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A kind of preparation method of black phosphorene modified iron oxide composite photoelectrode

A technology of iron oxide light and black phosphorene, applied in the field of materials, can solve the problems that the hydrogen production performance of iron oxide photoelectrodes cannot meet the needs of practical applications, and achieve the effects of promoting separation and transmission, mild experimental conditions, and low energy consumption

Active Publication Date: 2022-03-22
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] One purpose of the present invention is to solve the problem that the photoelectrocatalytic water splitting hydrogen production performance of the existing iron oxide photoelectrode cannot meet the practical application requirements

Method used

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  • A kind of preparation method of black phosphorene modified iron oxide composite photoelectrode
  • A kind of preparation method of black phosphorene modified iron oxide composite photoelectrode
  • A kind of preparation method of black phosphorene modified iron oxide composite photoelectrode

Examples

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Effect test

Embodiment 1

[0031] Example 1: 30 μL of black phosphorene solution was added dropwise on the titanium-treated sample and heated in a vacuum oven at 200° C. for 10 min to obtain a black phosphorene-modified iron oxide composite photoelectrode.

Embodiment 2

[0032] Example 2: 100 μL of black phosphorene solution was added dropwise on the titanium-treated sample and heated in a vacuum oven at 100° C. for 30 minutes to obtain a black phosphorene-modified iron oxide composite photoelectrode.

Embodiment 3

[0033] Example 3: 50 μL of black phosphorene solution was added dropwise on the titanium-treated sample and heated in a vacuum oven at 150° C. for 20 minutes to obtain a black phosphorene-modified iron oxide-iron composite photoelectrode.

[0034] figure 1Flowchart for the fabrication of black phosphorene-supported iron oxide composite photoelectrodes. First, the FTO conductive glass with FeOOH film was put into TOPD solution for ultrasonication, and then it was transformed into titanium-treated iron oxide photoelectrode by high-temperature annealing. Finally, a black phosphorene-modified iron oxide composite photoelectrode (Ti-Fe 2 o 3 / BP).

[0035] figure 2 It is the SEM topography contrast figure and HRTEM figure among the embodiment 3. in figure 2 a, 2b Scanning electron microscopy (SEM) was used to study titanium-treated iron oxide (Ti-Fe 2 o 3 ) photoelectrode and titanium-treated iron oxide photoelectrode loaded with black phosphorene (Ti-Fe 2 o 3 / BP) morp...

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Abstract

The invention relates to the field of material technology, in particular to a method for preparing a black phosphorene-modified iron oxide composite photoelectrode. The present invention uses a surface modification method to load a small amount of black phosphorene on the titanium-treated iron oxide photoelectrode. On the one hand, the energy level structure matched by black phosphorene and iron oxide is very conducive to the separation and transmission of photogenerated carriers. On the other hand, the phosphooxy groups generated on the surface of black phosphorene can effectively bridge black phosphorene and iron oxide nanoparticles, and make the combination of the two closer, thereby further promoting the separation and transport of photogenerated carriers.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a method for preparing a black phosphorene-modified iron oxide composite photoelectrode. Background technique [0002] Since Fujishima and Honda, professors of the University of Tokyo in Japan, discovered the phenomenon of hydrogen production by photocatalytic water splitting on single crystal titanium dioxide electrodes in 1972, the technology of solar photocatalytic water splitting hydrogen production using semiconductor nanomaterials as catalysts has become the most concerned research direction in the world. one. Solar photocatalytic decomposition of water to produce hydrogen is a special heterogeneous catalysis, which refers to the process of decomposing water by semiconductor photoelectrodes (catalysts) under the combined action of an external electric field and sunlight. Because of its high hydrogen production efficiency compared with photocatalytic systems, moderate cos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/091C25B11/054C25B1/55C25B1/04
CPCC25B11/04C25B1/04Y02E60/36
Inventor 邓久军邵珊许晖
Owner JIANGSU UNIV
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