Details

Autor(en) / Beteiligte

• Al-Rekabi, S.H.
• Mustapha Kamil, Y.
• Abu Bakar, M.H.
• Fen, Y.W.
• Lim, H.N.
• Kanagesan, S.
• Mahdi, M.A.

Titel

Hydrous ferric oxide-magnetite-reduced graphene oxide nanocomposite for optical detection of arsenic using surface plasmon resonance

Ist Teil von

• Optics and laser technology, 2019-04, Vol.111, p.417-423

Ort / Verlag

Kidlington: Elsevier Ltd

Erscheinungsjahr

2019

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals Complete

Beschreibungen/Notizen

• •The use of hydrous ferric oxide-magnetite-reduced graphene oxide as sensing layer for arsenic detection.•Application of new magnetic composite for heavy metal detections in surface plasmon resonance.•The developed sensing layer is sensitive with 0.1 pbb limit of detection. Surface plasmon resonance sensor coated with hydrous ferric oxide-magnetite-reduced (Fe2H2O4-Fe3O4-rGO) graphene oxide nanocomposite film was demonstrated to detect two toxic heavy metals; Arsenic (III) [As(III)] and Arsenic (V) [As(V)] in aqueous solution. The proposed nanocomposite film exhibited successful absorption of As with enhanced sensitivity and selectivity. Resultantly, when tested with different concentrations of As(III) and As(V), (0.1–1.0 ppb) the sensor ranged linearly with sensitivity of 2.196 °ppb−1 and 0.960 °ppb−1, respectively, and achieved a detection limit as low as 0.1 ppb. These results validate the potential of Fe2H2O4-Fe3O4-rGO nanocomposite material for optical sensing applications in As detection.