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Preparation method for preparing stannic oxide nanorod cluster by using one-step hydrothermal method

A hydrothermal method and nanorod technology, which is applied in the field of semiconductor nanomaterial preparation, can solve the problems of high cost and complicated preparation process, and achieve the effects of low equipment requirements, simple operation and easy scale-up

Inactive Publication Date: 2015-04-22
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, people have prepared SnO with high orientation and various morphologies through various chemical, electrochemical and physical methods. 2 One-dimensional nanoparticles such as nanorods and nanotubes mainly include chemical methods such as sol-gel method, hydrothermal synthesis method, chemical precipitation method and physical methods such as sputtering method, vapor deposition method, plasma method, etc., but these The method generally has problems such as high cost and complicated preparation process.

Method used

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  • Preparation method for preparing stannic oxide nanorod cluster by using one-step hydrothermal method
  • Preparation method for preparing stannic oxide nanorod cluster by using one-step hydrothermal method
  • Preparation method for preparing stannic oxide nanorod cluster by using one-step hydrothermal method

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Experimental program
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Effect test

Embodiment 1

[0035] Such as figure 1 One-step hydrothermal preparation of SnO 2 As shown in the preparation process of nanorod clusters, tin tetrachloride pentahydrate (SnCl 4 ·5H 2 O) 0.1M and sodium hydroxide (NaOH) 1M were stirred until dissolved in 10mL deionized water to obtain Sn(OH) 6 2- Sol. Weigh 0.33M of the crystal growth directing agent cetyltrimethylammonium bromide (CTAB), dissolve it with 20mL of deionized water and 5mL of absolute ethanol, and dissolve it with the formed Sn(OH) 6 2- The sol is mixed into a uniform white microemulsion system. Stir for 30 minutes to combine the sol with the crystal growth director.

[0036] The above system was transferred to a 50mL polytetrafluoroethylene hydrothermal reaction kettle, and hydrothermally reacted at 220°C for 20 hours; due to the SnO 2 Anisotropy of crystal growth, crystals gradually grow into clusters of nanorods. After the reaction was completed, it was naturally cooled to room temperature, washed and filtered with ...

Embodiment 2

[0041]Weigh tin tetrachloride pentahydrate (SnCl 4 ·5H 2 O) 0.1M and potassium hydroxide (KOH) 0.1M were stirred until dissolved in 10mL deionized water to obtain Sn(OH) 6 2- Sol. Weigh 0.7M of the crystal growth directing agent cetyltrimethylammonium bromide (CTAB), dissolve it with 15mL of deionized water and 15mL of absolute ethanol, and mix with the formed Sn(OH) 6 2- The sol is mixed into a uniform white microemulsion system. Stir for 50 minutes to combine the sol with the crystal growth director.

[0042] The above system was transferred to a 50mL polytetrafluoroethylene hydrothermal reaction kettle, and hydrothermally reacted at a temperature of 120°C for 48 hours; due to the SnO 2 Anisotropy of crystal growth, crystals gradually grow into clusters of nanorods. After the reaction was completed, it was naturally cooled to room temperature, washed and filtered with deionized water and ethanol, and dried to obtain a white powder.

[0043] The resulting sample is a ...

Embodiment 3

[0045] Weigh tin acetate (Sn(Ac) 4 ) 0.1M, potassium hydroxide (KOH) 5M and stirred until dissolved in 20mL deionized water to obtain Sn(OH) 6 2- Sol. Weigh 0.1M sodium dodecyl sulfate (SDS), a crystal growth directing agent, dissolve it with 8 mL of n-heptane and 12 mL of amyl alcohol, and mix with the formed Sn(OH) 6 2- The sol is mixed into a uniform white microemulsion system. Stir for 20 minutes to combine the sol with the crystal growth director.

[0046] The above system was transferred to a 50mL polytetrafluoroethylene hydrothermal reaction kettle, and hydrothermally reacted at a temperature of 260°C for 8 hours; due to the SnO 2 Anisotropy of crystal growth, crystals gradually grow into clusters of nanorods. After the reaction was completed, it was naturally cooled to room temperature, washed and filtered with deionized water and ethanol, and dried to obtain a white powder.

[0047] The resulting sample is a homogeneous SnO 2 The nanorod clusters have a unifor...

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Abstract

The invention relates to a preparation method for preparing a SnO2 nanorod cluster by using a one-step hydrothermal method. The method comprises the following steps: respectively dissolving a stannum source and an alkali in deionized water, dissolving a crystal growth guide agent in a mixed solution of deionized water and ethanol, uniformly mixing the stannum solution and alkali solution, dripping the crystal growth guide agent for stirring so as to form Sn(OH)62-sol; carrying out a hydrothermal reaction at the temperature of 120-260 DEG C, so that the crystal center grows according to a certain crystal orientation; and naturally cooling to room temperature after the reaction is ended, filtering, washing, drying, thereby obtaining the product. The hydrothermal synthesis method disclosed by the invention is low in equipment requirement, easy to operate and easy for large-scale production. The various used solvents are environmentally friendly, and toxic substances are not produced; and the prepared SnO2 nanorod cluster has the properties of large specific surface area and high orientation and has wide application prospects in the aspects of catalyst carriers, gas detection, field emission microelectronic devices and lithium ion battery electrodes.

Description

technical field [0001] The invention belongs to the field of preparation of semiconductor nanomaterials, in particular to a one-step hydrothermal method for preparing SnO 2 Preparation method of nanorod clusters. Background technique [0002] In recent years, various forms of semiconducting nanomaterials have received increasing research interest from scientists due to their broad applications in chemical detection, recyclable power electrodes, integrated circuits, and solar cells. The rod-cluster structure of nanometer-scale one-dimensional semiconductor materials can be used to prepare gas-sensing sensing materials and catalytic carriers due to their large specific surface area and highly oriented properties. [0003] Tin dioxide (SnO 2 ) is an important semiconductor material with a wide range of applications. Recent studies have shown that SnO 2 Nanostructures have unique optical properties, electrical properties, chemical stability, etc., so they have shown attracti...

Claims

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Application Information

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IPC IPC(8): C01G19/02B82Y30/00B82Y40/00
CPCC01G19/02C01P2002/72C01P2004/03C01P2004/04C01P2004/16C01P2004/50C01P2004/62
Inventor 李新刚柴澍靖崔丽凤
Owner TIANJIN UNIV
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