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Foamed nickel substrate in-situ loaded titanium dioxide nanowire array material as well as preparation method and application thereof

A nanowire array, titanium dioxide technology, applied in chemical instruments and methods, catalyst activation/preparation, metal/metal oxide/metal hydroxide catalysts, etc. Reaction sites and other issues, to achieve the effect of mild conditions, close connection and low cost

Active Publication Date: 2021-05-14
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Growing titanium dioxide on FTO conductive glass is the most commonly used method at present. The preparation method is simple and green, but the specific surface area of ​​conductive glass is not large, and it cannot provide enough reaction sites for titanium dioxide.

Method used

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  • Foamed nickel substrate in-situ loaded titanium dioxide nanowire array material as well as preparation method and application thereof
  • Foamed nickel substrate in-situ loaded titanium dioxide nanowire array material as well as preparation method and application thereof
  • Foamed nickel substrate in-situ loaded titanium dioxide nanowire array material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for preparing a nickel foam substrate in-situ loaded titanium dioxide nanowire array material, the steps are as follows:

[0032] (1) The nickel foam with a width of 1 cm and a length of 4 cm was sequentially immersed in 15 mL of 1 mol / L hydrochloric acid, deionized water, acetone and absolute ethanol, ultrasonically cleaned at 30 °C for 5 min, and placed in Dry in an oven at 60°C until completely dry.

[0033] (2) Stir in 3 mL of glycerol, 0.5 mL of tetrabutyl titanate and 27 mL of absolute ethanol at room temperature until a uniform mixture is formed. Then transfer it to a 50 mL polytetrafluoroethylene reactor, add the pretreated dry nickel foam, and conduct a hydrothermal reaction at 180 °C for 12 h.

[0034] (3) The hydrothermal product was taken out, washed with ethanol three times, and dried at 60°C for 30 min to obtain the material precursor 1 of titanium dioxide nanowire array supported in situ on a nickel foam substrate.

[0035] (4) Put the precurso...

Embodiment 2

[0037] A method for preparing a nickel foam substrate in-situ loaded titanium dioxide nanowire array material, the steps are as follows:

[0038] (1) The nickel foam with a width of 1 cm and a length of 4 cm was sequentially immersed in 15 mL of 1 mol / L hydrochloric acid, deionized water, acetone and absolute ethanol, ultrasonically cleaned at 30 °C for 5 min, and placed in Dry in an oven at 60°C until completely dry.

[0039] (2) Add 5 mL of glycerol and 0.5 mL of tetrabutyl titanate to 25 mL of absolute ethanol, and stir at room temperature until a uniform mixture is formed. Then transfer it to a 50 mL polytetrafluoroethylene reactor, add pretreated dry nickel foam, and conduct a hydrothermal reaction at 180°C for 12 hours.

[0040] (3) The hydrothermal product was taken out, washed with ethanol three times, and then dried at 60°C for 30 minutes to obtain the material precursor 2 of titanium dioxide nanowire array supported in situ on a nickel foam substrate.

[0041] (4) ...

Embodiment 3

[0043] A method for preparing a nickel foam substrate in-situ loaded titanium dioxide nanowire array material, the steps are as follows:

[0044] (1) The nickel foam with a width of 1 cm and a length of 4 cm was sequentially immersed in 15 mL of 1 mol / L hydrochloric acid, deionized water, acetone and absolute ethanol, ultrasonically cleaned at 30 °C for 5 min, and placed in Dry in an oven at 60°C until completely dry.

[0045] (2) Mix 10 mL of glycerol, 0.5 mL of tetrabutyl titanate and 20 mL of absolute ethanol at room temperature until a uniform mixture is formed. Then transfer it to a 50 mL polytetrafluoroethylene reactor, add the pretreated dry nickel foam, and conduct a hydrothermal reaction at 180 °C for 12 h.

[0046] (3) The hydrothermal product was taken out, washed three times with ethanol, and dried at 60 °C for 30 min to obtain the precursor 3 of titanium dioxide nanowire array material supported in situ on a nickel foam substrate.

[0047] (4) Put the precursor ...

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Abstract

The invention belongs to the technical field of semiconductors, and particularly discloses a preparation method of an in-situ loaded titanium dioxide nanowire array by taking foamed nickel as a substrate, which comprises the following steps: (1) putting the foamed nickel in an ethanol solution containing glycerol and tetrabutyl titanate for hydrothermal reaction; (2) after the reaction is completed, sequentially cleaning and drying the obtained product to obtain a precursor; and (3) calcining the obtained precursor to obtain the foamed nickel substrate in-situ loaded titanium dioxide nanowire array material. The method for preparing the foamed nickel substrate in-situ loaded titanium dioxide nanowire array material has the advantages of greenness, low-temperature safety and the like, and the prepared material improves the light absorption efficiency and the electron transfer efficiency, has a larger specific surface area and has a huge application prospect.

Description

technical field [0001] The invention belongs to the technical field of semiconductors, and in particular relates to an in-situ-supported titanium dioxide nanowire array material on a foamed nickel substrate suitable for photocatalytic materials and solar cell electrode materials and a preparation method thereof. Background technique [0002] As a new green material, titanium dioxide has excellent photoresponse ability, good stability and non-toxicity, and has huge potential application value, so it has attracted the attention of scientific researchers. However, titanium dioxide itself has many deficiencies, and people need to use various methods to modify it so that it can be used better by people. Titanium dioxide mainly has one-dimensional and two-dimensional morphology, and its performance is related to its morphology, crystallinity and size. Under the same conditions, the one-dimensional titanium dioxide material has a larger specific surface area, has better photocatal...

Claims

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Application Information

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IPC IPC(8): B01J23/755B01J35/06B01J37/10H01G9/042H01G9/20
CPCB01J23/755B01J37/10H01G9/2031H01G9/20B01J35/58B01J35/40B01J35/39Y02E10/542
Inventor 杨思源李铭立唐城阳罗娜全锦霞高琼芝蔡欣张声森方岳平
Owner SOUTH CHINA AGRI UNIV
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