Unlock instant, AI-driven research and patent intelligence for your innovation.

NH2-MIL-125/TiO2 composite photo-anode material as well as preparation method and application thereof

A technology of NH2-MIL-125 and anode material, which is applied in the field of NH2-MIL-125/TiO2 composite photoanode material and its preparation

Active Publication Date: 2020-10-23
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
View PDF2 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] TiO 2 Because of its low toxicity, chemical stability, low cost, and easy preparation, it is widely used in photocatalysis, batteries, sensors and other fields, while its high photogenerated carrier recombination rate and only 5% of the sun's ultraviolet rays The characteristic of photoresponse limits its application

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
  • NH2-MIL-125/TiO2 composite photo-anode material as well as preparation method and application thereof
  • NH2-MIL-125/TiO2 composite photo-anode material as well as preparation method and application thereof
  • NH2-MIL-125/TiO2 composite photo-anode material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A method for preparing a photoanode material, comprising the following steps:

[0046] First, the titanium substrate is polished, and the titanium substrate with a thickness of 0.1cm and a purity of 99.9% is cut into a flat 1×4cm 2 Titanium sheet, pay attention to avoid new scratches, wash the titanium sheet alternately with deionized water and ethanol, and dry it for later use. Take 4.5gNH 4 Dissolve F in 25mL of deionized water and mix it uniformly by ultrasonic. Take 60mL of concentrated nitric acid and 60mL of 30% H in a fume hood 2 o 2 , followed by pouring the above NH 4 The F solution is mixed evenly by ultrasonic to form a polishing solution for later use. Take the cleaned titanium sheet and put it in the polishing solution (the amount of polishing solution should not exceed the titanium sheet), wait for 45 seconds, take out the titanium sheet, wash it in deionized water and store it in ethanol. After polishing, use deionized Water and ethanol were ultrason...

Embodiment 2

[0055] A method for preparing a photoanode material, comprising the following steps:

[0056] Firstly, the conductive glass substrate is cleaned, and the conductive glass is cut into 1×4cm 2 The slices were ultrasonically cleaned with acetone, ethanol, and ultrapure water in sequence, and repeated 3 times until they were clean. Put the cleaned conductive glass into absolute ethanol for later use.

[0057] Then prepare TiO 2Sol, take 52mL of absolute ethanol, 17.02mL of tetrabutyl titanate, 4.79mL of diethanolamine, stir for 1h to make solution A, take 1.8g of ultrapure water and 25mL of absolute ethanol to make solution B, under continuous stirring, Add solution B to solution A drop by drop at a rate of 3 drops per second, continue to stir for 2 hours, and leave to age for 24 hours to form a stable sol for later use.

[0058] Then, the coating is carried out on a dipping and pulling machine by dipping and pulling. Take out the conductive glass with clean tweezers, clamp it...

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

No PUM Login to View More

Abstract

The invention relates to a composite film photo-anode, in particular to an NH2-MIL-125 / TiO2 composite photo-anode material as well as a preparation method and application thereof. According to the preparation method disclosed by the invention, NH2-MIL-125 particles are loaded on a TiO2 film by virtue of a solvothermal method, so that the NH2-MIL-125 / TiO2 composite photo-anode is obtained. According to the TiO2 photo-anode compounded by NH2-MIL-125, the utilization rate of visible light is increased, and the recombination rate of electron-hole pairs is reduced; and the potential of 304 stainless steel coupled with the TiO2 photo-anode can be greatly reduced to be lower than the self-corrosion potential under visible light irradiation, the excellent photo-generated cathode protection performance is shown, and metal corrosion is effectively retarded or inhibited.

Description

technical field [0001] The invention relates to a composite film photoanode, in particular to a NH 2 -MIL-125 / TiO 2 Composite photoanode material and its preparation method and application. Background technique [0002] The ocean is rich in resources. With the rapid development of the ocean economy, a large number of ocean engineering facilities such as ocean platforms and wharf steel piles are needed. However, marine construction has to face the problem of material corrosion. For example, although stainless steel has good corrosion resistance in the atmosphere, it is quickly corroded in a marine environment containing a large amount of chlorine salt. Photogenerated cathodic protection technology is a new type of environmental protection technology that uses the photovoltaic effect to protect metals from corrosion. Specifically, when the light conditions and energy conditions are suitable, the electrons in the valence band of the semiconductor are excited and separated to...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C23F13/12
CPCC23F13/12
Inventor 王秀通池丽凤南有博徐慧孙欣黄彦良
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI