Pd quantum dot-containing MoO3 nanofiber paper H2 sensor and preparation method thereof

Abstract

The invention discloses a Pd quantum dot-containing MoO3 nanofiber paper H2 sensor and a preparation method thereof. According to the Pd quantum dot-containing MoO3 nanofiber paper, in the process of preparing the pure MoO3 nanofiber paper, a right amount of Pd quantum dots (also called Pd nanoparticles) are doped for carrying out modification to obtain the Pd quantum dot modified MoO3 nanofiber paper. According to the hydrogen sensor produced by adopting the Pd quantum dot modified MoO3 nanofiber paper, in an environment with relatively low hydrogen concentration, the initial resistance of the sensor is smaller, both the response time and the recovery time of the sensor become shorter, the sensitivity is higher, the sensor can work at ordinary temperature, has stable properties and is reusable, and the integrated hydrogen-sensitive elements also can be integrated conveniently in various flexible circuits. The preparation method disclosed by the invention has a simple process, low energy consumption and no pollution of the manufacturing process.

Description

technical field [0001] The present invention relates to Pd-containing quantum dot MoO 3 Nanofiber Paper H 2 The sensor and its preparation method belong to the technical field of inorganic nano functional material and hydrogen sensor. Background technique [0002] As an efficient and clean fuel, reducing gas, and carrier gas, hydrogen has been widely used in many fields such as medical treatment, medicine, petrochemical, and metallurgy. However, hydrogen is a colorless, odorless, small molecular weight, flammable and explosive gas. During production, transportation and use, hydrogen leakage is very easy to occur and diffuses quickly, and it is difficult to be detected by human senses. High sensitivity must be used The detection device realizes hydrogen leakage detection quickly, safely and reliably. Existing hydrogen sensors based on bubble test, catalytic combustion, mass spectrometer detection, electrochemical method, ultrasonic method, etc. all have disadvantages such ...

AI Technical Summary

Problems solved by technology

However, hydrogen is a colorless, odorless, small molecular weight, flammable and explosive gas. During production, transportation and use, hydrogen leakage is very easy to occur and diffuses quickly, and it is difficult to be detected by human senses. High sensitivity must be used Detection device, fast, safe and reliable detection of hydrogen leaks

Existing hydrogen sensors based on bubble testing, catalytic combustion, mass spectrometer detection, electrochemical methods, ultrasonic methods, etc., all have shortcomings such as low safety and poor detection accuracy

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