Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Core-shell structure Ag/TiO2/ZnO nanowire and preparation method for same

A core-shell structure and nanowire technology is applied in the field of core-shell structure Ag/TiO2/ZnO nanowires and their preparation, which can solve the problem of no Ag/TiO, and achieve the effect of improving stability and carrier separation efficiency.

Active Publication Date: 2017-07-14
ZHEJIANG UNIV
View PDF1 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Literature review results show that there is no Ag / TiO 2 / ZnO one-dimensional core-shell branched nanowire structure and its preparation method report

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Core-shell structure Ag/TiO2/ZnO nanowire and preparation method for same
  • Core-shell structure Ag/TiO2/ZnO nanowire and preparation method for same
  • Core-shell structure Ag/TiO2/ZnO nanowire and preparation method for same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) Preparation of Ag nanowires: Add 2.93g polyvinylpyrrolidone to 95mL glycerol, stir at 90°C for 1.5h, then stop heating, let it cool down to 50°C, add 0.79g silver nitrate; prepare 29.5mg chloride A mixed solution of sodium, 0.25mL deionized water, and 5mL glycerol, then put the mixed solution into the container, then raise the temperature to 210°C, react for a total of 40min, stop heating, take out, wash and separate to obtain of silver nanowires.

[0028] 2) Disperse 100mg silver nanowires in 40mL ethanol solution, then add 8mg polyvinylpyrrolidone, stir magnetically for 10min, then add 0.4mL tetrabutyl titanate and 0.6mL deionized water dropwise, continue stirring for 30min, Washed with water, dispersed in 10mL of deionized water, and hydrothermally reacted at 160°C for 12h to obtain core-shell structure Ag / TiO 2 Nanowires.

[0029] 3) Add 68.5mg of zinc acetate to 32mL of methanol, stir at 60°C for 40min, then add 16.5mL of methanol solution containing 27.5mg of...

Embodiment 2

[0033] 1) Same as step (1) of Example 1.

[0034] 2) Disperse 100mg silver nanowires in 40mL ethanol solution, then add 8mg polyvinylpyrrolidone, stir magnetically for 10min, then add 0.4mL tetrabutyl titanate and 0.6mL deionized water dropwise, continue stirring for 30min, Washed with water, dispersed in 10mL of deionized water, and hydrothermally reacted at 120°C for 12h to obtain core-shell structure Ag / TiO 2 Nanowires.

[0035] 3) Same as step (3) of Example 1.

[0036]4) Transfer the product obtained in step 3) to 30 mL of an aqueous solution containing 0.178 g of zinc nitrate and 0.084 g of hexamethylenetetramine, and stir at 80 °C for 1 h to obtain a core-shell structure Ag / TiO 2 / ZnO nanowires.

[0037] Figure 6 The field emission scanning electron microscope pictures show the successful acquisition of Ag / TiO 2 / ZnO one-dimensional core-shell branched nanowire structure.

Embodiment 3

[0039] 1) Same as step (1) of Example 1.

[0040] 2) Disperse 100mg of silver nanowires in 40mL of ethanol solution, then add 8mg of polyvinylpyrrolidone and magnetically stir for 10min, then add 0.4mL of tetrabutyl titanate and 0.6mL of deionized water dropwise, continue to stir for 30min, and use deionized water Wash, disperse into 10mL of deionized water, and conduct a hydrothermal reaction at 200°C for 8h to obtain a core-shell Ag / TiO 2 Nanowires.

[0041] 3) Same as step (3) of Example 1.

[0042] 4) Transfer the product obtained in step 3) to 30 mL of an aqueous solution containing 0.178 g of zinc nitrate and 0.084 g of hexamethylenetetramine, and stir at 90 ° C for 2 h to obtain a core-shell structure Ag / TiO 2 / ZnO nanowires.

[0043] Figure 7 The field emission scanning electron microscope pictures show the successful acquisition of Ag / TiO 2 / ZnO one-dimensional core-shell branched nanowire structure.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides core-shell structure Ag / TiO2 / ZnO nanowires, wherein a layer of TiO2 coats Ag nanowires externally and ZnO nanorods are inductively grown on the TiO2 layer. A preparation method includes the steps of: 1) dispersing silver nanowires in ethanol and adding tetrabutyl titanate and deionized water to perform a hydrothermal reaction to produce core-shell structure Ag / TiO2 nanowires; and 2) dispersing the core-shell structure Ag / TiO2 nanowires in zinc oxide sol, uniformly mixing the components and performing washing and separation, and adding the mixture to a mixed water solution of zinc nitrate and hexamethylene tetramine to perform a reaction to obtain the core-shell structure Ag / TiO2 / ZnO nanowires. The method achieves three-phase composition of one-dimensional Ag nanowires with TiO2 and ZnO, so that stability and charge carrier separation efficiency of the material are greatly improved. The photo-catalytic performance of the nanowires is significantly better than that of commercial Degussa P25 nanopowder, so that the nanowires have important application prospect in the fields of environment treatment with photo catalysis and dye-sensitized solar cells.

Description

technical field [0001] The invention relates to a core-shell structure Ag / TiO 2 The / ZnO nanometer wire and its preparation method are suitable for photocatalysis and dye-sensitized solar cells, and belong to the field of environmental protection energy. Background technique [0002] Semiconductor materials have a wide range of applications in the field of photocatalysis and energy. Among them, TiO 2 And ZnO has received widespread attention because of its low price, simple preparation, good biocompatibility, non-toxic and harmless. But these two materials have certain disadvantages, such as their large forbidden band width, which can only respond to the violet light band, and their fast recombination rate of photogenerated electron-hole pairs is not conducive to their photocatalytic performance. [0003] Optimizing nanomorphology and introducing heterojunctions are two effective modification methods. The one-dimensional nanowire structure can become a fast channel for p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01J23/50H01G9/20C02F1/32C02F101/34
CPCH01G9/20C02F1/32B01J23/002B01J23/50C02F2101/345C02F2305/10C02F2305/08B01J35/39Y02E10/542
Inventor 于洋吴进明
Owner ZHEJIANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com