基于电活性苯胺三聚体装饰的 MIL-88B(Fe)硫化氢传感器的有机-无机混合复合材料

IF 8 1区化学 Q1 CHEMISTRY, ANALYTICAL

Sensors and Actuators B: Chemical Pub Date : 2024-09-19 DOI:10.1016/j.snb.2024.136659

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引用次数: 0

摘要

本研究提出了一种通过加入苯胺三聚体（ACAT）来增强 MIL-88B（Fe）的 H₂S 传感能力的新方法。详细介绍了 ACAT、MIL-88B(Fe) 及其复合材料 ACAT-MIL-88B(Fe)的成功合成和综合表征。ACAT-MIL-88B(Fe) 传感器的性能明显优于其他传感器，在 9-10 ppm H₂S 浓度下，灵敏度提高到 643.5%，响应时间迅速达到 288 秒。即使在相对湿度为 90% 的情况下，它仍能保持高灵敏度（450 % 响应），而且对 H₂S 的选择性优于其他气体。稳定性测试表明，16 天内的响应率超过 600%。密度泛函理论（DFT）计算证实，H₂S 在 MIL-88B(Fe)的 Fe 位点的吸附最为稳定，ACAT 可增强这种相互作用。这种创新型传感器有望在工业应用中实现高灵敏度、高选择性和高稳定性的 H₂S 检测。

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Hybrid organic-inorganic composite based on electroactive aniline trimer decorated MIL-88B(Fe) as hydrogen sulfide sensor

This study presents a novel approach to enhancing MIL-88B(Fe) for H₂S sensing by incorporating aniline trimer (ACAT). The successful synthesis and comprehensive characterization of ACAT, MIL-88B(Fe), and their composite, ACAT-MIL-88B(Fe), are detailed. The ACAT-MIL-88B(Fe) sensor demonstrates significantly superior performance, with a sensitivity increase to 643.5 % at 9–10 ppm H₂S and a rapid response time of 288 seconds. It maintains high sensitivity (450 % response) even at 90 % relative humidity and shows excellent selectivity for H₂S over other gases. Stability tests confirm over 600 % responsiveness over 16 days. Density Functional Theory (DFT) calculations validate that H₂S adsorption is most stable at the Fe site of MIL-88B(Fe), with ACAT enhancing this interaction. This innovative sensor holds promise for highly sensitive, selective, and stable H₂S detection in industrial applications.

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来源期刊

Sensors and Actuators B: Chemical 工程技术-电化学

CiteScore

14.60

自引率

11.90%

发文量

1776

审稿时长

3.2 months

期刊介绍： Sensors & Actuators, B: Chemical is an international journal focused on the research and development of chemical transducers. It covers chemical sensors and biosensors, chemical actuators, and analytical microsystems. The journal is interdisciplinary, aiming to publish original works showcasing substantial advancements beyond the current state of the art in these fields, with practical applicability to solving meaningful analytical problems. Review articles are accepted by invitation from an Editor of the journal.