Research Papers

Optical sensing of peroxide using ceria nanoparticles via fluorescence quenching technique

[+] Author Affiliations
Nader Shehata

Alexandria University, Department of Engineering Mathematics and Physics, Faculty of Engineering, Elhorya Road, Elhadara, Alexandria 21544, Egypt

Alexandria University, Center of Smart Nanotechnology and Photonics, SmartCI Research Center, Elhorya Road, Elhadara, Alexandria 21544, Egypt

Utah State University, USTAR Bioinnovation Center, 1600N 650E, North Logan, Utah 84341, United States

Effat Samir

Alexandria University, Center of Smart Nanotechnology and Photonics, SmartCI Research Center, Elhorya Road, Elhadara, Alexandria 21544, Egypt

Alexandria University, Department of Electrical Engineering, Faculty of Engineering, Elhorya Road, Elhadara, Alexandria 21544, Egypt

Soha Gaballah

Alexandria University, Center of Smart Nanotechnology and Photonics, SmartCI Research Center, Elhorya Road, Elhadara, Alexandria 21544, Egypt

Alexandria University, Department of Chemical Engineering, Faculty of Engineering, Elhorya Road, Elhadara, Alexandria 21544, Egypt

Mohammed Salah

Alexandria University, Department of Engineering Mathematics and Physics, Faculty of Engineering, Elhorya Road, Elhadara, Alexandria 21544, Egypt

Alexandria University, Center of Smart Nanotechnology and Photonics, SmartCI Research Center, Elhorya Road, Elhadara, Alexandria 21544, Egypt

J. Nanophoton. 10(3), 036002 (Jul 08, 2016). doi:10.1117/1.JNP.10.036002
History: Received March 12, 2016; Accepted June 21, 2016
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Abstract.  This study introduces the application of ceria nanoparticles (NPs) as an optical sensor for peroxide using fluorescence quenching technique. Our synthesized ceria NPs have the ability to adsorb peroxides via its oxygen vacancies. Ceria NPs solution with added variable concentrations of hydrogen peroxides is exposed through near-UV excitation and the detected visible fluorescent emission is found to be at 520  nm. The fluorescent intensity peak is found to be reduced with increasing the peroxide concentrations due to static fluorescence quenching technique. The relative intensity change of the visible fluorescent emission has been reduced to more than 50% at added peroxide concentrations up to 10 wt. %. In order to increase ceria peroxides sensing sensitivity, lanthanide elements such as samarium (Sm) are used as ceria NPs dopant. This research work could be applied further in optical sensors of radicals in biomedical engineering and environmental monitoring.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Nader Shehata ; Effat Samir ; Soha Gaballah and Mohammed Salah
"Optical sensing of peroxide using ceria nanoparticles via fluorescence quenching technique", J. Nanophoton. 10(3), 036002 (Jul 08, 2016). ; http://dx.doi.org/10.1117/1.JNP.10.036002


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