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Sensors 2006, 6(12), 1827-1836; doi:10.3390/s6121827
Article

Studies of the Cataluminescence of Benzene Homologues onNanosized γ–Al2O3/Eu2O3 and the Development of a Gas Sensorfor Benzene Homologue Vapors

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Received: 26 October 2006; Accepted: 19 December 2006 / Published: 26 December 2006
(This article belongs to the Special Issue Gas Sensors)
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Abstract: The cataluminescence (CTL) of benzene and the benzene homologues tolueneand xylene on nanosized γ–Al2O3 doped with Eu2O3 (γ–Al2O3/Eu2O3) was studied and asensor of determining these gases was designed. The proposed sensor showed highsensitivity and selectivity at an optimal temperature of 432 ºC, a wavelength of 425 nm anda flow rate of 400 mL/min. Quantitative analysis was performed at the optimal conditions.The linear ranges of CTL intensity versus concentration of the benzene homologues were asfollows: benzene 2.4~5000 mL/m3, toluene 4.0~5000 mL/m3 and xylene 6.8~5000 mL/m3,with detection limits (3σ) of 1.8 mL/m3, 3.0 mL/m3 and 3.4 mL/m3 for each one,respectively. The response time of this system was less than 3 s. The coexistence of othergases, such as SO2, CO and NH3, caused interference at levels around 11.7%, 5.8% and8.9% respectively. The technique is a convenient and fast way of determining the vapors ofbenzene homologues in air.
Keywords: Cataluminescence; benzene homologues; gas sensor; nanosized γ–Al2O3+Eu2O3 Cataluminescence; benzene homologues; gas sensor; nanosized γ–Al2O3+Eu2O3
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Lu, J.; Cao, X.; Pan, C.; Yang, L.; Lai, G.; Chen, J.; Wu, C. Studies of the Cataluminescence of Benzene Homologues onNanosized γ–Al2O3/Eu2O3 and the Development of a Gas Sensorfor Benzene Homologue Vapors. Sensors 2006, 6, 1827-1836.

AMA Style

Lu J, Cao X, Pan C, Yang L, Lai G, Chen J, Wu C. Studies of the Cataluminescence of Benzene Homologues onNanosized γ–Al2O3/Eu2O3 and the Development of a Gas Sensorfor Benzene Homologue Vapors. Sensors. 2006; 6(12):1827-1836.

Chicago/Turabian Style

Lu, Jieshan; Cao, Xiaoan; Pan, Canying; Yang, Lianfeng; Lai, Guangbo; Chen, Jianling; Wu, Cuiqin. 2006. "Studies of the Cataluminescence of Benzene Homologues onNanosized γ–Al2O3/Eu2O3 and the Development of a Gas Sensorfor Benzene Homologue Vapors." Sensors 6, no. 12: 1827-1836.


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