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Preparation method for gold-loaded tin oxide nanometer material for detecting hydrogen

A nanomaterial, tin oxide technology, applied in tin oxide, metal processing equipment, transportation and packaging, etc., can solve the problems of bulky equipment, low sensitivity, poor stability, etc., to achieve fast response recovery, accurate and detailed data, and product purity. Good results

Active Publication Date: 2016-06-15
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Chromatographic analysis and mass spectrometry are commonly used in the detection of conventional hydrogen, but these equipment are bulky, the detection procedures are complicated, and the error is relatively large; the more advanced hydrogen detection method is to use gas sensors, which can directly detect various technical parameters of hydrogen; gas Most of the detection materials used in sensors are gas-sensitive materials, such as zinc oxide, tin oxide, titanium oxide, and tungsten oxide, but most of these gas-sensitive materials have low sensitivity, slow response speed, and poor stability, and it is difficult to meet the requirements of gas sensors; To improve the high performance requirements of gas sensors, the gas-sensing materials are often doped with load agents to enhance the gas-sensing properties of the gas-sensing materials. This technology is still under study

Method used

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  • Preparation method for gold-loaded tin oxide nanometer material for detecting hydrogen
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  • Preparation method for gold-loaded tin oxide nanometer material for detecting hydrogen

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Embodiment Construction

[0066] The present invention will be further described below in conjunction with accompanying drawing:

[0067] figure 1 As shown, it is the state diagram of hydrothermal synthesis of gold-loaded tin oxide, the position and connection relationship of each part must be correct, the proportion should be proportioned, and the operation should be done in sequence;

[0068] Quantities of chemicals used in preparation are determined in pre-set ranges in grams, milliliters, centimeters 3 is the unit of measurement.

[0069] The preparation of gold-supported tin oxide nanoparticles is carried out in the reactor, and is completed in the process of heating, hydrolysis and polymerization;

[0070] The heating furnace is vertical, the lower part of the heating furnace 1 is the first electric control box 2, and the upper part is the furnace cover 11; a reaction kettle 7 is placed in the middle of the heating furnace 1, and a polytetrafluoroethylene container 8 is placed inside the reacti...

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Abstract

The invention relates to a preparation method for a gold-loaded tin oxide nanometer material for detecting hydrogen. In order to deal with the conditions that hydrogen detecting gas sensitive materials are low in sensitivity, low in response speed and poor in stability, the gold-loaded tin oxide nanometer material is made from potassium stannate, chloroauric acid and glucose and prepared through the steps of hydro-thermal synthesis through a reaction still, vacuum heat treatment and grinding and sieving. According to the preparation method, the process is advanced, and data are full and accurate; products are atropurpureus crystals, the crystal particle diameter is smaller than or equal to 80 nm, and the product purity is high and reaches 99.6%; the gas sensitivity of the material on 100 ppm hydrogen reaches 25, response time is 1 s, and recovery time is 3 s; the sensitivity is high, response and recovery are fast, and the material can be applied to a gas sensor for detecting hydrogen. The preparation method for the gold-loaded tin oxide nanometer material is quite advanced.

Description

technical field [0001] The invention relates to a method for preparing a gold-supported tin oxide nanometer material for detecting hydrogen, and belongs to the technical field of preparation and application of gas-sensitive materials. Background technique [0002] Hydrogen is a clean energy with abundant reserves, high energy, and recyclability. Hydrogen has been used in various industrial fields, such as: high-energy batteries, glass manufacturing, steel smelting, petroleum refining, internal combustion engines, metal cutting, etc.; but hydrogen is A colorless, tasteless, odorless, flammable and explosive gas with an explosion range of 4%-75%; hydrogen is easy to cause leakage during storage, transportation and use, how to detect and prevent hydrogen leakage is very important research topic. [0003] Chromatographic analysis and mass spectrometry are commonly used in the detection of conventional hydrogen, but these equipment are bulky, the detection procedures are complic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F1/00C01G19/02
CPCC01G19/02B22F9/24C01P2002/72C01P2004/03C01P2004/64C01P2006/80B22F1/054
Inventor 胡杰王莹赵振廷冀健龙李朋伟张文栋
Owner TAIYUAN UNIV OF TECH
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