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Preparation method of visible light response SnIn4S8 nanoparticle/TiO2 nanobelt core-shell type composite photocatalyst

A nanoparticle and nanobelt technology, applied in physical/chemical process catalysts, chemical instruments and methods, light water/sewage treatment, etc., to achieve high-efficiency transfer, increase light quantum yield, and low cost

Inactive Publication Date: 2020-06-09
JIANGSU UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] After verification, there is no information about SnIn 4 S 8 Nanoparticles / TiO 2 Preparation of Nanobelt Core-Shell Composite Photocatalyst and Its Catalytic Degradation of Dye Methyl Orange MO, Tetracycline Hydrochloride TC or Photocatalytic Reduction of Heavy Metal Ion Cr(VI) under Visible Light

Method used

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  • Preparation method of visible light response SnIn4S8 nanoparticle/TiO2 nanobelt core-shell type composite photocatalyst
  • Preparation method of visible light response SnIn4S8 nanoparticle/TiO2 nanobelt core-shell type composite photocatalyst
  • Preparation method of visible light response SnIn4S8 nanoparticle/TiO2 nanobelt core-shell type composite photocatalyst

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Effect test

example 1

[0029] (1) Weigh 4.0798g TiO 2 The nanobelts were added to 80mL ethylene glycol and water with a volume ratio of 1:1 ethylene glycol aqueous solution, stirred for 30 minutes, and ultrasonically treated for 30 minutes to form a uniform milky white TiO 2 Suspension.

[0030] (2) 4mmol: 16mmol: 40mmol is weighed successively by weighing tin tetrachloride pentahydrate, indium chloride and thioacetamide to the uniform TiO obtained in step (1) according to the ratio of substances. 2 In the suspension, stir for 30 minutes, after ultrasonic treatment for 30 minutes, transfer the suspension to a hydrothermal reaction kettle, and conduct a hydrothermal reaction at 120°C for 20 hours. After the reaction is completed, wait for it to cool to room temperature, recover, wash, and dry , the visible-light-responsive SnIn 4 S 8 Nanoparticles / TiO 2 Nanoribbon core-shell composite photocatalyst, in which TiO 2 The mass percentage of nanobelts in the composite structure is 55%.

[0031] atta...

example 2

[0035] (1) Weigh 0.2504g TiO 2 The nanobelts were added to 30mL of ethylene glycol and water with a volume ratio of 1:0.5 in an aqueous ethylene glycol solution, stirred for 20 minutes, and ultrasonically treated for 15 minutes to form a uniform milky white TiO 2 Suspension.

[0036] (2) According to the molar ratio of substances, it is 0.2mmol: 0.8mmol: 3mmol, which takes successively weighed tin tetrachloride pentahydrate, indium chloride and thioacetamide and adds them to the uniform TiO obtained in step (1). 2 In the suspension, stir for 30 minutes, after ultrasonic treatment for 20 minutes, transfer the suspension to a hydrothermal reaction kettle, and conduct a hydrothermal reaction at 140°C for 20 hours. After the reaction is completed, wait for it to cool to room temperature, recover, wash, and dry , the visible-light-responsive SnIn 4 S 8 Nanoparticles / TiO 2 Nanoribbon core-shell composite photocatalyst, in which TiO 2 The mass percentage of nanobelts in the comp...

example 3

[0045] (1) Weigh 0.9736g TiO 2 The nanobelts were added to 50mL of ethylene glycol and water with a volume ratio of 1:0.6 in an aqueous ethylene glycol solution, stirred for 25 minutes, and ultrasonically treated for 25 minutes to form a uniform milky white TiO 2 Suspension.

[0046] (2) According to the molar ratio of substances, it is 0.5mmol: 2mmol: 5mmol successively weighs tin tetrachloride pentahydrate, indium chloride and thioacetamide and joins the uniform TiO obtained in step (1). 2 In the suspension, stir for 20 minutes, after ultrasonic treatment for 20 minutes, transfer the suspension to a hydrothermal reaction kettle, and conduct a hydrothermal reaction at 180°C for 4 hours. After the reaction is completed, wait for it to cool to room temperature, recover, wash, and dry , the visible light responsive SnIn 4 S 8 Nanoparticles / TiO 2 Nanoribbon core-shell composite photocatalyst, in which TiO 2 The mass percentage of nanobelts in the composite structure is 70%. ...

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Abstract

The invention belongs to the technical field of inorganic nano composite materials, and discloses a preparation method of a visible light response SnIn4S8 nanoparticle / TiO2 nanobelt core-shell type composite photocatalyst. The preparation method comprises the following steps: firstly, dispersing TiO2 nanobelt into an ethylene glycol aqueous solution; sequentially adding tin chloride pentahydrate,indium chloride and thioacetamide; growing the snIn4S8 nanoparticles on the surface of the TiO2 nanobelt through a solvothermal method, and constructing the visible light response SnIn4S8 nanoparticle / TiO2 nanobelt core-shell type composite photocatalyst, which can be used for degrading methyl orange and tetracycline hydrochloride or photoreducing Cr (VI) under visible light. According to the composite photocatalyst constructed by the method, the light absorption range is widened, a photo-induced electron linear transmission path is provided, the separation efficiency of photo-induced electronpairs is improved, the active sites of the reaction are increased, and the photocatalytic efficiency and the stability are greatly improved. The method disclosed by the invention has the advantages of environment-friendly preparation raw materials, simple method, mild hybridization reaction conditions, short period, low cost and the like, and has a great application prospect in the aspect of water body pollution treatment.

Description

technical field [0001] The invention relates to a visible light responsive SnIn 4 S 8 Nanoparticles / TiO 2 The invention discloses a preparation method and application of a nanobelt core-shell type composite photocatalyst, which belongs to the application in the field of preparation of nanocomposite materials and control of environmental pollutants. Background technique [0002] With the improvement of people's living standards and the progress of industry, various pollutants are inevitably discharged into water bodies. The traditional sewage treatment technology has high cost and long period, which is not enough to solve the increasingly serious water pollution problem. Therefore, it is imminent to develop new sewage treatment technology. [0003] TiO since 1972 2 Since the discovery of photocatalytic performance, photocatalytic technology has the advantages of low energy consumption, no secondary pollution, and broad application prospects, which has become a hot field o...

Claims

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Application Information

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IPC IPC(8): B01J27/04B01J35/10C02F1/30C02F101/22C02F101/38
CPCC02F1/30B01J27/04C02F2101/22C02F2101/38C02F2101/40C02F2305/10B01J35/396B01J35/61B01J35/39
Inventor 蒋银花王啟源张申周二帅王俊张文莉
Owner JIANGSU UNIV
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