MXene quantum dot sensitized poly (diallyldimethylammonium chloride) modified indium zinc sulfide photocatalyst as well as preparation and application thereof

A technology for sensitizing polydiallyl dimethyl ammonium chloride and photocatalyst, which is applied in the fields of composite materials, photocatalytic technology and sustainable development of environment and energy. To wait for the problem, to achieve the effect of strong cycle stability, low production cost and simple production process

Pending Publication Date: 2022-03-01
MINDU INNOVATION LAB
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As far as the current research reports are concerned, although ZnIn 2 S 4 The visible light catalytic water splitting hydrogen production and the visible light catalytic selective redox have high stability, but the photocatalytic activity is not very high, which cannot reach the level of practical application.

Method used

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  • MXene quantum dot sensitized poly (diallyldimethylammonium chloride) modified indium zinc sulfide photocatalyst as well as preparation and application thereof
  • MXene quantum dot sensitized poly (diallyldimethylammonium chloride) modified indium zinc sulfide photocatalyst as well as preparation and application thereof
  • MXene quantum dot sensitized poly (diallyldimethylammonium chloride) modified indium zinc sulfide photocatalyst as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] ①Add 1.5 mmol of Zn(CH 3 COO) 2 2H 2 O and 3 mmol InCl 3 Add 250 mL of deionized water and stir for 30 minutes. Subsequently, excess thioacetamide (TAA, 8 mmol) was added to the above solution and stirred for 30 minutes. The mixed solution was then heated to 95 °C for 5 h with vigorous stirring. After cooling to room temperature, the orange precipitate was collected by centrifugation and washed several times with deionized water to obtain ZnIn 2 S4 Nanosheets.

[0029] ② Dilute 2.0 g of Ti 3 AlC 2 The powder was immersed in 40 mL of 48% hydrofluoric acid and stirred continuously at 60°C for 20 hours. The obtained powder was then washed several times with deionized water, centrifuged at 3500 rpm for 10 min to recover the powder particles, and dried under vacuum at 60 °C. The obtained powder was then placed in 80 mL of deionized water, and ultrasonicated for 30 minutes under nitrogen protection. The pH of the mixed solution was adjusted to 9 with ammonia water, ...

Embodiment 2

[0034] ①Add 1.5 mmol of Zn(CH 3 COO) 2 2H 2 O and 3 mmol InCl 3 Add 250 mL of deionized water and stir for 30 minutes. Subsequently, excess thioacetamide (TAA, 8mmol) was added to the above solution and stirred for 30 minutes. Then the mixed solution was heated to 95 °C for 5 h with vigorous stirring. After cooling to room temperature, the orange precipitate was collected by centrifugation and washed several times with deionized water to obtain ZnIn 2 S 4 Nanosheets.

[0035] ②Add 2.0g Ti 3 AlC 2 The powder was immersed in 40 mL of 48% hydrofluoric acid and stirred continuously at 60°C for 20 hours. Then the obtained powder was washed several times with deionized water, centrifuged at 3500 rpm for 10 minutes to recover the powder particles, and dried under vacuum at 60 °C. The obtained powder was then placed in 80 mL of deionized water, and ultrasonicated for 30 minutes under nitrogen protection. The pH of the mixed solution was adjusted to 9 with ammonia water, and...

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PUM

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Abstract

The invention discloses an MXene quantum dot sensitized poly (diallyldimethylammonium chloride) modified indium zinc sulfide photocatalyst as well as preparation and application thereof, a PDDA surface modified ZnIn2S4 nanosheet (ZnIn2S4/PDDA) has a positive charge surface, and the surfaces of MQDs have negative charges to trigger electrostatic self-assembly, so that a ZnIn2S4/PDDA/MQDs heterostructure photocatalyst with a unidirectional cascade charge transmission chain is constructed. According to the invention, p-nitroaniline is reduced and substituted under the excitation of visible light, and the catalyst has high catalytic efficiency. The composite photocatalytic material has wide practical value and application prospect in the technical field of preparation of heterojunction photocatalytic materials and the field of organic conversion.

Description

technical field [0001] The invention relates to a ZnIn modified by MQDs / PDDA 2 S 4 The preparation of photocatalyst and the application of photocatalytic reduction of p-nitroaniline belong to the fields of composite materials, photocatalytic technology, and sustainable development of environment and energy. Background technique [0002] Transition metal sulfides belong to an important subclass of semiconductor photocatalysts that can promote a variety of valuable redox reactions under mild conditions. A significant advantage of metal sulfides is that they have smaller band gaps than metal oxides, which in turn ensures that many of them can directly utilize visible light. Ternary metal sulfide ZnIn 2 S 4 It has the advantages of small band gap, suitable energy band structure, unique photoelectric properties, excellent photochemical stability and simple preparation process. people's attention. As far as the current research reports are concerned, although ZnIn 2 S 4 Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/06B01J27/22B01J27/04C07C209/32C07C211/51
CPCB01J31/063B01J27/22B01J27/04B01J35/004B01J35/0013C07C209/325C07C211/51
Inventor 肖方兴刘必坚
Owner MINDU INNOVATION LAB
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