Nanocomposite of Ag-Polyacrylonitryle as a Selective Chlorine Sensor

Abstract

Gas-sensing elements based on Ag-containing polyacrylonitrile (PAN) films using different temperature and time modes of a two stage IR-pyrolysis have been fabricated. It has been investigated that the gas sensitivity of the samples depends on the composition of the original film-forming solution and on the process parameters of forming the film material. It has been studied that the samples demonstrate gas-sensing properties to Cl2 at room temperature. The outcome of this study is that Ag-containing PAN films can be considered as one of the most promising material to be used in electronic engineering.

A Monte Carlo Method for Simulating Drying Temperature of the Gas-Sensing Material Based on Polyacrylonitrile

“…where R o is the resistance in air, R g is the resistance in the atmosphere of the detected gas [1].…”

“…Organic polyconjugated polymers have attracted considerable attention for room temperature gas sensing applications. The relevance of research of polyacrylonitrile (PAN) thin films are caused by its properties which give a number of advantages of using them for a gas-sensing layers design [1,2]. PAN is a linear dielectric polymer which turns into a semiconductor material under pyrolysis without changing its basic structure.…”

Sensing Techniques on Determination of Chlorine Gas and Free Chlorine in Water

“…The sensor showed an increase in conductivity upon exposure of Cl 2 gas, as Cl 2 is a gas oxidizer and acceptor of electron, decreas-ing the hole concentration in sensing material. The reaction mechanism of chlorine detection pointing to the sensing material is a p-type semiconductor characteristic [92]. Sultan et al fabricated a toxic chlorine sensor using polypyrrole (PPy) as the sensing film.…”

Choice of technological conditions for synthesis of sensing materials based on polyacrylonitrile on flexible substrates

“…The technology of fabrication gas sensitive PAN films that does not require high-tech equipment and the ability to exhibit gas-sensing properties at room temperatures opens the prospect of creating flexible sensors. The gas-sensitive metal-containing PAN thin films have been fabricated [6] that are sensors for detecting to CO, NO2, Cl2, NH3, H2S [7][8][9][10].…”