Related Experiment Video
Updated: May 9, 2026
Preparation and Use of Photocatalytically Active Segmented Ag|ZnO and Coaxial TiO2-Ag Nanowires Made by Templated Electrodeposition
Published on: May 2, 2014
Ozone-assisted cataluminescence sensor based on morphology-controlled TiO2@Mg-MOF-74 composite for rapid detection of
Zhaoxia Shi1, Zhen Luo2, Yilu Liu3
1Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu, 476000, China. shizhaoxia@sqnu.edu.cn.
None:
Four different morphologies of TiO2 were successfully synthesized and the morphological dependence of the catalytic performance was investigated for monitoring of n-hexane. TiO2 nanotubes showed the best catalytic performance for the cataluminescence (CTL) reaction of n-hexane because of their high specific surface area and ordered arrangement. To further enhance catalytic activity, a TiO2 nanotube@Mg-MOF-74 composite was synthesized, which was used to construct a CTL sensor for rapid detection of n-hexane rapidly; the introduction of Mg-MOF-74 improved the adsorption capacity and selectivity. A CTL sensor was constructed based on TiO2 nanotube@Mg-MOF-74 for the rapid detection of n-hexane, Under the optimal conditions there was a good linear relationship between CTL signal intensity and the concentration of n-hexane in the range 0.20-200.0 mg/L. The detection limit (LOD, S/N = 3) was 0.08 mg/L. The RSD values for 11 consecutive measurements using the same sensor and 7 different sensors were 2.8% (n = 11) and 3.5% (n = 7), respectively, demonstrating good repeatability and reproducibility. Finally, the sensor was used to detect n-hexane in air samples from different workplaces, with recoveries ranging from 90.2 to 106.4%, showing good accuracy. Thus, the developed CTL sensor could be used for rapid detection of n-hexane in air, avoiding damage to health caused by excessive inhalation.
