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Vol. 131, Issue 8, August 2011, pp.43-51

 

Bullet

 

 Fabrication of an Integrated Zeolite-fiber Optical Chemical Sensor for Detection of Mercury (II) Ion in Water

 

*Ning Liu, Liangxiong Li, Robert Lee

Petroleum Recovery Research Center, New Mexico Institute of Mining and Technology,

Socorro, NM 87801, USA

Tel.: 01-575-835-5739, fax: 01-575-835-6031

* E-mail: ningliu@nmt.edu

 

 

Received: 16 June 2011   /Accepted: 22 August 2011   /Published: 30 August 2011

 

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Abstract: This paper describes a process for fabricating an integrated zeolite-captured silver fiber optical chemical sensor. b-oriented zeolite thin film was first coated onto the end surface of an optical fiber. Then Ag+ ions were loaded onto the zeolite crystal via ion exchange. The exchanged Ag+ ions were reduced in the zeolite channel by formaldehyde. The resulting Ag-embedded zeolite-fiber optical sensor was characterized with a number of techniques including scanning electron microscopy, energy-dispersive x-ray spectroscopy, and x-ray photoelectron spectroscopy. By monitoring the reflection intensity change, this sensor can be used for in-situ Hg2+ detection.

 

Keywords: Zeolite, Ion exchange, Optical chemical sensor, Mercury

 

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