TY - JOUR
T1 - Sonochemical synthesis and anchoring of zinc oxide on hemin-mediated multiwalled carbon nanotubes-cellulose nanocomposite for ultra-sensitive biosensing of H2O2
AU - Palanisamy, Selvakumar
AU - Velusamy, Vijayalakshmi
AU - Balu, Sridharan
AU - Velmurugan, Sethupathi
AU - Yang, Thomas C.K.
AU - Chen, Shih Wen
N1 - Funding Information:
This project was supported by the Ministry of Science and Technology (project No: 108-2211-E-027-072) of Taiwan. Authors also express sincere thanks to the Center of Precision Analysis and Material Research, National Taipei University of Technology for providing the all necessary Instrument facilities. Dr Selvakumar Palanisamy acknowledges the National Taipei University of Technology for the post-doctoral fellowship.
Funding Information:
This project was supported by the Ministry of Science and Technology (project No: 108-2211-E-027-072 ) of Taiwan. Authors also express sincere thanks to the Center of Precision Analysis and Material Research, National Taipei University of Technology for providing the all necessary Instrument facilities. Dr Selvakumar Palanisamy acknowledges the National Taipei University of Technology for the post-doctoral fellowship.
Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2020/5
Y1 - 2020/5
N2 - In this work, the metal oxide and biopolymer nanocomposites on multiwalled carbon nanotubes (MWCNT) were prepared using a simple sonochemical method. The hexagonal nanorods of zinc oxide (ZnO NR) were synthesized by probe sonication (frequency = 20 kHz, amplitude = 50) method and were integrated on ultrasonically functionalized MWCNT-cellulose nanocrystals (MWCNT-CNC) for the first time. The stable hemin bio-composites also were prepared using the bath sonication (37 kHz of frequency, 150 W of power) method, and was used for the selective and ultrasensitive electrochemical detection of H2O2. The UV–Vis spectroscopy studies confirmed the presence of native hemin on MWCNT-CNC/ZnO NR nanocomposite. Cyclic voltammetry studies revealed that an enhanced redox electrochemical behaviour of hemin was observed on hemin immobilised MWCNT-CNC/ZnO NR nanocomposite than that of other hemin modified electrodes. Also, the MWCNT-CNC/ZnO NR/hemin modified SPCE showed 2.3 folds higher electrocatalytic activity with a lower reduction potential (−0.2 V) towards H2O2 than that of other investigated hemin modified electrodes including hemin/MWCNT and hemin/CNC-ZnO. The fabricated biosensor displayed a stable amperometric response (-0.2 V vs Ag/AgCl) in the linear concentration of H2O2 ranging up to 4183.3 µM with a lower detection limit of 4.0 nM.
AB - In this work, the metal oxide and biopolymer nanocomposites on multiwalled carbon nanotubes (MWCNT) were prepared using a simple sonochemical method. The hexagonal nanorods of zinc oxide (ZnO NR) were synthesized by probe sonication (frequency = 20 kHz, amplitude = 50) method and were integrated on ultrasonically functionalized MWCNT-cellulose nanocrystals (MWCNT-CNC) for the first time. The stable hemin bio-composites also were prepared using the bath sonication (37 kHz of frequency, 150 W of power) method, and was used for the selective and ultrasensitive electrochemical detection of H2O2. The UV–Vis spectroscopy studies confirmed the presence of native hemin on MWCNT-CNC/ZnO NR nanocomposite. Cyclic voltammetry studies revealed that an enhanced redox electrochemical behaviour of hemin was observed on hemin immobilised MWCNT-CNC/ZnO NR nanocomposite than that of other hemin modified electrodes. Also, the MWCNT-CNC/ZnO NR/hemin modified SPCE showed 2.3 folds higher electrocatalytic activity with a lower reduction potential (−0.2 V) towards H2O2 than that of other investigated hemin modified electrodes including hemin/MWCNT and hemin/CNC-ZnO. The fabricated biosensor displayed a stable amperometric response (-0.2 V vs Ag/AgCl) in the linear concentration of H2O2 ranging up to 4183.3 µM with a lower detection limit of 4.0 nM.
KW - Biosensor
KW - Electrocatalysis
KW - Screen-printed carbon electrode
KW - Selectivity
KW - Sensitivity
KW - Sonochemical synthesis
UR - http://www.scopus.com/inward/record.url?scp=85077709613&partnerID=8YFLogxK
U2 - 10.1016/j.ultsonch.2019.104917
DO - 10.1016/j.ultsonch.2019.104917
M3 - Article
C2 - 31945552
AN - SCOPUS:85077709613
SN - 1350-4177
VL - 63
JO - Ultrasonics Sonochemistry
JF - Ultrasonics Sonochemistry
M1 - 104917
ER -