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Ultrathin CaIn2S4 nanosheet photocatalytic material and preparation method thereof

A photocatalytic material, cain2s4 technology, applied in the field of ultra-thin CaIn2S4 nanosheet photocatalytic materials and their preparation, can solve problems such as excellent sterilization performance, achieve the effects of simple process, improved photocatalytic sterilization efficiency, and strong controllability

Pending Publication Date: 2021-12-07
SHANGHAI PUTUO DISTRICT PEOPLES HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no ultra-thin CaIn with excellent bactericidal performance as the present application 2 S 4 Reports on Nanosheet Materials and Their Preparation and Applications

Method used

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  • Ultrathin CaIn2S4 nanosheet photocatalytic material and preparation method thereof
  • Ultrathin CaIn2S4 nanosheet photocatalytic material and preparation method thereof
  • Ultrathin CaIn2S4 nanosheet photocatalytic material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0036] Embodiment 1 Ultra-thin CaIn of the present invention 2 S 4 Preparation of Nanosheets (1)

[0037] Dissolve 0.2643g of calcium acetate monohydrate and 0.6635g of anhydrous indium chloride in a round bottom flask filled with 250mL of deionized water, stir at room temperature for 30min, then add 0.6010g of thioacetamide and stir until dissolved, then place the round Put the bottom flask into an oil bath and heat up to 95°C, and stir vigorously for 5 hours. The resulting suspension was centrifuged at a speed of 9000r.p.m. for 3min, the precipitate was collected and washed twice with deionized water, dispersed again in 200mL of deionized water, ultrasonically stripped at 40KHz, 250W for 30min, and then centrifuged at a speed of 6000r.p.m. for 5min, and taken The supernatant was used as a sample.

Embodiment 2

[0038] Embodiment 2 Ultra-thin CaIn of the present invention 2 S 4 Preparation of Nanosheets (2)

[0039] Dissolve 0.2643g of calcium acetate monohydrate and 0.6635g of anhydrous indium chloride in a round bottom flask filled with 250mL of deionized water, stir at room temperature for 30min, then add 0.7892g of thioacetamide and stir until dissolved, then place the round Put the bottom flask into an oil bath and heat up to 95°C, and stir vigorously for 5 hours. The resulting suspension was centrifuged at a speed of 9000r.p.m. for 3min, the precipitate was collected and washed twice with deionized water, dispersed again in 200mL of deionized water, ultrasonically stripped at 40KHz, 250W for 30min, and then centrifuged at a speed of 6000r.p.m. for 5min, and taken The supernatant was used as a sample.

Embodiment 3

[0040] Embodiment 3 Ultra-thin CaIn of the present invention 2 S 4 Preparation of Nanosheets (3)

[0041]Dissolve 0.2643g of calcium acetate monohydrate and 0.6635g of anhydrous indium chloride in a round bottom flask filled with 250mL of deionized water, stir at room temperature for 30min, then add 0.6010g of thioacetamide and stir until dissolved, then place the round Put the bottom flask into an oil bath and heat up to 95°C, and stir vigorously for 5 hours. The resulting suspension was centrifuged at a speed of 9000r.p.m. for 3min, the precipitate was collected and washed twice with deionized water, dispersed in 200mL of deionized water again, ultrasonically stripped at 40KHz and 300W for 30min, and then centrifuged at a speed of 6000r.p.m. for 5min, and the The supernatant was used as a sample.

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Abstract

The invention relates to an ultrathin CaIn2S4 nanosheet photocatalytic material and a preparation method thereof. CaIn2S4 is synthesized by using a low-temperature reflux method, an ultrathin nanosheet is prepared by combining ultrasonic stripping, the thickness of the obtained ultrathin nanosheet is 4-5nm, the ultrathin nanosheet is of a double-layer structure, the transverse size is 0.8-1.3 [mu]m, and the specific surface area is 40-45m<2> / g. The visible light absorption range of the prepared photocatalytic material can reach 600nm, the photocatalytic material has good visible light absorption performance, free radicals such as .O2<->, .OH and <1>O2 can be generated under visible light irradiation, and escherichia coli, staphylococcus aureus and drug-resistant staphylococcus aureus can be effectively killed within a short time.

Description

technical field [0001] The invention relates to the technical field of photocatalytic materials, in particular, an ultra-thin CaIn 2 S 4 Nanosheet photocatalytic material and preparation method thereof. Background technique [0002] In 2020, with the outbreak of novel coronavirus pneumonia (COVID-19), public health and medical services have experienced unprecedented challenges. People are paying more and more attention to environmental sanitation, and residents' awareness of disinfection has also increased significantly. Nanomaterials have broad application prospects in the fields of virus prevention and treatment, medical hygiene, surface disinfection, and food packaging, and their antibacterial properties have once again become a research hotspot. At present, there are many kinds of products in the domestic antibacterial disinfectant market, among which alcohol and chlorine disinfection products are the main ones, such as 84 disinfectant, 75% alcohol disinfectant and ClO...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04B01J35/02B01J35/10B82Y30/00B82Y40/00C01G15/00A01N59/16A01N59/06A01P1/00C01B3/04C02F1/30C02F101/30B01J35/00
CPCB01J27/04C01G15/006B82Y30/00B82Y40/00A01N59/16A01N59/06C01B3/042C02F1/30C01P2002/82C01P2004/03C02F2101/30C02F2305/10B01J35/40B01J35/613B01J35/39Y02E60/36
Inventor 徐晓翔王冉金姝闫佩毅
Owner SHANGHAI PUTUO DISTRICT PEOPLES HOSPITAL
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