Nanocomposite cross-linked conjugated polyelectrolyte/MWCNT/poly(pyrrole) for enhanced Mg2+ ion sensing and environmental remediation in real samples

Journal of Materials Research and Technology

Guillermo C. Bazan¹  Abdullah M Asiri¹  Basma Ghaleb Alhogbi²  Anish Khan²  Mohammed M. Rahman³  Aftab Aslam Parwaz Khan³  M.M. Alam⁴  Hadi M. Marwani⁵ 

[1] Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia;Corresponding author.;Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia;Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia;Departments of Chemistry and Biochemistry and Materials, University of California, Santa Barbara, CA 93106, USA;

关键词: Conjugated polyelectrolyte;    MWCNT;    Poly(pyrole);    Mg2+ionic sensor;    Electrochemical method;   

DOI  :  

来源: DOAJ

【 摘 要 】

Conjugated polyelectrolyte/MWCNT/poly(pyrrole) (CPE-K/MWCNT/PPY) composites have been prepared by a simple solution mixing technique. Synthesis of PPY/CPE/MWCNT composites was characterized by scanning electron microscopy and thermogravimetric analysis. These nanocomposites of CPE-K/MWCNT/PPY were deposited onto a glassy carbon electrode (GCE) in order to fabricate a reliable Mg2+ cationic sensor. A plot called the calibration curve is produced from the current as a function of concentration of Mg2+ ion. This plot was found to be linear in the range 0.1 nM to 0.01 mM, which is defined as the linear dynamic range. According to the surface area of the GCE (0.0316 cm2) and the slope of the calibration curve, a high sensitivity (19.4968 µA µM–1 cm–2) of the Mg2+ ion sensor was calculated. A significant lower limit of detection (97.71 ± 4.89 pM) was obtained in association with a signal to noise ratio of 3. Sensor parameters such as reproducibility, long-time stability, and short response time were measured and found to be quite satisfactory. This new approach to Mg2+ detection with high sensitivity is suggested for application as a novel multifunctional sensing system. Besides, it was found to be very effective to analyze real environmental samples.

【 授权许可】

Unknown