Facile sonochemical synthesis of rutile-type titanium dioxide microspheres decorated graphene oxide composite for efficient electrochemical sensor

Tse-Wei Chen; Sathishkumar Chinnapaiyan; Shen-Ming Chen; Ahmed Hossam Mahmoud; Mohamed S Elshikh; Hossam Ebaid; Mohamed Taha Yassin

doi:10.1016/j.ultsonch.2019.104872

Facile sonochemical synthesis of rutile-type titanium dioxide microspheres decorated graphene oxide composite for efficient electrochemical sensor

Ultrason Sonochem. 2020 Apr:62:104872. doi: 10.1016/j.ultsonch.2019.104872. Epub 2019 Nov 18.

Authors

Tse-Wei Chen¹, Sathishkumar Chinnapaiyan², Shen-Ming Chen³, Ahmed Hossam Mahmoud⁴, Mohamed S Elshikh⁵, Hossam Ebaid⁴, Mohamed Taha Yassin⁵

Affiliations

¹ Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC; Research and Development Center for Smart Textile Technology, National Taipei University of Technology, Taipei, Taiwan, ROC.
² Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC.
³ Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC. Electronic address: [email protected].
⁴ Department of Zoology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
⁵ Department of Botany and Microbiology, College of Sciences, King Saud University, P.O. Box. 2455, Riyadh 11451, Saudi Arabia.

PMID: 31806555
DOI: 10.1016/j.ultsonch.2019.104872

Abstract

In this reports the facile and green synthesis of rutile-type titanium dioxide nanoparticles decorated graphene oxide nanocomposite via the ultrasonication process (frequency: 50 kHz, Power: 100 W/cm² and Ultrasonic type: Ti-horn). Because, the sonochemical synthesis method is simple, non-explosive and harmless method than other conventional technique. Furthermore, the synthesized material was characterized by various analytical techniques including FESEM, EDX, XRD, EIS and electrochemical methods. Then, the synthesized TiO₂ MPs@GOS composite was applied for the electrocatalytic detection of theophylline (TPL) using CV and amperometric (current-time) techniques. Captivatingly, the modified sensor has excellent electrocatalytic performance with the wider linear range from 0.02 to 209.6 µM towards the determination of theophylline and the LOD and sensitivity of the modified sensor was calculated as 13.26 nM and 1.183 μA·µM^-1·cm^-2, respectively. In addition, a selectivity, reproducibility and stability of the TiO₂ MPs@GOS modified GCE were analyzed towards the determination of theophylline molecule. Finally, the real time application of TiO₂ MPs@GOS modified theophylline sensor was established in serum and drug samples.

Keywords: Graphene oxide nanosheets; Nanocomposites; Sonochemical approach; Theophylline; Titanium dioxide.