Novel metal-organic frameworks-based hydrogen sulfide cataluminescence sensors

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• 作者：Xiangyu WanAuthor Vitae ; Liqian WuAuthor Vitae ; Lichun ZhangAuthor Vitae ; Hongjie Song ; ^{songhj@scu.edu.cn" class="auth_mail" title="E-mail the corresponding author}Author Vitae ; Yi Lv ; ^{lvy@scu.edu.cn" class="auth_mail" title="E-mail the corresponding author}Author Vitae
• 关键词：Hydrogen sulfide ; Metal-organic frameworks (MOFs) ; Gas sensor ; Cataluminescence
• 刊名：Sensors & Actuators: B. Chemical
• 出版年：2015
• 出版时间：1 December 2015
• 年：2015
• 卷：220
• 期：Complete
• 页码：614-621
• 全文大小：2588 K

文摘

In the present work, a novel H₂S cataluminescence (CTL) sensor based on metal-organic frameworks (MOFs) was established. Four MOFs, including MIL-100(Fe), MIL-101(Cr), Zn₃(BTC)₂·12H₂O and ZIF-8 were tested as CTL sensing materials. Among them, MIL-100(Fe) showed high CTL intensity for H₂S, but it would be damaged after CTL experiment. MIL-101(Cr) showed just a low CTL signal and also destructed after contacting with H₂S. Excitingly, Zn₃(BTC)₂·12H₂O and ZIF-8 displayed good sensitivity and stability for H₂S. Then, the CTL characteristics and optimal parameters of these two MOFs were investigated in detail and the possible CTL mechanism was also discussed. Under the optimized conditions, the calibration curves of CTL intensity versus H₂S concentration have linear regression coefficients (R) of >0.99 at low concentration, which renders MOFs interesting candidates for constructing H₂S CTL sensor.