Preparation method of indium zinc sulfide and titanium dioxide heterojunction nano material

A titanium dioxide and nanomaterial technology, applied in electrodes, electrolysis process, electrolysis components, etc., can solve the problems of instability, low utilization rate of sunlight and photon quantum efficiency, high activity, and achieve large specific surface area, which is conducive to efficient collection and separation , the effect of high photocatalytic performance

Inactive Publication Date: 2018-03-16
HUBEI ENG UNIV
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  • Application Information

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Problems solved by technology

However, most photocatalysts either have low solar light utilization efficiency and low photon quantum ...

Method used

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  • Preparation method of indium zinc sulfide and titanium dioxide heterojunction nano material
  • Preparation method of indium zinc sulfide and titanium dioxide heterojunction nano material
  • Preparation method of indium zinc sulfide and titanium dioxide heterojunction nano material

Examples

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Embodiment 1

[0032] A preparation method of a heterojunction nanomaterial 1 of sulfur indium zinc and titanium dioxide, comprising the following steps:

[0033]1) Weigh 5mL tetrabutyl titanate, 10mL absolute ethanol and 3mL acetic acid, then place tetrabutyl titanate, absolute ethanol and acetic acid in a glass container, seal the container mouth, and continuously stir the solution with a magnetic stirrer 2h, to obtain a uniform mixed solution;

[0034] 2) Add 1 mL of vinylpyrrolidone to the mixed solution, seal and stir to obtain an electrospinning precursor;

[0035] 3) Place the electrospinning precursor in the syringe of the electrospinning machine, and carry out electrospinning under the conditions of a voltage of 15kV and a feeding rate of 1.5mL / h, and transfer the electrospinning precursor from the syringe of the electrospinning machine Feed it into the collection device (the collection device is a stainless steel plate covered with aluminum foil) 20cm away from the syringe of th...

Embodiment 2

[0041] Keep steps 1-3 in Example 1 unchanged, and do not carry out steps 4-5 in Example 1, directly the TiO obtained by electrospinning 2 Nanorods were characterized and tested for photocatalysis. Get TiO 2 XRD of nanorods and figure 1 The standard spectrum of bPDF No.2-387 is consistent, and the SEM image of the micro-morphology is figure 2 As shown in a, the photocatalytic effect is Figure 4 TiO 2 The nanofibers are shown in polylines.

Embodiment 3

[0043] This embodiment prepares ZnIn 2 S 4 / TiO 2 The method of the heterojunction nanocomposite material 2 is basically the same as the steps of Example 1, except that:

[0044] TiO in step 5 2 The amount of nanorods is 1.8g, thus the ZnIn 2 S 4 / TiO 2 Heterojunction Nanocomposite 2, ZnIn 2 S 4 / TiO 2 ZnIn in heterojunction nanocomposites 2 2 S 4 with TiO 2 The molar ratio is 2:100.

[0045] Its ZnIn 2 S 4 / TiO 2 The SEM of the microstructure of the heterojunction nanocomposite 2 is shown in Figure 2b, and the photocatalytic effect is Figure 4 The polyline inside ZIS2 is shown.

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Abstract

The invention discloses a preparation method of an indium zinc sulfide and titanium dioxide heterojunction nano material. Through a hydrothermal method, ZnIn2S4 grows on TiO2 nano rods in situ, and thus the ZnIn2S4/TiO2 graded heterojunction nano composite material with a crystal lattice buffer layer structure is obtained. The preparation method comprises the steps that firstly, the TiO2 nano rodsare prepared through an electrostatic spinning method; then the obtained TiO2 nano rods are uniformly dispersed in a certain quantity of solution of zinc acetate, indium trichloride and thioacetamide; and the mixed solution is transferred into an autoclave at a certain temperature (120-180 DEG C) for a certain time (6-24 h), and thus the ZnIn2S4/TiO2 heterojunction nano composite material with acertain loading quantity of ZnIn2S4 nanosheets can be prepared in a controllable mode. The ZnIn2S4/TiO2 heterojunction nano composite material has the low-cost application prospects in the fields of photocatalytic degradation of organic matter through visible light and photolysis of water.

Description

technical field [0001] The present invention relates to the preparation of nano functional composite materials and the technical field of photocatalysis, in particular to a preparation method of a heterojunction nano material of sulfur indium zinc and titanium dioxide. Background technique [0002] Energy and environmental issues are major issues facing the sustainable development of mankind that need to be resolved urgently. Since Japanese scientist Fujishima (Nature, 1972,238,37-38) irradiated TiO with ultraviolet light 2 Since the electrode photo-splitting of water, photocatalytic technology has developed rapidly, and the use of sunlight for environmental purification and energy conversion has become a current research hotspot. However, most photocatalysts either have low solar light utilization efficiency and low photon quantum efficiency (such as TiO 2 ), or highly active but unstable (such as sulfides and some narrow bandgap oxides). Therefore, the development of ne...

Claims

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Application Information

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IPC IPC(8): C25B11/06C25B1/04
CPCC25B1/04C25B1/55C25B11/091Y02E60/36
Inventor 熊良斌聂长江肖华清李必慧曾庆栋
Owner HUBEI ENG UNIV
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