As a highly toxic gas, hydrogen sulfide (H₂S) poses risks in terms of environmental and human health. It is mandatory to investigate sensing materials for high performance H₂S sensing. Compared with typically metal materials, metal-free materials show significant advantages in its low-cost, environmentally friendliness as well as stability, which attract more and more attentions in recent years. In this study, with Zinc (Zn) salt as a co-reagent, a two-dimensional metal-free material, porous boron nitride (p-BN) was synthesized and a novel metal-free cataluminescence (CTL) gas sensor was fabricated. By virtue of high specific area and B-vacancies on BN, the as-prepared p-BN gas sensor showed a rapid, stabile, sensitive and selective response toward H₂S, with a wide linear range from 2.79 to 178.6 μg mL⁻¹ and a low limit detection of 0.52 μg mL⁻¹. Meanwhile, the mechanism was also discussed in detail. The study opens an attractive perspective of BN as metal-free materials for high performance toxic gases sensing.

硫化氢（H ₂ S）作为剧毒气体，对环境和人类健康构成威胁。必须研究用于高性能H ₂ S传感的传感材料。与典型的金属材料相比，无金属材料在低成本，环保和稳定性方面显示出显着的优势，近年来引起了越来越多的关注。本研究以锌盐为助剂，合成了二维无金属材料，多孔氮化硼（p-BN），制备了新型无金属催化发光（CTL）气体传感器。由于BN的高比表面积和B空位，所制备的p-BN气体传感器显示出对H ₂的快速，稳定，敏感和选择性的响应S，线性范围为2.79至178.6μgmL ^-1，下限检测为0.52μgmL ^-1。同时，还详细讨论了该机制。这项研究为具有高性能的有毒气体传感的无金属材料打开了BN的诱人前景。