外文题目: Stably dispersed metallophthalocyanine noncovalently bonded to multiwalled carbon nanotubes for ammonia sensing at room temperature
作者: Kang, Di; Wang, Bin; Wang, Xiaolin; Li, Yong; Chen, Zhimin; He, Chunying; Wu, Yiqun
刊名: Sens. Actuator B-Chem.
年: 2017 卷: 246 页： 262--270
英文关键词:
Phthalocyanine; Multi walled carbon nanotube; CNTs hybrids; Ammonia; Gas sensor
GAS SENSORS; PASTE ELECTRODE; COPPER; COBALT; NH3; NANOCRYSTAL; GLUTATHIONE; PERFORMANCE; COMPOSITES; DIOXIDE
英文摘要:
Herein, a series of tetra-alpha-isopentyloxyphthalocyanine copper, nickle, lead (CuPc-3, NiPc-3, PbPc-3) have been successfully bonded on the surface of acidified multi-walled carbon nanotubes (MWCNTs) by using a solution self-assembly method based on pi-pi stacking interaction facile reaction. The obtained MPc-3/MWCNTs (M = Cu, Ni, and Pb) hybrids display good dispersibility in DMF, which is beneficial to construct uniform sensing devices. The MPc-3/MWCNTs sensors exhibit excellent sensing performance, in terms of sensitivity, reversibility, reproducibility, selectivity and stability, especially CuPc-3/MWCNTs sensor in detail, the response is about 40.5% (80 ppm), the limit of detection is as low as 75 ppb, and the recovery time is about as fast as 180 s at room temperature. The enhanced NH3-sensing performance is mainly due to the synergistic effect between MPc-3 and MWCNTs, e.g. the stronger adsorption interaction of MPc3 with NH3, the high electrical conductivity of MWCNTs, and the fast charge transfer between MPc-3 and MWCNTs. The systematic study developed here provides a valid way to fabricate high-efficient NH3 sensors. (C) 2017 Elsevier B.V. All rights reserved.


文献类型: 期刊论文
正文语种: English
收录类别: SCI
DOI: 10.1016/j.snb.2017.02.083


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