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Nanometer blue titanium dioxide colloid and preparation method and application thereof

A titanium dioxide and blue technology, applied in the direction of titanium dioxide, biochemical equipment and methods, titanium oxide/hydroxide, etc., can solve the problems of high detection cost, long time, complicated operation process, etc., and achieve color development response speed The effect of fast, good linear response

Active Publication Date: 2014-01-01
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this colorimetric detection method based on ferroferric oxide magnetic nanoparticle-mimicking enzyme can effectively detect hydrogen peroxide or glucose, it also has shortcomings. The reagent needs to be reacted for 10 minutes under acidic conditions with a pH value of 4.0, and it is necessary to use an external magnetic field to remove ferric oxide nanoparticles in the reaction solution; secondly, the detection of glucose is the same as the detection of hydrogen peroxide. The operation process is complicated, the cost of detection is high, the time is too long, and the accuracy of detection is greatly affected by external conditions such as pH value

Method used

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  • Nanometer blue titanium dioxide colloid and preparation method and application thereof
  • Nanometer blue titanium dioxide colloid and preparation method and application thereof
  • Nanometer blue titanium dioxide colloid and preparation method and application thereof

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Embodiment 1

[0038] The concrete steps of preparation are:

[0039] First, white rutile phase titanium dioxide powder and deionized water are mixed according to the weight ratio of 1:1, and stirred evenly to obtain an emulsion. Then use a laser with a wavelength of ultraviolet, a power of 0.5W, a frequency of 8Hz, and a pulse width of 4ns to irradiate the emulsion for 30 minutes; wherein, the laser emitting wavelength of ultraviolet is a Nd:YAG solid-state laser, and its output wavelength is 355nm. 5mm in diameter, made approximately figure 1 as shown in a, and as figure 1 Nano blue titania colloid shown in the curve in b.

Embodiment 2

[0041] The concrete steps of preparation are:

[0042] First, white rutile phase titanium dioxide powder and deionized water are mixed according to the weight ratio of 3:1, and stirred evenly to obtain an emulsion. Then use a laser with a wavelength of ultraviolet, a power of 1.5W, a frequency of 9Hz, and a pulse width of 5ns to irradiate the emulsion for 25 minutes; wherein, the laser emitting wavelength of ultraviolet is a Nd:YAG solid-state laser, and its output wavelength is 355nm. 8mm in diameter, made approximately figure 1 as shown in a, and as figure 1 Nano blue titania colloid shown in the curve in b.

Embodiment 3

[0044] The concrete steps of preparation are:

[0045] First, white rutile phase titanium dioxide powder and deionized water are mixed according to the weight ratio of 6:1, and stirred evenly to obtain an emulsion. Then use a laser with a wavelength of ultraviolet, a power of 2.5W, a frequency of 10Hz, and a pulse width of 6ns to irradiate the emulsion for 20 minutes; wherein, the laser whose emission wavelength is ultraviolet is a Nd:YAG solid-state laser, and its output wavelength is 355nm. 10mm in diameter, made as figure 1 as shown in a, and as figure 1 Nano blue titania colloid shown in the curve in b.

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Abstract

The invention discloses nanometer blue titanium dioxide colloid and a preparation method and application thereof. The colloid is a nanometer blue titanium dioxide ball, wherein the ball diameter is 20-40nm and the ball is composed of tetravalent titanium ions and trivalent titanium ions according to an atomic percent ratio of 51%: 49%. The preparation method comprises the following steps: firstly, mixing white rutile phase titanium dioxide powder with deionized water according to a weight ratio of (1-10): 1, uniformly stirring to obtain emulsion, and then, irradiating the emulsion by using laser with a wavelength of ultraviolet, power of 0.5-4.5W, frequency of 8-12Hz and a pulse width of 4-8ns for 10-30min to prepare a target product. An aqueous solution of the target product can be used as a detection reagent to detect glucose through a colorimetric method, or a mixed solution of the aqueous solution of the target product, glucose oxidase and a phosphate buffer solution is used as the detection reagent to detect glucose through the colorimetric method; and when used for detection, the target product has the advantages of simple process, good quickness and sensitivity, low detection cost, short time, environmental protection and the detection accuracy is hardly influenced by external factors.

Description

technical field [0001] The invention relates to a colloid, its preparation method and application, in particular to a nanometer blue titanium dioxide colloid, its preparation method and application. Background technique [0002] Hydrogen peroxide, also known as hydrogen peroxide, is an important active intermediate in biology, clinical medicine and environmental circulation. The detection of hydrogen peroxide has important research significance in the fields of pharmaceutical industry, food, clinical medicine and environmental protection. For example, adding a limited amount of hydrogen peroxide to food and milk can play a role in disinfection, bleaching, antisepsis, etc.; excessive hydrogen peroxide can cause various diseases, cause DNA damage and gene mutation of human genetic material, and have cancer risk; Hydrogen oxide is also closely related to the development of senile Parkinson's disease, stroke, arteriosclerosis and diabetic neuropathy. In addition, in the textile...

Claims

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Application Information

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IPC IPC(8): C01G23/053G01N21/31C12Q1/26
Inventor 潘书生许思超张云霞李明王栓李广海
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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