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Vol. 15, Special Issue, October 2012, pp. 35-41

 

Selected papers from Nanotech Conference & Expo (NanoTech' 2012),
18-21 June 2012, Santa Clara, California, USA

 

Bullet

 

Synthesis and Characterization of Nickel Ferrite (NiFe2O4) Nanoparticles with Silver Addition for H2S Gas Detection

 

N. Domínguez-Ruiz, P. E. García-Casilla, J. F. Hernández-Paz, R. C. Ambrosio-Lázaro, M. Ramos-Murillo, H. Camacho-Montes, C. A. Rodríguez González

Instituto de Ingeniería y Tecnología, Universidad Autónoma de Ciudad Juárez,
Ave. Del Charro #610 norte, Cd. Juárez Chihuahua, 32310, México
Tel.: (656) 688 4848

E-mail: claudia.rodriguez@uacj.mx

 

 

Received: 14 September 2012   /Accepted: 1 October 2012   /Published: 8 October 2012

Digital Sensors and Sensor Sysstems

 

Abstract: The fabrication and testing of H2S gas sensors using nickel ferrite (NiFe2O4) nanoparticles and silver is presented here. The nanoparticles were prepared by chemical co-precipitation and silver was added by impregnation. The sensor response was measured at different H2S concentrations. At 200 ppm H2S, results indicate a 0.18 efficiency as compared to 0.45 for NiFe2O4 and NiFe2O4-5 % wt. Ag, respectively. Characterization by XRD indicates an average crystal size of 19 nm. Electron Microscopy in Scanning and Transmission mode indicates agglomerates with sponge-like structure and two-dimensional slabs in the range of 11~39 nm.

 

Keywords: Nickel ferrite, Silver, Nanoparticles, H2S

 

 

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