Han Yiming, Hao Shuai, Liu Lihong, Li Bo, Mu Yannan, Yang Ming, Zhang Jie
Key Lab of Oral Biomedical Materials and Clinical Application of Heilongjiang Province, Jiamusi University, Heilongjiang Province, Jiamusi, 154007, China.
Key Laboratory of Molten Salt and Functional Materials, Heihe University, Heilongjiang Province, Heihe, 164300, China.
Mikrochim Acta. 2025 Aug 6;192(9):565. doi: 10.1007/s00604-025-07409-1.
The development of NH sensors with efficient room temperature detection is crucial for Internet of Things-driven smart agriculture. Herein, PANI/SnO hollow nanospheres composites were in situ synthesized on flexible interdigital electrodes (PET-IDE). Within the PANI/SnO composites microstructure, the SnO hollow spheres can provide effective support to the PANI film, minimize agglomeration, and enhance the functional performance of PANI. Furthermore, the extensive interface between the SnO hollow spheres and the PANI film promotes the creation of p-n heterojunction, thereby significantly improving the NH gas-sensing performance. The 4PS-based sensor (the PANI/SnO composite obtained at 0.04 mol·L APS/HCl solutions) exhibited a high response (9.63) toward 100 ppm NH, along with excellent selectivity and stability. Correlations between microstructure and NH gas-sensing behavior were systematically investigated, offering theoretical insights for sensor optimization.
开发具有高效室温检测功能的氨气传感器对于物联网驱动的智能农业至关重要。在此，聚苯胺/二氧化锡空心纳米球复合材料在柔性叉指电极（PET-IDE）上原位合成。在聚苯胺/二氧化锡复合材料的微观结构中，二氧化锡空心球可为聚苯胺薄膜提供有效支撑，使团聚最小化，并增强聚苯胺的功能性能。此外，二氧化锡空心球与聚苯胺薄膜之间广泛的界面促进了p-n异质结的形成，从而显著提高了氨气传感性能。基于4PS的传感器（在0.04 mol·L过硫酸铵/盐酸溶液中获得的聚苯胺/二氧化锡复合材料）对100 ppm氨气表现出高响应（9.63），同时具有出色的选择性和稳定性。系统研究了微观结构与氨气传感行为之间的相关性，为传感器优化提供了理论见解。
