TY - JOUR
T1 - Aluminium MOF fabricated electrochemical sensor for the ultra-sensitive detection of hydroquinone in water samples
AU - Ming, Sim Siew
AU - Gowthaman, N. S.K.
AU - Lim, H. N.
AU - Arul, P.
AU - Narayanamoorthi, E.
AU - Ibrahim, I.
AU - Jaafar, H.
AU - John, S. Abraham
N1 - Funding Information:
This research was supported by UPM/800-3/3/3/Geran Putra Berimpak. The author N.S.K.G. is thankful to the Post-Doctoral Research Grant (PD0500) of Universiti Putra Malaysia, Malaysia. EN and SAJ thank the financial support from DST-SERB ( EMR/2016/002898 ), New Delhi, India.
Publisher Copyright:
© 2021 Elsevier B.V.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/2/15
Y1 - 2021/2/15
N2 - An electrochemical sensor based on Al-MOF (CAU-1-MOF) fabricated glassy carbon electrode (GCE) was utilized for hydroquinone (HQ) detection, an environmental pollutant. The CAU-1 MOF was synthesized by simple heating approach and characterized by FT-IR spectroscopy, XRD, SEM and B.E.T. techniques. The FT-IR results revealed the presence of C[dbnd]O vibration for CAU-1, which proved the incorporation of the amino-terephthalic acid into CAU-1. The XRD of the synthesized CAU-1-MOF was in good agreement with the existing CAU-1 (CCDC: 723320). Further, CAU-1 showed rod-shaped morphology with 280 nm size in average. Besides, CAU-1 had a huge surface area, 1349 m2 g−1 and a micropore volume, 0.41 cm3 g−1. The CAU-1 MOF was successfully fabricated on GCE using nafion as a binder and its electrochemical behaviour was investigated. The electrochemical behaviour of HQ was investigated at GCE/CAU-1 and studied its oxidation kinetics. The GCE/CAU-1 showed higher oxidation current for HQ than the bare GCE. Besides, this sensor shows good selectivity and anti-interference activities in HQ detection with the lowest detection limit, 0.067 µM and excellent sensitivity, 1471.4 µA/mM cm2. Furthermore, the proposed sensor was utilized in the determination of HQ in water samples and exhibited good recovery of 99.34%–103.93%, which suggested the practicability and reliability of the sensor, GCE/CAU-1 in the real-life application.
AB - An electrochemical sensor based on Al-MOF (CAU-1-MOF) fabricated glassy carbon electrode (GCE) was utilized for hydroquinone (HQ) detection, an environmental pollutant. The CAU-1 MOF was synthesized by simple heating approach and characterized by FT-IR spectroscopy, XRD, SEM and B.E.T. techniques. The FT-IR results revealed the presence of C[dbnd]O vibration for CAU-1, which proved the incorporation of the amino-terephthalic acid into CAU-1. The XRD of the synthesized CAU-1-MOF was in good agreement with the existing CAU-1 (CCDC: 723320). Further, CAU-1 showed rod-shaped morphology with 280 nm size in average. Besides, CAU-1 had a huge surface area, 1349 m2 g−1 and a micropore volume, 0.41 cm3 g−1. The CAU-1 MOF was successfully fabricated on GCE using nafion as a binder and its electrochemical behaviour was investigated. The electrochemical behaviour of HQ was investigated at GCE/CAU-1 and studied its oxidation kinetics. The GCE/CAU-1 showed higher oxidation current for HQ than the bare GCE. Besides, this sensor shows good selectivity and anti-interference activities in HQ detection with the lowest detection limit, 0.067 µM and excellent sensitivity, 1471.4 µA/mM cm2. Furthermore, the proposed sensor was utilized in the determination of HQ in water samples and exhibited good recovery of 99.34%–103.93%, which suggested the practicability and reliability of the sensor, GCE/CAU-1 in the real-life application.
KW - Aluminium MOF
KW - Amperometry
KW - CAU-1 MOF
KW - Cyclic voltammetry
KW - Hydroquinone
KW - Phenolic hazard
UR - http://www.scopus.com/inward/record.url?scp=85101292384&partnerID=8YFLogxK
U2 - 10.1016/j.jelechem.2021.115067
DO - 10.1016/j.jelechem.2021.115067
M3 - Article
AN - SCOPUS:85101292384
SN - 1572-6657
VL - 883
JO - Journal of Electroanalytical Chemistry
JF - Journal of Electroanalytical Chemistry
M1 - 115067
ER -