Preparation method of Ti3C2Tx-based ammonia gas sensor and photo-assisted sensing application of Ti3C2Tx-based ammonia gas sensor

An ammonia gas sensor and sensor technology, applied in instruments, measuring devices, scientific instruments, etc., can solve the problems of complicated operation, high power consumption, high price, etc., and achieve the effect of improving sensitivity

Inactive Publication Date: 2021-06-04
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] At present, the detection of target gases mainly includes gas chromatography, infrared spectroscopy, electrochemical sensor method, photoacoustic spectroscopy and other methods, and these methods have problems such as complex system structure, cumbersome operation, high price, and high power consumption. , many disadvantages such as high working temperature

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  • Preparation method of Ti3C2Tx-based ammonia gas sensor and photo-assisted sensing application of Ti3C2Tx-based ammonia gas sensor
  • Preparation method of Ti3C2Tx-based ammonia gas sensor and photo-assisted sensing application of Ti3C2Tx-based ammonia gas sensor
  • Preparation method of Ti3C2Tx-based ammonia gas sensor and photo-assisted sensing application of Ti3C2Tx-based ammonia gas sensor

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Embodiment

[0063] A kind of Ti 3 C 2 T x A method for constructing an ammonia-based sensor, wherein the preparation process includes:

[0064] ①Synthesis of Ti 3 C 2 T x :

[0065] At room temperature, 10 g of Ti 3 AlC 2 (referred to as MAX) was mixed with 100 mL of 50 wt% concentrated HF aqueous solution for 2 hours; then the resulting suspension was washed with deionized water, centrifuged and vacuum-dried to obtain Ti 3 C 2 T x powder;

[0066] ②Synthesis of (001)TiO by hydrothermal method 2 / Ti 3 C 2 T x :

[0067] To obtain Ti 3 C 2 T x Powder as base material, NaBF 4 As a crystal surface control agent, use water as solvent, acidic environment, hydrothermal reaction at 160°C for 8-32h; after cooling, wash the reaction product with deionized water, centrifuge and vacuum dry to obtain (001)TiO 2 / Ti 3 C 2 T x Material;

[0068] ③The composite film sensor for detecting the volatile gas components of meat was prepared by screen printing process.

[0069] The sch...

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Abstract

The invention relates to the technical field of gas sensitive sensor detection, in particular to a preparation method of a Ti3C2Tx-based ammonia gas sensor and photo-assisted application of the Ti3C2Tx-based ammonia gas sensor. The preparation process of the Ti3C2Tx-based ammonia gas sensor comprises the following steps of synthesizing Ti3C2Tx, synthesizing (001) TiO2 / Ti3C2Tx by a hydrothermal method, and preparing the composite film sensor for detecting volatile gas components of meat by a screen printing process. The obtained gas-sensitive sensor can obtain better performance by means of the assistance of ultraviolet light in the application of ammonia gas detection, is expected to be applied to meat freshness monitoring, realizes volatile gas recognition and concentration detection of fresh meat, and has important practical significance for guaranteeing the food safety of meat.

Description

technical field [0001] The invention relates to the technical field of gas sensor detection, in particular to a Ti 3 C 2 T x Preparation method of base ammonia gas sensor and its application under light assistance. Background technique [0002] With the improvement of people's quality of life, the requirements for ensuring food safety, especially cold chain fresh food safety, are becoming more and more important. At the same time, reserved meat has become an important resource as a meat product reserved for abnormal market fluctuations and market regulation caused by major natural disasters, public health incidents, animal epidemics or other emergencies. We all know that the deterioration of high-protein foods such as pork, fish, and shrimp will cause most of the nitrogen to be released to the outside, which is the cause of the unpleasant smell caused by the decomposition of meat. Today, monitoring the decay process of meat depends on the detection of total volatile basi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/12
CPCG01N27/125
Inventor 张冬至于素静曾景斌李停停王兴伟
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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