黑磷烯尺寸对黑磷烯/羟基磷灰石混合物气敏性能的影响

doi:10.19976/j.cnki.43-1448/TF.2022042

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Abstract In this work, rod-shaped hydroxyapatite (HA) was prepared by hydrothermal method, and black phosphorene (BP) with different sizes was prepared by liquid-phase exfoliation and separated by adopting different centrifugation speed. BP/HA hybrid was prepared with BP at 7.0% mass fraction. The phase composition, micro-morphology and structure of BP/HA were characterized using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, atomic force microscopy and Raman spectroscopy. The gas sensing properties of pure HA and BP/HA with different sizes of BP were investigated using a gas sensing system. The results show that the addition of BP significantly improves the response of HA to ammonia, and the gas-sensing performance of HA is improved the most with the addition of BP with smaller size. Among them, the response of BP-10000/HA to the ammonia concentration of 100×10^-6 is as high as 58.7%, and when the ammonia concentration isincreased to 1 000×10^-6, the response is as high as 98.3%. The smaller the size of BP, the better the gas sensing performance may be due to its larger specific surface area and thus more active sites. In conclusion, BP can significantly improve the gas sensitivity of HA, and BP/HA is a promising gas sensitive material at room temperature.

Key words： hydroxyapatite black phosphorene (BP) room temperature ammonia gas sensing

Received: 18 March 2022 Published: 27 January 2023

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	WU Jiangsong
	TANYanni
	LYU Jianfeng

Cite this article:

WU Jiangsong,TANYanni,LYU Jianfeng. Effect of size of black phosphorene on gas sensitivity of black phosphorene/hydroxyapatite hybrid[J]. Materials Science and Engineering of Powder Metallurgy, 2022, 27(6): 620-629.

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http://pmbjb.csu.edu.cn/EN/10.19976/j.cnki.43-1448/TF.2022042 OR http://pmbjb.csu.edu.cn/EN/Y2022/V27/I6/620

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