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

Environmental Science and Engineering Institute, Guangzhou University, 510006, Guangzhou, China
* Author to whom correspondence should be addressed.
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

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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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