Room temperature ppb level Cl2 detection and sensing mechanism of highly selective and sensitive phthalocyanine nanowires

被引：0

作者：

Saini, Rajan ^{[1
]}

Mahajan, Aman ^{[1
]}

Bedi, R.K. ^{[1
]}

Aswal, D.K. ^{[2
]}

Debnath, A.K. ^{[2
]}

机构：

[1] Material Science Laboratory, Department of Physics, Guru Nanak Dev University, Amritsar 143005, India

[2] Technical Physics Division, Bhabha Atomic Research Center, Mumbai 400085, India

来源：

Sensors and Actuators, B: Chemical | 2014年 / 203卷

基金：

日本学术振兴会;

关键词：

Copper compounds - Gas sensing electrodes - Metal ions - Absorption spectroscopy - Self assembly - Room temperature - Chemical sensors - Metals - Gas detectors - Glass substrates;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Nanowires of Cu(II) 1,4,8,11,15,18,22,25-octabutoxy-29H,31H-phthalocyanine (CuPcOC4) have been fabricated onto the glass substrate by using low cost self-assembly technique. It has been demonstrated that these nanowires were highly sensitive and selective towards Cl2 at room temperature with minimum detection limit of 5 ppb. The response of nanowires was found to increase linearly (91-670%) with increase in Cl2 concentration (5-1500 ppb). The adsorption of Cl2 on nanowires surface has followed Elovich equation. Raman spectroscopic and XPS studies revealed that central metal ions of CuPcOC4 molecules were the predominant sites of Cl 2 absorption. The results emphasized that these nanowires can be promising candidates for room temperature Cl2 sensing applications. © 2014 Elsevier B.V.

引用

页码：17 / 24