Biswal, Ramesh Chandra (2011) Pure and Pt-loaded gamma iron oxide as sensor for detection of sub ppm level of acetone. Sensors and Actuators B-Chemical, 157 (1). pp. 183-188. ISSN 0925-4005

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Abstract

In this study, pure and Pt-loaded nanocrystalline gamma-Fe(2)O(3) have been prepared by precipitation using ultrasonic irradiation. The synthesized powders were characterized by X-ray diffraction (XRD), thermogravimetric analysis (TGA), differential thermal analysis (DTA), transmission electron micrograph (TEM), selected area electron diffraction (SAED), scanning electron microscope (SEM) and energy dispersive Xray (EDX). Pure nanocrystallline gamma-Fe(2)O(3) sensors were found to show good response towards sub ppm level of acetone at 250 degrees C, and improves significantly on Pt loading. As an example, 1 wt% Pt loading of nanocrystallline gamma-Fe(2)O(3) increased its response towards acetone by 55%. The high response of gamma-Fe(2)O(3) holds it as a potentially promising candidate for acetone detection which may lead for the non-invasive testing of diabetics. (C) 2011 Elsevier B.V. All rights reserved.

Item Type:	Article
Uncontrolled Keywords:	Sonochemical synthesis; Pt loaded gamma-Fe2O3; Gas sensor; Acetone
Subjects:	Electronics > Dielectrics and Conductors
Divisions:	UNSPECIFIED
Depositing User:	Bidhan Chaudhuri
Date Deposited:	16 Jan 2012 12:02
Last Modified:	31 Jan 2013 11:25
URI:	http://cgcri.csircentral.net/id/eprint/77

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