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Carbon-doped titanium dioxide single-crystalline nanorod material and preparation method thereof

A titanium dioxide, single crystal nanotechnology, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve problems such as unknown photocatalytic activity and wide band gaps

Inactive Publication Date: 2017-07-07
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the application process, it was found that titanium dioxide has some shortcomings: (1) the energy band gap is wide (3.2eV)
However, the photocatalytic activity of rutile titania single crystals is currently being explored, and the photocatalytic activity of carbon-doped rutile titania single crystals is still unknown.

Method used

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  • Carbon-doped titanium dioxide single-crystalline nanorod material and preparation method thereof
  • Carbon-doped titanium dioxide single-crystalline nanorod material and preparation method thereof
  • Carbon-doped titanium dioxide single-crystalline nanorod material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Add 10g of styrene, 90g of deionized water, and 1.5g of potassium persulfate into a 100ml four-neck flask, stir evenly, and replace oxygen with nitrogen for 20 minutes. At a rotation speed of 400 rpm, the temperature was raised to 70° C. for 4 hours. Start to continuously drop 2-(methacryloyloxy)ethyltrimethylammonium chloride with an autosampler, filter the obtained product and wash it with water and ethanol to obtain a polymer template. Disperse 4g of the obtained polymer template and 40ml of absolute ethanol in a reaction bottle, slowly add 0.4g of tetrabutyl titanate in an ice-water bath, and then add 2g of ammonia water dropwise after 24 hours, a sol-gel reaction occurs to form a polymer Composite particles with core titania shell structure. Filter the obtained composite particles with core-shell structure, wash with water, take 0.24g after drying and place in a Teflon-lined stainless steel hydrothermal kettle, add 18g of hydrochloric acid aqueous solution with a ...

Embodiment 2

[0034]Add 5 g of styrene, 95 g of deionized water, and 1 g of azobisisobutylamidine hydrochloride into a 100 ml four-necked flask, stir evenly, and replace oxygen with nitrogen for 20 minutes. At a rotation speed of 200 rpm, the temperature was raised to 70° C. for 4 hours. Start to continuously drop 2-(methacryloyloxy)ethyltrimethylammonium chloride with an autosampler, filter the obtained product and wash it with water and ethanol to obtain a polymer template. Disperse 6g of the obtained polymer template and 60ml of absolute ethanol in a reaction bottle, slowly add 6g of tetrabutyl titanate in an ice-water bath, and then add 9g of ammonia water dropwise after 24 hours, a sol-gel reaction occurs to form a polymer core Composite particles with titanium dioxide shell structure. Filter the obtained composite particles with core-shell structure, wash with water, take 0.24g after drying and put it in a Teflon-lined stainless steel hydrothermal kettle, add 24g of hydrochloric acid...

Embodiment 3

[0036] Add 30g of styrene, 70g of deionized water, and 3g of ammonium persulfate + azodicyanovaleric acid in a ratio of 1:1 into a 100ml four-necked bottle, stir evenly, and replace oxygen with nitrogen for 20 minutes. At a rotation speed of 200 rpm, the temperature was raised to 70° C. for 4 hours. Start to continuously drop 2-(methacryloyloxy)ethyltrimethylammonium chloride with an autosampler, filter the obtained product and wash it with water and ethanol to obtain a polymer template. Disperse 5g of the obtained polymer template and 50ml of absolute ethanol in a reaction bottle, slowly add 0.5g of tetrabutyl titanate in an ice-water bath, and then add 2.5g of ammonia water dropwise after 24 hours, a sol-gel reaction occurs to form a polymer Composite particles with titanium dioxide shell structure. Filter the obtained composite particle with core-shell structure, wash with water, take 1 g after drying and place it in a Teflon-lined stainless steel hydrothermal kettle, add ...

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Abstract

The invention provides a carbon-doped titanium dioxide single-crystalline nanorod material and a preparation method thereof. The preparation method comprises the following steps: S1, preparing a polymeric template; S2, preparing composite particles of a structure with a polymeric core and a titanium dioxide shell through the polymeric template; and S3, preparing the carbon-doped titanium dioxide single-crystalline nanorod material through the composite particles of the structure with the polymeric core and the titanium dioxide shell. According to the carbon-doped titanium dioxide single-crystalline nanorod material prepared by an in-situ synthesis method designed in the invention, carbon element is successfully doped in an oxygen lattice. As a result of a severe synergistic effect, the material which is taken as a photocatalyst for degrading MB shows a remarkable photocatalytic effect beyond that of commercial P25 when visible light irradiates MB, RhB and PNP. Therefore, the work provides a new angle of view for combining a dopant into a titanium dioxide single crystalline to form the titanium dioxide single crystalline with high photocatalytic property, so that the application of the material in the environmental field is greatly expanded.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic materials and preparation, and relates to a hybrid nanomaterial and a preparation method thereof, in particular to a carbon-doped titanium dioxide single crystal nanorod material and a preparation method thereof. Background technique [0002] Seeking sustainable and clean energy and convenient and quick methods to eliminate environmental pollution are the hotspots of scientists all over the world. Photocatalytic technology is an effective way to solve this major issue. In 1972, Japanese scholars Fujishima and Honda published an article in the journal Nature on the decomposition of water into hydrogen and oxygen by semiconductor titanium dioxide single crystal electrodes under the action of ultraviolet light, which opened up a new era for human beings to convert and utilize solar energy. [0003] Titanium dioxide is insoluble in water, has strong corrosion resistance, is cheap and easy to h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/22
CPCB01J27/22B01J35/39
Inventor 盛维琛邵剑曹顺生张萱萱
Owner JIANGSU UNIV