Method for manufacturing photoelectrocatalysis double-function electrode with wide wave range response

A photocatalytic, bifunctional technology, applied in the field of material chemistry, can solve the problems of narrow spectral response range, difficult photocatalytic activity, and insufficient dispersion, and achieve stable electrocatalytic performance, improved photocatalytic performance, and high oxygen evolution potential. Effect

Inactive Publication Date: 2014-04-16
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But TiO 2 The energy band structure of the photocatalytic technology has limitations in the promotion process.
It has a wide band gap and a narrow spectral response range (Eg=3.2eV), and can only use the ultraviolet region that accounts for less than 5% of sunlight
But since this CdS nanoparticle in TiO 2 The dispersion on the film is not uniform enough, and it is difficult to obtain ideal photocatalytic activity

Method used

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  • Method for manufacturing photoelectrocatalysis double-function electrode with wide wave range response
  • Method for manufacturing photoelectrocatalysis double-function electrode with wide wave range response
  • Method for manufacturing photoelectrocatalysis double-function electrode with wide wave range response

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Prepare 0.01mol / L CdCl 2 and 0.01mol / L Na 2 For the precursor solution of S, a trisiloxane surfactant is added thereto in an amount of 0.5‰ of the total volume of the solution. Using the vacuum infusion method, TiO with a diameter of 50 nm and a thickness of 1 μm 2 Nanotubes filled with 0.05mol / L CdCl 2 and 0.05mol / L Na 2 S precursor solution, after repeating 3 times, the nanotubes were immersed in the two solutions respectively, and the immersion time was 30s each time. After each removal, the surface solution was wiped dry, and the process was repeated 15 times.

[0032] 10gSnCl 4 ·5H 2 O was dissolved in 50 mL of absolute ethanol containing 5 mL of concentrated hydrochloric acid, stirred thoroughly until clear, and then 0.5 g of SbCl was added 3 , fully stirred until clear, and placed in a dark place for 8 hours to obtain SnCl 4 ·5H 2 O and SbCl 3 Tin-antimony sol with a mass ratio of 20:1. in TiO 2 One side of the NTs / CdS was coated with tin-antimony sol...

Embodiment 2

[0035] Prepare 0.05mol / L CdCl 2 and 0.05mol / L Na 2 For the precursor solution of S, a trisiloxane surfactant is added thereto in an amount of 0.8‰ of the total volume of the solution. Using the vacuum infusion method, TiO with a diameter of 60 nm and a thickness of 1 μm 2 The nanotubes were respectively loaded with two kinds of precursor solutions. After repeating 3 times, the nanotubes were immersed in the two solutions respectively. The soaking time was 30s each time. After each removal, the surface solution was wiped dry, and the process was repeated 15 times.

[0036] 7.5gSnCl 4 ·5H 2 O was dissolved in 75 mL of absolute ethanol containing 7.5 mL of concentrated hydrochloric acid, stirred thoroughly until clear, and then 0.5 g of SbCl was added 3 , fully stirred until clarified, and placed in a dark place for precipitation for 12 hours to obtain SnCl 4 ·5H 2 O and SbCl 3 Tin-antimony sol with a mass ratio of 15:1. in TiO 2 One side of NTs / CdS was coated with tin-...

Embodiment 3

[0038] Prepare 0.05mol / L CdCl 2 and 0.05mol / L Na 2 For the precursor solution of S, add trisiloxane surfactant to it, and the added amount is 1‰ of the total volume of the solution. Using the vacuum infusion method, TiO with a diameter of 80 nm and a thickness of 2 μm 2 The nanotubes were respectively loaded with two kinds of precursor solutions. After repeating 3 times, the nanotubes were immersed in the two solutions respectively. The soaking time was 30s each time. After each removal, the surface solution was wiped dry, and the process was repeated 15 times.

[0039] 5gSnCl 4 ·5H 2 O was dissolved in 100 mL of absolute ethanol containing 10 mL of concentrated hydrochloric acid, stirred thoroughly until clear, and then 0.5 g of SbCl was added 3 , fully stirred until clear, and placed in a dark place for 16 hours to obtain SnCl 4 ·5H 2 O and SbCl 3 A tin-antimony sol with a concentration ratio of 10:1. in TiO 2 One side of the NTs / CdS was coated with tin-antimony so...

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Abstract

The invention relates to a method for manufacturing a photoelectrocatalysis double-function electrode with wide wave range response. The method comprises the following steps of: loading CdS on a TiO2 nano tube (TiO2 NTs) which is vertically grown on a metal titanium substrate and used as a carrier to achieve good photocatalysis performance in a visible light range, loading an antimony-doped SnO2 coating on one side of TiO2 NTs / CdS to achieve good electrocatalysis performance, and constructing to obtain a CdS / TiO2 NTs / SnO2 double-function electrode with a microstructure. Compared with the prior art, the invention has the advantages that the electrode has the excellent photocatalysis performance in an ultraviolet-visible light wide wave range and excellent electrocatalysis performance, and can treat environmental pollutant efficiently and stably.

Description

technical field [0001] The invention relates to the field of material chemistry, in particular to a preparation method of a photoelectric catalysis bifunctional electrode with wide wave range response. Background technique [0002] In recent years, with the rapid development of the economy, a large number of environmental problems have appeared with the characteristics of complex material structure and strong poisonous effect on living organisms. Photochemical oxidation technology and electrochemical oxidation technology can produce strong oxidizing OH free radicals through different ways, which have the characteristics of strong oxidation ability, high controllability, mild reaction conditions, etc., and become the best choice for dealing with environmental problems. Advanced oxidation treatment technology. Therefore, it is of great significance to combine the complementary advantages of these two technologies, organically combine them, give full play to their respective a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18H01L31/0224B01J27/04
CPCY02P70/50
Inventor 赵国华张亚男吴志远柴守宁
Owner TONGJI UNIV
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