南京理工大学张树鹏研究组分享 http://blog.sciencenet.cn/u/shupeng2009

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祝贺沈瑜亮,马闯等同学文章在Science of the Total Environment发表

已有 1213 次阅读 2020-6-28 18:27 |个人分类:点滴成果|系统分类:论文交流

Nanosilver and protonated carbon nitride co-coated carbon cloth fibers based non-enzymatic electrochemical sensor for determination of carcinogenic nitrite

 

Yuliang Shen a, 1, Chuang Ma a, 1, Shupeng Zhang a, d, e*, Pengcheng Li b, *, Weiqing Zhu a, Xumei Zhang a, Juanjuan Gao a, Haiou Song c, *, Duozhe Chen a, Di Pang a, Aimin Li d, e, *


Y. Shen and C. Ma contributed equally to this work.


A novel electrochemical nitrite (NaNO2) sensor was fabricated by combining nanosilver with protonated carbon nitride (H-C3N4) supported on carbon cloth (CC). H-C3N4 was distributed uniformly on the CC surface, providing more active sites for the electrocatalytic active center (nanosilver). CC as a substrate improved the H-C3N4 conductivity and provided the sensor with a flexible feature. The strong synergistic effect between CC, H-C3N4, and nanosilver can exert a significant electrocatalytic performance on the flexible sensor. The Ag/H-C3N4/CC flexible sensor electrode did not consume much more time to polish the surface of traditional electrodes, and possessed a high sensitivity of 0.85537 μA/mg, a wide linear response range that spanned 5 to 1000 μM, a low detection limit of 0.216 μM (S/N = 3), and high selectivity for nitrite in the presence of common organic and inorganic interfering species (such as CaCl2, NaCl, MgCl2, NaNO3, glucose, urea, and p-nitrophenol). The Ag/H-C3N4/CC flexible sensor can be used for sample detection of nitrite as it has a strong anti-interference ability, good reproducibility, repeatability, and long-term stability. The Ag/H-C3N4/CC sensor is a promising alternative electrode to traditional ones such as ITO, gold or glassy carbon electrodes.

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http://blog.sciencenet.cn/blog-311896-1239742.html

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