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A method for preparing self-substrated sno2 nanorod arrays

A nanorod array and substrate technology, applied in the field of semiconductor nanomaterial preparation, can solve the problems of ineffective contact between the array and the substrate, inability to achieve miniaturized construction, complicated preparation process, etc., and achieve excellent gas-resistance sensitivity performance and equipment requirements. Low, easy-to-use effects

Inactive Publication Date: 2011-12-14
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

while SnO 2 There are only a few reports on arrays composed of one-dimensional structures, such as thermal evaporation method (Adv. Funct. Mater., 2005, 15, 57-62), zinc oxide template method (J. Mater. Chem., 2009, 19, 1019- 1023), and hydrothermal method (Nanoscale Res.Lett., 2010, 5, 1177-1181), (J.Mater.Chem., 2009, 19, 1859-1864), (CrystEngComm., 2010, 12, 4024- 4027), etc., but these methods generally have problems such as high cost, complicated preparation process, use of silicon or metal substrates so that the array and the substrate cannot be effectively contacted, and miniaturization cannot be achieved.

Method used

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  • A method for preparing self-substrated sno2 nanorod arrays
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  • A method for preparing self-substrated sno2 nanorod arrays

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Experimental program
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Effect test

Embodiment 1

[0026] Weigh a certain amount of SnCl 4 ·5H 2 Stir O (0.1M), NaOH (1M) until dissolved in 10mL deionized water, weigh the surfactant sodium dodecyl sulfate (SDS) 0.33M, dissolve it with 20mL n-heptane and 5mL n-pentanol Basic Sn 4+ The solution is mixed into a uniform white microemulsion system. Stir for 30 minutes to make SnO 2 Nanocrystals nucleate and self-assemble into SnO with the assistance of the system 2 thin layer substrate;

[0027] The above system was transferred to a 50mL polytetrafluoroethylene hydrothermal reaction kettle, and hydrothermally reacted at 220°C for 24 hours; due to the SnO 2 Anisotropy of crystal growth, growing as vertically aligned arrays of nanorods on the substrate. 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.

[0028] The scanning electron microscope (SEM) photos of the obtained sample surface are as follows: figu...

Embodiment 2

[0032] Weigh a certain amount of SnCl 4 ·5H 2Stir O (0.1M), NaOH (1M) until dissolved in 10mL deionized water, weigh the surfactant sodium dodecyl sulfate (SDS) 0.33M, dissolve it with 20mL n-heptane and 5mL n-pentanol Basic Sn 4+ The solution is mixed into a uniform white microemulsion system.

[0033] After stirring for 30 minutes, the obtained system was transferred to a 50 mL polytetrafluoroethylene hydrothermal reaction vessel, and subjected to a hydrothermal reaction at 220° C. for 6 hours, and grew into a vertically aligned nanorod array on the substrate. After the reaction was completed, it was naturally cooled to room temperature, the white precipitate was washed and filtered with deionized water and ethanol, and a white powder was obtained after drying.

[0034] Scanning electron microscopy (SEM) tests confirmed the growth of SnO 2 The nanorods are shorter in length, only 200nm arrays.

Embodiment 3

[0036] Weigh a certain amount of SnCl 4 ·5H 2 O (0.1M), NaOH (1M) were stirred until they were dissolved in 10mL of deionized water, and the surfactant sodium dodecyl sulfate (SDS) 0.16M was weighed, and dissolved with 20mL of n-heptane and 5mL of n-pentanol. Basic Sn 4+ The solution is mixed into a uniform white microemulsion system. Stir for 30 minutes to make SnO 2 Nanocrystals nucleate and self-assemble into SnO with the assistance of the system 2 Thin base.

[0037] The above system was transferred to a 50 mL polytetrafluoroethylene hydrothermal reaction kettle, and hydrothermally reacted at 220° C. for 24 hours. 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.

[0038] Scanning electron microscopy (SEM) tests confirmed that the array's several nanorod heads were bonded together. This shows that the reduction of the amount of surfactant SDS makes ...

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Abstract

The invention relates to a preparation method of a self-substrate SnO2 nanorod array, and the preparation method comprises: dissolving a tin source and sodium hydroxide in water, then adding an organic solvent containing a surfactant, uniformly mixing, then stirring for 10-50 minutes, and then carrying out hydrothermal reaction at the temperature of 100-300 DEG C for 1-50 hours; and after the reaction is finished, naturally cooling to room temperature, filtering, washing and drying to obtain the self-substrate SnO2 nanorod array. The preparation method provided by the invention has the advantages that: the hydrothermal synthesis method has relatively low equipment requirement, is relatively simple to operate and is easy to scale; the used solvents are environmentally-friendly and no toxicmaterials are produced; and the prepared self-substrate SnO2 nanorod array has excellent gas-resistance sensitivity and has broad application prospects in the aspects of gas detection, field emissionmicroelectronic devices, lithium ion battery electrodes and solar cells.

Description

technical field [0001] The invention belongs to the field of preparation of semiconductor nanomaterials, in particular to a self-substrate SnO 2 Preparation methods of nanorod arrays. 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 array structure of nanoscale one-dimensional semiconductor materials can be used to prepare nanodevices widely used in the microelectronics industry due to its large specific surface area, high orientation, excellent electron emission properties, and easy integration. [0003] SnO 2 It is the most widely used gas sensing material at present, with SnO 2 The gas sensor based on the gas sensor has been used in various industrial fields. It is the basis of the entire gas sensor industry and has been widely used in the dete...

Claims

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Application Information

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IPC IPC(8): C01G19/02B82Y40/00
Inventor 胡俊青张震宇邹儒佳余利唐明华
Owner DONGHUA UNIV
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