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Molecularly Imprinted Heterostructure-Based Electrochemosensor for Ultratrace and Precise Detection of 2-Methylisoborneol in Water
ACS Sensors ( IF 8.2 ) Pub Date : 2024-01-05 , DOI: 10.1021/acssensors.3c02561
Jiaxin Xiao 1 , Shumin Zhu 1 , Lingjun Bu 1 , Shiqing Zhou 1
ACS Sensors ( IF 8.2 ) Pub Date : 2024-01-05 , DOI: 10.1021/acssensors.3c02561
Jiaxin Xiao 1 , Shumin Zhu 1 , Lingjun Bu 1 , Shiqing Zhou 1
Affiliation
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Ultratrace 2-methylisoborneol (2-MIB, ∼ng/L) in source water is the main odorant in the algae-derived odor episodes, whose accurate on-site detection will have a promising application potential. Due to the chemical inertness of 2-MIB, sensitive and selective detection of 2-MIB remains much challenging. Herein, molecularly imprinted polymer cavities were polymerized on the heterostructure Ti3C2Tx@CuFc-metal–organic framework to selectively capture 2-MIB, where the heterostructure could catalyze the probe redox reaction of [Fe(CN)63–/4–] and amplify the corresponding current signals. The prepared electrochemical sensor showed higher sensitivity on 2-MIB detection than the reported ones. Excellent stability, reusability, and selectivity for 2-MIB detection were also verified. The linear range and limit of detection of our sensor for 2-MIB were optimized to 0.0001–100 μg/L and 30 pg/L, respectively, performing much better than the reported sensors. Comparable performance to gas chromatography–mass spectrometry was achieved when the sensor was applied to real water samples with or without 2-MIB standards. Overall, our research has made great progress in the application of an on-site sensor in 2-MIB detection and well advances the development of molecularly imprinted polymer-based electrochemical sensors.
中文翻译：
基于分子印迹异质结构的电化学传感器用于水中 2-甲基异龙脑的超痕量和精确检测
源水中的超痕量2-甲基异冰片（2-MIB，∼ng/L）是藻类臭气事件中的主要臭味物质，其准确的现场检测将具有广阔的应用潜力。由于 2-MIB 的化学惰性，2-MIB 的灵敏和选择性检测仍然具有很大的挑战性。在此，分子印迹聚合物空腔聚合在异质结构Ti 3 C 2 T x @CuFc-金属-有机框架上以选择性捕获2-MIB，其中异质结构可以催化[Fe(CN) 6 3-/的探针氧化还原反应。 4- ]并放大相应的电流信号。所制备的电化学传感器对 2-MIB 检测的灵敏度高于报道的传感器。还验证了 2-MIB 检测的出色稳定性、可重复使用性和选择性。我们的传感器对 2-MIB 的线性范围和检测限分别优化为 0.0001–100 μg/L 和 30 pg/L，性能比报道的传感器好得多。当传感器应用于含有或不含 2-MIB 标准品的真实水样时，可实现与气相色谱-质谱分析相当的性能。总体而言，我们的研究在现场传感器在2-MIB检测中的应用方面取得了很大进展，并很好地推动了分子印迹聚合物电化学传感器的发展。
更新日期：2024-01-05
中文翻译：
基于分子印迹异质结构的电化学传感器用于水中 2-甲基异龙脑的超痕量和精确检测
源水中的超痕量2-甲基异冰片（2-MIB，∼ng/L）是藻类臭气事件中的主要臭味物质，其准确的现场检测将具有广阔的应用潜力。由于 2-MIB 的化学惰性，2-MIB 的灵敏和选择性检测仍然具有很大的挑战性。在此，分子印迹聚合物空腔聚合在异质结构Ti 3 C 2 T x @CuFc-金属-有机框架上以选择性捕获2-MIB，其中异质结构可以催化[Fe(CN) 6 3-/的探针氧化还原反应。 4- ]并放大相应的电流信号。所制备的电化学传感器对 2-MIB 检测的灵敏度高于报道的传感器。还验证了 2-MIB 检测的出色稳定性、可重复使用性和选择性。我们的传感器对 2-MIB 的线性范围和检测限分别优化为 0.0001–100 μg/L 和 30 pg/L，性能比报道的传感器好得多。当传感器应用于含有或不含 2-MIB 标准品的真实水样时，可实现与气相色谱-质谱分析相当的性能。总体而言，我们的研究在现场传感器在2-MIB检测中的应用方面取得了很大进展，并很好地推动了分子印迹聚合物电化学传感器的发展。
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