Molecular recognition and quantitative analysis of xylene isomers utilizing cataluminescence sensor array

Abstract

A facile and effective sensor array consisting of three cataluminescence (CTL) sensors based on nanomaterial Y(2)O(3), γ-Al(2)O(3) and ZrO(2) as probes was firstly proposed for the molecular recognition and quantitative analysis of xylene isomers. Under the optimized conditions, the linear range of CTL intensity versus concentration of xylene isomers was 86.70-8670.00 mg m(-3). The use of a sensor array instead of a single sensor has provided a novel strategy for the process of identifying similar chemical compounds, which should have a bright future in environmental and industrial monitoring.

Facial synthesis of hexagonal metal oxide nanoparticles for low temperature ammonia gas sensing applications

“…Out of numerous reports on gas sensitivity of metal oxides, more than half of the reports are based on SnO 2 and ZnO for the detection of different gases such as NO x , NH 3 , ethanol, methanol, acetone, chloroform, CO, H 2 S, etc. Shouli et al 16 10,[18][19][20][21][22] These chemical vapors not only responsible for environmental pollution which causes acid rain or green house type of effects but their direct exposure creates serious health problems. 4,7,8,[11][12][13][14][15][16][17][18][19][20][21][22] But these materials still straggling with the problem of high operating temperature (150-450 o C), which require special attention.…”

A Highly Sensitive Diketopyrrolopyrrole‐Based Ambipolar Transistor for Selective Detection and Discrimination of Xylene Isomers

“…However, it requires expensive equipment and well‐trained operators, making HRGC unsuitable for environmental monitoring. A number of methods, including mass sensor arrays, chemiresistor sensor arrays, sensors based on metal oxide semiconductors, and cataluminescence sensor arrays, have been developed for cost‐effective detection of xylene isomers. Although selective detection has been achieved with arrays of sensors, their detection limits are always very high (e.g., 10 4 , 10 3 , and 400 ppm as reported in refs.…”

Cataluminescence‐based sensors: principle, instrument and application

“…Li et al . used this system with three sensor elements of Y 2 O 3 , γ‐Al 2 O 3 and ZrO 2 , respectively, for quantitative analysis of xylene isomer .…”

“…Compared with the CTL-based sensor array with a single element, the CTL-based sensor array with multi-elements has significant advantages, such as high reliability, excellent repetition and good ability of recognition. As a result, we can see more studies of CTL-based sensor arrays with multi-elements (22)(23)(24)(25)37,44,(78)(79)(80)(81)(82)(83)(84)(85)(86) than those with a single element in practice.…”

“…Cao and Zhang used this sensor array system, which consists of three sensor elements based on nanosized SrCO 3 , γ-Al 2 O 3 and BaCO 3 , for quantitative analysis of explosive gases, propane, n-butane and iso-butane in a mixture (81). Li et al used this system with three sensor elements of Y 2 O 3 , γ-Al 2 O 3 and ZrO 2 , respectively, for quantitative analysis of xylene isomer (84).…”