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All-solid-state (ZnO-Pt)/GR/C3N4 composite nanofiber photocatalytic material, and preparation method and application thereof

A technology of composite nanofibers and photocatalytic materials, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc. Barriers and other issues

Active Publication Date: 2020-05-19
JISHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there are two problems in the Z-type all-solid-state structure of the broadband semiconductor with visible light activity. First, the photogenerated electrons and holes generated between the binary semiconductor and the semiconductor are easy to transfer to the high conduction band and the low valence band respectively ( figure 2 ), similar to the traditional semiconductor sensitization modification, a higher contact barrier will appear at the interface, so that the photogenerated charge is transferred in a non-Z-type; and the Z-type structure prepared by chemical methods is difficult to eliminate the direct contact between the semiconductor and the semiconductor.
Secondly, the semiconductor in the core-shell envelope is not exposed to light and cannot generate photogenerated electron-hole pairs, so it is impossible to realize Z-type transfer.
These have weakened the use of energy band regulation broadband semiconductor Z-type all-solid-state structure to improve visible light catalytic activity, affecting and restricting its practical application

Method used

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  • All-solid-state (ZnO-Pt)/GR/C3N4 composite nanofiber photocatalytic material, and preparation method and application thereof
  • All-solid-state (ZnO-Pt)/GR/C3N4 composite nanofiber photocatalytic material, and preparation method and application thereof
  • All-solid-state (ZnO-Pt)/GR/C3N4 composite nanofiber photocatalytic material, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] A preparation of all solid state (ZnO-Pt) / GR / C 3 N 4 The method for composite nanofiber photocatalytic material, the method comprises the following steps:

[0088] A) Preparation of spinning precursor solution:

[0089] Take by weighing 1.6000g oligomer PCA (polycarbonate) and join in 20mL THF (tetrahydrofuran), magnetic stirring makes it fully dissolve; Then weigh 0.2200g zinc acetate and 0.0115g trimethyl (methyl cyclopentadienyl ) The organic precursor of platinum is dissolved in the PCA solution, and the PCA-Zn / Pt precursor solution is obtained after fully stirring and mixing.

[0090] Weigh 2.1000g of PVP and add it into 15mL of absolute ethanol, stir it with magnetic force to fully dissolve it to obtain the PVP precursor solution.

[0091] Take by weighing 1.6000g oligomer PCA (polycarbonate) and join in 20mL THF (tetrahydrofuran), magnetic stirring makes it fully dissolve; Then weigh 2.7000g CM (cyanuric acid and melamine are 1:1 by mass ratio Mixture) was di...

Embodiment 2

[0097] A preparation of all solid state (ZnO-Pt) / GR / C 3 N 4 The method for composite nanofiber photocatalytic material, the method comprises the following steps:

[0098] A) Preparation of spinning precursor solution:

[0099] Take by weighing 1.6000g oligomer PCA (polycarbonate) and join in 20mL THF (tetrahydrofuran), magnetic stirring makes it fully dissolve; Then weigh 0.2200g zinc acetate and 0.0190g trimethyl (methyl cyclopentadienyl ) The organic precursor of platinum is dissolved in the PCA solution, and the PCA-Zn / Pt precursor solution is obtained after fully stirring and mixing.

[0100] Weigh 1.9000g of PVP and add it into 15mL of absolute ethanol, stir it with magnetic force to make it fully dissolved to obtain the PVP precursor solution.

[0101] Take by weighing 1.6000g oligomer PCA (polycarbonate) and join in 20mL THF (tetrahydrofuran), magnetic stirring makes it fully dissolve; Then weigh 2.7000g CM (cyanuric acid and melamine are 1:1 by mass ratio Mixture) ...

Embodiment 3

[0107] A preparation of all solid state (ZnO-Pt) / GR / C 3 N 4 The method for composite nanofiber photocatalytic material, the method comprises the following steps:

[0108] A) Preparation of spinning precursor solution:

[0109] Weigh 1.6000g oligomer PCA (polycarbonate) and add it to 20mL THF (tetrahydrofuran), stir it magnetically to make it fully dissolved; then weigh 0.2200g zinc acetate and 0.0141g organic precursor of platinum acetylacetonate and dissolve it in the PCA solution , fully stirred and mixed to obtain a PCA-Zn / Pt precursor solution.

[0110] Weigh 2.1000g of PVP and add it into 15mL of absolute ethanol, stir it with magnetic force to fully dissolve it to obtain the PVP precursor solution.

[0111] Take by weighing 1.6000g oligomer PCA (polycarbonate) and join in 20mL THF (tetrahydrofuran), magnetic stirring makes it fully dissolve; Then weigh 2.7000g CM (cyanuric acid and melamine are 1:1 by mass ratio Mixture) was dissolved in the PCA solution, fully stirr...

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Abstract

The invention discloses an ordered layered Z-type all-solid-state (SC-dopant) / GR / C3N4 composite nanofiber photocatalytic material having a conductive layer with good electricity transmission characteristics, adsorbability and stability, an ohmic contact interface with a non-core-shell coating structure, and a broadband semiconductor (SC) with the characteristics of energy band regulation and control characteristics, no photocorrosion reaction and the like. The catalytic material is excellent in photocatalytic hydrolysis hydrogen production performance, low in catalytic performance loss rate after being recycled multiple times, and wide in application prospect.

Description

technical field [0001] The invention relates to photocatalytic materials for hydrogen production by hydrolysis, in particular to an all-solid-state (ZnO-Pt) / GR / C 3 N 4 The composite nanofiber photocatalytic material and its preparation method and application belong to the technical field of photocatalytic hydrolysis hydrogen production. Background technique [0002] The energy crisis and the use of renewable resources to prepare clean and non-polluting new energy are major issues that must be faced and urgently resolved for the sustainable development of human society. Hydrogen energy not only has high energy density, high combustion efficiency, clean and cheap, but also can be used sustainably by human society. It is the best energy to replace traditional fossil fuels. Photocatalytic engineering technology is an advanced technology that directly uses low-density solar energy to convert it into the energy required for chemical reactions. It is not only used to oxidize and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J35/06B82Y30/00B82Y40/00C01B3/04
CPCB01J27/24B01J37/0018B82Y30/00B82Y40/00C01B3/042B01J35/39B01J35/58Y02E60/36
Inventor 李佑稷韩志英
Owner JISHOU UNIVERSITY