Metanil Yellow Dye Encapsulated Layered Double Hydroxide of Nickel and Aluminium: A Fluorescent and Electrochemical Sensor for Pb2+ and Al3+ Ion

Author:

Kalita Sarojmoni1ORCID,Das Diganta Kumar1ORCID

Affiliation:

1. Department of Chemistry, Gauhati University, Guwahati, Assam-781003, India

Abstract

In this work, metanil yellow (MY) dye was successfully encapsulated with layered double hydroxide (LDH) of nickel and aluminium was latter synthesized by hydrothermal process. The prepared sensor (MY@NiAl-LDH) was investigated through various characterization techniques. The sensor served as a fluorescent turn-on sensor for Pb2+ ion and an electrochemical sensor for Al3+ ion. The fluorescent detection of Pb2+ is highly selective, reversible with relatively low limit of detection (LOD). It showed fluorescent enhancement mechanism through blocked PET process. Platinum disc electrode modified with MY@NiAl-LDH could selectively detect Al3+ ion by cyclic voltammetry in presence of other interfering metal ions. The present work aims to expand dye based layered double hydroxides sensors in the field of feasible detection of biological and environmentally important metal ions.

Publisher

Asian Journal of Chemistry

Subject

General Chemistry

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