Zinc oxide–black phosphorus composites for ultrasensitive nitrogen dioxide sensing†,Nanoscale Horizons

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Zinc oxide–black phosphorus composites for ultrasensitive nitrogen dioxide sensing†
Nanoscale Horizons ( IF 8.0 ) Pub Date : 2018-05-16 00:00:00 , DOI: 10.1039/c8nh00052b
Qun Li _{1,

2,

3,

4,

5} , Yuan Cen _{1,

2,

3,

4} , Jinyu Huang _{1,

2,

3,

4} , Xuejin Li _{1,

2,

3,

4} , Hao Zhang _{1,

2,

3,

4} , Youfu Geng _{1,

2,

3,

4} , Boris I. Yakobson _{6,

7,

8,

9,

10} , Yu Du _{1,

2,

3,

4} , Xiaoqing Tian _{1,

2,

3,

4}

Affiliation

Multi-layer black phosphorus (m-BP) has been successfully incorporated in zinc oxide (ZnO) hollow spheres, thus forming hetero-structured ZnO–BP composites; a study performed on their properties reveals that the BP environmental stability can be significantly enhanced by the introduction of ZnO, and the sensors based on ZnO–BP composites exhibit high response, fast response behavior, outstanding selectivity, and ultralow detection limit of 1 ppb towards NO₂ gas molecules. The ultrasensitive sensing performance is suggested to be due to the large surface area, excellent carrier mobility, and enhanced charge transfer of ZnO–BP in the presence of BP. Moreover, the mechanism of NO₂ sensing with ZnO–BP is confirmed by the calculations obtained from the first-principle studies.

中文翻译：

用于超灵敏二氧化氮传感的氧化锌-黑磷复合材料†

多层黑磷（m-BP）已成功地掺入氧化锌（ZnO）空心球中，从而形成了异质结构的ZnO-BP复合材料。对其性能进行的研究表明，通过引入ZnO可以显着增强BP环境稳定性，并且基于ZnO-BP复合材料的传感器表现出高响应性，快速响应行为，出色的选择性以及对1 ppb的超低检测限。 NO ₂气体分子。超灵敏的感应性能被认为是由于存在BP时表面积大，载流子迁移率出色以及ZnO-BP电荷转移增强所致。此外，通过第一性原理研究获得的计算结果证实了用ZnO-BP进行NO ₂感测的机理。

更新日期：2018-05-16

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