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A 1t@2h-mos 2 /sns 2 Preparation method, product and application of visible light-responsive photocatalyst

A photocatalyst and visible light technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of poor conductivity, carrier separation and migration, etc., and achieve simple preparation methods Effect

Active Publication Date: 2022-08-05
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is well known that for semiconductor pn junction photocatalysts, the driving force for carrier separation at the interface is the built-in electric field. Due to the poor conductivity of the semiconductor itself, the separation and migration of carriers at the interface is not ideal.

Method used

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  • A 1t@2h-mos <sub>2</sub> /sns <sub>2</sub> Preparation method, product and application of visible light-responsive photocatalyst
  • A 1t@2h-mos <sub>2</sub> /sns <sub>2</sub> Preparation method, product and application of visible light-responsive photocatalyst
  • A 1t@2h-mos <sub>2</sub> /sns <sub>2</sub> Preparation method, product and application of visible light-responsive photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] 1T@2H-MoS 2 / SnS 2 The preparation method of visible light responsive photocatalyst comprises the following steps:

[0051] (1) Mixing solution: Dissolve 0.151g of sodium molybdate hydrate and 0.763g of hydrated tin chloride in 80mL of deionized water, then add 2.174g of citric acid, 1.439g of thiourea, ultrasonically treat, and magnetically stir at room temperature for 1h Dissolved, the pH of the solution is 3-5;

[0052] (2) hydrothermal synthesis: the solution in step (1) was transferred to a 100mL reaction kettle, heated to 220°C, and cooled to room temperature naturally after being kept for 24h;

[0053] (3) Separation and washing: The reaction product in step (2) was collected, centrifuged, washed alternately with ethanol and distilled water to remove impurities, and then vacuum-dried at 60° C. for 8 hours to obtain MoS 2 The mass ratios of 1T@2H-MoS were 20% 2 / SnS 2 Photocatalyst, named MSS20.

Embodiment 2

[0055] 1T@2H-MoS 2 / SnS 2 The preparation method of visible light responsive photocatalyst comprises the following steps:

[0056] (1) Mixing solution: Dissolve 0.303g sodium molybdate hydrate and 0.572g tin chloride hydrate in 80mL deionized water, then add 1.725g citric acid, 1.304g thiourea, ultrasonically treat, and magnetically stir at room temperature for 1h Dissolved, the pH of the solution is 3-5;

[0057] (2) hydrothermal synthesis: the solution in step (1) was transferred to a 100mL reaction kettle, heated to 220°C, and cooled to room temperature naturally after being kept for 24h;

[0058] (3) Separation and washing: The reaction product in step (2) was collected, centrifuged, washed alternately with ethanol and distilled water to remove impurities, and then vacuum-dried at 60° C. for 8 hours to obtain MoS 2 The mass ratios of 1T@2H-MoS were 40% 2 / SnS 2 Photocatalyst, named MSS40.

Embodiment 3

[0060] 1T@2H-MoS 2 / SnS 2 The preparation method of visible light responsive photocatalyst comprises the following steps:

[0061] (1) Mixing solution: Dissolve 0.454g sodium molybdate hydrate and 0.381g tin chloride hydrate in 80mL deionized water, then add 1.276g citric acid, 1.17g thiourea, ultrasonically treat, and magnetically stir at room temperature for 1h Dissolved, the pH of the solution is 3-5;

[0062] (2) hydrothermal synthesis: the solution in step (1) was transferred to a 100mL reaction kettle, heated to 220°C, and cooled to room temperature naturally after being kept for 24h;

[0063] (3) Separation and washing: The reaction product in step (2) was collected, centrifuged, washed alternately with ethanol and distilled water to remove impurities, and then vacuum-dried at 60° C. for 8 hours to obtain MoS 2 The mass ratios of 1T@2H-MoS were 60% 2 / SnS 2 Photocatalyst, named MSS60.

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Abstract

The invention discloses a 1T@2H-MoS 2 / SnS 2 The preparation method of a photocatalyst relates to the technical field of photocatalysts, and the present invention comprises the following steps: (1) mixing and preparing liquid; (2) hydrothermal synthesis; (3) separating and washing to obtain 1T@2H-MoS 2 / SnS 2 catalyst of light. The present invention also provides 1T@2H-MoS prepared by the above preparation method 2 / SnS 2 Photocatalysts and their applications. The beneficial effects of the present invention are as follows: the present invention adopts a one-step synthesis method to prepare the product, the preparation method is simple, and the prepared 1T@2H-MoS 2 / SnS 2 The heterocomposite exhibits good photocatalytic degradation performance with good stability and recyclability.

Description

technical field [0001] The invention relates to the technical field of photocatalysts, in particular to a 1T@2H-MoS 2 / SnS 2 Preparation method, product and application of visible light responsive photocatalyst. Background technique [0002] The design of composite photocatalysts with simple preparation process, controllable components and high visible light catalytic activity is a very important research direction in the field of semiconductor catalysts. As two important metal sulfide semiconductor materials, MoS 2 and SnS 2 The band gaps of all fall in the range of visible light (about 2eV), and there is a certain similarity in structure, so the construction of MoS 2 / SnS 2 Heterojunction and the corresponding photocatalytic research are very valuable. [0003] Although there are several cases of MoS 2 / SnS 2 A report on the catalytic performance of heterojunctions (Zhang J, Huang G, Zeng J, et al. SnS 2 nanosheets coupled with 2D ultrathin MoS 2 nanolayers as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/051C02F1/30C02F101/38
CPCB01J27/051C02F1/30C02F2305/10C02F2101/40C02F2101/38B01J35/39
Inventor 陈昌兆申猛李远志
Owner ANHUI UNIV OF SCI & TECH
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