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A preparation method of zinc titanate quantum dots loaded titanium dioxide nanobelts

A technology of titanium dioxide and quantum dots, applied in the field of material chemistry, can solve the problems of unreported photocatalytic performance and achieve the effects of stable shape control, cheap raw materials, and simple process

Inactive Publication Date: 2016-01-20
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Du Guojun et al. synthesized flower-like ZnO-modified TiO 2 Nanoribbon structure (Du Guojun, Wang Yanmin, Hu Peiguang, Liu Hong, Liu Duo, Wang Jiyang. Rare Metals. 2009, 6, 836); Su Bitao and others synthesized ZnTiO by sol-gel process 3 -TiO 2 Composite nanospheres, found that its photocatalytic degradation efficiency of methylene blue is higher than that of pure TiO 2 and ZnO (Su Bitao, Zhu Pingwu, Xu Jingjing, Zhao Li. Applied Chemistry. 2011,1,33), and ZnTiO 3 Nanoparticles (quantum dots) modified TiO 2 Nanobelts and their photocatalytic properties have not been reported

Method used

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  • A preparation method of zinc titanate quantum dots loaded titanium dioxide nanobelts
  • A preparation method of zinc titanate quantum dots loaded titanium dioxide nanobelts
  • A preparation method of zinc titanate quantum dots loaded titanium dioxide nanobelts

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Synthesis of ZnTiO3 quantum dots modified TiO2 nanobelts:

[0021] First, add 0.8mol sodium hydroxide and 6mmol nano-titanium dioxide into 80mL deionized water, stir evenly, then transfer the mixed solution into a hydrothermal reaction kettle with polytetrafluoroethylene, tighten the seal, and put it in 180 o C constant temperature oven left to react for 10 hours; then the reaction product was repeatedly washed with deionized water until the pH value was 8; then washed 4 times with 0.2mol / L hydrochloric acid; the cleaned product was ultrasonically dispersed in the zinc nitrate aqueous solution, and Stirring was continued for 12 hours; the product was centrifuged to obtain a precipitate, which was dried in an oven at 60°C; finally, the dried powder was calcined in a muffle furnace at 600°C for 5 hours to obtain ZnTiO 3 Quantum dot modified TiO 2 nanobelt.

[0022] figure 1 It shows that the generated product contains ZnTiO 3 and TiO 2 two phases; figure 2 It shows...

Embodiment 2

[0024] Repeat Example 1, but replace nano titanium dioxide and zinc nitrate with n-butyl titanate and zinc chloride respectively to obtain ZnTiO 3 Quantum dot modified TiO 2 nanobelt. Figure 4 (c) shows that the degradation rate of methyl orange using the sample as an ultraviolet photocatalyst for 40 minutes is 93.4%.

Embodiment 3

[0026] Repeat Example 1, but replace nanometer titanium dioxide and zinc nitrate with titanium isopropoxide and zinc acetate respectively, obtain ZnTiO 3 Quantum dot modified TiO 2 nanobelt. Figure 4 (d) shows that the degradation rate of methyl orange using the sample as an ultraviolet photocatalyst for 40 minutes is 91.2%.

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Abstract

The invention relates to a preparation method of a zinc titanate quantum dot-loaded titanium dioxide nano ribbon. The preparation method comprises the steps: adding strong base and nano titanium dioxide or an organic titanium-containing precursor in deionized water, uniformly stirring to obtain a mixed solution and then transferring the mixed solution into a hydrothermal reaction kettle filled with polytetrafluoroethylene, screwing for sealing, standing in a constant-temperature oven and reacting; repeatedly cleaning a reaction product with the deionized water until the pH value is 7-8; cleaning by using hydrochloric acid; dispersing a cleaned product in a water solution of zinc salt, and continuously stirring; centrifugally separating to obtain a sediment, and drying the sediment; and calcining a powder body in a muffle furnace with a temperature of 450-700 DEG C for 3-8 hours after the drying to obtain the zinc titanate quantum dot-loaded titanium dioxide nano ribbon. According to the preparation method, raw materials are low in price, no surfactant is added in the synthesis process, the process is simple, and the shape of a synthetic material is controlled stably. A obtained product can be applied to the fields of solar cells, photocatalysts, and gas sensitive sensors.

Description

technical field [0001] The invention relates to a preparation method of a nanobelt, in particular to a chemical preparation method of a titanium dioxide nanobelt loaded with zinc titanate quantum dots, and belongs to the technical field of material chemistry. Background technique [0002] Titanium dioxide is an important multifunctional oxide semiconductor material, which has important applications in photovoltaic devices, photocatalysis, gas sensing and biosensors. Growth of heterostructures on one-dimensional structured nano-TiO2 can change the surface energy band structure and tune the optoelectronic and catalytic properties of the material. At present, a variety of materials have been reported to modify the composite structure of titanium dioxide, such as Ag, Au, Ag 3 PO 4 Nanoparticle-modified TiO 2 Nanoribbon composite structure (W.J.Zhou, G.J.Du, P.G.Hu, G.H.Li, D.Z.Wang, H.Liu, J.Y.Wang, R.I.Boughton, DuoLiu, H.D.Jiang.J.Mater.Chem.2011,21,7937; Y.M.Wang, G.J.Du,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/06
Inventor 汪元元尹桂林何丹农
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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