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Gas sensing investigation on anthraquinone nanowire decorated phosphorene: enhanced stability in conjunction with superior sensitivity
Chemical Engineering Journal ( IF 13.3 ) Pub Date : 2020-04-03 , DOI: 10.1016/j.cej.2020.124933
Wenjing Yuan , Yanting Tang , Kai Yang , Zhongqiu Hua , Fuxing Yin , Dan Xia

Few-layer of phosphorene is considered to be a promising sensing material due to its unique structure and extraordinary physiochemical properties. However, further applications are extremely restricted due to chemical degradation of phosphorene nanosheets in ambient oxygen and moisture. Here, we prepared anthraquinone (AQ) nanowire decorated phosphorene (AQNW-P) through anti-solvent crystallization of AQ during liquid exfoliation of black phosphorus and demonstrated that the sensing stability of AQNW-P significantly improved compared with bare phosphorene (bare-P). Interestingly, a remarkable sensitivity increase was observed for AQNW-P during aging. An enhancement mechanism for the sensitivity increase based on oxygen defects was proposed and further validated by the experimental characterization of the surface chemical state. The sensing performance of AQNW-P was experimentally investigated and compared with that of bare-P and other widely investigated two-dimensional materials including graphene and MXene, and the results demonstrated that AQNW-P is superior in all aspects including sensitivity, selectivity and sensing speed. These findings could guide future exploration in extending the stability of phosphorene-based sensing platform and provide a comprehensive understanding of the sensing behavior of phosphorene or its derivative onto aging.



中文翻译:

蒽醌纳米线修饰的磷气的气敏研究:增强的稳定性和出色的灵敏度

由于其独特的结构和非凡的理化特性,很少有磷层被认为是很有前途的传感材料。然而,由于磷光纳米片在环境氧气和湿气中的化学降解,进一步的应用受到极大限制。在这里,我们通过黑磷液体剥落过程中AQ的反溶剂结晶,制备了蒽醌(AQ)纳米线修饰的磷烯(AQNW-P),并证明了AQNW-P的感测稳定性比裸磷烯(bare-P)显着提高。有趣的是,在老化过程中观察到AQNW-P的灵敏度显着提高。提出了一种基于氧缺陷的灵敏度提高的增强机制,并通过表面化学状态的实验表征进一步验证。通过实验研究了AQNW-P的传感性能,并将其与裸P和其他广泛研究的二维材料(包括石墨烯和MXene)进行了比较,结果表明AQNW-P在灵敏度,选择性和传感等各个方面均优于其他材料速度。这些发现可以指导未来在扩展基于磷的传感平台的稳定性方面的探索,并提供对磷或其衍生物对老化的传感行为的全面理解。

更新日期:2020-04-06
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