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Preparation method of photocatalytic material by in-situ compositing zinc ferrite nano-rods with lamellar TiO2

A photocatalytic material and an in-situ composite technology are applied in the field of photocatalytic material preparation to achieve the effects of simple and easy method and improved ability to degrade dyes

Active Publication Date: 2018-10-23
NANCHANG HANGKONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention provides a nano-rod zinc ferrite in-situ composite layer titanium dioxide photocatalytic material (abbreviated as ZnFe 2 o 4 @TiO 2 Preparation methods of composite materials) to solve environmental and energy problems

Method used

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  • Preparation method of photocatalytic material by in-situ compositing zinc ferrite nano-rods with lamellar TiO2
  • Preparation method of photocatalytic material by in-situ compositing zinc ferrite nano-rods with lamellar TiO2
  • Preparation method of photocatalytic material by in-situ compositing zinc ferrite nano-rods with lamellar TiO2

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Step 1: Preparation of Nanorod Zinc Ferrite

[0035] (1) take zinc chloride and ferrous chloride tetrahydrate and add in the 80% ethylene glycol aqueous solution that fills a certain proportion, then magnetic stirring mixes;

[0036] (2) Transfer to a Teflon reaction kettle, react in a hydrothermal reaction kettle at 175°C-185°C for 24 hours, and obtain a light yellow solid, which is then washed by centrifugation and dried overnight in a vacuum environment at 80°C to obtain zinc ferrite Precursor complex;

[0037] (3) transfer the zinc ferrite precursor compound into a crucible, put it into a muffle furnace for calcination at a high temperature of 500° C. for three hours, and obtain nanorod zinc ferrite crystals;

[0038] Step 2: Preparation of nanorod zinc ferrite in situ composite sheet titanium dioxide photocatalytic material

[0039](1) 0.5g cetyltrimethylammonium bromide is taken and dissolved in ethanol and amyl alcohol mixed solution with a volume ratio of 4:1,...

Embodiment 2

[0045] Step 1: same as Step 1 in Example 1;

[0046] Step 2: Preparation of nanorod zinc ferrite in situ composite sheet titanium dioxide photocatalytic material

[0047] (1) 0.5g cetyltrimethylammonium bromide is taken and dissolved in ethanol and amyl alcohol mixed solution with a volume ratio of 4:1, stirred for 20min to make it completely dissolved to obtain a mixed alcohol solution of ethanol and amyl alcohol;

[0048] (2) Weighing 1.2g of the rod-shaped zinc ferrite nanomaterial prepared in step 1 and putting it into the alcohol solution mixed in (1), stirring for 30min to obtain a uniformly mixed mixture;

[0049] (3) Slowly add 5ml of tetrabutyl titanate liquid, 3ml of hydrofluoric acid and 8ml of deionized water into the homogeneously mixed mixture in (2), respectively, and continue magnetic stirring for 30min. After the stirring is completed, transfer it to the reactor and react in an oven at 180°C for 12 hours;

[0050] (4) After the reaction is completed and cool...

Embodiment 3

[0053] Step 1: same as Step 1 in Example 1;

[0054] Step 2: Preparation of nanorod zinc ferrite in situ composite sheet titanium dioxide photocatalytic material

[0055] (1) 0.5g cetyltrimethylammonium bromide is taken and dissolved in ethanol and amyl alcohol mixed solution with a volume ratio of 4:1, stirred for 20min to make it completely dissolved to obtain a mixed alcohol solution of ethanol and amyl alcohol;

[0056] (2) Weighing 1.8g of the rod-shaped zinc ferrite nanomaterial prepared in step 1 and putting it into the alcohol solution mixed in (1), stirring for 30min to obtain a uniformly mixed mixture;

[0057] (3) Slowly add 5ml of tetrabutyl titanate liquid, 3ml of hydrofluoric acid and 8ml of deionized water to the homogeneously mixed mixture in (2), respectively, and continue magnetic stirring for 30min. After the stirring is completed, transfer it to the reaction kettle React in an oven at 180°C for 12 hours;

[0058] (4) After the reaction is completed and co...

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Abstract

A preparation method of a photocatalytic material by in-situ compositing zinc ferrite nano-rods with lamellar TiO2 includes the steps of performing solvothermal synthesis to main raw materials including zinc chloride, ferrous chloride tetrahydrate, ammonium oxalate monohydrate, oxalic acid dihydrate, tetrabutyl titanate, n-pentyl alcohol, hydrofluoric acid and ethylene glycol, thereby producing the photocatalytic material by in-situ compositing the rodlike zinc ferrite with the lamellar TiO2. The method is simple in process and is easy to control in reaction conditions. By means of visible light with [lambda] being 500 nm being a light source, the material is subjected to photocalaytic performance test, wherein the material is proved to have excellent photocalaytic performance under visible light by degrading organic toxic pollutants, such as bisphenol A, rhodamine B, humic acid and the like; the material has excellent capability of photocatalytically degrading the organic pollutants,and has excellent application prospect in the field of environmental protection and water pollution control and has extensive development potential in new energy development and utilization by solar energy.

Description

technical field [0001] The invention belongs to the field of photocatalytic material preparation, and in particular relates to a preparation method of nano-rod zinc ferrite in-situ composite sheet-layer titanium dioxide photocatalytic material. Background technique [0002] Water is an indispensable substance for life and the source of all things. However, since the 21st century, due to the continuous acceleration of industrialization and the large increase in population, while enjoying modern civilization, human beings have also suffered from environmental pollution, especially water pollution. People have been looking for ways to deal with water pollution Method. In recent years, the problem of using renewable energy to solve environmental pollution has become the research focus of the scientific community. It is against this background that using solar energy, a renewable energy source, to solve the problem of environmental pollution has become a hot spot for researcher...

Claims

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Application Information

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IPC IPC(8): B01J23/80B01J35/02C02F1/32C02F101/38
CPCC02F1/32B01J23/80C02F2101/40C02F2101/38C02F2305/10B01J35/00B01J35/30B01J35/39
Inventor 谢宇曾德栋凌云
Owner NANCHANG HANGKONG UNIVERSITY
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