拉曼光谱
碳纳米管
X射线光电子能谱
材料科学
傅里叶变换红外光谱
检出限
吸附
烷氧基
透射电子显微镜
扫描电子显微镜
酞菁
分析化学(期刊)
化学工程
纳米技术
化学
有机化学
色谱法
复合材料
光学
物理
工程类
烷基
作者
Anshul Kumar Sharma,A.K. Debnath,D. K. Aswal,Aman Mahajan
标识
DOI:10.1016/j.snb.2021.130870
摘要
Carbon nanotubes (CNTs) have created their niche in the area of gas sensing applications because of their unique mechanical and electronic properties. Their long recovery time and inadequate or temperature-based recovery result in substandard sensing properties. In this account, to overcome these issues and to highlight the application of CNTs in trace level identification and sensitive detection of chlorine (Cl2), operating at room temperature; a hybrid of single-walled carbon nanotubes anchored with peripheral alkoxy substituted phthalocyanine has been prepared. The as-prepared samples have been characterized for their morphological properties via transmission electron microscopy (TEM), field emission scanning electron microscopy (FE-SEM), and structural properties via Raman, UV–vis, Fourier transform infrared (FTIR), and X-ray photoelectron spectroscopy (XPS) techniques. Moreover, N2-adsorption analysis reveals that Brunauer-Emmett-Teller (BET) surface area for hybrid increases more than three-fold in comparison to SWCNTs-COOH. At room temperature, gas sensing properties of fabricated hybrid sensors exhibit remarkable Cl2 sensing characteristics with a limit of detection up to 1.33 ppb. Moreover, the nature of the interaction between hybrid sensors and gas analytes has been explored based on spectroscopic studies.
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