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Three-dimensional flower-like In2S3/In2O3 composite microsphere photocatalytic material and preparation method thereof

A three-dimensional flower-like, catalytic material technology, applied in the field of environmental pollution control, achieves good application value and prospects, uniform distribution, and inhibition of recombination.

Inactive Publication Date: 2016-06-15
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Currently, In 2 S 3 Nanosheets Decorated Three-dimensional Flower-like In 2 o 3 There is no report, and the three-dimensional flower-like In 2 S 3 / In 2 o 3 Composite microsphere photocatalytic material, and its application in visible light catalytic degradation of o-dichlorobenzene (a model compound of dioxins, its structure is similar to 2,4,7,8-tetrachlorodibenzodioxin ), there are no reports at home and abroad

Method used

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  • Three-dimensional flower-like In2S3/In2O3 composite microsphere photocatalytic material and preparation method thereof
  • Three-dimensional flower-like In2S3/In2O3 composite microsphere photocatalytic material and preparation method thereof
  • Three-dimensional flower-like In2S3/In2O3 composite microsphere photocatalytic material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Preparation of three-dimensional flower-like In by hydrothermal method 2 o 3

[0033] 0.7mmolInCl 3 ·xH 2 O and 2.1 mmol of sodium lauryl sulfate were dissolved in 42 mL of deionized water, then stirred until a transparent solution was obtained; 3.5 mmol of urea was added to the above solution, and continued to stir until dissolved; the above mixed solution was transferred to a polytetrafluoroethylene reactor 120°C for hydrothermal reaction for 16 h; after cooling to room temperature, wash and purify with ethanol and deionized water multiple times to remove unreacted reactants, and after centrifugation, collect the white precipitate (In(OH) 3 ), dried, and the resulting In(OH) 3 The powder was calcined at 550 °C for 2 h to obtain a three-dimensional flower-like In 2 o 3 .

Embodiment 2

[0035] According to the preparation method in Example 1, the hydrothermal reaction temperature is 160 ° C, the reaction is 8 hours, and other parameters remain unchanged, and the three-dimensional flower-shaped In 2 o 3 .

Embodiment 3

[0037] According to the preparation method in Example 1, the hydrothermal reaction temperature is 140°C, the reaction is 12h, and other parameters remain unchanged, and the three-dimensional flower-shaped In 2 o 3 .

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Abstract

The invention discloses a three-dimensional flower-like In2S3 / In2O3 composite microsphere photocatalytic material and a preparation method thereof, belonging to the field of pollution control and technology. The preparation method comprises the following steps of taking thioacetamide as a sulfur source, substituting lattice oxygen in the In2O3 with sulfur ions through an ion exchange reaction, performing in situ generation of an In2S3 nanosheet on the surface of flower-like In2O3, and forming a heterojunction structure, wherein the morphology of the three-dimensional flower-like In2O3 is uniform, and the particle size of the three-dimensional flower-like In2O3 is 3.0 to 6.5 microns; coating the surface of / In2O3 microflowers with the In2S3 nanosheet. The used raw materials are low in price and easily-obtained, reaction conditions are easily controlled and the requirement on equipment is low, so the preparation method disclosed by the invention is an environmental-friendly preparation method. By using In2S3 / In2O3 composite microspheres, the utilization rate of the In2O3 to visible light can be improved, and the compounding of photon-generated carriers is inhibited; the In2S3 / In2O3 composite microspheres have good application value and prospect in the field of volatile organic contaminants.

Description

technical field [0001] The invention belongs to the field of environmental pollution control and relates to a new three-dimensional flower-shaped In 2 S 3 / In 2 o 3 The preparation method of composite microsphere photocatalytic material, specifically relates to a three-dimensional flower-like In 2 S 3 / In 2 o 3 Composite microsphere photocatalytic material. Background technique [0002] In recent years, the problem of municipal waste incineration has attracted widespread attention. In the process of municipal waste incineration, chlorine-containing volatile organic compounds (Cl–VOCs) will be produced. Among them, polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) belong to dioxin-like compounds and are listed as persistent organic pollutants (POPs) with high toxicity and environmental Persistence and carcinogenicity, so many countries have established strict emission standards for PCDD / Fs. The traditional method for the treatment of...

Claims

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Application Information

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IPC IPC(8): B01J27/04B01J35/00B01J35/08B01D53/70B01D53/86
CPCB01D53/8662B01J27/04B01D2258/0291B01J35/51B01J35/39B01J35/40
Inventor 李新勇张菲肇启东
Owner DALIAN UNIV OF TECH
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