Preparation of organic-inorganic (SWCNT/TWEEN-TEOS) nano hybrids and their NO gas sensing properties

被引：24

作者：

Yu, Ming-Ru ^{[1
]}

Suyambrakasam, Gobalakrishnan ^{[2
]}

Wu, Ren-Jang ^{[1
,2
]}

Chavali, Murthy ^{[1
,2
]}

机构：

[1] Providence Univ, Dept Appl Chem, Taichung 433, Taiwan

[2] NI Univ, Sch Interdisciplinary Courses, Noorul Islam Ctr Higher Educ, Dept Nanotechnol, Kumaracoil 629180, Tamil Nadu, India

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2012年 / 161卷 / 01期

关键词：

TWEEN; TEOS; Microwave; Nanostructured hybrids; NO gas sensing; NITRIC-OXIDE; THIN-FILMS; SENSOR; TEMPERATURE; COMPOSITE; DISEASE;

D O I：

10.1016/j.snb.2011.11.068

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Gas sensitive nanostructured hybrid films were synthesized via microwave assisted sol-gel process using polyoxyethylene (20) sorbitan monooleate (TWEEN) and tetraethoxy orthosilicate (TEOS). TWEEN and TEOS were used as organic and inorganic precursors respectively. FT-IR spectra of the TWEEN/TEOS nanohybrid material revealed the formation of organic-inorganic networks between TWEEN and TEOS. XRD spectra and micrographs showed the formation of TWEEN/TEOS amorphous nano hybrid film like structures. Surface roughness was measured using an AFM was 1150 nm and measured film thicknesses were between 18 and 20 mu m. 1%SWCNT (single walled carbon nanotube)/TTH (Tween80/TEOS nano hybrids) named as 1%CNT/TTH, CNT/TTH sensor response for 30-100 ppb NO concentrations was R-2 = 0.9958. Hybrid films have shown better sensor response and faster response time (t(90): 290s). Using Material Studio software, the adsorption phenomena were explained to that of NO gas sensing property. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：938 / 947

页数：10

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