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

Preparing method for Pd/Mn/TNTs photoelectrode for improving photogenerated charge separation and carbon dioxide reducing performance

A technology of carbon dioxide and photogenerated charges, applied in electrodes, electrolytic coatings, electrolytic processes, etc., can solve the problems of low utilization rate of visible light and poor separation of photogenerated charges, and achieve the effect of improving reduction performance and improving absorption

Active Publication Date: 2018-10-16
HARBIN INST OF TECH
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention will solve existing TiO 2 Photocatalytic reduction of CO by nanotube array photoelectrode 2 The technical problems of low utilization rate of visible light and poor separatio

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
  • Preparing method for Pd/Mn/TNTs photoelectrode for improving photogenerated charge separation and carbon dioxide reducing performance
  • Preparing method for Pd/Mn/TNTs photoelectrode for improving photogenerated charge separation and carbon dioxide reducing performance
  • Preparing method for Pd/Mn/TNTs photoelectrode for improving photogenerated charge separation and carbon dioxide reducing performance

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0018] Embodiment 1: In this embodiment, a method for preparing a Pd / Mn / TNTs photoelectrode that improves the separation of photogenerated charges and the reduction performance of carbon dioxide is carried out in the following steps:

[0019] 1. The pretreated metal Ti foil is used as the anode, the Pt sheet is used as the cathode, and the glycerol solution of ammonium fluoride is used as the electrolyte solution, and the metal Ti foil is treated by anodic oxidation method, and the anodic oxidation voltage is controlled at 5-20V. The oxidation time is 1-5h, take out the metal Ti foil, wash it with deionized water, dry it, put it into a muffle furnace, control the temperature at 100-800°C, and calcinate it for 2-10h to get TiO 2 nanotube arrays;

[0020] 2. Add acetic acid to KMnO 4 solution, magnetically stirred for 5 to 100 minutes, and then added the TiO obtained in step 1 2 The nanotube array is then immersed in a vacuum drying oven for 1 to 10 hours, taken out, and then ...

specific Embodiment approach 2

[0022] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in step 1, oxalic acid is used to pretreat the metal Ti foil. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0023] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the mass concentration of ammonium fluoride in the glycerol solution of ammonium fluoride in step 1 is 0.5%. Others are the same as in the first or second embodiment.

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 discloses a preparing method for a Pd/Mn/TNTs photoelectrode for improving photogenerated charge separation and carbon dioxide reducing performance, and relates to the field of a preparing method for a photogenerated charge separation improved photoelectrode for reducing CO2. The method aims at solving the technical problems that in the process of photocatalytic reduction of CO2 through an existing TiO2 nanotube array photoelectrode, the visible light utilization rate is low, and photogenerated charge separation is poor. The method comprises the first step of preparing of a MnOxmodified TiO2 nanotube array photoelectrode and the second step of preparing of a Pd and MnOx jointly-modified TiO2 nanotube array photoelectrode. According to the preparing method, the Pd and MnOx jointly-modified TiO2 nanotube array photoelectrode is applied to the process of photocatalytic reduction of CO2, the prepared photoelectrode is arranged in an organic glass reactor which comprises KHCO3 of 0.1 M, the length of the organic glass reactor is 4 cm, the width of the organic glass reactor is 3 cm, and quartz glass is arranged on one side of the organic glass reactor; and after lighting is conducted for 1h, a certain amount of liquid is extracted to measure reduced products in the organic glass reactor. The preparing method is used for preparing the photogenerated charge separation improved Pd and MnOx jointly-modified TiO2 nanotube array photoelectrode for reducing CO2.

Description

technical field [0001] The present invention relates to improved separation of photogenerated charges for the reduction of CO 2 The field of photoelectrode preparation methods. Background technique [0002] The rapid development of the global economy and the acceleration of industrialization and urbanization have brought serious environmental pollution and energy problems. The combustion of non-renewable energy such as coal and oil releases a large amount of CO 2 The gas has brought about a serious greenhouse effect, affecting the normal production and life of human beings. will CO 2 Switching to useful fuels does more than mitigate CO 2 The environmental problems caused by the release can also generate new energy, which is a win-win strategy. Among many technologies to deal with environmental and energy problems, semiconductor photocatalysis technology has entered people's sight because of its advantages of simple operation, no secondary pollution, low energy consumpti...

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): C25D11/26C23C18/12C25D3/50C25B3/04C25B11/06C25B3/25
CPCC23C18/1216C25D3/50C25D11/26C25B3/25C25B11/093
Inventor 冯玉杰吴晶刘佳
Owner HARBIN INST OF TECH