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Sensitive detection of H2S in the environment with electrochemiluminescence and fluorescence double-mode sensor constructed by Eu2O3@CDs NPs
Sensors and Actuators B: Chemical ( IF 8.0 ) Pub Date : 2024-09-04 , DOI: 10.1016/j.snb.2024.136582 Chunyuan Tian , Feiyan Tang , Mingxia Wang , Jie Zhou , Xidian Yue , Feng Luan , Xuming Zhuang
Sensors and Actuators B: Chemical ( IF 8.0 ) Pub Date : 2024-09-04 , DOI: 10.1016/j.snb.2024.136582 Chunyuan Tian , Feiyan Tang , Mingxia Wang , Jie Zhou , Xidian Yue , Feng Luan , Xuming Zhuang
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In this work, an eco-friendly and rapid dual-mode detection method for H2S based on europium oxide doped with carbon quantum dots nanocomposites (Eu2O3@CDs NPs) is proposed. An efficient electrochemiluminescence (ECL) sensor and dual emission ratio type fluorescence (FL) sensor was constructed by Eu2O3@CDs NPs, which exhibit excellent ECL and FL properties. It successfully realized the precise quantitative detection of H2S due to the influence of the sulfion (S2-) to resonance energy transfer mechanism in Eu2O3@CDs NPs and the extremely short response time greatly improves the analysis efficiency. Ultimately, a good linear relationship in the concentration range of 1 pM to 10 mM and 50 nM to 0.5 mM of H2S was acquired, respectively, and the detection limit was as low as 0.0537 pM and 4.88 nM (S/N = 3). In addition, both sensors show excellent selectivity, and stability, and provide a novel idea for establishing H2S sensors.
更新日期：2024-09-04
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