The functionalization and incorporation of noble metals in metal–organic frameworks have been widely used as efficient methods to enhance their applicability. Herein, a sulfone-functionalized Zr-MOF framework labeled Zr–BPDC–SO₂ (BPDC–SO₂ = dibenzo[b,d]-thiophene-3,7-dicarboxylate 5,5-dioxide) and its Pd-embedded composite were efficiently synthesized by adjusting their functional groups. The obtained compounds were characterized to assess their potential for gas sensing applications. X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, specific surface area measurements, and thermogravimetric analysis were employed to characterize the new sensor materials. The gas sensing properties of the novel functionalized sensor materials were systematically investigated under various temperature, concentration, and gas type conditions. Owing to the strong hydrogen bonds of the sulfonyl groups and Zr₆ clusters in the framework with the hydroxyl groups of ethanol, Zr–BPDC–SO₂ emerged as an effective sensor for ethanol detection. In addition, Pd@Zr–BPDC–SO₂ exhibited efficient hydrogen sensing performance, in terms of sensor dynamics and response. More importantly, the material showed a higher sensing response to hydrogen than to other gases, highlighting the important role of Pd in the Zr-MOF-based hydrogen sensor. The results of the sensing tests carried out in this study highlight the promising potential of the present materials for practical gas monitoring applications.

贵金属在有机金属框架中的功能化和结合已被广泛用作提高其适用性的有效方法。在这里，标记为Zr–BPDC–SO ₂的砜官能化Zr-MOF框架（BPDC–SO ₂ =二苯并[ b，d通过调节其官能团可有效合成[]-噻吩-3,7-二羧酸5,5-二氧化物）及其嵌入钯的复合材料。对获得的化合物进行表征，以评估其在气体传感应用中的潜力。X射线衍射，傅立叶变换红外光谱，扫描电子显微镜，比表面积测量和热重分析被用来表征新型传感器材料。在各种温度，浓度和气体类型条件下，系统地研究了新型功能化传感器材料的气体传感特性。由于框架中的磺酰基和Zr ₆团簇具有强大的氢键以及乙醇中的羟基，因此Zr–BPDC–SO ₂成为乙醇检测的有效传感器。此外，Pd @ Zr–BPDC–SO ₂在传感器动力学和响应方面均表现出高效的氢感测性能。更重要的是，该材料对氢的感应响应高于对其他气体的感应响应，突出了Pd在基于Zr-MOF的氢传感器中的重要作用。在这项研究中进行的传感测试的结果突出了本材料在实际气体监测应用中的有前途的潜力。