Facile sonochemical synthesis of porous and hierarchical manganese(III) oxide tiny nanostructures for super sensitive electrocatalytic detection of antibiotic (chloramphenicol) in fresh milk.
Ultrason Sonochem
; 58: 104648, 2019 Nov.
Article
en En
| MEDLINE
| ID: mdl-31450373
ABSTRACT
We report the preparation of a porous and hierarchical manganese(III) oxide tiny nanostructures (Mn2O3 TNS) by a simple sonochemical approach. The nanocatalyst was synthesized by a bath-type ultrasound washer (Honda Electronics, W-118T) at 700â¯W and 300â¯kHz frequency. The morphology and chemical composition of the nanocatalyst were characterized by X-rays diffractometry (XRD), transmission electron microscopy (TEM), energy dispersive x-rays (EDX), X-ray photoelectron spectroscopy (XPS) and electrochemical impedance spectroscopy (EIS). The electrocatalytic activity (ECA) was monitored by detection of toxic antibiotic drug (chloramphenicol) under phosphate buffer (pH 7.0). A facile sonochemical route was employed to prepare Mn2O3 TNS modified electrode. The screen-printed carbon electrode (SPCE) modified with Mn2O3 TNS was fabricated and applied for the electrochemical determination of chloramphenicol. Compared with bare SPCE, Mn2O3 TNS modified SPCE showed highest current response towards chloramphenicol. Furthermore, the modified sensor exhibits with a sharp peak and two linear ranges by using DPV (i) 0.015-1.28⯵M with the sensitivity of 4.167⯵A⯵M-1 cm-2 and (ii) 1.35-566.3⯵M with the sensitivity of 7.205⯵A⯵M-1 cm-2. Notably, we achieved a very low-level detection limit of 4.26â¯nM for the DPV detection of chloramphenicol. Further, the superior practicability of the nanosheets modified sensor can be used for real time sensing of chloramphenicol with good recover ranges.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Óxidos
/
Cloranfenicol
/
Compuestos de Manganeso
/
Leche
/
Nanoestructuras
/
Límite de Detección
/
Ondas Ultrasónicas
/
Análisis de los Alimentos
Tipo de estudio:
Diagnostic_studies
Límite:
Animals
Idioma:
En
Revista:
Ultrason Sonochem
Asunto de la revista:
DIAGNOSTICO POR IMAGEM
Año:
2019
Tipo del documento:
Article