State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnic University, Xi'an, 710072, China.
State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnic University, Xi'an, 710072, China.
Chemosphere. 2024 Oct;366:143522. doi: 10.1016/j.chemosphere.2024.143522. Epub 2024 Oct 11.
Due to the unique properties of heterojunction interfaces, heterojunction materials have broad application prospects in gas sensors. In this work, a facile and economical two-step synthesis method was employed to fabricate h-BN/WO heterojunctions, exhibiting excellent performance in triethylamine (TEA) detection. The results indicate that compared to pure WO sensors, h-BN/WO sensors exhibit superior TEA sensing capabilities, with an excellent response of 281.45 to 20 ppm TEA at 100 °C, which is 3.4 times higher. Moreover, h-BN/WO sensors demonstrate favorable response times, low detection limits, and good stability. These significant enhancements are attributed to the increase in oxygen vacancies and the establishment of heterojunctions between h-BN and WO. Heterojunctions can regulate the concentration and transport rate of charge carriers, as well as the interface potential barrier, thereby affecting the gas sensing processes. This work may promote the further development of sensing materials and the practical application of WO sensors in TEA detection.
由于异质结界面的独特性质，异质结材料在气体传感器中有广泛的应用前景。在这项工作中，采用了一种简单经济的两步合成方法来制备 BN/WO 异质结，在三乙胺（TEA）检测方面表现出优异的性能。结果表明，与纯 WO 传感器相比，BN/WO 传感器对 TEA 的传感性能更优，在 100°C 时对 20ppm TEA 的响应值为 281.45，是其 3.4 倍。此外，BN/WO 传感器还表现出良好的响应时间、低检测限和良好的稳定性。这些显著的增强归因于氧空位的增加和 BN 与 WO 之间异质结的建立。异质结可以调节载流子的浓度和输运率以及界面势垒，从而影响气体传感过程。这项工作可能会促进传感材料的进一步发展和 WO 传感器在 TEA 检测中的实际应用。
