Due to the toxicity and corrosiveness of the ammonia gas, low-cost, portable, and accurate methods of ammonia detection are of great importance in environmental testing and disease diagnosis. In this study, flower-like UIO-66-NH@MoS composite modified screen-printed electrodes (SPEs) were prepared by hydrothermal treatment using ionic liquids [BMIM][BF] as electrolytes. The UIO-66-NH@MoS/SPEs were then combined with a miniature electrochemical workstation to construct a novel electrochemical ammonia sensor. The experimental results showed that UIO-66-NH@MoS had excellent adsorption capacity for ammonia, exhibiting good linearity in the range of 5–500 ppm with a low limit of detection (2.1 ppm) and a fast response time for 100 ppm ammonia (13 s). This sensor also possessed excellent stability, reproducibility, and anti-interference ability. The synthesized UIO-66-NH@MoS nanocomposite was demonstrated to be an excellent candidate for the construction of high-performance ammonia sensors for various applications.

中文翻译：

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基于花状结构UIO-66-NH2@MoS2复合材料的便携式电化学室温传感器用于氨检测

由于氨气的毒性和腐蚀性，低成本、便携式、准确的氨气检测方法在环境检测和疾病诊断中具有重要意义。本研究以离子液体[BMIM][BF]为电解质，通过水热处理制备了花状UIO-66-NH@MoS复合修饰丝网印刷电极（SPE）。然后将UIO-66-NH@MoS/SPE与微型电化学工作站结合起来构建新型电化学氨传感器。实验结果表明，UIO-66-NH@MoS对氨具有优异的吸附能力，在5-500 ppm范围内表现出良好的线性，检测限低（2.1 ppm），对100 ppm氨具有快速响应时间（ 13秒）。该传感器还具有优异的稳定性、重复性和抗干扰能力。合成的 UIO-66-NH@MoS 纳米复合材料被证明是构建各种应用的高性能氨传感器的绝佳候选者。