Preparation method of CdIn2S4 nano particle modified few-layer MoS2 nanosheet composite photocatalyst

A nanoparticle, cdin2s4 technology, applied in the field of inorganic nanocomposite materials, achieves the effect of simple operation process, broad application prospects and short reaction cycle

Active Publication Date: 2019-08-16
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

After verification, there is no information about binary CdIn at home and abroad. 2 S 4 Nanoparticle-modified few-layer MoS 2 A report of nanoshe

Method used

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  • Preparation method of CdIn2S4 nano particle modified few-layer MoS2 nanosheet composite photocatalyst
  • Preparation method of CdIn2S4 nano particle modified few-layer MoS2 nanosheet composite photocatalyst
  • Preparation method of CdIn2S4 nano particle modified few-layer MoS2 nanosheet composite photocatalyst

Examples

Experimental program
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Example Embodiment

[0023] Example 1

[0024] (1) Weigh 0.0009g MoS 2The nano-blocks were dispersed in 10 ml of ethanol, centrifuged at 2000 r / min after ultrasonication for 8 h, and the upper layer of light black suspension was taken, and then vacuum-dried to obtain a few layers of MoS 2 ultrathin nanosheets.

[0025] (2) MoS in step (1) 2 All ultrathin nanosheets were added to 15mL of absolute ethanol, ultrasonically dispersed for 30min, and then 0.1405g of CdSO was added to it 4 ·8H 2 O, after ultrasonic stirring for 10min, add 0.3044g In(NO 3 ) 3 ·4.5H 2 O and 0.2427g CH 4 N 2 S (thiourea), stir until dissolved, then carry out hydrothermal reaction, the temperature is 180 ° C, the time is 15 h, and it is cooled to room temperature, centrifuged, washed, and dried to obtain CdIn 2 S 4 Nanoparticle-modified few-layer MoS 2 Nanosheet composite photocatalyst. where MoS 2 The mass percentage of the composite photocatalyst is 0.5%

[0026] When the sample was exposed to visible light fo...

Example Embodiment

[0028] Example 2

[0029] (1) Weigh 0.0068g MoS 2 The nanoblocks were dispersed in 15ml of ethanol, centrifuged at 2500r / min after ultrasonication for 10h, and the upper layer of light black suspension was taken, and then vacuum-dried to obtain few-layer MoS 2 ultrathin nanosheets.

[0030] (2) MoS in step (1) 2 All the ultrathin nanosheets were added to 20mL of absolute ethanol, ultrasonically dispersed for 30min, and then 0.5339g of CdSO was added to it 4 ·8H 2 O, after ultrasonic stirring for 15min, add 1.1567g In(NO 3 ) 3 ·4.5H 2 O and 0.9223g CH 4 N 2 S (thiourea), stir until dissolved, then carry out a hydrothermal reaction, the temperature is 190 ° C, the time is 18 h, and it is cooled to room temperature, centrifuged, washed, and dried to obtain CdIn 2 S 4 Nanoparticle-modified few-layer MoS 2 Nanosheet composite photocatalyst. where MoS 2 The mass percentage of the composite photocatalyst is 1%

[0031] When the sample was exposed to visible light for 90...

Example Embodiment

[0034] Example 3

[0035] (1) Weigh 0.0236g MoS 2 The nano-blocks were dispersed in 20 ml of ethanol, centrifuged at 2500 r / min after ultrasonication for 12 h, and the upper layer of light black suspension was taken, and then vacuum-dried to obtain a few layers of MoS 2 ultrathin nanosheets.

[0036] (2) MoS in step (1) 2 All the ultrathin nanosheets were added to 25mL of absolute ethanol, ultrasonically dispersed for 40min, and then 0.8711g of CdSO was added to it 4 ·8H 2 O, after ultrasonic stirring for 20min, add 1.8873g In(NO 3 ) 3 ·4.5H 2 O and 1.5047g CH 4 N 2 S (thiourea), stir to dissolve, then carry out hydrothermal reaction, temperature 200 ℃, time 20h, let it cool to room temperature, centrifuge, wash and dry to obtain CdIn 2 S 4 Nanoparticle-modified few-layer MoS 2 Nanosheet composite photocatalyst. where MoS 2 The mass percentage of the composite photocatalyst is 2%

[0037] When the sample was exposed to visible light for 90 min, the photocatalytic...

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Abstract

The invention belongs to the field of preparation of nano composite materials and environmental water pollution treatment, and discloses a preparation method and application of a CdIn2S4 nano particlemodified few-layer MoS2 nanosheet composite photocatalyst. In the method, MoS2 nano-blocks are ultrasonically stripped into few-layer MoS2 nanosheets, and then the CdIn2S4 nano particle modified few-layer MoS2 nanosheet composite photocatalyst is prepared by impregnation-hydrothermal method. The CdIn2S4/MoS2 nanocomposite photocatalyst is used to catalytically degrade 2-thiol benzothiazole or tetracycline hydrochloride under visible light. The preparation method has the advantages of rich and easy source of raw materials for preparation, simple operation process and short reaction period, andbelongs to green chemistry. CdIn2S4 nano particles are attached to the MoS2 ultra-thin nanosheets to synthesize a novel composite photocatalyst based on the MoS2 ultra-thin nanosheets. The hybrid heterojunction is constructed to accelerate the transfer rate of photogenerated carriers and increase the separation efficiency, thereby greatly increasing the activity of the photocatalyst. The CdIn2S4nano particle modified few-layer MoS2 nanosheet composite photocatalyst has significant application prospects in solving water pollution.

Description

technical field [0001] The invention belongs to the field of inorganic nano-composite materials, and relates to a binary CdIn 2 S 4 / MoS 2 Preparation method of nanocomposite photocatalyst and its application in environmental water pollution control. Background technique [0002] With the rapid development of industry, the world is facing serious environmental pollution problems, among which the water pollution problem is becoming more and more serious, and it has become an urgent problem to be solved in the world. The research of semiconductor photocatalytic oxidation technology is based on dealing with the increasingly serious environmental pollution problem, and has the advantages of low energy consumption, simple operation process, mild reaction conditions and so on. However, due to the low utilization rate of visible light absorption for most photocatalysts and the rapid recombination of photogenerated carriers and holes, which seriously affects the popularization an...

Claims

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Application Information

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IPC IPC(8): B01J27/051B01J37/02B01J37/10B01J35/10B01J37/34B82Y30/00B82Y40/00C02F1/30C02F101/30C02F101/34C02F101/36C02F101/38
CPCB01J27/051B01J37/0201B01J37/10B01J35/004B01J35/1004B01J37/343B82Y30/00B82Y40/00C02F1/30C02F2101/34C02F2101/38C02F2101/40C02F2101/36C02F2305/10
Inventor 肖艳冯新涛蒋银花王啟源彭志远张申张文莉倪良
Owner JIANGSU UNIV
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