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Titanium dioxide nano-cluster@carbon sphere multistage composite structure material as well as preparation method and application thereof

A technology of titanium dioxide and composite structure, applied in the field of photocatalytic materials, can solve cumbersome and complicated problems, achieve the effects of simple and efficient method, reduced electron-hole recombination rate, and good application prospect

Active Publication Date: 2020-04-10
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] But currently TiO 2 The production and application of nano-particles still focus on pure nanoparticles, and their compounding with carbon materials such as activated carbon fibers, carbon nanotubes, and graphene often requires a multi-step process, which is cumbersome and complicated.

Method used

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  • Titanium dioxide nano-cluster@carbon sphere multistage composite structure material as well as preparation method and application thereof
  • Titanium dioxide nano-cluster@carbon sphere multistage composite structure material as well as preparation method and application thereof
  • Titanium dioxide nano-cluster@carbon sphere multistage composite structure material as well as preparation method and application thereof

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preparation example Construction

[0026] The invention provides a preparation method of a titanium dioxide nanocluster@carbon sphere multi-level composite structure material, comprising the following steps: mixing titanocene dichloride, liquid straight-chain carboxylic acid and liquid straight-chain alkane, performing solvothermal reaction, solidifying After liquid separation, titania nanoclusters@carbon spheres multilevel composite structure material was obtained.

[0027] In the present invention, unless otherwise specified, the raw materials used are commercially available products well known in the art.

[0028] In the present invention, the liquid linear carboxylic acid preferably includes one or more of formic acid, acetic acid, n-propionic acid, n-butyric acid, n-pentanoic acid, n-hexanoic acid, n-heptanoic acid and n-octanoic acid; Paraffins preferably include n-pentane, n-hexane, n-heptane, n-octane, n-nonane, n-decane, n-undecane, n-dodecane, n-tridecane, n-tetradecane, n-pentadecane One or more of ...

Embodiment 1

[0037] Use 0.15g titanocene dichloride as the titanium source, 5mL n-octanoic acid as the solvent, and 3mL n-heptane as the mixed solvent. After mixing, ultrasonically treat for 10min, stir for 20min, put it into the reactor for solvothermal reaction at 220°C for 24h, and centrifuge Separation, washing with ethanol and water, and drying in an oven at 60°C for 24 hours to finally obtain a titanium dioxide nanocluster@carbon sphere multilevel composite structure material.

[0038] The material prepared in embodiment 1 is carried out electron microscope observation, the result is as follows figure 1 In (a) ~ (d) shown. Among them, (a) is the transmission electron microscope (TEM) image of the sample, (b) is the partially enlarged TEM image; (c) is the scanning electron microscope transmission mode (STEM) image of the sample, and (d) is the partially enlarged STEM image of the sample .

[0039] Depend on figure 1 From (a) to (d), it can be seen that the sample has a clearly ide...

Embodiment 2

[0044] Use 0.35g titanocene dichloride as the titanium source, 25mL n-hexanoic acid as the solvent, and 12mL n-decane as the mixed solvent. After mixing, ultrasonically treat for 20min, stir for 50min, put it into the reactor for solvothermal reaction at 250°C for 12h, centrifuge Separation, washing with ethanol and water, and drying in an oven at 60°C for 24 hours to finally obtain a titanium dioxide nanocluster@carbon sphere multilevel composite structure material.

[0045] The material that embodiment 2 makes is carried out transmission electron microscope observation, the result is as follows image 3 shown. image 3 It is shown that the sample has a clearly identifiable hierarchical composite structure with an overall size of about 500 nm. In the figure, the darker discrete distribution along the outer layer is titanium dioxide nanoclusters, and the lighter middle part is carbon spheres.

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Abstract

The invention relates to the technical field of photocatalytic materials, in particular to a titanium dioxide nano-cluster@carbon sphere multistage composite structure material as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing titanocene dichloride, liquid straight-chain carboxylic acid and liquid straight-chain alkane, carrying out solvothermal reaction, and carrying out solid-liquid separation to obtain the titanium dioxide nano-cluster@carbon sphere multistage composite structure material. According to the invention, titanocene dichloride is used as a titanium source, liquid straight-chain carboxylic acid is used as a solvent, liquid straight-chain alkane is used as a mixed solvent, the titanium dioxide nano-cluster@carbon sphere multistage composite structure material can be obtained through a one-step solvothermal process, the method is simple and efficient, a titanium dioxide nano-structure with photocatalytic activity is completely exposed on the surface of the material, and a good organic pollutant removal effect is achieved.

Description

technical field [0001] The invention relates to the technical field of photocatalytic materials, in particular to a titanium dioxide nanocluster@carbon sphere multilevel composite structure material and its preparation method and application. Background technique [0002] With the increase of global population, the continuous development of social economy, the improvement of people's living standards, the problems of environmental pollution and energy demand brought about by global industrialization have become more and more serious. Environmental and energy-related issues such as sewage treatment, air purification, and clean energy production have gradually attracted widespread attention. As an advanced oxidation process, photocatalytic technology has great potential advantages in environmental pollution and new energy development, and has been regarded as an alternative method for eliminating many toxic organic compounds in sewage, air and soil. Among many photocatalytic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06B01J21/18B01J20/22C02F1/28C02F1/32B01J20/30C02F101/30
CPCB01J21/18B01J21/063C02F1/28C02F1/32B01J20/22B01J20/0211C02F2305/10C02F2101/30B01J35/39Y02W10/37
Inventor 王海青马明军周伟家王金刚刘宏
Owner UNIV OF JINAN
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