuge, and dry in an oven at 60°C for 12 hours.

Embodiment 3

[0035] Example 3 5%-MoS 2 / SnNb 2 o 6 Preparation of composite materials

[0036] MoS 2 / SnNb 2 o 6 The preparation of the composite material adopts the hydrothermal method: weigh 80mg SnNb 2 o 6 Dissolve in 60ml deionized water, stir magnetically for 15min, and then ultrasonicate for 60min in an ultrasonic machine with a power of 250W to obtain a uniform yellow solution. Weigh 6.35mg sodium molybdate dihydrate and 10mg thiourea, dissolve them in the above solution, and stir magnetically for 30min , transfer the solution to a 100mL reaction kettle lined with polytetrafluoroethylene, put it in an oven, and conduct a hydrothermal reaction at 210°C for 24 hours. ℃ drying for 12h to obtain the 5%-MoS 2 / SnNb 2 o 6 composite material.

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Abstract

The invention aims at the problem of low catalytic efficiency of visible light catalysis of single two-dimensional molybdenum disulfide, provides a simple preparation method of molybdenum disulfide / tin niobate composite nanomaterial, is mainly used in the technology of hydrogen production realized through photocatalytic decomposition of water, and belongs to the technical field of composites and the field of clean energy. The MoS2 / SnNb2O6 composite is prepared by weighing and dissolving SnNb2O6 in deionized water, magnetically stirring for the first time, conducting ultrasonic dispersion, weighing sodium molybdate dihydrate and thiourea again, dissolving the sodium molybdate dihydrate and the thiourea into the solution, magnetically stirring for the second time, transferring a reaction liquid into a reaction kettle after the reactants are evenly mixed, putting the reaction kettle into an oven, conducting a hydrothermal reaction, centrifuging after naturally cooling to a room temperature, washing with water and washing with alcohol for a plurality of times, and drying, wherein a liner of the reaction kettle is made of teflon. The sheet MoS2 is dispersed on an SNO nanosheet.

Description

technical field [0001] Aiming at the problem of low visible light catalytic efficiency of a single two-dimensional layered molybdenum disulfide, the present invention provides a simple molybdenum disulfide / tin niobate composite nanomaterial, which is mainly used in the technology of photocatalytic decomposition of water to produce hydrogen. Materials technology field and clean energy field. [0002] technical background [0003] With the growth of the economy, the deteriorating environmental problems have become particularly prominent; photocatalytic technology based on semiconductors and their derivative materials can use clean and sustainable solar energy to treat organic pollutants in the environment and split water to produce hydrogen, which has been widely accepted. There is more and more attention in the society; in recent years, two-dimensional layered molybdenum disulfide (MoS 2 ) and other emerging materials such as two-dimensional transition metal sulfides have aro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/051C01B3/04
CPCB01J27/051B01J35/004C01B3/042C01B2203/0277C01B2203/1088Y02E60/36
Inventor 姜德立金雨陈敏李娣
Owner JIANGSU UNIV
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