Luminol-doped nanostructured composite materials for chemiluminescent sensing of hydrogen peroxide

Duarte, Abel J.; Rocha, Célia; Silveira, Fernando; Aguilar, Gerardo González; Jorge, Pedro A. S.; Leitão, João Miguel Queirós Magno; Algarra, Manuel; Silva, Joaquim C. G. Esteves da

http://hdl.handle.net/10400.22/3033

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Authors

Duarte, Abel J.

Rocha, Célia

Silveira, Fernando

Aguilar, Gerardo González

Jorge, Pedro A. S.

Leitão, João Miguel Queirós Magno

Algarra, Manuel

Silva, Joaquim C. G. Esteves da

Abstract(s)

Silica based nanostructured composite materials doped with luminol and cobalt(II) ion were synthesized and characterized, resulting in a highly chemiluminescent material in the presence of hydrogen peroxide. A detection system with the CL light guided from the reaction tube to the photomultiplier tube using a one millimeter glass optical fiber was developed and assessed. A linear response was observed using a semi-logarithm calibration between 50–2000 µM hydrogen peroxide with 1 µM as the limit of detection.