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A kind of ferric oxide photocatalyst heat-treated under nitrogen atmosphere, preparation method and application thereof

A technology of ferric oxide and photocatalyst, which is used in catalyst activation/preparation, physical/chemical process catalyst, iron oxide/iron hydroxide, etc., can solve the problem of broadening the visible light response range of photocatalyst and unable to enhance photocatalyst well. Light absorption capacity and other issues, to achieve the effect of expanding the visible light response range, improving the light absorption capacity, and strengthening the light absorption capacity

Active Publication Date: 2022-07-01
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these technologies have some shortcomings, such as not being able to broaden the visible light response range of the photocatalyst, and not being able to enhance the light absorption ability of the photocatalyst.

Method used

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  • A kind of ferric oxide photocatalyst heat-treated under nitrogen atmosphere, preparation method and application thereof
  • A kind of ferric oxide photocatalyst heat-treated under nitrogen atmosphere, preparation method and application thereof
  • A kind of ferric oxide photocatalyst heat-treated under nitrogen atmosphere, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1. Take 0.05 mmol of ferric (III) chloride hexahydrate and place it in 20 ml of deionized water to ultrasonicate until completely dissolved to obtain a ferric (III) chloride precursor solution.

[0037] 2. The clean fluorine-doped tin oxide conductive substrate is placed obliquely on the inner wall of the clean high-temperature reactor liner, and the conductive surface of the fluorine-doped tin oxide conductive substrate faces outward. Iron trichloride (III) precursor solution is added to the inner tank on which the fluorine-doped tin oxide conductive glass is placed, and the precursor solution does not pass over the top of the glass. The high-temperature reaction kettle containing the fluorine-doped tin oxide conductive substrate and iron(III) chloride precursor solution was transferred to a blast drying oven, and hydrothermally reacted at 100 °C for 1 h, cooled to room temperature, and taken out, and deionized water was used to fluorine-doped The tin oxide conductive ...

Embodiment 2

[0043] 1. Take 0.1 mmol of ferric (III) chloride hexahydrate and place it in 20 ml of deionized water to ultrasonicate until completely dissolved to obtain a ferric (III) chloride precursor solution.

[0044] 2. The clean indium-doped tin oxide conductive substrate is placed obliquely on the inner wall of the clean high-temperature reactor liner, and the conductive surface of the fluorine-doped tin oxide conductive substrate faces outward. Iron trichloride (III) precursor solution is added to the inner tank on which the fluorine-doped tin oxide conductive glass is placed, and the precursor solution does not pass over the top of the glass. The high-temperature reactor containing fluorine-doped tin oxide conductive substrate and iron(III) chloride precursor solution was transferred to a blast drying oven, and hydrothermally reacted at 160 °C for 1 h, cooled to room temperature, and taken out, and deionized water was used to fluorine-doped The tin oxide conductive substrate was r...

Embodiment 3

[0047] 1. Take 0.2 mmol of ferric (III) chloride hexahydrate and place it in 20 ml of deionized water to ultrasonicate until completely dissolved to obtain a ferric (III) chloride precursor solution.

[0048] 2. The clean fluorine-doped zinc oxide conductive substrate is placed obliquely on the inner wall of the clean high-temperature reactor liner, and the conductive surface of the fluorine-doped tin oxide conductive substrate faces outward. Iron trichloride (III) precursor solution is added to the inner tank on which the fluorine-doped tin oxide conductive glass is placed, and the precursor solution does not pass over the top of the glass. The high-temperature reaction kettle containing the fluorine-doped tin oxide conductive substrate and iron(III) chloride precursor solution was transferred to a blast drying oven, and hydrothermally reacted at 80 °C for 4 h, cooled to room temperature, and taken out, and deionized water was used to fluorine-doped water. The tin oxide condu...

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Abstract

The invention belongs to the technical field of photocatalytic oxidation, and discloses a ferric oxide photocatalyst heat-treated under nitrogen atmosphere and its preparation and application. The ferric oxide photocatalyst heat-treated under the nitrogen atmosphere is to place the ferric trichloride (III) hexahydrate in deionized water for ultrasonic to obtain the ferric trichloride (III) precursor liquid; ) The precursor solution is added to a high-temperature reaction kettle with a conductive substrate placed at 80-160 ° C for hydrothermal reaction; after the hydrothermal reaction is completed, rinse with deionized water, and dry under a stream of drying gas; sintered at 500-700 ° C under nitrogen atmosphere. have to. The ferric oxide photocatalyst heat-treated under nitrogen atmosphere forms nitrogen doping on its surface, which can form a new intermediate energy level on the basis of the original energy level of ferric oxide, so as to achieve the high performance of ferric oxide photocatalyst. The purpose of fine-tuning the forbidden band width Eg is to narrow the Eg, so as to obtain a higher light absorption capacity of visible light.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic oxidation, and more particularly relates to a ferric oxide photocatalyst heat-treated under nitrogen atmosphere, and a preparation method and application thereof. Background technique [0002] With the rapid development of society, energy demand and environmental pollution problems are social problems that we humans cannot escape today. Since Fujishima and Honda first used the semiconductor material titanium dioxide to split water to produce hydrogen experiment under ultraviolet light irradiation, they showed us a new and ideal technology to solve energy problems and environmental problems - photocatalytic oxidation technology. Photocatalytic oxidation technology uses visible light to excite photocatalytic materials (inorganic semiconductors, organic-inorganic semiconductor materials, polymer materials, etc.) to obtain photogenerated carriers, which are transferred to the semiconductor surf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/745B01J37/10B01J37/08B01J37/34C01G49/06C01B3/04C02F1/30C02F101/30C02F101/38
CPCB01J23/745B01J35/004B01J37/10B01J37/08B01J37/343C01G49/06C01B3/042C02F1/30C02F2101/308C02F2101/38C02F2101/40C01P2002/84C02F2305/10Y02E60/36
Inventor 陈其赞罗东向张梦龙李洁
Owner GUANGDONG UNIV OF TECH
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