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Method for preparing carbon-film-coated tungsten oxide nanospheres in one step by using hydrothermal process and application of carbon-film-coated tungsten oxide nanospheres

A tungsten oxide and nanosphere technology, which is applied in the preparation/purification of carbon, chemical instruments and methods, tungsten oxide/tungsten hydroxide, etc., can solve the problem that the circuit component system cannot meet the measurement requirements, the accuracy requirements are very high, and the convenience is not enough. problem, to achieve good glucose detection performance, excellent electrochemical performance, strong anti-interference effect

Active Publication Date: 2019-12-13
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the preparation of tungsten oxide still has the disadvantages of inconvenient and low safety.
[0003] Blood glucose monitoring has always been an important part of the medical field. Its requirements for accuracy are very high. General circuit component systems cannot meet its measurement requirements. Therefore, more and more researches have been done on glucose detection. Researchers have found that electrochemical sensors and biosensors are expected to address this conundrum

Method used

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  • Method for preparing carbon-film-coated tungsten oxide nanospheres in one step by using hydrothermal process and application of carbon-film-coated tungsten oxide nanospheres
  • Method for preparing carbon-film-coated tungsten oxide nanospheres in one step by using hydrothermal process and application of carbon-film-coated tungsten oxide nanospheres
  • Method for preparing carbon-film-coated tungsten oxide nanospheres in one step by using hydrothermal process and application of carbon-film-coated tungsten oxide nanospheres

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Weigh 57mg of ammonium paratungstate and 100mg of glucose; fully dissolve the above-weighed ammonium paratungstate in 36ml of deionized water under the condition of ultrasonic heating and heating at 60°C, put in the weighed glucose and stir evenly; put the above-mentioned mixed solution of ammonium paratungstate and glucose into into the reaction kettle, heated at 180°C for 12 hours, then cooled naturally for 10 hours to obtain the turbid liquid after the reaction; the obtained turbid liquid was alternately washed and centrifuged with deionized water and ethanol for several times until the supernatant was nearly colorless, The obtained solid precipitate was vacuum-dried at 40° C. for 12 hours to obtain carbon film-coated tungsten oxide nanosphere powder.

Embodiment 2

[0045] Weigh 57mg of ammonium paratungstate and 100mg of glucose; fully dissolve the above-weighed ammonium paratungstate in 36ml of deionized water under the condition of ultrasonic heating and heating at 60°C, put in the weighed glucose and stir evenly; put the above-mentioned mixed solution of ammonium paratungstate and glucose into Put it into the reaction kettle, heat the hydrothermal reaction at 180°C for 10 hours, then cool it naturally for 10 hours to obtain the turbid liquid after the reaction; wash the obtained turbid liquid with deionized water and ethanol alternately and centrifuge several times until the supernatant is nearly colorless, The obtained solid precipitate was vacuum-dried at 40° C. for 12 hours to obtain carbon film-coated tungsten oxide nanosphere powder.

Embodiment 3

[0047] Weigh 57mg of ammonium paratungstate and 50mg of glucose; fully dissolve the above-weighed ammonium paratungstate in 36ml of deionized water under the condition of ultrasonic heating and heating at 60°C, put in the weighed glucose and stir evenly; put the above-mentioned mixed solution of ammonium paratungstate and glucose into Put it into the reaction kettle, heat the hydrothermal reaction at 180°C for 10 hours, then cool it naturally for 10 hours to obtain the turbid liquid after the reaction; wash the obtained turbid liquid with deionized water and ethanol alternately and centrifuge several times until the supernatant is nearly colorless, The obtained solid precipitate was vacuum-dried at 40° C. for 12 hours to obtain carbon film-coated tungsten oxide nanosphere powder.

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Abstract

The invention relates to a method for preparing carbon-film-coated tungsten oxide nanospheres in one step by using a hydrothermal process and application of the carbon-film-coated tungsten oxide nanospheres. The method comprises the following steps: respectively acquiring tungstate and a carbon source according to a mass ratio of 1: 0.5 to 1: 5, adding the tungstate and the carbon source into deionized water, and carrying out sufficient dissolving to obtain a mixed solution; putting the mixed solution into a reaction kettle, and performing natural cooling after a hydrothermal reaction to obtain a reacted turbid liquid; and cleaning and centrifuging the reacted turbid liquid with deionized water and ethanol, and performing vacuum drying to obtain the carbon-film-coated tungsten oxide nanospheres. The invention also provides a glucose detection sensor electrode prepared from the carbon-film-coated tungsten oxide nanospheres. Compared with the prior art, the preparation method disclosed by the invention has the advantages of simple process, safety, reliability and the like, and the formed detection electrode has the characteristics of high sensitivity, strong anti-interference performance, capability of monitoring blood glucose of a human body in a measurement range and the like.

Description

technical field [0001] The invention relates to a method for preparing tungsten oxide, in particular to a method for preparing carbon film-coated tungsten oxide nanospheres in one step by hydrothermal method and its application. Background technique [0002] The concept of clean energy has gradually penetrated into all areas of life, and hydrolysis catalysts for hydrogen production have become a major research hotspot. Various materials including metals, metal oxides, carbides, nitrides, sulfides and phosphides are continuously being developed. Among them, tungsten oxide (WOx≤3) has attracted much attention because of its good chemical stability, moderate pH value and excellent electrical conductivity. The researchers found that it has considerable photocatalytic and electrocatalytic properties, and it is also an excellent electrode material and supercapacitor due to its good charge storage / transport properties due to the change in W valence (W6+ / W5+). At present, the prep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G41/02C01B32/05B01J35/08B01J35/02B01J35/00B01J23/30
CPCC01G41/02C01B32/05B01J23/30C01P2004/80C01P2004/32C01P2004/52B01J35/33B01J35/40B01J35/51B01J35/39
Inventor 潘云翔彭行翠刘鹏
Owner SHANGHAI JIAO TONG UNIV
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