Highly sensitive [Ru(bpy)3]<sup>2 +</sup>/Nafion® modified indium tin oxide-based sensor for heavy metal detection
Indium tin oxide-coated glass substrates were modified with tris (2,2′-bipyridyl) ruthenium (II) dichloride hexahydrate [Ru(bpy)3]2 +/Nafion® solution via dip-coating. The Nafion®—[Ru(bpy)3]2 + ratio was varied to optimize the sensitivity of the modified electrodes in detecting lead (Pb2 +) and cadm...
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| Main Authors: | , , |
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| Format: | text |
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Animo Repository
2017
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| Online Access: | https://animorepository.dlsu.edu.ph/faculty_research/364 |
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| Institution: | De La Salle University |
| Summary: | Indium tin oxide-coated glass substrates were modified with tris (2,2′-bipyridyl) ruthenium (II) dichloride hexahydrate [Ru(bpy)3]2 +/Nafion® solution via dip-coating. The Nafion®—[Ru(bpy)3]2 + ratio was varied to optimize the sensitivity of the modified electrodes in detecting lead (Pb2 +) and cadmium (Cd2 +). The surface morphology of the deposited thin film was characterized by scanning electron microscopy (SEM). The lowest concentration detected was 0.007 μM (0.001 μg/mL) and 4.91 μM (0.552 μg/mL) for lead and cadmium, respectively. The optimum Nafion® volume concentration in the film was 0.4% which gave an average film thickness of 217.90 nm. © 2017 |
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