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MnIn2S4/TiO2 nanotube bundle composite photo-anode material and preparation method and application thereof

An anode material, mnin2s4 technology, applied in the direction of nanotechnology, nanotechnology, metal material coating technology, etc., can solve the problems that Q235CS has no electronic energy storage effect, the photocurrent density is not very high, and the hydrothermal reaction time is long. Improved photocurrent response results, high preparation steps and technical feasibility, and reduced distance effects

Pending Publication Date: 2022-04-05
青岛迪恩特尚核新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, although some materials have suitable conduction band and valence band positions, they can be combined with TiO 2 Composite, but there are still some defects, among which CaIn 2 S 4 、MgIn 2 S 4 with TiO 2 The photocurrent measured after recombination is only 50μA / cm 2 , indicating that the photoelectric conversion efficiency is low; AgInS 2 The synthesis steps are more complicated; CdIn 2 S 4 The hydrothermal reaction time is too long, the obtained photocurrent density is not very high, and it is CdIn in the dark state 2 S 4 When it is a photoanode, the measured potential value returns to the initial position, indicating that the material has no electronic energy storage effect on Q235 CS

Method used

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  • MnIn2S4/TiO2 nanotube bundle composite photo-anode material and preparation method and application thereof
  • MnIn2S4/TiO2 nanotube bundle composite photo-anode material and preparation method and application thereof
  • MnIn2S4/TiO2 nanotube bundle composite photo-anode material and preparation method and application thereof

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Experimental program
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Embodiment 1

[0036] TiO 2 Preparation of nanotube bundles:

[0037] ① Pretreatment of titanium substrate: before chemical polishing of the surface of titanium substrate, the pretreatment operation of tablet pressing on the operating table of the tablet press, absolute ethanol and distilled water were ultrasonically cleaned for 30 minutes, and the titanium foil (10mm×30mm×0.1 mm) smooth and clean surface. The titanium substrate was then placed in a solution of 0.9 g NH 4 F, 5mL H 2 O, 12mL HNO 3 and 12mL H 2 o 2 React in the chemical polishing solution configured for about 30s. Take them out one by one, rinse them with absolute ethanol and pure water alternately, and store them in absolute ethanol solution for later use.

[0038] ②TiO2 2 Preparation of nanotube bundle thin film: the traditional two-electrode system is composed of the taken out titanium sheet as the working electrode and the platinum sheet as the counter electrode in 80ml ethylene glycol, 0.44g NH 4 F and 8ml H 2 I...

Embodiment 2

[0049] TiO 2 Preparation of nanotube bundles:

[0050] ① Pretreatment of titanium substrate: before chemical polishing of the surface of titanium substrate, the pretreatment operation of tablet pressing on the operating table of the tablet press, absolute ethanol and distilled water were ultrasonically cleaned for 30 minutes, and the titanium foil (10mm×30mm×0.1 mm) smooth and clean surface. The titanium substrate was then placed in a solution of 0.9 g NH 4 F, 5mL H 2 O, 12mL HNO 3 and 12mL H2 o 2 React in the chemical polishing solution configured for about 30s. Take them out one by one, rinse them with absolute ethanol and pure water alternately, and store them in absolute ethanol solution for later use.

[0051] ②TiO2 2 Preparation of nanotube bundle thin film: the traditional two-electrode system is composed of the taken out titanium sheet as the working electrode and the platinum sheet as the counter electrode in 80ml ethylene glycol, 0.44g NH 4 F and 8ml H 2 In ...

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Abstract

The invention relates to the field of photoelectrochemical anticorrosion protection, in particular to a MnIn2S4 / TiO2 nanotube bundle composite photo-anode material as well as a preparation method and application of the MnIn2S4 / TiO2 nanotube bundle composite photo-anode material. The method comprises the following steps: growing a TiO2 nanotube bundle on a titanium substrate through an electrochemical anodic oxidation method; and modifying the MnIn2S4 quantum dots on the TiO2 nanotube bundle bundle by adopting a hydrothermal method to obtain the MnIn2S4 / TiO2 nanotube bundle bundle composite photo-anode material. According to the MnIn2S4 / TiO2 nanotube bundle composite photo-anode obtained by the invention, the coupled mixed potential is far lower than the self-corrosion potential of 304 stainless steel. The surface of a metal matrix is properly modified, and cathodic protection of the 304 stainless steel is realized in simulated seawater under visible light.

Description

technical field [0001] The invention relates to the field of photoelectrochemical anticorrosion protection, in particular to a MnIn 2 S 4 / TiO 2 Nanotube bundle composite photoanode material and its preparation method and application. Background technique [0002] Corrosion is a process in which materials are damaged or deteriorated due to physical, chemical or electrochemical reactions in the process of contact with the surrounding medium. According to the results of the national corrosion survey hosted by Academician Hou Baorong, in 2014 my country's economic The loss accounted for about 3.34% of the GDP of the year, and the marine corrosion loss of major projects such as cross-sea bridges, port terminals, and offshore wind power accounted for about one-third of the total corrosion loss, exceeding 700 billion yuan. On the other hand, marine corrosion threatens personal safety and the marine ecological environment. Therefore, the development of blue economy requires atten...

Claims

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Application Information

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IPC IPC(8): C23F13/12C25D11/26C23C26/00B82Y40/00B82Y30/00
Inventor 王宁侯保荣张冉李莹王静刘娟赵倩玉
Owner 青岛迪恩特尚核新材料科技有限公司
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