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RGO/Fe3O4@Ru-TiO2 magnetic photocatalyst as well as preparation method and application thereof

A photocatalyst and magnetic technology, applied in the field of rGO/Fe3O4@Ru-TiO2 magnetic photocatalyst and its preparation, can solve the problems of narrow light absorption range, separation and recovery difficulties, etc., achieve lower band gap energy, and simple and easy preparation method Line, increase the effect of adsorption

Pending Publication Date: 2021-11-02
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] TiO 2 Nanomaterials have been widely used as an efficient photocatalyst, but there are also certain shortcomings and deficiencies: (1) The wide band gap energy (Eg) can only be used for the ultraviolet part of sunlight (about 50% of sunlight) 5%) produces absorption, and the light absorption range is narrow; (2) The electron-hole pairs generated by light irradiation excitation can recombine within a few nanoseconds; (3) The difficulty of separation and recovery is also the main reason for its limited application

Method used

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  • RGO/Fe3O4@Ru-TiO2 magnetic photocatalyst as well as preparation method and application thereof
  • RGO/Fe3O4@Ru-TiO2 magnetic photocatalyst as well as preparation method and application thereof
  • RGO/Fe3O4@Ru-TiO2 magnetic photocatalyst as well as preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0030] A rGO / Fe 3 o 4 @Ru-TiO 2 Magnetic photocatalyst with Fe 3 o 4 As the magnetic core, tetrabutyl titanate and RuCl 3 ·3H 2 O as a precursor and sodium dodecylsulfonate as an auxiliary agent, Ru-doped TiO was synthesized by a simple liquid-phase deposition method at room temperature 2 Magnetic Fe 3 o 4 @Ru-TiO 2 Composite nanomaterials; then weigh 100mg of magnetic Fe 3 o 4 @Ru-TiO 2Nanomaterials were loaded with 0mg, 1mg, 5mg, 10mg, 15mg, and 20mg of few-layer flake graphene oxide respectively to prepare Fe 3 o 4 @Ru-TiO 2 Composite nanomaterials supported rGO / Fe on reduced graphene 3 o 4 @Ru-TiO 2 Magnetic photocatalyst.

[0031] A rGO / Fe 3 o 4 @Ru-TiO 2 The preparation method of magnetic photocatalyst, concrete steps are as follows:

[0032] 1. Fe 3 o 4 @Ru-TiO 2 Synthesis of Magnetic Photocatalyst:

[0033] (1) Measure 40mL of absolute ethanol and 0.8mL of tetrabutyl titanate (TBOT), then add 0.734mL of RuCl to the solution 3 ·3H 2 O ethanol ...

Embodiment 2

[0042] Embodiment 2 photocatalyst catalytic performance evaluation

[0043] The light source is a 300W xenon lamp (Beijing Profilai Company, PLS-SXE300+ / UV), equipped with a visible light (λ > 420nm) filter, measure 150mL of 5 × 10 -5 M MB dye solution, take by weighing 50 mg of photocatalyst prepared in Example 1 and ultrasonically disperse in the dye solution, and leave the dispersion in the dark for 30 min to reach an adsorption-desorption equilibrium between the catalyst and the dye, then carry out mechanical stirring, And turn on the light to carry out photocatalytic degradation of the dye solution, take 2mL of the dye solution every 20 minutes to detect the UV-vis spectrum, and degrade for 80 minutes.

[0044] Depend on image 3 It can be seen that the catalyst samples GFRT0-GFRT5 can all have good photocatalytic degradation activity on MB, and when the graphene loading increases, the photocatalytic degradation performance of the catalyst on the dye MB is significantly ...

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Abstract

The invention discloses an rGO / Fe3O4@Ru-TiO2 magnetic photocatalyst as well as a preparation method and application thereof. The preparation method comprises the steps of taking Fe3O4 as a magnetic core, tetrabutyl titanate and RuCl3. 3H2O as precursors, sodium dodecyl sulfate and ammonia water as auxiliaries, acetone as a solvent, and synthesizing the Fe3O4@ Ru-TiO2 magnetic composite material with Ru being doped with TiO2 through a liquid phase deposition method; and carrying out loading compounding on the synthesized magnetic composite material and few-layer flaky graphene oxide in a mixed solvent of ethanol / ethylene glycol through a solvothermal method so as to finally prepare the rGO / Fe3O4@Ru-TiO2 magnetic photocatalyst. The preparation method is simple and easy to implement, the preparation conditions are easy to control, and the prepared rGO / Fe3O4@Ru-TiO2 magnetic photocatalyst has good visible light photocatalytic degradation activity on methylene blue and has certain application prospects.

Description

technical field [0001] The invention belongs to the technical field of chemical catalysis, and in particular relates to a rGO / Fe 3 o 4 @Ru-TiO 2 Magnetic photocatalyst and its preparation method and application. Background technique [0002] In recent decades, with the development of global industrialization and highly modernized agriculture, a large amount of greenhouse gases and toxic, harmful, and refractory organic pollutants have been discharged into the natural environment, resulting in varying degrees of water pollution and shortages around the world. These are serious threats to the living environment and health of human beings, and organic dyes are the main substances. Since these organic pollutants are difficult to degrade naturally in the environment, it is necessary for people to develop effective methods and technologies to purify them. polluted water bodies. Methylene blue (MB, C 16 h 18 ClN 3 S) is a commonly used dye, which is widely used in dyeing and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89C02F1/30C02F101/36C02F101/38
CPCB01J23/8906B01J23/002C02F1/30B01J2523/00C02F2305/10C02F2101/308C02F2101/36C02F2101/38C02F2101/40B01J35/33B01J35/23B01J35/39B01J2523/47B01J2523/821B01J2523/842
Inventor 张奇马少莉于凉云李立冬许琦
Owner YANCHENG INST OF TECH
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