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A method for preparing tin dioxide quantum dots with visible light response

A technology of tin dioxide and quantum dots, applied in the field of materials, can solve the problems of large particle size of nano-tin dioxide nanoparticles, extremely high requirements, complex reaction steps, etc., and achieve a simple preparation process, low price, safe and reliable operation. Effect

Active Publication Date: 2018-08-14
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods either need expensive experimental equipment, or require complicated reaction steps, or have extremely high requirements on the experimental environment, and there is also a major defect in these methods, that is, the prepared nano-tin dioxide nanoparticles have different particle sizes. bigger

Method used

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  • A method for preparing tin dioxide quantum dots with visible light response
  • A method for preparing tin dioxide quantum dots with visible light response
  • A method for preparing tin dioxide quantum dots with visible light response

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Steps: Weigh 300mg SnI 4 , into 15mL of deionized water (mass ratio 1:0.05), stirring continuously. The reaction was carried out in an open system, and the reaction temperature was 30°C. After reacting for 1.5 hours, the reaction was terminated, and a white precipitate was formed in the reaction vessel. The product was filtered with suction, washed with water, and dried in air at room temperature.

Embodiment 2

[0026] Steps: Weigh 300mg SnI 4 , into 300mL of deionized water (mass ratio 1:1), stirring continuously. The reaction was carried out in an open system, and the reaction temperature was 30°C. After reacting for 1.5 hours, the reaction was terminated, and a white precipitate was formed in the reaction vessel. The product was filtered with suction, washed with water, and dried in air at room temperature.

Embodiment 3

[0028] Steps: Weigh 300mg SnI 4 , into 30L of deionized water (mass ratio 1:1000), stirring continuously. The reaction was carried out in an open system, and the reaction temperature was 30°C. After reacting for 1.5 hours, the reaction was terminated, and a white precipitate was formed in the reaction vessel. The product was filtered with suction, washed with water, and dried in air at room temperature.

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Abstract

The invention provides a method for preparing stannic oxide quantum dots with visible light responses.The method includes the steps that tin tetrahalide is slowly added to deionized water, stirring is conducted for 1 min to 10 h at room temperature, tin tetrahalide and the deionized water fully react, white precipitates are generated in a system, the white precipitates are washed and dried at normal temperature, and the stannic oxide quantum dots can be obtained, wherein the grain diameter of the stannic oxide quantum dots is about 2-5 nm.The preparation method is safe, environmentally friendly, low in cost, easy to operate and capable of achieving large-scale production, and can be carried out at normal pressure and mild temperature.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a method for preparing tin dioxide quantum dots. Background technique [0002] Tin dioxide (SnO 2 ) as a wide bandgap, direct bandgap N-type semiconductor material, its nanostructure in the transparent electrode (F.L.Wang, N.K.Subbaiyan, Q.Wang, C.Rochford, G.W.Xu, R.T.Lu, A.Elliot, F.D.souza , R.Q.Hui, J.Wu.Appl.Mater.Interfaces.2012, 4, 1565-1572), gas sensing (G.Lu, L.E.Ocola, J.Chen.Adv Mater.2009, 21, 2487-2491; F.Gyger, M.Hubner, C.Feldmann, N.Barsan, U.Weimar.Chem.Mater.2010, 22, 4821-4827), photocatalysis (H.Zhang, C.Hu.Catal.Commun.2011, 14, 32-36; Q.R.Zhao, Y.Gao, X.Bai, C.Z.Wu, Y.Xie.Eur.J.Inorg.Chem.2006, 1643-1648), lithium-ion batteries (Z.Wen, Q.Wang ,Q.Zhang,J.Li.Adv.Funct.Mater.2011,21,4120-4125; H.X.Zhang,C.Feng,Y.C.Zhai,K.L.Jiang,Q.Q.Li,S.S.Fan.Adv.Mater.2009,21, 2299-2304; G.Chen, Z.Wang, D.Xia.Chem.Mater.2008, 20, 6951-6956) and other fields have broad ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G19/02
CPCC01G19/02C01P2002/72C01P2004/04
Inventor 周莹李璞兰勇张骞于姗王芳
Owner SOUTHWEST PETROLEUM UNIV