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Fabrication of a pH Sensor Based on Metal Oxide Nanoparticle and Ion Exchanging Surfaces

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dc.contributor.advisor Jamal, Dr. A. B. M. Mamun
dc.contributor.author Toma, Sanzida Mohosina
dc.date.accessioned 2018-08-08T14:26:56Z
dc.date.available 2018-08-08T14:26:56Z
dc.date.copyright 2018
dc.date.issued 2018-02
dc.identifier.other ID 0000000
dc.identifier.uri http://hdl.handle.net/20.500.12228/221
dc.description This thesis is submitted to the Department of Chemistry, Khulna University of Engineering & Technology in partial fulfillment of the requirements for the degree of Master of Science in Chemistry, February 2018. en_US
dc.description Cataloged from PDF Version of Thesis.
dc.description Includes bibliographical references (pages 96-107).
dc.description.abstract The nanostructures of metal oxides are attractive and important for nanosensor research in the broad range of applications in various fields of biological, environmental and analytical chemistry. Due to their potential applications and special properties metal oxides nanoparticle have concerned considerable attention which are strongly related with their size, structure and morphology. Among the metal oxide, cupric oxide (CuO) is found to be one of the most popular oxide. Owing to its exceptional electrochemical activity and the possibility of promoting electron transfer at a low potential, availability, stability, good morphological and structural control of the synthesized nanostructures, CuO is a good candidate for pH sensing application. In this paper, an electrochemical pH sensor that has been fabricated using copper oxide modified glassy carbon electrode (CuO/GCE). The difference in peak potential shift while using CuO/GCE as pH sensor was measured using square wave voltammetry (SWV); and was found to be linear over the range of pH 3-9, with a sensitivity of 60 mVpl-f'. The sensor shows a potential drift of 1.97 —3.33 % after three hours of continuous use; and could retain 95% of its initial sensitivity after 1 week of use. The electrode was found to respond both in the presence and absence of oxygen, further expanding the potential applications to include it into de-oxygenated environments. This prototype has been tested in real samples and verified by using commercial pH meter. The CuO based sensor showed good sensitivity and long term stability that may show the way to develop a low cost solid state pH sensor for a wider range of applications. en_US
dc.description.statementofresponsibility Sanzida Mohosina Toma
dc.format.extent 108 pages
dc.language.iso en_US en_US
dc.publisher Khulna University of Engineering & Technology (KUET), Khulna, Bangladesh en_US
dc.rights Khulna University of Engineering & Technology (KUET) thesis/dissertation/internship reports are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission.
dc.subject pH Sensor en_US
dc.subject Nanoparticle en_US
dc.title Fabrication of a pH Sensor Based on Metal Oxide Nanoparticle and Ion Exchanging Surfaces en_US
dc.type Thesis en_US
dc.description.degree Master of Science in Chemistry
dc.contributor.department Department of Chemistry


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