Phosphorene has recently been receiving attention for gas sensing due to its unique geometric and electronic structure. However, several challenges still remain that hinder the potential application of phosphene, especially its ambient instability and sheets restacking during sensing film formation. Herein, we report on a new sensing material design based on incorporating chemically passivated phosphorene (CPP) with porous triazine-based two-dimensional polymer (T-2DP). The T-2DP nanosheets could act as nanospacers to prevent the dense stacking of phosphorene layers whilst providing abundant pathway for penetration and adsorption of gas molecules. Such CPP/T-2DP nanocomposite exhibited extended ambient stability, improved sensing speed, excellent selectivity and good flexibility for NO₂ detection. The sensitivity of the nanocomposite sensor improved by over 5-folds in comparison with pristine phosphorene (2410% for the nanocomposite vs 400% for pristine phosphorene at 1 ppm of NO₂). An enhancement mechanism for the CPP/T-2DP nanocomposite was proposed for the highly sensitive NO₂ detection. In addition, this nanospacer intercalation strategy can be extended to other two-dimensional gas sensing nanomaterials, e.g. RGO. These results could provide inspirations in the design of two-dimensional sensing materials/composites and improve their prospects for wearable electronic applications.

磷由于其独特的几何和电子结构，最近在气体传感领域受到关注。但是，仍然存在一些挑战，阻碍了膦的潜在应用，尤其是其环境不稳定性和感测膜形成过程中纸张的重新堆叠。在这里，我们报告了一种新的传感材料设计，该设计基于将化学钝化磷（CPP）与多孔三嗪基二维聚合物（T-2DP）结合在一起。T-2DP纳米片可以充当纳米间隔物，以防止磷层的密集堆积，同时为气体分子的渗透和吸附提供丰富的途径。这种CPP / T-2DP纳米复合材料表现出扩展的环境稳定性，提高的感测速度，出色的选择性以及对NO _2的良好柔韧性检测。所述纳米复合材料传感器的灵敏度与原始磷杂环（用于纳米复合材料2410％相比，改善超过5倍VS 400％为原始磷杂环为1ppm NO的₂）。提出了一种用于CPP / T-2DP纳米复合材料的高灵敏度NO ₂检测机理。另外，这种纳米间隔物插入策略可以扩展到其他二维气体传感纳米材料，例如RGO。这些结果可为二维传感材料/复合材料的设计提供启发，并改善其在可穿戴电子应用中的前景。