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Hydrogen peroxide sensitive material and method for making same and application

A technology of hydrogen peroxide and sensitive materials, which is applied in the direction of material analysis by observing the influence of chemical indicators, analysis by making materials undergo chemical reactions, and material excitation analysis, etc. It can solve the problems of difficult long-term storage and high price of biological enzymes. , inactivation or activity reduction and other issues, to achieve good market prospects, easy to use, easy to prepare the effect

Inactive Publication Date: 2007-09-12
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Electrochemical method has very high sensitivity, but it generally will utilize reagents such as enzyme or simulated enzyme as reaction reagent, and this makes its stability reduce, and has increased the cost of detection greatly (Zhang Lingyan etc., Chemical Acta, 2006, 64, 1711 -1751; Darder M. et al. Anal. Chem. 1999, 71, 5530-5537)
The sensitivity of the fluorescence spectrophotometry is high. Because the enzyme is used as the reaction reagent, the method has a relatively good selectivity, but the price of the biological enzyme is high, and it is not easy to store for a long time. The inactivation or activity reduction during use will affect the actual Analysis brings many inconveniences
Phosphorescence spectroscopic analysis has the characteristics of simplicity and sensitivity, and has been used for trace analysis, but there is no report on the use of phosphorescence emitted by phosphors to measure hydrogen peroxide.

Method used

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  • Hydrogen peroxide sensitive material and method for making same and application
  • Hydrogen peroxide sensitive material and method for making same and application
  • Hydrogen peroxide sensitive material and method for making same and application

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Embodiment 1 Preparation of hydrogen peroxide sensitive material of the present invention

[0040] 1. Use ethyl orthosilicate and butyl titanate as the main raw materials to prepare the gel: first, measure 10ml of isopropanol and pour it into a beaker, then add 1ml of orthosilicate and 3ml of butyl titanate (molar ratio of about Ti:Si=1:3.4), stirred for 20 minutes, and distilled water was added dropwise until the gel was formed.

[0041] 2. Put the obtained gel into a muffle furnace, slowly raise the temperature to 550° C., and roast the volatile organic components for 40 minutes to obtain an intermediate product containing only Si, Ti and O. Finally, the intermediate product is calcined at an optimal temperature of 550° C. for 1 h, and the calcined product is ground to obtain the hydrogen peroxide sensitive material of the present invention.

Embodiment 2

[0042] Embodiment 2 Preparation of a sensor for detecting solution hydrogen peroxide according to the present invention

[0043] According to the size of the flow cell of the fluorometer of the present invention, the hydrogen peroxide sensitive material powder of the present invention prepared in Example 1 is pressed into a circular sheet to obtain the sensor of the present invention, which can be directly used after being put into the flow cell. Apparently, under the conditions of different measuring environments and measuring instruments, hydrogen peroxide sensitive materials can be compressed into sheets or blocks of different specifications to be used as sensors.

Embodiment 3

[0044] Embodiment three The preparation of the kit for detecting solution hydrogen peroxide of the present invention

[0045] TiO of the present invention 2 / SiO 2 The titanium-silicon composite sensor and the color comparison card are put into a packaging box to obtain the qualitative and semi-quantitative test kit for measuring the concentration of hydrogen peroxide in a solution of the present invention.

[0046] TiO of the present invention 2 / SiO 2 The titanium-silicon composite sensor and the independently light-proof packaged hydrogen peroxide are packed into a packaging box together to obtain a kit for quantitatively detecting the concentration of hydrogen peroxide in a solution of the present invention. When in use, hydrogen peroxide is formulated into (a) 0, (b) 7.0×10 -7 M, (c)7.0×10 -6 M, (d) 7.0×10 -5 M, (e)7.0×10 -4 M, (f)7.0×10 -3 M, and (g)7.0×10 -2 M hydrogen peroxide standard solution for use. During the test, conventional instruments in the field s...

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PUM

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Abstract

This invention belong to composite region, refer a hydrogen peroxide sensitive material and preparation method and its using in solution hydrogen peroxide detection. Hydrogen peroxide sensitive material possess TiO2 / SiO2 structure, Ti and Si in proper of 1 : 2-4. This hydrogen peroxide sensitive material could quickly and expediently, qualitative and quantitative detect drop hydrogen peroxide, and be able to reuse after using certain reducer to carry out reducing treatment, more economy.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a hydrogen peroxide-sensitive material, a preparation method thereof, and an application of the hydrogen peroxide-sensitive material in detecting hydrogen peroxide in a solution. technical background [0002] Hydrogen peroxide (H 2 o 2 ) are widely used in industry for catalysis and disinfection, which indirectly leads to H 2 o 2 Pollution of water and air. h 2 o 2 It is also an important chemical substance in biological systems, which seriously affects cell function and metabolism. In recent years, active substances (singlet oxygen, hydroxyl radicals, peroxides, superoxides, etc.) in natural water (surface water, atmospheric water droplets, precipitation, etc.) have attracted great attention. These active substances are closely related to photochemical reactions and redox reactions in natural water, and are important factors affecting the migration, transfor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64G01N21/77
Inventor 肖丹袁红雁杨秀培舒晓红陈颖
Owner SICHUAN UNIV
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